xone-10q_20190930.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

☒	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2019

☐	TRANSITION REPORT PURSUANT TO SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File No. 001-35806

The ExOne Company

(Exact name of registrant as specified in its charter)

Delaware

46-1684608

(State or other jurisdiction of

incorporation or organization)

(I.R.S. Employer

Identification No.)

127 Industry Boulevard

North Huntingdon, Pennsylvania 15642

(Address of principal executive offices) (Zip Code)

(724) 863-9663

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Exchange Act:


Title of each class	Trading symbol	Name of each exchange on which registered
Common stock	XONE	NASDAQ Stock Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☒
Non-accelerated filer	☐	Smaller reporting company	☒
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of November 7, 2019, 16,413,473 shares of common stock, par value $0.01, were outstanding.

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements.

The ExOne Company and Subsidiaries

Condensed Statement of Consolidated Operations and Comprehensive Loss (Unaudited)

(in thousands, except per-share amounts)

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Revenue	$	10,884		$	16,589		$	35,742		$	39,339
Cost of sales		8,006			10,016			25,080			28,560
Gross profit		2,878			6,573			10,662			10,779
Operating expenses
Research and development		2,430			2,444			7,399			8,474
Selling, general and administrative		5,326			5,200			16,916			17,755
		7,756			7,644			24,315			26,229
Loss from operations		(4,878	)		(1,071	)		(13,653	)		(15,450	)
Other expense (income)
Interest expense		85			73			227			179
Other income ̶ net		(134	)		(838	)		(65	)		(936	)
		(49	)		(765	)		162			(757	)
Loss before income taxes		(4,829	)		(306	)		(13,815	)		(14,693	)
Provision (benefit) for income taxes		15			17			(686	)		52
Net loss	$	(4,844	)	$	(323	)	$	(13,129	)	$	(14,745	)
Net loss per common share:
Basic	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)
Diluted	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)
Comprehensive loss:
Net loss	$	(4,844	)	$	(323	)	$	(13,129	)	$	(14,745	)
Other comprehensive loss:
Foreign currency translation adjustments		(1,387	)		(429	)		(1,580	)		(1,267	)
Comprehensive loss	$	(6,231	)	$	(752	)	$	(14,709	)	$	(16,012	)

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

The ExOne Company and Subsidiaries

Condensed Consolidated Balance Sheet (Unaudited)

(in thousands, except per-share and share amounts)

	September 30,			December 31,
	2019			2018
Assets
Current assets:
Cash and cash equivalents	$	4,756		$	7,592
Restricted cash		1,364			1,548
Accounts receivable ̶ net		3,711			6,393
Current portion of net investment in sales-type leases		210			302
Inventories ̶ net		18,610			15,930
Prepaid expenses and other current assets		3,219			2,438
Total current assets		31,870			34,203
Property and equipment ̶ net		39,146			41,906
Net investment in sales-type leases ̶ net of current portion		792			1,351
Other noncurrent assets		408			222
Total assets	$	72,216		$	77,682
Liabilities
Current liabilities:
Current portion of long-term debt	$	151		$	144
Accounts payable		6,035			4,376
Accrued expenses and other current liabilities		4,116			6,049
Current portion of contract liabilities		8,824			2,343
Total current liabilities		19,126			12,912
Related party revolving credit facility		2,000			—
Long-term debt ̶ net of current portion		1,250			1,364
Contract liabilities ̶ net of current portion		227			527
Other noncurrent liabilities		250			104
Total liabilities		22,853			14,907
Contingencies and commitments
Stockholders' equity
Common stock, $0.01 par value, 200,000,000 shares authorized, 16,346,960 (2019) and 16,234,201 (2018) shares issued and outstanding		163			162
Additional paid-in capital		176,510			175,214
Accumulated deficit		(114,982	)		(101,853	)
Accumulated other comprehensive loss		(12,328	)		(10,748	)
Total stockholders' equity		49,363			62,775
Total liabilities and stockholders' equity	$	72,216		$	77,682

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

The ExOne Company and Subsidiaries

Condensed Statement of Consolidated Cash Flows (Unaudited)

(in thousands)

	Nine Months Ended
	September 30,
	2019			2018
Operating activities
Net loss	$	(13,129	)	$	(14,745	)
Adjustments to reconcile net loss to net cash used for operations:
Depreciation and amortization		3,491			4,039
Equity-based compensation		1,076			656
Amortization of debt issuance costs		70			52
Provision (recoveries) for bad debts ̶ net		264			(40	)
Provision for slow-moving, obsolete and lower of cost or net realizable value inventories ̶ net		37			910
Gain from disposal of property and equipment ̶ net		(2	)		(33	)
Changes in assets and liabilities, excluding effects of foreign currency translation adjustments:
Decrease in accounts receivable		2,790			3,014
Decrease in net investment in sales-type leases		218			152
Increase in inventories		(4,373	)		(7,458	)
Increase in prepaid expenses and other assets		(827	)		(761	)
Increase (decrease) in accounts payable		1,822			(637	)
Decrease in accrued expenses and other liabilities		(1,934	)		(206	)
Increase in contract liabilities		6,301			6,168
Net cash used for operating activities		(4,196	)		(8,889	)
Investing activities
Capital expenditures		(613	)		(1,192	)
Proceeds from sale of property and equipment		3			77
Net cash used for investing activities		(610	)		(1,115	)
Financing activities
Proceeds from related party revolving credit facility		2,000			—
Proceeds from exercise of employee stock options		289			521
Payments on long-term debt		(111	)		(106	)
Taxes related to the net share settlement of equity-based awards		(68	)		—
Debt issuance costs		—			(265	)
Other		(10	)		(13	)
Net cash provided by financing activities		2,100			137
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(314	)		(294	)
Net change in cash, cash equivalents, and restricted cash		(3,020	)		(10,161	)
Cash, cash equivalents, and restricted cash at beginning of period		9,140			22,178
Cash, cash equivalents, and restricted cash at end of period	$	6,120		$	12,017

Supplemental disclosure of noncash investing and financing activities
Transfer of internally developed 3D printing machines from inventories to property and equipment for internal use or leasing activities	$	1,635		$	1,521
Transfer of internally developed 3D printing machines from property and equipment to inventories for sale	$	485		$	847
Property and equipment reclassified as assets held for sale	$	—		$	822
Property and equipment included in accounts payable	$	48		$	48
Property and equipment included in accrued expenses and other current liabilities	$	—		$	4
Property and equipment acquired through financing arrangements	$	—		$	14

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

The ExOne Company and Subsidiaries

Condensed Statement of Changes in Consolidated Stockholders’ Equity (Unaudited)

(in thousands)

											Accumulated
											other			Total
	Common stock				Additional			Accumulated			comprehensive			stockholders'
	Shares		$		paid-in capital			deficit			loss			equity
Balance at December 31, 2017		16,125	$	161	$	173,718		$	(89,186	)	$	(9,484	)	$	75,209
Net loss		—		—		—			(6,385	)		—			(6,385	)
Other comprehensive income		—		—		—			—			1,402			1,402
Equity-based compensation		—		—		379			—			—			379
Common stock issued from equity incentive plan		25		—		—			—			—			—
Balance at March 31, 2018		16,150		161		174,097			(95,571	)		(8,082	)		70,605
Net loss		—		—		—			(8,037	)		—			(8,037	)
Other comprehensive loss		—		—		—			—			(2,240	)		(2,240	)
Equity-based compensation		—		—		(5	)		—			—			(5	)
Balance at June 30, 2018		16,150		161		174,092			(103,608	)		(10,322	)		60,323
Net loss		—		—		—			(323	)		—			(323	)
Other comprehensive loss		—		—		—			—			(429	)		(429	)
Equity-based compensation		—		—		282			—			—			282
Exercise of employee stock options		66		1		520			—			—			521
Common stock issued from equity incentive plan		17		—		—			—			—			—
Balance at September 30, 2018		16,233	$	162	$	174,894		$	(103,931	)	$	(10,751	)	$	60,374

Balance at December 31, 2018		16,234	$	162	$	175,214		$	(101,853	)	$	(10,748	)	$	62,775
Net loss		—		—		—			(4,496	)		—			(4,496	)
Other comprehensive loss		—		—		—			—			(776	)		(776	)
Equity-based compensation		—		—		439			—			—			439
Exercise of employee stock options		23		1		164			—			—			165
Taxes related to the net share settlement of equity-based awards		—		—		(68	)		—			—			(68	)
Common stock issued from equity incentive plan		38		—		—			—			—			—
Balance at March 31, 2019		16,295		163		175,749			(106,349	)		(11,524	)		58,039
Net loss		—		—		—			(3,789	)		—			(3,789	)
Other comprehensive income		—		—		—			—			583			583
Equity-based compensation		—		—		642			—			—			642
Exercise of employee stock options		13		—		97			—			—			97
Common stock issued from equity incentive plan		10		—		—			—			—			—
Balance at June 30, 2019		16,318		163		176,488			(110,138	)		(10,941	)		55,572
Net loss		—		—		—			(4,844	)		—			(4,844	)
Other comprehensive loss		—		—		—			—			(1,387	)		(1,387	)
Equity-based compensation		—		—		(5	)		—			—			(5	)
Exercise of employee stock options		4		—		27			—			—			27
Common stock issued from equity incentive plan		25		—		—			—			—			—
Balance at September 30, 2019		16,347	$	163	$	176,510		$	(114,982	)	$	(12,328	)	$	49,363

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

The ExOne Company and Subsidiaries

Notes to the Condensed Consolidated Financial Statements (Unaudited)

(dollars in thousands, except per-share and share amounts)

Note 1. Basis of Presentation

Organization

The ExOne Company (“ExOne”) is a corporation organized under the laws of the state of Delaware. ExOne was formed on January 1, 2013, when The Ex One Company, LLC, a Delaware limited liability company, merged with and into a Delaware corporation, which survived and changed its name to The ExOne Company (the “Reorganization”). As a result of the Reorganization, The Ex One Company, LLC became ExOne, the common and preferred interest holders of The Ex One Company, LLC became holders of common stock and preferred stock, respectively, of ExOne, and the subsidiaries of The Ex One Company, LLC became the subsidiaries of ExOne. The condensed consolidated financial statements include the accounts of ExOne, its wholly-owned subsidiaries, ExOne Americas LLC (United States); ExOne GmbH (Germany); ExOne Property GmbH (Germany); ExOne KK (Japan); and through December 2018, ExOne Italy S.r.l (Italy). Collectively, the consolidated group is referred to as the “Company”.

The Company filed a registration statement on Form S-3 (No. 333-223690) with the Securities and Exchange Commission (“SEC”) on March 15, 2018. The purpose of the Form S-3 was to register, among other securities, debt securities. Subsidiaries of the Company are co-registrants with the Company (“Subsidiary Guarantors”), and the registration statement registered guarantees of debt securities by one or more of the Subsidiary Guarantors. The Subsidiary Guarantors are 100% owned by the Company and any guarantees by the Subsidiary Guarantors will be full and unconditional. There have been no transactions undertaken subject to the Form S-3 since its initial filing.

Basis of Presentation

The condensed consolidated financial statements of the Company are unaudited. The condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, considered necessary by management to fairly state the results of operations, financial position and cash flows of the Company. All material intercompany transactions and balances have been eliminated in consolidation. The results reported in these condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. The December 31, 2018 condensed consolidated balance sheet data was derived from the audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”). This Quarterly Report on Form 10-Q should be read in connection with the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, which includes all disclosures required by GAAP.

The preparation of these condensed consolidated financial statements requires the Company to make certain judgments, estimates and assumptions regarding uncertainties that affect the reported amounts of assets, liabilities, revenue and expenses and related disclosure of contingent assets and liabilities. Areas that require significant judgments, estimates and assumptions include accounting for accounts receivable (including the allowance for doubtful accounts); inventories (including the allowance for slow-moving and obsolete inventories); product warranty reserves; contingencies; income taxes (including the valuation allowance on certain deferred tax assets and liabilities for uncertain tax positions); equity-based compensation (including the valuation of certain equity-based compensation awards issued by the Company); and testing for impairment of long-lived assets (including the identification of asset groups by management, estimates of future cash flows of identified asset groups and fair value estimates used in connection with assessing the valuation of identified asset groups). The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates.

Certain amounts relating to contract liabilities – net of current portion ($527) in the accompanying condensed consolidated balance sheet at December 31, 2018, have been reclassified from other noncurrent liabilities to conform to current period presentation, following the adoption of Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2014-09 (further described below).

Certain amounts relating to the lessor current portion of net investment in sales-type leases ($302) and lessor net investment in sales-type leases – net of current portion ($1,351) in the accompanying condensed consolidated balance sheet at December 31, 2018, have been reclassified from accounts receivable and other noncurrent assets, respectively, to conform to current period presentation following the adoption of FASB ASU 2016-02 (further described below).

Related to the reclassifications further described above, amounts within the condensed statement of consolidated cash flows for the nine months ended September 30, 2018 associated with these changes have also been reclassified to conform to current period presentation.

Recently Adopted Accounting Guidance

supersedes virtually all existing revenue recognition requirements and guidance. This framework is expected to provide a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: identify the contract(s) with a customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract(s), and recognize revenue when, or as, the entity satisfies a performance obligation. The Company adopted this guidance using the modified retrospective approach. Revenue from the Company’s sale of three-dimensional (“3D”) printing machines and 3D printed and other products, materials and services continues to generally be recognized when the related machines, products or materials are delivered or accepted by the Company’s customers or as the related services are performed by the Company. As such, the adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. The Company has included the enhanced disclosures required by this guidance in its condensed consolidated financial statements (Note 5).

On January 1, 2019, the Company adopted FASB ASU 2016-02, “Leases.” This ASU requires lessees to recognize a right-of-use asset and lease liability on the consolidated balance sheet for leases classified as operating leases. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right-of-use asset and lease liability. Additionally, when measuring assets and liabilities arising from a lease, optional payments should be included only if the lessee is reasonably certain to exercise an option to extend the lease, exercise a purchase option, or not exercise an option to terminate the lease. A right-of-use asset represents an entity’s right to use the underlying asset for the lease term, and a lease liability represents an entity’s obligation to make lease payments. Previously, an asset and liability only were recorded for leases classified as capital leases (financing leases). The measurement, recognition, and presentation of expenses and cash flows arising from leases by a lessee remains the same. In connection with the adoption of this guidance, the Company has completed an assessment resulting in an accumulation of all of its leasing arrangements and has validated the information for accuracy and completeness. Upon adoption of the new lease guidance, management recorded a right-of-use asset and lease liability, each in the amount of approximately $400, on the Company’s consolidated balance sheet for various types of operating leases, including certain machinery and other equipment and vehicles. This amount is equivalent to the aggregate future minimum lease payments on a discounted basis. The Company has also elected to apply the package of transitional practical expedients of the new lease guidance by allowing the Company to not: (1) reassess if expired or existing contracts are, or contain, leases; (2) reassess lease classification for any expired or existing leases; and (3) reassess initial direct costs for any existing leases. Additionally, in July 2018, the FASB issued guidance to provide for an alternative transition method to the new lease guidance, whereby an entity can choose to not reflect the impact of the new lease guidance in the prior periods included in its consolidated financial statements. The Company has utilized this alternative transition method in connection with its adoption on January 1, 2019. The Company has included the enhanced disclosures required by this guidance in its condensed consolidated financial statements (Note 11).

On January 1, 2019, the Company adopted FASB ASU 2016-15, “Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments.” This ASU is intended to reduce diversity in practice in how certain cash receipts and payments are presented and classified in the statement of consolidated cash flows. The standard provides guidance in a number of situations including, among others, settlement of zero-coupon bonds, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, and distributions received from equity method investees. The ASU also provides guidance for classifying cash receipts and payments that have aspects of more than one class of cash flows. The adoption of this ASU did not have an effect on the consolidated financial statements of the Company.

Recently Issued Accounting Guidance

The Company considers the applicability and impact of all ASUs issued by the FASB. Recently issued ASUs not listed below either were assessed and determined to be not applicable or are currently expected to have no impact on the consolidated financial statements of the Company.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses.” This ASU added a new impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected losses rather than incurred losses. Under this ASU, an entity recognizes as an allowance its estimate of expected credit losses. The CECL model applies to most debt instruments, trade receivables, lease receivables, financial guarantee contracts, and other loan commitments. The CECL model does not have a minimum threshold for recognition of impairment losses and entities will need to measure expected credit losses on assets that have a low risk of loss. These changes become effective for the Company on January 1, 2020. Management is currently evaluating the potential impact of these changes on the consolidated financial statements of the Company.

Note 2. Liquidity

The Company has incurred a net loss in each of its annual periods since its inception. As shown in the accompanying condensed statement of consolidated operations and comprehensive loss, the Company incurred a net loss of $4,844 and $13,129 for the three months and nine months ended September 30, 2019, respectively. At September 30, 2019, the Company had $4,756 in unrestricted cash and cash equivalents.

Since its inception the Company has received cumulative unrestricted net proceeds from the sale of its common stock (through its initial public offering and subsequent secondary offerings) of $168,361 to fund its operations. In March 2018, the Company entered into a three-year, $15,000 revolving credit facility with a related party (Note 13) to provide additional funding for working capital and general corporate purposes. At September 30, 2019, $13,000 remained available under the related party revolving credit facility. In June 2018, the Company initiated a 2018 global cost realignment program focused on a reduction in the Company’s production overhead costs and operating expenses in an effort to drive efficiency in its operations and preserve capital.

Management believes that the Company’s existing capital resources will be sufficient to support the Company’s operating plan. If management anticipates that the Company’s actual results will differ from its operating plan, management believes it has sufficient capabilities to enact cost savings measures to preserve capital (in addition to the costs savings measures associated with the Company’s 2018 global cost realignment program further described above). The Company may also seek to raise additional capital to support its growth through additional debt, equity or other alternatives (including asset sales) or a combination thereof.

Note 3. Accumulated Other Comprehensive Loss

The following table summarizes changes in the components of accumulated other comprehensive loss for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Foreign currency translation adjustments
Balance at beginning of period	$	(10,941	)	$	(10,322	)	$	(10,748	)	$	(9,484	)
Other comprehensive loss		(1,387	)		(429	)		(1,580	)		(1,267	)
Balance at end of period	$	(12,328	)	$	(10,751	)	$	(12,328	)	$	(10,751	)

Foreign currency translation adjustments consist of the effect of translation of functional currency financial statements (denominated in the euro and Japanese yen) to the reporting currency of the Company (United States dollar) and certain long-term intercompany transactions between subsidiaries for which settlement is not planned or anticipated in the foreseeable future.

There were no tax impacts related to income tax rate changes and no amounts were reclassified to earnings for either of the periods presented.

Note 4. Loss Per Share

The Company presents basic and diluted loss per common share amounts. Basic loss per common share is calculated by dividing net loss available to common stockholders by the weighted average number of common shares outstanding during the applicable period. Diluted loss per common share is calculated by dividing net loss available to common stockholders by the weighted average number of common shares and common equivalent shares outstanding during the applicable period.

As the Company incurred a net loss during each of the three months and nine months ended September 30, 2019 and 2018, basic average common shares outstanding and diluted average common shares outstanding were the same because the effect of potential shares of common stock, including stock options (828,059 – 2019 and 513,970 – 2018) and unvested restricted stock issued (66,513 – 2019 and 67,001 – 2018), was anti-dilutive.

The information used to compute basic and diluted net loss per common share was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Net loss	$	(4,844	)	$	(323	)	$	(13,129	)	$	(14,745	)
Weighted average shares outstanding (basic and diluted)		16,332,974			16,182,818			16,296,554			16,157,143
Net loss per common share:
Basic	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)
Diluted	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)

Note 5. Revenue

The Company derives revenue from the sale of 3D printing machines and 3D printed and other products, materials and services. Revenue is recognized when the Company satisfies its performance obligation(s) under a contract (either implicit or explicit) by transferring the promised product or service to a customer either when (or as) the customer obtains control of the product or service. A performance obligation is a promise in a contract to transfer a distinct product or service to a customer. A contract’s transaction price is allocated to each distinct performance obligation.

Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products or providing services. As such, revenue is recorded net of returns, allowances, customer discounts, and incentives. Sales, value add, and other taxes collected from customers and remitted to governmental authorities are accounted for on a net (excluded from revenue) basis. Shipping and handling costs are included in cost of sales.

Certain of the Company’s contracts with customers provide for multiple performance obligations. Sales of 3D printing machines may also include optional equipment, materials, replacement components and services (installation, training and other services, including maintenance services and/or an extended warranty). Certain other contracts have a single performance obligation, as the promise to transfer products or services is not separately identifiable from other promises in the contract and, therefore, not distinct. For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using the Company’s best estimate of stand-alone selling price for each distinct product or service in the contract, which is generally based on an observable price.

The Company’s revenue from products is transferred to customers at a point in time. The Company’s contracts for 3D printing machines generally include substantive customer acceptance provisions. Revenue under these contracts is recognized when customer acceptance provisions have been satisfied. For all other product sales, the Company recognizes revenue at the point in time in which the customer obtains control of the product, which is generally when product title passes to the customer upon delivery. In limited cases, title does not transfer and revenue is not recognized until the customer has received the products at its physical location.

The Company’s revenue from service arrangements includes deferred maintenance contracts and extended warranties that can be purchased at the customer’s option. The Company generally provides a standard one-year warranty on the Company’s 3D printing machines, which is considered an assurance type warranty, and not considered a separate performance obligation (Note 10). Revenue associated with deferred maintenance contracts is generally recognized at a point in time when the related services are performed where sufficient historical evidence indicates that the costs of performing the related services under the contract are not incurred on a straight-line basis, with such revenue recognized in proportion to the costs expected to be incurred. Revenue associated with extended warranties is generally recognized over time on a straight-line basis over the related contract period.

The Company’s revenue from service arrangements includes contracts with the federal government under fixed-fee, cost reimbursable and time and materials arrangements (certain of which may have periods of performance greater than one year). Revenue under these contracts is generally recognized over time using an input measure based upon labor hours incurred and provisional rates provided under the contracts. As such, the nature of these contracts may give rise to variable consideration, primarily based upon completion of the Company’s annual Incurred Cost Submission filing as required by the federal government. Historically, amounts associated with variable consideration have not been significant.

The Company’s revenue from service arrangements includes certain research and development services. Revenue under research and development service contracts is generally recognized over time using an output measure, specifically units or parts delivered, based upon certain customer acceptance and delivery requirements. Revenue recognized over time using an output measure is not significant.

The following table summarizes the Company’s revenue by product group for the periods indicated:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
3D printing machines	$	3,972	$	9,700	$	16,532	$	17,434
3D printed and other products, materials and services		6,912		6,889		19,210		21,905
	$	10,884	$	16,589	$	35,742	$	39,339

Revenue from 3D printing machines includes leasing revenue whereby the Company is the lessor of 3D printing machines to its customers. Leasing revenue is accounted for under ASU 2016-02 (Note 11).

payment history, and current economic conditions. For 3D printing machines, the Company’s terms of sale vary by transaction. To reduce credit risk in connection with 3D printing machine sales, the Company may, depending upon the circumstances, require customers to furnish letters of credit or bank guarantees or to provide advanced payment (either partial or in full). For 3D printed and other products and materials, the Company’s terms of sale generally require payment within 30 to 60 days after delivery, although the Company also recognizes that longer payment periods are customary in certain countries where it transacts business. Service arrangements are generally billed in accordance with specific contract terms and are typically billed in advance or in proportion to performance of the related services. There were no other significant changes in contract liabilities during the three months or nine months ended September 30, 2019. Contract assets are not significant.

For the nine months ended September 30, 2019, the Company recognized revenue of $1,714 related to contract liabilities at January 1, 2019.

At September 30, 2019, the Company had approximately $25,800 of remaining performance obligations (including contract liabilities), which is also referred to as backlog, of which approximately $21,700 was expected to be fulfilled during the twelve months following such date.

The Company has elected to apply the practical expedient associated with incremental costs of obtaining a contract, and as such, sales commission expense is generally expensed when incurred because the amortization period would be one year or less. These costs are recorded within selling, general and administrative expenses.

Accounts receivable and net investment in sales-type leases (Note 11) are reported at their net realizable value. The Company carries its investment in sales-type leases based on discounting the minimum lease payments by the interest rate implicit in the lease and less an allowance for doubtful accounts. The Company’s estimate of the allowance for doubtful accounts related to accounts receivable and net investment in sales-type leases is based on the Company’s evaluation of customer accounts with past-due outstanding balances or specific accounts for which it has information that the customer may be unable to meet its financial obligations. Based upon review of these accounts, and management’s analysis and judgment, the Company records a specific allowance for that customer’s accounts receivable or net investment in sales-type lease balance to reduce the outstanding balance to the amount expected to be collected. The allowance is re-evaluated and adjusted periodically as additional information is received that impacts the allowance amount reserved. At September 30, 2019 and December 31, 2018, the allowance for doubtful accounts was $481 and $225, respectively. During the three months ended September 30, 2019 and 2018, the Company recorded net provision (recoveries) for bad debts of $414 and ($3), respectively. During the nine months ended September 30, 2019 and 2018, the Company recorded net provision (recoveries) for bad debts of $264 and ($40), respectively.

Note 6. Restructuring

Houston, Texas

In August 2018, the Company committed to a plan to consolidate certain of its 3D printing operations from its Houston, Texas facility into its Troy, Michigan facility. These actions were taken as part of the Company’s efforts to optimize its business model and maximize its facility utilization. During the three months ended September 30, 2018, the Company recorded a charge of $28 split between cost of sales ($15) and selling, general and administrative expense ($13) associated with involuntary employee terminations related to this plan. During the three months ended September 30, 2018, the Company recorded an additional charge of $1 (to cost of sales) associated with asset impairments related to this plan. There are no additional charges expected to be incurred associated with this plan in future periods. The Company settled all amounts associated with involuntary employee terminations during the three months ended September 30, 2018.

In September 2019, the Company reached agreement with a third party for the sale of certain property and equipment ($822 included in prepaid expenses and other current assets in the accompanying condensed consolidated balance sheet for each of the periods presented) associated with the former Houston, Texas facility. The Company expects to receive net proceeds from the sale of the property and equipment of approximately $1,000 during the three months ended December 31, 2019 and to record a corresponding gain on the sale of approximately $200 from the disposal.

Desenzano del Garda, Italy

accompanying condensed statement of consolidated operations and comprehensive loss. Charges associated with asset impairments recorded during the three and six months ended June 30, 2018 were recorded to cost of sales as a component of depreciation expense in the accompanying condensed statement of consolidated operations and comprehensive loss. Other exit costs relate to the remaining facility rent due under a non-cancellable operating lease following the cessation of operations at the facility in January 2018. Asset impairment charges relate to certain leasehold improvements associated with the exited facility and other equipment which was abandoned by the Company. There are no additional charges expected to be incurred associated with this plan in future periods. The Company settled all amounts associated with involuntary employee terminations and other exit costs (remaining facility rent payments) during 2018.

Note 7. Impairment

During the three months ended September 30, 2019, as a result of continued operating losses and cash flow deficiencies, the Company identified a triggering event requiring a test for the recoverability of long-lived assets held and used at the asset group level. Assessing the recoverability of long-lived assets held and used requires significant judgments and estimates by management.

For purposes of testing long-lived assets for recoverability, the Company operates as three separate asset groups: United States, Europe and Japan. In assessing the recoverability of long-lived assets held and used, the Company determined the carrying amount of long-lived assets held and used to be in excess of the estimated future undiscounted net cash flows of the related assets. The Company proceeded to determine the fair value of its long-lived assets held and used, principally through use of the market approach. The Company’s use of the market approach included consideration of market transactions for comparable assets. Management concluded that the fair value of long-lived assets held and used exceeded their carrying value, and as such, no impairment loss was recorded.

A significant decrease in the market price of a long-lived asset, adverse change in the use or condition of a long-lived asset, adverse change in the business climate or legal or regulatory factors impacting a long-lived asset and continued operating losses and cash flow deficiencies associated with a long-lived asset, among other indicators, could cause a future assessment to be performed which may result in an impairment of long-lived assets held and used, resulting in a material adverse effect on the financial position and results of operations of the Company.

Note 8. Cash, Cash Equivalents, and Restricted Cash

The following provides a reconciliation of cash, cash equivalents, and restricted cash as reported in the accompanying condensed consolidated balance sheet to the same such amounts shown in the accompanying condensed statement of consolidated cash flows as of the dates indicated:

	September 30,		December 31,
	2019		2018
Cash and cash equivalents	$	4,756	$	7,592
Restricted cash		1,364		1,548
Cash, cash equivalents, and restricted cash	$	6,120	$	9,140

Restricted cash at September 30, 2019 and December 31, 2018 includes $857 and $1,044, respectively, associated with cash collateral required by a German bank for short-term financial guarantees issued by ExOne GmbH in connection with certain commercial transactions requiring security (Note 12). Restricted cash at September 30, 2019 and December 31, 2018 includes $507 and $504, respectively, associated with cash collateral required by a United States bank to offset certain short-term, unsecured lending commitments associated with the Company’s corporate credit card program. Each of the balances described are considered legally restricted by the Company.

Note 9. Inventories

Inventories consisted of the following as of the dates indicated:

	September 30,		December 31,
	2019		2018
Raw materials and components	$	8,734	$	7,747
Work in process		6,099		5,147
Finished goods		3,777		3,036
	$	18,610	$	15,930

of completion. Finished goods consist of 3D printing machines and other products prepared for sale in accordance with customer specifications.

At September 30, 2019 and December 31, 2018, the allowance for slow-moving and obsolete inventories was $3,684 and $4,143, respectively, and has been reflected as a reduction to inventories (principally raw materials and components).

During the three months ended June 30, 2018, the Company recorded a charge of $561 to cost of sales in the accompanying condensed statement of consolidated operations and comprehensive loss attributable to certain industrial microwave inventories based on a sustained absence of demand for such curing solutions and a decision by the Company to discontinue future manufacturing of such industrial microwaves.

Note 10. Product Warranty Reserves

Substantially all of the Company’s 3D printing machines are covered by a standard twelve-month warranty. Generally, at the time of sale, a liability is recorded (with an offset to cost of sales) based upon the expected cost of replacement parts and labor to be incurred over the life of the standard warranty. Expected cost is estimated using historical experience for similar products. The Company periodically assesses the adequacy of the product warranty reserves based on changes in these factors and records any necessary adjustments if actual experience indicates that adjustments are necessary. Future claims experience could be materially different from prior results because of the introduction of new, more complex products, a change in the Company’s warranty policy in response to industry trends, competition or other external forces, or manufacturing changes that could impact product quality. In the event that the Company determines that its current or future product repair and replacement costs exceed estimates, an adjustment to these reserves would be charged to cost of sales in the period such a determination is made.

The following table summarizes changes in product warranty reserves, which amounts were reflected in accrued expenses and other current liabilities in the accompanying condensed consolidated balance sheet for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	1,223		$	909		$	1,670		$	1,300
Provisions for new issuances		182			445			711			831
Payments		(409	)		(236	)		(1,257	)		(564	)
Reserve adjustments		(65	)		(103	)		(188	)		(542	)
Foreign currency translation adjustments		(20	)		(11	)		(25	)		(21	)
Balance at end of period	$	911		$	1,004		$	911		$	1,004

Note 11. Leases

Lessee

The Company leases machinery and other equipment and vehicles under operating lease arrangements (with initial terms greater than twelve months), expiring in various years through 2026. In addition, the Company leases certain equipment and vehicles under finance (previously capital) lease arrangements, which are not significant.

For all operating lease arrangements (with the exception of short-term lease arrangements), the Company presents at the commencement date: a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term.

The Company has elected, as a practical expedient, not to separate non-lease components from lease components, and instead account for each separate component as a single lease component for all lease arrangements, as lessee. In addition, the Company has elected, as a practical expedient, not to apply lease recognition requirements to short-term lease arrangements, generally those with a lease term of less than twelve months, for all classes of underlying assets. In determination of the lease term, the Company considers the likelihood of lease renewal options and lease termination provisions. As a result, lease payments under these short-term lease arrangements are recognized in the accompanying condensed statement of consolidated operations and comprehensive loss on a straight-line basis over the lease term.

The Company uses its incremental borrowing rate in determining the present value of lease payments, as the implicit rate of the lease arrangements is generally not readily determinable.

Through July 2019, certain of the Company’s operating lease arrangements were with related parties under common control (Note 18). Lease cost under operating lease agreements with related parties, included within short-term lease cost below, was $4 and $28 for the three months and nine months ended September 30, 2019.

Future minimum lease payments of operating lease arrangements (with initial terms greater than twelve months) at September 30, 2019, were as follows:

2019	$	39
2020		107
2021		71
2022		58
2023		9
Thereafter		3
Total minimum lease payments		287
Less: Present value discount		(26	)
Total operating lease liabilities	$	261

For the three months and nine months ended September 30, 2019, lease cost under operating lease arrangements was $94 (including $44 relating to short-term lease arrangements) and $305 (including $156 relating to short-term lease arrangements), respectively.

Supplemental information related to operating lease arrangements (with initial terms greater than twelve months) was as follows at and for the nine months ended September 30, 2019:

Operating lease right-of-use assets included in other noncurrent assets	$	261
Operating lease liabilities included in accrued expenses and other current liabilities	$	108
Operating lease liabilities included in other noncurrent liabilities	$	153
Right-of-use assets obtained in exchange for new operating lease liabilities	$	10
Cash paid for amounts included in the measurement of operating lease liabilities	$	147
Weighted average remaining lease term (in years)		2.9
Weighted average discount rate		6.6	%

As previously disclosed under the prior lease accounting standard, future minimum lease payments of operating lease arrangements (with initial terms greater than twelve months) at December 31, 2018, were as follows:

2019	$	170
2020		111
2021		76
2022		67
2023		12
Thereafter		5
	$	441

Lessor

The Company leases machinery and equipment to customers (principally 3D printing machines and related equipment) under lease arrangements classified as either operating leases or sales-type leases. The Company’s operating lease arrangements have initial terms generally ranging from one to five years, certain of which may contain extension or termination clauses, or both. Such operating lease arrangements also generally include a purchase option to acquire the related machinery and equipment at the end of the lease term for either a fixed amount as determined at inception, or a subsequently negotiated fair market value. At September 30, 2019, the Company estimated that the total fair market value significantly exceeded the related net book value of the machinery and equipment held under the Company’s operating lease arrangements. The Company’s sales-type lease arrangements generally include transfer of ownership at the end of the lease term, and as such, the Company’s net investment in sale-type lease arrangements presented in the Company’s accompanying condensed consolidated balance sheet generally does not include an amount of unguaranteed residual value.

The Company has elected, as a practical expedient, not to separate non-lease components from lease components, and instead account for each separate component as a single lease component for all lease arrangements, as lessor. Sales, value add, and other taxes collected from customers and remitted to governmental authorities are accounted for on a net (excluded from lease income) basis. In determination of the lease term, the Company considers the likelihood of lease renewal options and lease termination provisions. Additionally, certain of the Company’s lease arrangements do not qualify as sale-type leases as collectability is not reasonably assured.

The Company recognized the following components under operating and sales-type lease arrangements in the accompanying condensed statement of consolidated operations and comprehensive loss for the periods indicated:

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2019				2018				2019				2018
	Operating		Sales-type		Operating		Sales-type		Operating		Sales-type		Operating		Sales-type
Revenue	$	261	$	—	$	336	$	—	$	1,287	$	—	$	788	$	—
Interest income^(a)	$	—	$	21	$	—	$	12	$	—	$	76	$	—	$	38


(a)	Interest income relating to sales-type leases is recorded as a component of revenue in the accompanying condensed statement of consolidated operations and comprehensive loss for each of the periods presented.

The Company’s net investment in sales-type leases consisted of the following as of the dates indicated:

	September 30,			December 31,
	2019			2018
Future minimum lease payments receivable	$	1,650		$	1,969
Less: Allowance for doubtful accounts		(412	)		—
Net future minimum lease payments receivable		1,238			1,969
Less: Unearned interest income		(236	)		(316	)
Net investment in sales-type leases	$	1,002		$	1,653

During the three months and nine months ended September 30, 2019, the Company recorded a provision for bad debt of $416 based on a deterioration in credit quality of a lessee. There were no such provisions recorded during the three months or nine months ended September 30, 2018.

Future minimum lease payments of non-cancellable operating and sales-type lease arrangements at September 30, 2019, were as follows:

	Operating		Sales-type
2019	$	278	$	112
2020		259		377
2021		48		377
2022		—		377
2023		—		407
Thereafter		—		—
Total minimum lease payments	$	585	$	1,650
Less: Allowance for doubtful accounts				(412	)
Less: Present value discount				(236	)
Future minimum lease payments receivable			$	1,002

As previously disclosed under the prior lease accounting standard, minimum future rentals under non-cancellable operating and sales-type lease arrangements at December 31, 2018, were as follows:

	Operating		Sales-type
2019	$	687	$	409
2020		148		382
2021		48		382
2022		—		382
2023		—		414
Thereafter		—		—
	$	883	$	1,969

Note 12. Contingencies and Commitments

Contingencies

On March 1, 2018, the Company’s ExOne GmbH subsidiary notified Voxeljet AG that it had materially breached a 2003 Patent and Know-How Transfer Agreement and asserted its rights to set-off damages as a result of the breaches against the annual license fee due from the Company under the agreement. At this time, the Company cannot reasonably estimate a contingency, if any, related to this matter.

The Company and its subsidiaries are subject to various litigation, claims, and proceedings which have been or may be instituted or asserted from time to time in the ordinary course of business. Management does not believe that the outcome of any pending or threatened matters will have a material adverse effect, individually or in the aggregate, on the financial position, results of operations or cash flows of the Company.

Commitments

In the normal course of its operations, ExOne GmbH issues short-term financial guarantees and letters of credit to third parties in connection with certain commercial transactions requiring security. ExOne GmbH maintains a credit facility with a German bank which provides for various short-term financings in the form of overdraft credit, financial guarantees, letters of credit and collateral security for commercial transactions for an aggregate of approximately $1,400 (€1,300). In addition, ExOne GmbH may use the credit facility for short-term, fixed-rate loans in minimum increments of approximately $100 (€100) with minimum terms of at least 30 days. The overdraft credit interest rate is fixed at 10.2% while the interest rate associated with commercial transactions requiring security (financial guarantees, letters of credit or collateral security) is fixed at 1.75%. The credit facility has an indefinite term and is subject to cancellation by either party at any time upon repayment of amounts outstanding or expiration of commercial transactions requiring security. There is no commitment fee associated with the credit facility. There are no negative covenants associated with the credit facility. The credit facility has been guaranteed by the Company. At September 30, 2019 and December 31, 2018, there were no outstanding borrowings in the form of overdraft credit or short-term loans under the credit facility. At September 30, 2019, total outstanding financial guarantees and letters of credit issued by ExOne GmbH under the credit facility were $857 (€785) with expiration dates ranging from October 2019 through March 2020. At December 31, 2018, total outstanding financial guarantees and letters of credit issued by ExOne GmbH under the credit facility were $1,044 (€912).

In addition to amounts issued by ExOne GmbH under the credit facility, from time to time, ExOne GmbH enters into separate agreements with the same German bank for additional capacity for financial guarantees and letters of credit associated with certain commercial transactions requiring security. Terms of the separate agreements are substantially similar to those of the existing credit facility. At September 30, 2019 and December 31, 2018, ExOne GmbH had a singular financial guarantee outstanding under a separate agreement for $87 (€80) and $96 (€80), respectively, with an expiration date of February 2023. Related to this separate agreement, the requirement for cash collateral was waived by the German bank as it also represents the counterparty in the related transaction.

Note 13. Related Party Revolving Credit Facility

On March 12, 2018, ExOne and its ExOne Americas LLC and ExOne GmbH subsidiaries, as guarantors (collectively, the “Loan Parties”), entered into a Credit Agreement and related ancillary agreements with LBM Holdings, LLC (“LBM”), a company controlled by S. Kent Rockwell, who was the Executive Chairman of the Company (a related party) at such date and is currently Chairman of the Board of Directors (the “Board”) of the Company, relating to a $15,000 revolving credit facility (the “LBM Credit Agreement”) to provide additional funding for working capital and general corporate purposes. The LBM Credit Agreement provides for a term of three years (through March 12, 2021) and bears interest at a rate of one-month LIBOR plus an applicable margin of 500 basis points (7.0% and 7.5% at September 30, 2019 and December 31, 2018, respectively). The LBM Credit Agreement requires a commitment fee of 75 basis points, or 0.75%, on the unused portion of the facility, payable monthly in arrears. In addition, an up-front commitment fee of 125 basis points, or 1.25% ($188), was required at closing. Borrowings under the LBM Credit Agreement are required to be in minimum increments of $1,000. ExOne may terminate or reduce the credit commitment at any time during the term of the LBM Credit Agreement without penalty. ExOne may also make prepayments against outstanding borrowings under the LBM Credit Agreement at any time without penalty. Borrowings under the LBM Credit Agreement have been collateralized by the accounts receivable, inventories and machinery and equipment of the Loan Parties. At September 30, 2019 and December 31, 2018, the total estimated value of collateral was in significant excess of the maximum borrowing capacity under the LBM Credit Agreement.

The LBM Credit Agreement contains several affirmative covenants including prompt payment of liabilities and taxes; maintenance of insurance, properties, and licenses; and compliance with laws. The LBM Credit Agreement also contains several negative covenants including restricting the incurrence of certain additional debt; prohibiting future liens (other than permitted liens); prohibiting investment in third parties; limiting the ability to pay dividends; limiting mergers, acquisitions, and dispositions; and limiting the sale of certain property and equipment of the Loan Parties. The LBM Credit Agreement does not contain any financial

covenants. The LBM Credit Agreement also contains events of default, including, but not limited to, cross-default to certain other debt, breaches of representations and warranties, change of control events and breaches of covenants.

LBM was determined to be a related party based on common control by S. Kent Rockwell. Accordingly, the Company does not consider the LBM Credit Agreement indicative of a fair market value lending. Prior to execution, the LBM Credit Agreement was reviewed and approved by the Audit Committee of the Board and subsequently by a sub-committee of independent members of the Board. At the time of execution of the LBM Credit Agreement, the $15,000 in available loan proceeds was deposited into an escrow account with an unrelated, third party financial institution acting as escrow agent pursuant to a separate Escrow Agreement by and among the parties. Loan proceeds held in escrow are available to the Company upon its submission to the escrow agent of a loan request. Such proceeds will not be available to LBM until payment in-full of the obligations under the LBM Credit Agreement and termination of the LBM Credit Agreement. Payments of principal and other obligations will be made to the escrow agent, while interest payments will be made directly to LBM. Provided there exists no potential default or event of default, the LBM Credit Agreement and Escrow Agreement prohibit any acceleration of repayment of any amount outstanding under the LBM Credit Agreement and prohibit termination of the LBM Credit Agreement or withdrawal from escrow of any unused portion of the available loan proceeds under the credit facility, by LBM.

During the three months ended September 30, 2019, the Company borrowed $2,000 under the LBM Credit Agreement which remained outstanding at September 30, 2019. There were no borrowings by the Company under the LBM Credit Agreement during any period prior to the three months ended September 30, 2019 from its inception (March 12, 2018).

The Company incurred $265 in debt issuance costs associated with the LBM Credit Agreement (including the aforementioned up front commitment fee paid at closing to LBM).

During the three months and nine months ended September 30, 2019, the Company recorded interest expense relating to the LBM Credit Agreement of $65 and $165, respectively. Included in interest expense for the three months and nine months ended September 30, 2019 was $22 and $66, respectively, associated with amortization of debt issuance costs. At September 30, 2019 and December 31, 2018, remaining debt issuance costs were $129 and $195, respectively (of which $88 was included in prepaid expenses and other current assets for both periods and $41 and $107, respectively, was included in other noncurrent assets in the accompanying condensed consolidated balance sheet). Also included in interest expense for the three months and nine months ended September 30, 2019 was $43 and $99, respectively, associated with interest on borrowings and the commitment fee on the unused portion of the revolving credit facility. At September 30, 2019 and December 31, 2018, $20 and $10, respectively, was included in accounts payable in the accompanying condensed consolidated balance sheet. Amounts payable to LBM at September 30, 2019 and December 2018 were settled by the Company in October 2019 and January 2019, respectively.

During the three months and nine months ended September 30, 2018, the Company recorded interest expense relating to the LBM Credit Agreement of $51 and $110, respectively.

Note 14. Income Taxes

The provision (benefit) for income taxes for the three months ended September 30, 2019 and 2018 was $15 and $17, respectively. The provision (benefit) for income taxes for the nine months ended September 30, 2019 and 2018 was ($686) and $52, respectively. The Company has completed a discrete period computation of its provision (benefit) for income taxes for each of the periods presented. The discrete period computation was required as a result of jurisdictions with losses before income taxes for which no tax benefit can be recognized and an inability to generate reliable estimates for results in certain jurisdictions as a result of inconsistencies in generating net operating profits (losses) in those jurisdictions.

The effective tax rate for the three months ended September 30, 2019 and 2018 was 0.3% (provision on a loss) and 5.6% (provision on a loss), respectively. The effective tax rate for the nine months ended September 30, 2019 and 2018 was 5.0% (benefit on a loss) and 0.4% (provision on a loss), respectively. For the three months ended September 30, 2019 and 2018, the effective tax rate differs from the United States federal statutory rate of 21.0% primarily due to net changes in valuation allowances for the periods. For the nine months ended September 30, 2019, the effective tax rate differs from the United States federal statutory rate of 21.0% primarily due to the reversal of previously recorded liabilities for uncertain tax positions (further described below) and net changes in valuation allowances for the period. For the nine months ended September 30, 2018, the effective tax rate differs from the United States federal statutory rate of 21.0% primarily due to net changes in valuation allowances for the periods.

The Company has provided a valuation allowance for its net deferred tax assets as a result of the Company not generating consistent net operating profits in jurisdictions in which it operates. As such, any benefit from deferred taxes in any of the periods presented has been fully offset by changes in the valuation allowance for net deferred tax assets. The Company continues to assess its future taxable income by jurisdiction based on recent historical operating results, the expected timing of reversal of temporary differences, various tax planning strategies that the Company may be able to enact in future periods, the impact of potential operating changes on the business and forecast results from operations in future periods based on available information at the end of each reporting period. To the extent that the Company is able to reach the conclusion that its net deferred tax assets are realizable based on any combination of

the above factors in a single, or in multiple, taxing jurisdictions, a reversal of the related portion of the Company’s existing valuation allowances may occur.

The Company has a liability for uncertain tax positions related to certain intercompany transactions.

A reconciliation of the beginning and ending amount of unrecognized tax benefits (including accrued interest and penalties) was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	105		$	1,871		$	1,186		$	1,775
Additions based on tax positions related to the current year		—			—			—			—
Additions for tax positions of prior years		2			38			4			156
Reductions for tax positions of prior years		—			(487	)		(1,075	)		(487	)
Settlements		—			—			—			—
Foreign currency translation adjustments		(5	)		(16	)		(13	)		(38	)
Balance at end of period	$	102		$	1,406		$	102		$	1,406

The Company includes interest and penalties related to income taxes as a component of the provision (benefit) for income taxes in the accompanying condensed statement of consolidated operations and comprehensive loss. There were no such interest or penalties included in the provision (benefit) for income taxes for any of the periods presented.

At December 31, 2018, there was $820 in unrecognized tax benefits (including accrued interest and penalties) that if recognized would affect the annual effective tax rate. Such amounts were included in accrued expenses and other current liabilities in the accompanying condensed consolidated balance sheet at December 31, 2018. There were no such unrecognized tax benefits at September 30, 2019.

At December 31, 2018, the Company’s ExOne GmbH (2010-2013) and ExOne Property GmbH (2013) subsidiaries were under examination by local taxing authorities in Germany. In January 2019, this examination was concluded by the local taxing authorities in Germany without significant adjustment to previously established tax positions. As a result, during the three months ended March 31, 2019, the Company recorded a reversal of certain of its previously recorded liabilities for uncertain tax positions of $1,075, of which $257 was offset against net operating loss carryforwards.

Note 15. Equity-Based Compensation

On January 24, 2013, the Board adopted the 2013 Equity Incentive Plan (the “Plan”). In connection with the adoption of the Plan, 500,000 shares of common stock were reserved for issuance pursuant to the Plan, with automatic increases in such reserve available each year annually on January 1 from 2014 through 2023 equal to the lesser of 3.0% of the total outstanding shares of common stock as of December 31 of the immediately preceding year, or a number of shares of common stock determined by the Board, provided that the maximum number of shares authorized under the Plan could not exceed 1,992,241 shares, subject to certain adjustments. The maximum number of shares authorized under the Plan was reached on January 1, 2017. At September 30, 2019, 654,134 shares remained available for future issuance under the Plan.

Stock options and restricted stock issued by the Company under the Plan are generally subject to service conditions resulting in annual vesting on the anniversary of the date of grant over a period typically ranging between one and three years. Certain stock options and restricted stock issued by the Company under the Plan vest immediately upon issuance. Stock options issued by the Company under the Plan have contractual lives which expire over a period typically ranging between five and ten years from the date of grant subject to continued service to the Company by the participant.

On February 7, 2018, the Compensation Committee of the Board adopted the 2018 Annual Incentive Program (the “2018 Program”) as a subplan under the Plan. The 2018 Program provided an opportunity for performance-based compensation to senior executive officers of the Company, among others. The target annual incentive for each 2018 Program participant was expressed as a percentage of base salary and was conditioned on the achievement of certain financial goals (as approved by the Compensation Committee of the Board) or a combination of financial and non-financial goals. The Compensation Committee of the Board retained negative discretion over amounts payable under the 2018 Program.

On February 6, 2019, the Compensation Committee of the Board adopted the 2019 Annual Incentive Program (the “2019 Program”) as a subplan under the Plan. The 2019 Program provided an opportunity for performance-based compensation to senior executive officers of the Company, among others. The target annual incentive for each 2019 Program participant was expressed as a percentage of base salary and was conditioned on the achievement of certain financial goals (as approved by the Compensation Committee of the Board) or a combination of financial and non-financial goals. The Compensation Committee of the Board retained negative discretion over amounts payable under the 2019 Program. During the three months ended September 30, 2019, the Company recorded a net

reversal of $376 to equity-based compensation expense based on a change in the estimated outcome of the defined financial goals for 2019 under the 2019 Program.

The following table summarizes the total equity-based compensation expense recognized by the Company for the periods indicated:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2019			2018		2019		2018
Equity-based compensation expense recognized:
Stock options	$	195		$	103	$	511	$	131
Restricted stock		171			108		545		314
Other^(a)		(371	)		71		20		211
Total equity-based compensation expense before income taxes		(5	)		282		1,076		656
Benefit for income taxes^(b)		—			—		—		—
Total equity-based compensation expense net of income taxes	$	(5	)	$	282	$	1,076	$	656


(a)	For the three months and nine months ended September 30, 2019, Other represents activity associated with the 2019 Program and other employee contractual amounts to be settled in equity. For the three months and nine months ended September 30, 2018, Other represents activity associated with the 2018 Program and other employee contractual amounts to be settled in equity.
(b)	The benefit for income taxes from equity-based compensation for each of the periods presented has been determined to be $0 based on valuation allowances against net deferred tax assets.

At September 30, 2019, total future compensation expense related to unvested awards yet to be recognized by the Company was $992 for stock options and $293 for restricted stock. Total future compensation expense related to unvested awards yet to be recognized by the Company is expected to be recognized over a weighted-average remaining vesting period of 1.5 years.

The fair value of stock options granted was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions for the periods indicated:

	Nine Months Ended
	September 30,
	2019	2018
Weighted average fair value per stock option	$2.77 - $3.68	$3.01 - $3.77
Volatility	54.0% - 60.1%	62.6% - 63.7%
Average risk-free interest rate	1.5% - 2.5%	2.5% - 2.7%
Dividend yield	0.0%	0.0%
Expected term (years)	2.5 - 3.5	3.1 - 3.3

For certain stock option awards in which the expected term of the award is less than the period for which the Company has been publicly traded, volatility is estimated based on the historical volatility of the Company. For certain stock option awards in which the expected term of the award exceeds the period for which the Company has been publicly traded, volatility is estimated based on the historical volatilities of certain peer group companies. The average risk-free rate is based on a weighted average yield curve of risk-free interest rates consistent with the expected term of the awards. Expected dividend yield is based on historical dividend data as well as future expectations. Expected term is calculated using the simplified method as the Company does not have sufficient historical exercise experience upon which to base an estimate.

The activity for stock options was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019							2018
	Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value
Outstanding at beginning of period		621,986		$	10.66	$	5.52		674,470		$	11.58	$	6.41
Stock options granted		290,610		$	7.35	$	2.95		147,500		$	7.01	$	3.13
Stock options exercised		(40,432	)	$	7.17	$	3.03		(65,833	)	$	7.91	$	3.87
Stock options forfeited		(9,773	)	$	7.67	$	3.70		(133,835	)	$	9.44	$	5.15
Stock options expired		(34,332	)	$	16.87	$	10.30		(108,332	)	$	13.28	$	7.58
Outstanding at end of period		828,059		$	9.44	$	4.56		513,970		$	10.94	$	5.89
Stock options exercisable at end of period		403,479		$	11.30	$	6.02		360,132		$	12.41	$	6.90
Stock options expected to vest at end of period		424,580		$	7.68	$	3.18		153,838		$	7.49	$	3.52

At September 30, 2019, intrinsic value associated with stock options exercisable and expected to vest was $232 and $557, respectively. The weighted average remaining contractual term of stock options exercisable and stock options expected to vest at September 30, 2019, was 4.0 years and 4.5 years, respectively. Stock options with an aggregate intrinsic value of $358 were exercised by employees during the nine months ended September 30, 2019, resulting in proceeds to the Company from the exercise of stock options of $289. Stock options with an aggregate intrinsic value of $574 were exercised by employees during the nine months ended September 30, 2018, resulting in proceeds to the Company from the exercise of stock options of $521. The Company received no income tax benefit related to stock option exercises in any period.

The activity for restricted stock was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019					2018
	Shares of Restricted Stock			Weighted Average Grant Date Fair Value		Shares of Restricted Stock			Weighted Average Grant Date Fair Value
Outstanding at beginning of period		67,001		$	8.30		52,502		$	11.07
Restricted stock granted		66,763		$	8.98		57,000		$	7.39
Restricted stock vested		(62,251	)	$	8.65		(42,501	)	$	10.51
Restricted stock forfeited		(5,000	)	$	6.75		—		$	—
Outstanding at end of period		66,513		$	8.76		67,001		$	8.30
Restricted stock expected to vest at end of period		66,513		$	8.76		67,001		$	8.30

Restricted stock that vested during the nine months ended September 30, 2019 and 2018, had a fair value of $535 and $326, respectively.

During the nine months ended September 30, 2019, the Company made cash payments for taxes of $68 relating to the net settlement of certain equity-based awards. There were no cash payments for taxes or net settlement of equity-based awards during the nine months ended September 30, 2018.

Note 16. Fair Value Measurements

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities which are required to be recorded at fair value, the Company considers the principal or most advantageous market in which the Company would transact and the market-based risk measurements or assumptions that market participants would use in pricing the asset or liability, such as inherent risk, transfer restrictions and credit risk.

The Company applies the following fair value hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level 1		Observable inputs such as quoted prices in active markets for identical investments that the Company has the ability to access.

Level 2		Inputs include:

		Quoted prices for similar assets or liabilities in active markets;

		Quoted prices for identical or similar assets or liabilities in inactive markets;

		Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and

		Inputs that are derived principally from, or corroborated by, observable market data by correlation or other means.

Level 3		Inputs that are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability.

The Company is required to disclose its estimate of the fair value of material financial instruments, including those recorded as assets or liabilities in its consolidated financial statements, in accordance with GAAP.

At September 30, 2019 and December 31, 2018, the Company had no financial instruments (assets or liabilities) measured at fair value on a recurring basis.

The carrying values and fair values of other financial instruments (assets and liabilities) not required to be recorded at fair value were as follows as of the dates indicated:

	September 30,				December 31,
	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Cash and cash equivalents	$	4,756	$	4,756	$	7,592	$	7,592
Restricted cash	$	1,364	$	1,364	$	1,548	$	1,548
Debt issuance costs^(a)	$	129	$	—	$	195	$	—
Current portion of long-term debt^(b)	$	151	$	155	$	144	$	149
Long-term debt ̶ net of current portion^(b)	$	1,250	$	1,267	$	1,364	$	1,384

(a)

Represents debt issuance costs associated with the Company’s related party revolving credit facility (Note 13) of which $88 are included in prepaid expenses and other current assets for both periods and $41 and $107 are included in other noncurrent assets in the accompanying condensed consolidated balance sheet at September 30, 2019 and December 31, 2018, respectively.

(b)	Carrying values at September 30, 2019 and December 31, 2018 are net of unamortized debt issuance costs of $21 and $25, respectively.

The carrying amounts of cash and cash equivalents, restricted cash and current portion of long-term debt approximate fair value due to their short-term maturities. The fair value of long-term debt – net of current portion has been estimated by management based on the consideration of applicable interest rates (including certain instruments at variable or floating rates) and other available information (including quoted prices of similar instruments available to the Company). Cash and cash equivalents and restricted cash were classified as Level 1; Current portion of long-term debt and long-term debt – net of current portion were classified as Level 2.

Note 17. Concentration of Credit Risk

During the three months and nine months ended September 30, 2019 and 2018, the Company conducted a significant portion of its business with a limited number of customers, though not necessarily the same customers for each respective period. For the three months ended September 30, 2019 and 2018, the Company’s five most significant customers represented 30.2% and 34.6% of total revenue, respectively. For the nine months ended September 30, 2019 and 2018, the Company’s five most significant customers represented 23.8% and 17.9% of total revenue, respectively. At September 30, 2019 and December 31, 2018, accounts receivable from the Company’s five most significant customers were $638 and $2,344, respectively.

Note 18. Related Party Transactions

Officer of the Company). Also included in purchases of products and/or services by the Company during the nine months ended September 30, 2019, was the purchase of a 3D printing machine and certain ancillary equipment for $30 from an educational institution determined to be a related party on the basis that S. Kent Rockwell serves as a trustee of the educational institution.

None of the transactions met a threshold requiring review and approval by the Audit Committee of the Board.

Amounts due to related parties associated with the purchase of products and/or services at December 31, 2018 were $1 and are reflected in accounts payable in the accompanying condensed consolidated balance sheet. There were no amounts due to related parties associated with the purchase of products and/or services at September 30, 2019.

The Company also receives the benefit of the corporate use of an airplane from a related party under common control by S. Kent Rockwell for no consideration. There were no such benefits received during the three months ended September 30, 2019. The Company estimates the fair market value of the benefits received during the nine months ended September 30, 2019 was $3. The Company estimates the fair market value of the benefits received during the three and nine months ended September 30, 2018 was $5.

Refer to Note 13 for further discussion relating to a revolving credit facility with a related party entered into in March 2018.

Note 19. Other Expense (Income) – Net

Other expense (income) – net consisted of the following for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Gain on settlement of insurance claim	$	(16	)	$	(819	)	$	(17	)	$	(819	)
Interest income		(2	)		(6	)		(10	)		(28	)
Foreign currency gains – net		(136	)		(39	)		(85	)		(138	)
Bank fees		25			32			73			75
Other – net		(5	)		(6	)		(26	)		(26	)
	$	(134	)	$	(838	)	$	(65	)	$	(936	)

For the three and nine months ended September 30, 2018, gain on settlement of insurance claim represented $819 of a realized gain associated with an insurance recovery for a 3D printing machine damaged by a third-party freight company while in transit.

Note 20. Subsequent Events

The Company has evaluated all of its activities and concluded that no subsequent events have occurred that would require recognition in the condensed consolidated financial statements or disclosure in the notes to the condensed consolidated financial statements.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

(dollars in thousands, except per-share amounts)

The following discussion and analysis should be read together with our unaudited condensed consolidated financial statements and related notes thereto set forth in this Quarterly Report on Form 10-Q as well as our Annual Report on Form 10-K for the year ended December 31, 2018.

This Quarterly Report on Form 10-Q may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act with respect to our future financial or business performance, strategies, or expectations. Forward-looking statements typically are identified by words or phrases such as “trend,” “potential,” “opportunity,” “pipeline,” “believe,” “comfortable,” “expect,” “anticipate,” “current,” “intention,” “estimate,” “position,” “assume,” “outlook,” “continue,” “remain,” “maintain,” “sustain,” “seek,” “achieve,” as well as similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could” and “may.”

We caution that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made and we assume no duty, and do not undertake, to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.

In addition to items described under “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2018, the following factors, among others, could cause results to differ materially from forward-looking statements or historical performance: our ability to consistently generate operating profits; fluctuations in our revenue and operating results; our competitive environment and our competitive position; our ability to enhance our current 3D printing machines and technology and develop new 3D printing machines; delays in customer capital equipment spending due to macroeconomic factors; our ability to qualify more industrial materials in which we can print; demand for our products; the availability of skilled personnel; the impact of loss of key management; the impact of market conditions and other factors on the carrying value of long-lived assets; our ability to continue as a going concern; the impact of customer specific terms in machine sale agreements on the period in which we recognize revenue; risks related to global operations including effects of foreign currency; the adequacy of sources of liquidity; the amount and sufficiency of funds for required capital expenditures, working capital, and debt service; dependency on certain critical suppliers; nature or impact of alliances and strategic investments; reliance on critical information technology systems; the effect of litigation, contingencies and warranty claims; liabilities under laws and regulations protecting the environment; the impact of governmental laws and regulations; operating hazards, war, terrorism and cancellation or unavailability of insurance coverage; the impact of disruption of our manufacturing facilities or ExOne Adoption Centers (“EACs”); the adequacy of our protection of our intellectual property; and expectations regarding demand for our industrial products, operating revenue, operating and maintenance expenses, insurance expenses and deductibles, interest expenses, debt levels, and other matters with regard to outlook.

Overview

Our Business

We are a global provider of 3D printing machines and 3D printed and other products, materials and services to industrial customers. Our business primarily consists of manufacturing and selling 3D printing machines and printing products to specification for our customers using our installed base of 3D printing machines. Our machines serve direct and indirect applications. Direct printing produces a component; indirect printing makes a tool to produce a component. We offer pre-production collaboration and print products for customers through our network of EACs. We also supply the associated materials, including consumables and replacement parts, and other services, including training and technical support, that are necessary for purchasers of our 3D printing machines to print products. We believe that our ability to print in a variety of industrial materials, as well as our industry-leading volumetric output (as measured by build box size and printing speed), uniquely position us to serve the needs of industrial customers.

Outlook

We plan to grow our market leading position with respect to 3D printing solutions for customers and continue advancing our innovations in direct and indirect printing, principally through an expansion of our fine powder (less than 20 micron) direct printing capabilities and development activities associated with large format direct and indirect 3D printing machines. Our focus continues to be industrial markets for utilization of binder jetting technologies for non-polymer based materials. Our strength in industrial markets is rooted in our diverse material capabilities, our lower cost of adoption versus other competing technologies, our faster printing speeds and our scalability to larger product size.

Backlog

At September 30, 2019, our backlog was approximately $25,800 of which approximately $21,700 was expected to be fulfilled during the twelve months following such date. At December 31, 2018, our backlog was approximately $12,300.

Seasonality

Purchases of our 3D printing machines are often subject to the capital expenditure cycles of our customers. Generally, 3D printing machine sales are higher in our third and fourth quarters than in our first and second quarters; however, as acceptance of our 3D printing machines as a credible alternative to traditional methods of production grows, we expect to limit the seasonality we experience.

Results of Operations

Net Loss

Net loss for the three months ended September 30, 2019 was $4,844, or $0.30 per basic and diluted share, compared with a net loss of $323 or $0.02 per basic and diluted share, for the three months ended September 30, 2018. Net loss for the nine months ended September 30, 2019, was $13,129, or $0.81 per basic and diluted share, compared with a net loss of $14,745 or $0.91 per basic and diluted share, for the nine months ended September 30, 2018.

The increase in our net loss for the three months ended September 30, 2019 as compared to the three months ended September 30, 2018 was principally due to a reduction in our revenues and gross profit, as well as the absence of a gain from an insurance recovery for a 3D printing machine damaged by a third party freight company while in transit (all changes further described below).

The decrease in our net loss for the nine months ended September 30, 2019 as compared to the nine months ended September 30, 2018 was principally due to a decrease in our operating expenses (research and development and selling, general and administrative expense) mostly due to our 2018 global cost realignment program and a tax benefit associated with the reversal of previously recorded liabilities for uncertain tax positions, offset by a reduction in our revenues and gross profit and the absence of the aforementioned gain from an insurance recovery (all changes further described below).

Revenue

The following table summarizes revenue by product group:

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2019				2018				2019				2018
3D printing machines	$	3,972	36.5	%	$	9,700	58.5	%	$	16,532	46.3	%	$	17,434	44.3	%
3D printed and other products, materials and services		6,912	63.5	%		6,889	41.5	%		19,210	53.7	%		21,905	55.7	%
	$	10,884	100.0	%	$	16,589	100.0	%	$	35,742	100.0	%	$	39,339	100.0	%

Revenue for the three months ended September 30, 2019 was $10,884, compared with revenue of $16,589 for the three months ended September 30, 2018, a decrease of $5,705, or 34.4%. The decrease in revenue resulted from a decrease in revenue attributable to our 3D printing machines product group, offset by an increase in revenue attributable to our 3D printed and other products, materials and services product group. The decrease in revenues from 3D printing machines resulted from a lower volume of units sold (nine 3D printing machines sold during the three months ended September 30, 2019, as compared to 15 3D printing machines sold during the three months ended September 30, 2018), and an unfavorable mix of machines sold, with a greater share of direct printers sold as compared to indirect printers (such indirect printers generally bearing a higher average selling price as compared to direct printers). The increase in revenues from 3D printed and other products, materials and services principally resulted from an increase in aftermarket sales (maintenance services and replacement components) based on an increased global installed base of 3D printing machines offset by a decrease in materials (mostly due to reductions in pricing).

Revenue for the nine months ended September 30, 2019, was $35,742 compared with revenue of $39,339 for the nine months ended September 30, 2018, a decrease of $3,597, or 9.1%. The decrease in revenue resulted from a decrease in revenue attributable to both of our product groups. The decrease in revenues from 3D printing machines resulted from a lower average selling price of units sold (primarily due to the mix of 3D printing machines sold), offset by a slightly higher volume of units sold (30 3D printing machines sold during the nine months ended September 30, 2019, as compared to 28 3D printing machines sold during the nine months ended September 30, 2018). The decrease in revenues from 3D printed and other products, materials and services principally resulted from a decrease in revenues from our direct EAC printing operations (mostly due to the timing of orders from a key customer), indirect EAC printing operations (mostly due to lower volumes of printed products and the impact of our exit of our Houston, Texas facility in August 2018, such facility contributing approximately $900 in revenue during the nine months ended September 30, 2018) and

materials (mostly due to reductions in pricing based on external competition) offset by an increase in aftermarket sales based on an increased global installed base of 3D printing machines. Revenue was also impacted by approximately $700 due to unfavorable exchange rates (principally the euro versus the United States dollar) during the nine months ended September 30, 2019.

Cost of Sales and Gross Profit

Cost of sales for the three months ended September 30, 2019 was $8,006, compared with cost of sales of $10,016 for the three months ended September 30, 2018, a decrease of $2,010, or 20.1%. Gross profit for the three months ended September 30, 2019 was $2,878, compared with gross profit of $6,573 for the three months ended September 30, 2018. Gross profit percentage was 26.4% for the three months ended September 30, 2019, compared with 39.6% for the three months ended September 30, 2018. The decrease in our gross profit was primarily due to a decrease in our volume of products sold resulting in a reduction in leverage of our fixed cost base.

Cost of sales for the nine months ended September 30, 2019 was $25,080, compared with cost of sales of $28,560 for the nine months ended September 30, 2018, a decrease of $3,480, or 12.2%. Gross profit for the nine months ended September 30, 2019 was $10,662, compared with gross profit of $10,779 for the nine months ended September 30, 2018. Gross profit percentage was 29.8% for the nine months ended September 30, 2019, compared with 27.4% for the nine months ended September 30, 2018. The decrease in our gross profit was primarily due to a decrease in our volume of products sold resulting in a reduction in leverage of our fixed cost base and net negative experience related to product warranties of $367. These decreases were offset by cost savings associated with our 2018 global cost realignment program (primarily costs associated with our former Houston, Texas facility). In addition, we realized net benefits in cost of sales relating to a reduction in net charges associated with slow-moving, obsolete and lower of cost or net realizable value inventories of $873 (principally due to the $561 charge associated with our industrial microwave inventories recorded during the three months ended June 30, 2018) and the absence of $223 in exit costs associated with our Desenzano del Garda, Italy and Houston, Texas facility consolidations.

Research and Development

Research and development expenses for the three months ended September 30, 2019 were $2,430, compared with research and development expenses of $2,444 for the three months ended September 30, 2018, a decrease of $14, or 0.6%. The decrease in research and development expenses was primarily due to decreases in amounts expected to be awarded under our 2019 Program of $47 based on a change in the estimated outcome of the defined financial goals for 2019 under the 2019 Program. This decrease was offset by an increase in material costs and consulting and professional fees of $22, primarily associated with our development of the X1 25PRO^TM direct 3D printing machine and S-MAX PRO^TM indirect 3D printing machine.

Research and development expenses for the nine months ended September 30, 2019, were $7,399 compared with research and development expenses of $8,474 for the nine months ended September 30, 2018, a decrease of $1,075, or 12.7%. The decrease in research and development expenses was primarily due to decreases in employee-related costs (principally salaries and benefits) of $353 and consulting and professional fees of $841 (both reductions primarily as a result of our 2018 global cost realignment program) and a decrease in amounts expected to be awarded under our 2019 Program of $87. These decreases were offset by an increase in material costs of $238, primarily associated with our development of the X1 25PRO^TM direct 3D printing machine and S-MAX PRO^TM indirect 3D printing machine.

Selling, General and Administrative

Selling, general and administrative expenses for the three months ended September 30, 2019 were $5,326, compared with selling, general and administrative expenses of $5,200 for the three months ended September 30, 2018, an increase of $126, or 2.4%. The increase in selling, general and administrative expenses was principally due to a net provision for bad debts of $414 during the three months ended September 30, 2019 as compared to net recoveries of $2 during the three months ended September 30, 2018. The net provision for bad debts recorded during the three months ended September 30, 2019 included a specific customer provision of $416 associated with a leasing arrangement based on deterioration in credit quality of the lessee. This increase was offset by a decrease of $239 associated with a reduction in equity-based compensation and other amounts expected to be awarded under our 2019 Program based on a change in the estimated outcome of the defined financial goals for 2019 under the 2019 Program.

Selling, general and administrative expenses for the nine months ended September 30, 2019 were $16,916, compared with selling, general and administrative expenses of $17,755 for the nine months ended September 30, 2018, a decrease of $839, or 4.7%. The decrease in selling, general and administrative expenses was principally due to a decrease in employee-related costs (salaries and benefits) of $1,524 (including $708 in employee termination costs associated with the change in our Chief Executive Officer and our 2018 global cost realignment program, recorded during the three months ended June 2018) and $240 of amounts expected to be awarded under our 2019 Program. These decreases were offset by increases associated with equity-based compensation of $675 (principally associated with changes in executive management), net provision for bad debts of $304 (further discussed above) and selling costs (sales promotion, trade show and external commissions) of $222, primarily associated with our investment in the GIFA international foundry show in Dusseldorf, Germany (a once every four-year event).

Interest Expense

Interest expense for the three months ended September 30, 2019 was $85, compared with interest expense of $73 for the three months ended September 30, 2018, an increase of $12, or 16.4%. The increase in interest expense was principally due to interest incurred in connection with our related party revolving credit facility ($65 during the nine months ended September 30, 2019, as compared to $51 during the nine months ended September 30, 2018) based on borrowings of $2,000 under the related party revolving credit facility during the three months ended September 30, 2019. There were no such borrowings during the three months ended September 30, 2018.

Interest expense for the nine months ended September 30, 2019 was $227, compared with interest expense of $179 for the nine months ended September 30, 2018, an increase of $48, or 26.8%. The increase in interest expense was principally due to interest incurred in connection with our related party revolving credit facility entered into on March 12, 2018 ($165 during the nine months ended September 30, 2019, including interest expense associated with the aforementioned borrowings during the three months ended September 30, 2019 further discussed above, as compared to $110 during the nine months ended September 30, 2018).

Other Income – Net

Other income – net for the three months ended September 30, 2019 was $134, compared with other income – net of $838 for the three months ended September 30, 2018. Other income – net for the three months ended September 30, 2019 includes $136 in net foreign exchange gains on commercial transactions and certain intercompany transactions between subsidiaries either settled or planned for settlement in the foreseeable future (principally due to the appreciation of the United States dollar against the euro). Other income – net for the three months ended September 30, 2018 includes $39 in net foreign exchange gains on commercial transactions and certain intercompany transactions between subsidiaries either settled or planned for settlement in the foreseeable future (principally due to the appreciation of the United States dollar against the euro) and $819 of a realized gain associated with an insurance recovery for a 3D printing machine damaged by a third party freight company while in transit.

Other income – net for the nine months ended September 30, 2019 was $65, compared with other income – net of $936 for the nine months ended September 30, 2018. Other income – net for the nine months ended September 30, 2019 includes $85 in net foreign exchange gains on commercial transactions and certain intercompany transactions between subsidiaries either settled or planned for settlement in the foreseeable future (principally due to the appreciation of the United States dollar against the euro). Other income – net for the nine months ended September 30, 2018 includes $138 in net foreign exchange gains on commercial transactions and certain intercompany transactions between subsidiaries either settled or planned for settlement in the foreseeable future (principally due to the appreciation of the United States dollar against the euro) and $819 of a realized gain associated with an insurance recovery for a 3D printing machine damaged by a third party freight company while in transit.

Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes for the three months ended September 30, 2019 and 2018 was $15 and $17, respectively. The provision (benefit) for income taxes for the nine months ended September 30, 2019 and 2018 was ($686) and $52, respectively. We have completed a discrete period computation of our provision (benefit) for income taxes for each of the periods presented. The discrete period computation was required as a result of jurisdictions with losses before income taxes for which no tax benefit can be recognized and an inability to generate reliable estimates for results in certain jurisdictions as a result of inconsistencies in generating net operating profits (losses) in those jurisdictions.

We have provided a valuation allowance for our net deferred tax assets as a result of our inability to generate consistent net operating profits in jurisdictions in which we operate. As such, any benefit from deferred taxes in any of the periods presented in our condensed consolidated financial statements has been fully offset by changes in the valuation allowance for net deferred tax assets. We continue to assess our future taxable income by jurisdiction based on our recent historical operating results, the expected timing of reversal of temporary differences, various tax planning strategies that we may be able to enact in future periods, the impact of potential operating changes on our business and our forecast results from operations in future periods based on available information at the end of each reporting period. To the extent that we are able to reach the conclusion that net deferred tax assets are realizable based on any combination of the above factors in a single, or multiple, taxing jurisdictions, a reversal of the related portion of our existing valuation allowances may occur.

At December 31, 2018, our ExOne GmbH (2010-2013) and ExOne Property GmbH (2013) subsidiaries were under examination by local taxing authorities in Germany. In January 2019, this examination was concluded by the local taxing authorities in Germany without significant adjustment to previously established tax positions. As a result, during the three months ended March 31, 2019, we recorded a reversal of certain of our previously recorded liabilities for uncertain tax positions of $1,075, of which $257 was offset against net operating loss carryforwards.

Restructuring

In August 2018, we committed to a plan to consolidate certain of our 3D printing operations from our Houston, Texas facility into our Troy, Michigan facility. These actions were taken as part of our efforts to optimize our business model and maximize our facility utilization. During the three months ended September 30, 2018, we recorded a charge of $28 split between cost of sales ($15) and selling, general and administrative expense ($13) associated with involuntary employee terminations related to this plan. During the three months ended September 30, 2018, we recorded an additional charge of $1 (to cost of sales) associated with asset impairments related to this plan. There are no additional charges expected to be incurred associated with this plan in future periods. We settled all amounts associated with involuntary employee terminations during the three months ended September 30, 2018.

The consolidation of our 3D printing operations from our Houston, Texas facility into our Troy, Michigan facility is expected to result in a reduction in our annual revenues of approximately $1,400. Revenues associated with our Houston, Texas facility were $153 and $944 for the three months and nine months ended September 30, 2018. We expect annualized cost savings related to this consolidation of approximately $1,800, with approximately $1,600 in the form of cash cost savings (principally employee-related and other operating costs) and approximately $200 in the form of reduced depreciation expense. Cost savings associated with the exit of this facility are expected to benefit cost of sales by approximately $1,600 and selling, general and administrative expenses by approximately $200. We expect to invest these cost savings into technological or process advancements that support either long-term cost benefits or revenue growth.

In September 2019, we reached agreement with a third party for the sale of certain property and equipment ($822 included in prepaid expenses and other current assets in the accompanying condensed consolidated balance sheet for each of the periods presented) associated with the former Houston, Texas facility. We expect to receive net proceeds from the sale of the property and equipment of approximately $1,000 during the three months ended December 31, 2019 and to record a corresponding gain on the sale of approximately $200 from the disposal.

In December 2017, we committed to a plan to consolidate certain of our 3D printing operations from our Desenzano del Garda, Italy facility into our Gersthofen, Germany facility. These actions were taken as part of our efforts to optimize our business model and maximize our facility utilization. As a result of these actions, during the three months ended December 31, 2017, we recorded a charge of $72 split between cost of sales ($19) and selling, general and administrative expense ($53) associated with involuntary employee terminations related to this plan. During the three months ended March 31, 2018, we recorded an additional charge of $245 associated with other exit costs ($17) and asset impairments ($228) related to this plan. During the three months ended June 30, 2018, we recorded an additional charge of $13 associated with asset impairments related to this plan. In addition, during the three months ended June 30, 2018, we recorded a gain from disposal of certain property and equipment of $51 (recorded to cost of sales in the accompanying condensed statement of consolidated operations and comprehensive loss). Charges associated with other exit costs recorded during the six months ended June 30, 2018 were recorded to cost of sales in the accompanying condensed statement of consolidated operations and comprehensive loss. Charges associated with asset impairments recorded during the three and six months ended June 30, 2018 were recorded to cost of sales as a component of depreciation expense in the accompanying condensed statement of consolidated operations and comprehensive loss. Other exit costs relate to the remaining facility rent due under a non-cancellable operating lease following the cessation of operations at the facility in January 2018. Asset impairment charges relate to certain leasehold improvements associated with the exited facility and other equipment which we abandoned. There are no additional charges expected to be incurred associated with this plan in future periods. We settled all amounts associated with involuntary employee terminations and other exit costs (remaining facility rent payments) during 2018.

The consolidation of our 3D printing operations from our Desenzano del Garda, Italy facility into our Gersthofen, Germany facility is not expected to have a significant impact on our revenues in future periods. We expect annualized cost savings related to this consolidation of approximately $875, with approximately $600 in the form of cash cost savings (principally employee-related and other operating costs) and approximately $275 in the form of reduced depreciation expense. Cost savings associated with the exit of this facility are expected to benefit cost of sales by approximately $625 and selling, general and administrative expenses by approximately $250. We expect to invest these cost savings into technological or process advancements that support either long-term cost benefits or revenue growth.

Impairment

During the three months ended September 30, 2019, as a result of continued operating losses and cash flow deficiencies, we identified a triggering event requiring a test for the recoverability of long-lived assets held and used at the asset group level. Assessing the recoverability of long-lived assets held and used requires significant judgments and estimates by management.

For purposes of testing long-lived assets for recoverability, we operate as three separate asset groups: United States, Europe and Japan. In assessing the recoverability of long-lived assets held and used, we determined the carrying amount of long-lived assets held and used to be in excess of the estimated future undiscounted net cash flows of the related assets. We proceeded to determine the fair value of our long-lived assets held and used, principally through use of the market approach. Our use of the market approach included consideration of market transactions for comparable assets. Management concluded that the fair value of long-lived assets held and used exceeded their carrying value and as such no impairment loss was recorded.

Impact of Inflation

Our results of operations and financial condition are presented based on historical cost. While it is difficult to accurately measure the impact of inflation due to the imprecise nature of the estimates required, we believe the effects of inflation, if any, on our results of operations and financial condition are not significant.

Liquidity and Capital Resources

Liquidity

We have incurred a net loss in each of our annual periods since our inception. In addition, we incurred a net loss of $4,844 and $13,129 for the three months and nine months ended September 30, 2019, respectively. At September 30, 2019, we had $4,756 in unrestricted cash and cash equivalents.

We have received cumulative unrestricted net proceeds from the sale of our common stock (through our initial public offering and subsequent secondary offerings) of $168,361 to fund our operations. In March 2018, we entered into a three-year, $15,000 revolving credit facility with a related party (further described below) to provide additional funding for working capital and general corporate purposes. At September 30, 2019, $13,000 remained available under the related party revolving credit facility. In June 2018, we initiated a 2018 global cost realignment program focused on a reduction in our production overhead costs and operating expenses in an effort to drive efficiency in our operations and preserve capital.

We believe that our existing capital resources will be sufficient to support our operating plan. If we anticipate that our actual results will differ from our operating plan, we believe we have sufficient capabilities to enact cost savings measures to preserve capital (in addition to the costs savings measures associated with our 2018 global cost realignment program further described above). We may also seek to raise additional capital to support our growth through additional debt, equity or other alternatives (including asset sales) or a combination thereof.

Related Party Revolving Credit Facility

On March 12, 2018, we and our ExOne Americas LLC and ExOne GmbH subsidiaries, as guarantors (collectively, the “Loan Parties”), entered into a Credit Agreement and related ancillary agreements with LBM Holdings, LLC (“LBM”), a company controlled by S. Kent Rockwell, who was our Executive Chairman (a related party) at such date and is currently Chairman of our Board of Directors (the “Board”), relating to a $15,000 revolving credit facility (the “LBM Credit Agreement”) to provide additional funding for working capital and general corporate purposes. The LBM Credit Agreement provides for a term of three years (through March 12, 2021) and bears interest at a rate of one-month LIBOR plus an applicable margin of 500 basis points (7.0% and 7.5% at September 30, 2019 and December 31, 2018, respectively). The LBM Credit Agreement requires a commitment fee of 75 basis points, or 0.75%, on the unused portion of the facility, payable monthly in arrears. In addition, an up-front commitment fee of 125 basis points, or 1.25% ($188), was required at closing. Borrowings under the LBM Credit Agreement are required to be in minimum increments of $1,000. We may terminate or reduce the credit commitment at any time during the term of the LBM Credit Agreement without penalty. We may also make prepayments against outstanding borrowings under the LBM Credit Agreement at any time without penalty. Borrowings under the LBM Credit Agreement have been collateralized by the accounts receivable, inventories and machinery and equipment of the Loan Parties. At inception and September 30, 2019 the total estimated value of collateral was in significant excess of the maximum borrowing capacity under the LBM Credit Agreement.

LBM was determined to be a related party based on common control by S. Kent Rockwell. Accordingly, we do not consider the LBM Credit Agreement indicative of a fair market value lending. Prior to execution, the LBM Credit Agreement was reviewed and approved by the Audit Committee of the Board and subsequently by a sub-committee of independent members of the Board. At the time of execution of the LBM Credit Agreement, the $15,000 in available loan proceeds was deposited into an escrow account with an unrelated, third party financial institution acting as escrow agent pursuant to a separate Escrow Agreement by and among the parties. Loan proceeds held in escrow are available to us upon our submission to the escrow agent of a loan request. Such proceeds will not be available to LBM until payment in-full of the obligations under the LBM Credit Agreement and termination of the LBM Credit Agreement. Payments of principal and other obligations will be made to the escrow agent, while interest payments will be made directly to LBM. Provided there exists no potential default or event of default, the LBM Credit Agreement and Escrow Agreement prohibit any acceleration of repayment of any amount outstanding under the LBM Credit Agreement and prohibit termination of the LBM Credit Agreement or withdrawal from escrow of any unused portion of the available loan proceeds under the credit facility, by LBM.

During the three months ended September 30, 2019, we borrowed $2,000 under the LBM Credit Agreement which remained outstanding at September 30, 2019. There were no borrowings by us under the LBM Credit Agreement during any period prior to the three months ended September 30, 2019 from its inception (March 12, 2018).

Cash Flows

The following table summarizes the significant components of cash flows for each of the nine month periods ended September 30, 2019 and 2018, and our cash, cash equivalents, and restricted cash balances at September 30, 2019 and December 31, 2018:

	Nine Months Ended
	September 30,
	2019			2018
Net cash used for operating activities	$	(4,196	)	$	(8,889	)
Net cash used for investing activities		(610	)		(1,115	)
Net cash provided by financing activities		2,100			137
Effect of exchange rate changes on cash, cash equivalents, and restricted cash		(314	)		(294	)
Net change in cash, cash equivalents, and restricted cash	$	(3,020	)	$	(10,161	)


	September 30, 2019			December 31, 2018
Cash and cash equivalents	$	4,756		$	7,592
Restricted cash		1,364			1,548
Cash, cash equivalents, and restricted cash	$	6,120		$	9,140

Operating Activities

Net cash used for operating activities for the nine months ended September 30, 2019 was $4,196, compared with net cash used for operating activities of $8,889 for the nine months ended September 30, 2018. The net decrease in outflows of $4,693 was due to a decrease in our net loss (changes further described above) net of noncash items and a net decrease in working capital attributable to a decrease in net cash outflows related to inventory production of our 3D printing machines and the timing of payments to our suppliers and vendors for our production and operating expenses.

Investing Activities

Net cash used for investing activities for the nine months ended September 30, 2019 was $610, compared with net cash used for investing activities of $1,115 for the nine months ended September 30, 2018.

Activity for both periods included cash outflows for capital expenditures (consistent with our operating plans), offset by proceeds from the sale of property and equipment.

We expect our remaining 2019 capital expenditures to be limited to spending associated with sustaining our existing operations and strategic asset acquisition and deployment (additional estimated spending of less than $500).

In September 2019, we reached agreement with a third party for the sale of certain property and equipment associated with the former Houston, Texas facility. We expect to receive net proceeds from the sale of the property and equipment of approximately $1,000 during the three months ended December 31, 2019.

Financing Activities

Net cash provided by financing activities for the nine months ended September 30, 2019 was $2,100, compared with net cash provided by financing activities of $137 for the nine months ended September 30, 2018.

For the nine months ended September 30, 2019, net cash provided by financing activities included cash inflows of $2,000 associated with borrowings under our related party revolving credit facility and $289 associated with proceeds from the exercise of stock options by employees. These amounts were offset by cash outflows of $111 in principal payments on long-term debt and $68 associated with taxes related to the net settlement of equity-based awards.

For the nine months ended September 30, 2018, net cash provided by financing activities included cash inflows of $521 associated with proceeds from the exercise of stock options by employees. This amount was offset by cash outflows of $106 in principal payments on long-term debt and $265 in debt issuance costs associated with our related party revolving credit facility.

Off Balance Sheet Arrangements

In the normal course of our operations, our ExOne GmbH subsidiary issues financial guarantees and letters of credit to third parties in connection with certain commercial transactions requiring security. At September 30, 2019, total outstanding financial guarantees and letters of credit issued by us were $944 (€865) with expiration dates ranging from October 2019 through February 2023. At December 31, 2018, total outstanding financial guarantees and letters of credit issued by us were $1,136 (€992). For further discussion related to financial guarantees and letters of credit issued by us, refer to Note 12 to the condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Recently Issued and Adopted Accounting Guidance

Refer to Note 1 to the condensed consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q.

Critical Accounting Policies and Estimates

Refer to Note 1 to the consolidated financial statements in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2018.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are a smaller reporting company as defined by Rule 12b-2 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and are not required to provide the information under this item.

Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

Our management, including our Chief Executive Officer and Chief Financial Officer, performed an evaluation of the effectiveness of our disclosure controls and procedures as of September 30, 2019. These controls and procedures are designed to provide reasonable assurance that the information required to be disclosed in the reports that we file or submit under the Exchange Act are recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, in a manner to allow timely decisions regarding required disclosures. Based on that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of September 30, 2019 were effective.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting during the three months ended September 30, 2019, that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II – OTHER INFORMATION

Item 1. Legal Proceedings.

We are subject to various litigation, claims, and proceedings which have been or may be instituted or asserted from time to time in the ordinary course of business. Management does not believe that the outcome of any pending or threatened matters will have a material adverse effect, individually or in the aggregate, on our financial position, results of operations or cash flows.

Item 1A. Risk Factors.

There have been no material changes from the risk factors as previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2018.

Item 6. Exhibits.

The Exhibits listed on the accompanying Index to Exhibits are filed as part of this Quarterly Report on Form 10-Q.

EXHIBIT INDEX

The agreements and other documents filed as exhibits to this report are not intended to provide factual information or other disclosure other than with respect to the terms of the agreements or other documents themselves, and you should not rely on them for that purpose. In particular, any representations and warranties made by us in these agreements or other documents were made solely within the specific context of the relevant agreement or document and may not describe the actual state of affairs as of the date they were made or at any other time.

Exhibit Number	Description	Method of Filing

31.1	Rule 13(a)-14(a) Certification of Principal Executive Officer.	Filed herewith.

31.2	Rule 13(a)-14(a) Certification of Principal Financial Officer.	Filed herewith.

32	Section 1350 Certification of Principal Executive Officer and Principal Financial Officer.	Filed herewith.

101.INS	XBRL Instance Document.	Filed herewith.

101.SCH	XBRL Taxonomy Extension Schema Document.	Filed herewith.

101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.	Filed herewith.

101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.	Filed herewith.

101.LAB	XBRL Taxonomy Extension Label Linkbase Document.	Filed herewith.

101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.	Filed herewith.

Signatures

Pursuant to the requirements of the Exchange Act, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

The ExOne Company

By:		/s/ John F. Hartner
		John F. Hartner
		Chief Executive Officer
		(Principal Executive Officer)

Date:		November 7, 2019

By:		/s/ Douglas D. Zemba
		Douglas D. Zemba
		Chief Financial Officer
		(Principal Financial Officer and Principal Accounting Officer)

Date:		November 7, 2019

xone-ex311_6.htm

Exhibit 31.1

CERTIFICATIONS

I, John F. Hartner, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of The ExOne Company;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 7, 2019

The ExOne Company

/s/ John F. Hartner

John F. Hartner

Chief Executive Officer

(Principal Executive Officer)

xone-ex312_7.htm

Exhibit 31.2

CERTIFICATIONS

I, Douglas D. Zemba, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of The ExOne Company;

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 7, 2019

The ExOne Company

/s/ Douglas D. Zemba

Douglas D. Zemba

Chief Financial Officer

(Principal Financial Officer and Principal

Accounting Officer)

xone-ex32_8.htm

Exhibit 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the filing of this Quarterly Report on Form 10-Q of The ExOne Company (the “Company”) for the quarterly period ended September 30, 2019, with the Securities and Exchange Commission on the date hereof (the “Report”), the Undersigned certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: November 7, 2019

/s/ John F. Hartner

John F. Hartner

Chief Executive Officer

(Principal Executive Officer)

/s/ Douglas D. Zemba

Douglas D. Zemba

Chief Financial Officer

(Principal Financial Officer and Principal

Accounting Officer)

Equity-Based Compensation - Summary of Activity for Stock Options (Detail) - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock options outstanding, Beginning balance	621,986	674,470
Stock options granted	290,610	147,500
Stock options exercised	(40,432)	(65,833)
Stock options forfeited	(9,773)	(133,835)
Stock options expired	(34,332)	(108,332)
Stock options outstanding, Ending balance	828,059	513,970
Stock options exercisable at end of period	403,479	360,132
Stock options expected to vest at end of period	424,580	153,838
Weighted average exercise price, Beginning balance	$ 10.66	$ 11.58
Weighted average exercise price, Stock options granted	7.35	7.01
Weighted average exercise price, Stock options exercised	7.17	7.91
Weighted average exercise price, Stock options forfeited	7.67	9.44
Weighted average exercise price, Stock options expired	16.87	13.28
Weighted average exercise price, Ending balance	9.44	10.94
Weighted average exercise price, Stock options exercisable	11.30	12.41
Weighted average exercise price, Stock options expected to vest, net of forfeitures	7.68	7.49
Weighted average grant date fair value, Beginning balance	5.52	6.41
Weighted average grant date fair value, Stock options granted	2.95	3.13
Weighted average grant date fair value, Stock options exercised	3.03	3.87
Weighted average grant date fair value, Stock options forfeited	3.70	5.15
Weighted average grant date fair value, Stock options expired	10.30	7.58
Weighted average grant date fair value, Ending balance	4.56	5.89
Weighted average grant date fair value, Stock options exercisable	6.02	6.90
Weighted average grant date fair value, Stock options expected to vest, net of forfeitures	$ 3.18	$ 3.52

Fair Value Measurements - Carrying Values and Fair Values of Other Financial Instruments (Parenthetical) (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized debt issuance costs	$ 21	$ 25
Revolving Credit Facility [Member] \| Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt issuance costs	88	88
Revolving Credit Facility [Member] \| Other Noncurrent Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt issuance costs	$ 41	$ 107

Product Warranty Reserves - Summary of Changes in Product Warranty Reserves (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Guarantees [Abstract]
Balance at beginning of period	$ 1,223	$ 909	$ 1,670	$ 1,300
Provisions for new issuances	182	445	711	831
Payments	(409)	(236)	(1,257)	(564)
Reserve adjustments	(65)	(103)	(188)	(542)
Foreign currency translation adjustments	(20)	(11)	(25)	(21)
Balance at end of period	$ 911	$ 1,004	$ 911	$ 1,004

Cash, Cash Equivalents, and Restricted Cash - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash associated with cash collateral	$ 1,364	$ 1,548
German Bank [Member]
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash associated with cash collateral	857	1,044
United States Bank [Member]
Cash Cash Equivalents And Restricted Cash [Line Items]
Restricted cash associated with cash collateral	$ 507	$ 504

Leases - Future Minimum Lease Payments of Operating Lease Arrangements (Detail) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 170
2020	111
2021	76
2022	67
2023	12
Thereafter	5
Future minimum lease payments of operating lease, Total	$ 441

Other Expense (Income) – Net (Tables)

9 Months Ended

Sep. 30, 2019

Other Income And Expenses [Abstract]

Schedule of Other Expense (Income) - Net

Other expense (income) – net consisted of the following for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Gain on settlement of insurance claim	$	(16	)	$	(819	)	$	(17	)	$	(819	)
Interest income		(2	)		(6	)		(10	)		(28	)
Foreign currency gains – net		(136	)		(39	)		(85	)		(138	)
Bank fees		25			32			73			75
Other – net		(5	)		(6	)		(26	)		(26	)
	$	(134	)	$	(838	)	$	(65	)	$	(936	)

Revenue (Tables)

9 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Summary of Revenue by Product Group

The following table summarizes the Company’s revenue by product group for the periods indicated:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
3D printing machines	$	3,972	$	9,700	$	16,532	$	17,434
3D printed and other products, materials and services		6,912		6,889		19,210		21,905
	$	10,884	$	16,589	$	35,742	$	39,339

Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Schedule of Future Minimum Lease Payments of Operating Leases Arrangements

Future minimum lease payments of operating lease arrangements (with initial terms greater than twelve months) at September 30, 2019, were as follows:

2019	$	39
2020		107
2021		71
2022		58
2023		9
Thereafter		3
Total minimum lease payments		287
Less: Present value discount		(26	)
Total operating lease liabilities	$	261

Schedule of Supplemental Information Related to Operating Lease Arrangements

Supplemental information related to operating lease arrangements (with initial terms greater than twelve months) was as follows at and for the nine months ended September 30, 2019:

Operating lease right-of-use assets included in other noncurrent assets	$	261
Operating lease liabilities included in accrued expenses and other current liabilities	$	108
Operating lease liabilities included in other noncurrent liabilities	$	153
Right-of-use assets obtained in exchange for new operating lease liabilities	$	10
Cash paid for amounts included in the measurement of operating lease liabilities	$	147
Weighted average remaining lease term (in years)		2.9
Weighted average discount rate		6.6	%

Future Minimum Lease Payments of Operating Lease Arrangements

2019	$	170
2020		111
2021		76
2022		67
2023		12
Thereafter		5
	$	441

Schedule of Operating and Sales-type Lease Arrangements

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2019				2018				2019				2018
	Operating		Sales-type		Operating		Sales-type		Operating		Sales-type		Operating		Sales-type
Revenue	$	261	$	—	$	336	$	—	$	1,287	$	—	$	788	$	—
Interest income^(a)	$	—	$	21	$	—	$	12	$	—	$	76	$	—	$	38


(a)	Interest income relating to sales-type leases is recorded as a component of revenue in the accompanying condensed statement of consolidated operations and comprehensive loss for each of the periods presented.

Schedule of Net Investment in Sales-type Leases

The Company’s net investment in sales-type leases consisted of the following as of the dates indicated:

	September 30,			December 31,
	2019			2018
Future minimum lease payments receivable	$	1,650		$	1,969
Less: Allowance for doubtful accounts		(412	)		—
Net future minimum lease payments receivable		1,238			1,969
Less: Unearned interest income		(236	)		(316	)
Net investment in sales-type leases	$	1,002		$	1,653

Schedule of Future Minimum Lease Payment Receivable of Non-Cancellable Operating and Sales-type Lease

Future minimum lease payments of non-cancellable operating and sales-type lease arrangements at September 30, 2019, were as follows:

	Operating		Sales-type
2019	$	278	$	112
2020		259		377
2021		48		377
2022		—		377
2023		—		407
Thereafter		—		—
Total minimum lease payments	$	585	$	1,650
Less: Allowance for doubtful accounts				(412	)
Less: Present value discount				(236	)
Future minimum lease payments receivable			$	1,002

Schedule of Future Minimum Lease or Rental Payments of Non-Cancellable Operating and Sales-type Lease

As previously disclosed under the prior lease accounting standard, minimum future rentals under non-cancellable operating and sales-type lease arrangements at December 31, 2018, were as follows:

	Operating		Sales-type
2019	$	687	$	409
2020		148		382
2021		48		382
2022		—		382
2023		—		414
Thereafter		—		—
	$	883	$	1,969

Leases

9 Months Ended

Sep. 30, 2019

Leases [Abstract]

Leases

Note 11. Leases

Lessee

The Company uses its incremental borrowing rate in determining the present value of lease payments, as the implicit rate of the lease arrangements is generally not readily determinable.

Future minimum lease payments of operating lease arrangements (with initial terms greater than twelve months) at September 30, 2019, were as follows:

2019	$	39
2020		107
2021		71
2022		58
2023		9
Thereafter		3
Total minimum lease payments		287
Less: Present value discount		(26	)
Total operating lease liabilities	$	261

Supplemental information related to operating lease arrangements (with initial terms greater than twelve months) was as follows at and for the nine months ended September 30, 2019:

Operating lease right-of-use assets included in other noncurrent assets	$	261
Operating lease liabilities included in accrued expenses and other current liabilities	$	108
Operating lease liabilities included in other noncurrent liabilities	$	153
Right-of-use assets obtained in exchange for new operating lease liabilities	$	10
Cash paid for amounts included in the measurement of operating lease liabilities	$	147
Weighted average remaining lease term (in years)		2.9
Weighted average discount rate		6.6	%

2019	$	170
2020		111
2021		76
2022		67
2023		12
Thereafter		5
	$	441

Lessor

The Company has elected, as a practical expedient, not to separate non-lease components from lease components, and instead account for each separate component as a single lease component for all lease arrangements, as lessor. Sales, value add, and other taxes collected from customers and remitted to governmental authorities are accounted for on a net (excluded from lease income) basis. In determination of the lease term, the Company considers the likelihood of lease renewal options and lease termination provisions. Additionally, certain of the Company’s lease arrangements do not qualify as sale-type leases as collectability is not reasonably assured.

	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2019				2018				2019				2018
	Operating		Sales-type		Operating		Sales-type		Operating		Sales-type		Operating		Sales-type
Revenue	$	261	$	—	$	336	$	—	$	1,287	$	—	$	788	$	—
Interest income^(a)	$	—	$	21	$	—	$	12	$	—	$	76	$	—	$	38


(a)	Interest income relating to sales-type leases is recorded as a component of revenue in the accompanying condensed statement of consolidated operations and comprehensive loss for each of the periods presented.

The Company’s net investment in sales-type leases consisted of the following as of the dates indicated:

	September 30,			December 31,
	2019			2018
Future minimum lease payments receivable	$	1,650		$	1,969
Less: Allowance for doubtful accounts		(412	)		—
Net future minimum lease payments receivable		1,238			1,969
Less: Unearned interest income		(236	)		(316	)
Net investment in sales-type leases	$	1,002		$	1,653

Future minimum lease payments of non-cancellable operating and sales-type lease arrangements at September 30, 2019, were as follows:

	Operating		Sales-type
2019	$	278	$	112
2020		259		377
2021		48		377
2022		—		377
2023		—		407
Thereafter		—		—
Total minimum lease payments	$	585	$	1,650
Less: Allowance for doubtful accounts				(412	)
Less: Present value discount				(236	)
Future minimum lease payments receivable			$	1,002

As previously disclosed under the prior lease accounting standard, minimum future rentals under non-cancellable operating and sales-type lease arrangements at December 31, 2018, were as follows:

	Operating		Sales-type
2019	$	687	$	409
2020		148		382
2021		48		382
2022		—		382
2023		—		414
Thereafter		—		—
	$	883	$	1,969

Impairment

9 Months Ended

Sep. 30, 2019

Asset Impairment Charges [Abstract]

Impairment

Note 7. Impairment

Condensed Consolidated Balance Sheet - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 4,756	$ 7,592
Restricted cash	1,364	1,548
Accounts receivable ̶ net	3,711	6,393
Current portion of net investment in sales-type leases	210	302
Inventories ̶ net	18,610	15,930
Prepaid expenses and other current assets	3,219	2,438
Total current assets	31,870	34,203
Property and equipment ̶ net	39,146	41,906
Net investment in sales-type leases ̶ net of current portion	792	1,351
Other noncurrent assets	408	222
Total assets	72,216	77,682
Current liabilities:
Current portion of long-term debt	151	144
Accounts payable	6,035	4,376
Accrued expenses and other current liabilities	4,116	6,049
Current portion of contract liabilities	8,824	2,343
Total current liabilities	19,126	12,912
Related party revolving credit facility	2,000
Long-term debt ̶ net of current portion	1,250	1,364
Contract liabilities ̶ net of current portion	227	527
Other noncurrent liabilities	250	104
Total liabilities	22,853	14,907
Contingencies and commitments
Stockholders' equity
Common stock, $0.01 par value, 200,000,000 shares authorized, 16,346,960 (2019) and 16,234,201 (2018) shares issued and outstanding	163	162
Additional paid-in capital	176,510	175,214
Accumulated deficit	(114,982)	(101,853)
Accumulated other comprehensive loss	(12,328)	(10,748)
Total stockholders' equity	49,363	62,775
Total liabilities and stockholders' equity	$ 72,216	$ 77,682

Other Expense (Income) – Net

9 Months Ended

Sep. 30, 2019

Other Income And Expenses [Abstract]

Other Expense (Income) – Net

Note 19. Other Expense (Income) – Net

Other expense (income) – net consisted of the following for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Gain on settlement of insurance claim	$	(16	)	$	(819	)	$	(17	)	$	(819	)
Interest income		(2	)		(6	)		(10	)		(28	)
Foreign currency gains – net		(136	)		(39	)		(85	)		(138	)
Bank fees		25			32			73			75
Other – net		(5	)		(6	)		(26	)		(26	)
	$	(134	)	$	(838	)	$	(65	)	$	(936	)

Equity-Based Compensation

9 Months Ended

Sep. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Equity-Based Compensation

Note 15. Equity-Based Compensation

The following table summarizes the total equity-based compensation expense recognized by the Company for the periods indicated:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2019			2018		2019		2018
Equity-based compensation expense recognized:
Stock options	$	195		$	103	$	511	$	131
Restricted stock		171			108		545		314
Other^(a)		(371	)		71		20		211
Total equity-based compensation expense before income taxes		(5	)		282		1,076		656
Benefit for income taxes^(b)		—			—		—		—
Total equity-based compensation expense net of income taxes	$	(5	)	$	282	$	1,076	$	656


(a)	For the three months and nine months ended September 30, 2019, Other represents activity associated with the 2019 Program and other employee contractual amounts to be settled in equity. For the three months and nine months ended September 30, 2018, Other represents activity associated with the 2018 Program and other employee contractual amounts to be settled in equity.
(b)	The benefit for income taxes from equity-based compensation for each of the periods presented has been determined to be $0 based on valuation allowances against net deferred tax assets.

The fair value of stock options granted was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions for the periods indicated:

	Nine Months Ended
	September 30,
	2019	2018
Weighted average fair value per stock option	$2.77 - $3.68	$3.01 - $3.77
Volatility	54.0% - 60.1%	62.6% - 63.7%
Average risk-free interest rate	1.5% - 2.5%	2.5% - 2.7%
Dividend yield	0.0%	0.0%
Expected term (years)	2.5 - 3.5	3.1 - 3.3

The activity for stock options was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019							2018
	Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value
Outstanding at beginning of period		621,986		$	10.66	$	5.52		674,470		$	11.58	$	6.41
Stock options granted		290,610		$	7.35	$	2.95		147,500		$	7.01	$	3.13
Stock options exercised		(40,432	)	$	7.17	$	3.03		(65,833	)	$	7.91	$	3.87
Stock options forfeited		(9,773	)	$	7.67	$	3.70		(133,835	)	$	9.44	$	5.15
Stock options expired		(34,332	)	$	16.87	$	10.30		(108,332	)	$	13.28	$	7.58
Outstanding at end of period		828,059		$	9.44	$	4.56		513,970		$	10.94	$	5.89
Stock options exercisable at end of period		403,479		$	11.30	$	6.02		360,132		$	12.41	$	6.90
Stock options expected to vest at end of period		424,580		$	7.68	$	3.18		153,838		$	7.49	$	3.52

The activity for restricted stock was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019					2018
	Shares of Restricted Stock			Weighted Average Grant Date Fair Value		Shares of Restricted Stock			Weighted Average Grant Date Fair Value
Outstanding at beginning of period		67,001		$	8.30		52,502		$	11.07
Restricted stock granted		66,763		$	8.98		57,000		$	7.39
Restricted stock vested		(62,251	)	$	8.65		(42,501	)	$	10.51
Restricted stock forfeited		(5,000	)	$	6.75		—		$	—
Outstanding at end of period		66,513		$	8.76		67,001		$	8.30
Restricted stock expected to vest at end of period		66,513		$	8.76		67,001		$	8.30

Restricted stock that vested during the nine months ended September 30, 2019 and 2018, had a fair value of $535 and $326, respectively.

Basis of Presentation

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Basis of Presentation

Note 1. Basis of Presentation

Organization

Basis of Presentation

Recently Adopted Accounting Guidance

On January 1, 2019, the Company adopted FASB ASU 2014-09, “Revenue from Contracts with Customers.” This ASU created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue and, therefore, supersedes virtually all existing revenue recognition requirements and guidance. This framework is expected to provide a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: identify the contract(s) with a customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract(s), and recognize revenue when, or as, the entity satisfies a performance obligation. The Company adopted this guidance using the modified retrospective approach. Revenue from the Company’s sale of three-dimensional (“3D”) printing machines and 3D printed and other products, materials and services continues to generally be recognized when the related machines, products or materials are delivered or accepted by the Company’s customers or as the related services are performed by the Company. As such, the adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. The Company has included the enhanced disclosures required by this guidance in its condensed consolidated financial statements (Note 5).

Recently Issued Accounting Guidance

Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Computation of Basic and Diluted Loss Per Common Share

The information used to compute basic and diluted net loss per common share was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Net loss	$	(4,844	)	$	(323	)	$	(13,129	)	$	(14,745	)
Weighted average shares outstanding (basic and diluted)		16,332,974			16,182,818			16,296,554			16,157,143
Net loss per common share:
Basic	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)
Diluted	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Including Accrued Interest and Penalties) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Balance at beginning of period	$ 105	$ 1,871	$ 1,186	$ 1,775
Additions for tax positions of prior years	2	38	4	156
Reductions for tax positions of prior years		(487)	(1,075)	(487)
Foreign currency translation adjustments	(5)	(16)	(13)	(38)
Balance at end of period	$ 102	$ 1,406	$ 102	$ 1,406

Leases - Schedule of Future Minimum Lease or Rental Payments of Non-Cancellable Operating and Sales-type Lease (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating lease arrangements
2019	$ 687
2020	148
2021	48
Operating leases, future minimum payments receivable	883
Sales-lease type arrangements
2019	409
2020	382
2021	382
2022	382
2023	414
Sales-type leases, future minimum payments receivable	$ 1,969

Restructuring - Additional Information (Detail) - USD ($)	3 Months Ended					9 Months Ended
	Dec. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Sep. 30, 2018
Restructuring Cost And Reserve [Line Items]
Gain (loss) on disposal of assets						$ 2,000	$ 33,000
Proceeds from sale of property and equipment						3,000	77,000
Houston, Texas 3D Printing Operations [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges		$ 28,000
Asset impairment charges		1,000
Additional charges expected to be incurred		0					$ 0
Houston, Texas 3D Printing Operations [Member] \| Prepaid Expenses and Other Current Assets [Member]
Restructuring Cost And Reserve [Line Items]
Expected sale of certain property and equipment						$ 822,000
Houston, Texas 3D Printing Operations [Member] \| Scenario Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Gain (loss) on disposal of assets	$ 200,000
Proceeds from sale of property and equipment	$ 1,000,000
Houston, Texas 3D Printing Operations [Member] \| Cost of Sales [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges		15,000
Houston, Texas 3D Printing Operations [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges		$ 13,000
Desenzano Del Garada, Italy 3D Printing Operations [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges					$ 72,000
Asset impairment charges			$ 13,000	$ 228,000
Additional charges expected to be incurred			0
Gain (loss) on disposal of assets			$ 51,000
Total restructuring charges				245,000
Other exit costs				$ 17,000
Desenzano Del Garada, Italy 3D Printing Operations [Member] \| Cost of Sales [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges					19,000
Desenzano Del Garada, Italy 3D Printing Operations [Member] \| Selling, General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Involuntary employee terminations charges					$ 53,000

Liquidity - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended	9 Months Ended		19 Months Ended
Liquidity - Additional Information (Detail) - USD ($)	Mar. 12, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Net loss			$ (4,844,000)	$ (13,129,000)	$ (14,745,000)
Cash and cash equivalents			4,756,000	4,756,000		$ 4,756,000	$ 7,592,000
Initial And Secondary Public Offerings [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Cumulative unrestricted net proceeds from common stock						168,361,000
Revolving Credit Facility [Member] \| LBM Holdings, LLC [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Credit facility, expiration period	3 years	3 years
Line of credit facility, maximum borrowing capacity	$ 15,000,000	$ 15,000,000
Line of credit facility, remaining borrowing capacity			$ 13,000,000	$ 13,000,000		$ 13,000,000

Loss Per Share - Computation of Basic and Diluted Loss Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net loss	$ (4,844)	$ (3,789)	$ (4,496)	$ (323)	$ (8,037)	$ (6,385)	$ (13,129)	$ (14,745)
Weighted average shares outstanding (basic and diluted)	16,332,974			16,182,818			16,296,554	16,157,143
Net loss per common share:
Basic	$ (0.30)			$ (0.02)			$ (0.81)	$ (0.91)
Diluted	$ (0.30)			$ (0.02)			$ (0.81)	$ (0.91)

Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Summary of Changes in the Components of Accumulated Other Comprehensive Loss

The following table summarizes changes in the components of accumulated other comprehensive loss for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Foreign currency translation adjustments
Balance at beginning of period	$	(10,941	)	$	(10,322	)	$	(10,748	)	$	(9,484	)
Other comprehensive loss		(1,387	)		(429	)		(1,580	)		(1,267	)
Balance at end of period	$	(12,328	)	$	(10,751	)	$	(12,328	)	$	(10,751	)

Related Party Transactions

9 Months Ended

Sep. 30, 2019

Related Party Transactions

Note 18. Related Party Transactions

Purchases of products and/or services from related parties during the three months ended September 30, 2019 and 2018, were $5 and $4, respectively. Purchases of products and/or services from related parties during the nine months ended September 30, 2019 and 2018, were $63 and $16, respectively. Purchases of products and/or services by the Company during each of the respective periods primarily included website design services and leased office space (through July 2019) from related parties under common control by S. Kent Rockwell (currently the Chairman of the Board of the Company and previously the Executive Chairman and Chief Executive Officer of the Company). Also included in purchases of products and/or services by the Company during the nine months ended September 30, 2019, was the purchase of a 3D printing machine and certain ancillary equipment for $30 from an educational institution determined to be a related party on the basis that S. Kent Rockwell serves as a trustee of the educational institution.

None of the transactions met a threshold requiring review and approval by the Audit Committee of the Board.

Refer to Note 13 for further discussion relating to a revolving credit facility with a related party entered into in March 2018.

Condensed Statement of Consolidated Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenue	$ 10,884	$ 16,589	$ 35,742	$ 39,339
Cost of sales	8,006	10,016	25,080	28,560
Gross profit	2,878	6,573	10,662	10,779
Operating expenses
Research and development	2,430	2,444	7,399	8,474
Selling, general and administrative	5,326	5,200	16,916	17,755
Total operating expenses	7,756	7,644	24,315	26,229
Loss from operations	(4,878)	(1,071)	(13,653)	(15,450)
Other expense (income)
Interest expense	85	73	227	179
Other income ̶ net	(134)	(838)	(65)	(936)
Total other expense (income)	(49)	(765)	162	(757)
Loss before income taxes	(4,829)	(306)	(13,815)	(14,693)
Provision (benefit) for income taxes	15	17	(686)	52
Net loss	$ (4,844)	$ (323)	$ (13,129)	$ (14,745)
Net loss per common share:
Basic	$ (0.30)	$ (0.02)	$ (0.81)	$ (0.91)
Diluted	$ (0.30)	$ (0.02)	$ (0.81)	$ (0.91)
Comprehensive loss:
Net loss	$ (4,844)	$ (323)	$ (13,129)	$ (14,745)
Other comprehensive loss:
Foreign currency translation adjustments	(1,387)	(429)	(1,580)	(1,267)
Comprehensive loss	$ (6,231)	$ (752)	$ (14,709)	$ (16,012)

Condensed Statement of Changes in Consolidated Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2017	$ 75,209	$ 161	$ 173,718	$ (89,186)	$ (9,484)
Beginning Balance, Shares at Dec. 31, 2017		16,125,000
Net loss	(6,385)			(6,385)
Other comprehensive income (loss)	1,402				1,402
Equity-based compensation	379		379
Common stock issued from equity incentive plan, shares		25,000
Ending Balance at Mar. 31, 2018	70,605	$ 161	174,097	(95,571)	(8,082)
Ending Balance, Shares at Mar. 31, 2018		16,150,000
Beginning Balance at Dec. 31, 2017	75,209	$ 161	173,718	(89,186)	(9,484)
Beginning Balance, Shares at Dec. 31, 2017		16,125,000
Net loss	$ (14,745)
Exercise of employee stock options, shares	65,833
Ending Balance at Sep. 30, 2018	$ 60,374	$ 162	174,894	(103,931)	(10,751)
Ending Balance, Shares at Sep. 30, 2018		16,233,000
Beginning Balance at Mar. 31, 2018	70,605	$ 161	174,097	(95,571)	(8,082)
Beginning Balance, Shares at Mar. 31, 2018		16,150,000
Net loss	(8,037)			(8,037)
Other comprehensive income (loss)	(2,240)				(2,240)
Equity-based compensation	(5)		(5)
Ending Balance at Jun. 30, 2018	60,323	$ 161	174,092	(103,608)	(10,322)
Ending Balance, Shares at Jun. 30, 2018		16,150,000
Net loss	(323)			(323)
Other comprehensive income (loss)	(429)				(429)
Equity-based compensation	282		282
Exercise of employee stock options	521	$ 1	520
Exercise of employee stock options, shares		66,000
Common stock issued from equity incentive plan, shares		17,000
Ending Balance at Sep. 30, 2018	60,374	$ 162	174,894	(103,931)	(10,751)
Ending Balance, Shares at Sep. 30, 2018		16,233,000
Beginning Balance at Dec. 31, 2018	$ 62,775	$ 162	175,214	(101,853)	(10,748)
Beginning Balance, Shares at Dec. 31, 2018	16,234,201	16,234,000
Net loss	$ (4,496)			(4,496)
Other comprehensive income (loss)	(776)				(776)
Equity-based compensation	439		439
Exercise of employee stock options	165	$ 1	164
Exercise of employee stock options, shares		23,000
Taxes related to the net share settlement of equity-based awards	(68)		(68)
Common stock issued from equity incentive plan, shares		38,000
Ending Balance at Mar. 31, 2019	58,039	$ 163	175,749	(106,349)	(11,524)
Ending Balance, Shares at Mar. 31, 2019		16,295,000
Beginning Balance at Dec. 31, 2018	$ 62,775	$ 162	175,214	(101,853)	(10,748)
Beginning Balance, Shares at Dec. 31, 2018	16,234,201	16,234,000
Net loss	$ (13,129)
Exercise of employee stock options, shares	40,432
Ending Balance at Sep. 30, 2019	$ 49,363	$ 163	176,510	(114,982)	(12,328)
Ending Balance, Shares at Sep. 30, 2019	16,346,960	16,347,000
Beginning Balance at Mar. 31, 2019	$ 58,039	$ 163	175,749	(106,349)	(11,524)
Beginning Balance, Shares at Mar. 31, 2019		16,295,000
Net loss	(3,789)			(3,789)
Other comprehensive income (loss)	583				583
Equity-based compensation	642		642
Exercise of employee stock options	97		97
Exercise of employee stock options, shares		13,000
Common stock issued from equity incentive plan, shares		10,000
Ending Balance at Jun. 30, 2019	55,572	$ 163	176,488	(110,138)	(10,941)
Ending Balance, Shares at Jun. 30, 2019		16,318,000
Net loss	(4,844)			(4,844)
Other comprehensive income (loss)	(1,387)				(1,387)
Equity-based compensation	(5)		(5)
Exercise of employee stock options	27		27
Exercise of employee stock options, shares		4,000
Common stock issued from equity incentive plan, shares		25,000
Ending Balance at Sep. 30, 2019	$ 49,363	$ 163	$ 176,510	$ (114,982)	$ (12,328)
Ending Balance, Shares at Sep. 30, 2019	16,346,960	16,347,000

Income Taxes

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 14. Income Taxes

The Company has a liability for uncertain tax positions related to certain intercompany transactions.

A reconciliation of the beginning and ending amount of unrecognized tax benefits (including accrued interest and penalties) was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	105		$	1,871		$	1,186		$	1,775
Additions based on tax positions related to the current year		—			—			—			—
Additions for tax positions of prior years		2			38			4			156
Reductions for tax positions of prior years		—			(487	)		(1,075	)		(487	)
Settlements		—			—			—			—
Foreign currency translation adjustments		(5	)		(16	)		(13	)		(38	)
Balance at end of period	$	102		$	1,406		$	102		$	1,406

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2019	Dec. 31, 2018
Schedule Of Income Taxes [Line Items]
Provision (benefit) for income taxes	$ 15,000	$ 17,000	$ (686,000)	$ 52,000
Effective tax rate	0.30%	5.60%	5.00%	0.40%
United States statutory rate	21.00%	21.00%	21.00%	21.00%
Penalties and interest expense	$ 0	$ 0	$ 0	$ 0
Unrecognized tax benefits including accrued interest and penalties	$ 0		$ 0			$ 820,000
Subsidiaries [Member] \| Local Taxing Authorities [Member] \| Germany [Member]
Schedule Of Income Taxes [Line Items]
Reversal of previously recorded liabilities for uncertain tax positions					$ 1,075,000
Uncertain tax positions expected amount to be offset against net operating loss carryforwards					$ 257,000

Leases - Schedule of Future Minimum Lease Payment Receivable of Non-Cancellable Operating and Sales-type Lease (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating lease arrangements
2019	$ 278
2020	259
2021	48
Total minimum lease payments	585
Sales-type lease arrangements
2019	112
2020	377
2021	377
2022	377
2023	407
Total minimum lease payments	1,650
Less: Allowance for doubtful accounts	(412)
Less: Present value discount	(236)
Future minimum sales-type lease payments receivable	$ 1,002

Accumulated Other Comprehensive Loss - Summary of Changes in the Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Balance at beginning of period	$ (10,941)	$ (10,322)	$ (10,748)	$ (9,484)
Other comprehensive loss	(1,387)	(429)	(1,580)	(1,267)
Balance at end of period	$ (12,328)	$ (10,751)	$ (12,328)	$ (10,751)

Revenue - Summary of Revenue by Product Group (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from External Customer [Line Items]
Revenue	$ 10,884	$ 16,589	$ 35,742	$ 39,339
3D Printing Machines [Member]
Revenue from External Customer [Line Items]
Revenue	3,972	9,700	16,532	17,434
3D Printed and Other Products, Materials and Services [Member]
Revenue from External Customer [Line Items]
Revenue	$ 6,912	$ 6,889	$ 19,210	$ 21,905

Impairment - Additional Information (Detail)	9 Months Ended
Impairment - Additional Information (Detail)	Sep. 30, 2019 USD ($) Asset_Group
Asset Impairment Charges [Abstract]
Number of operating asset groups \| Asset_Group	3
Long-lived assets held for use impairment loss \| $	$ 0

Equity-Based Compensation - Summary of Activity for Restricted Stock Awards (Detail) - Restricted Stock [Member] - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Restricted Shares, outstanding, Beginning Balance	67,001	52,502
Number of Restricted Shares, granted	66,763	57,000
Number of Restricted Shares, vested	(62,251)	(42,501)
Number of Restricted Shares, forfeited	(5,000)	0
Number of Restricted Shares, outstanding, Ending Balance	66,513	67,001
Number of Restricted Shares, expected to vest	66,513	67,001
Weighted Average Grant Date Fair Value, Beginning Balance	$ 8.30	$ 11.07
Weighted Average Grant Date Fair Value, granted	8.98	7.39
Weighted Average Grant Date Fair Value, vested	8.65	10.51
Weighted Average Grant Date Fair Value, forfeited	6.75	0
Weighted Average Grant Date Fair Value, Ending Balance	8.76	8.30
Weighted Average Grant Date Fair Value, expected to vest	$ 8.76	$ 8.30

Concentration of Credit Risk - Additional Information (Detail) - Five Most Significant Customers [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Revenue, Major Customer [Line Items]
Accounts receivable from significant customers	$ 638		$ 638		$ 2,344
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Revenue, Major Customer [Line Items]
Revenue concentration, by most significant customers	30.20%	34.60%	23.80%	17.90%

Leases - Schedule of Supplemental Information Related to Operating Lease Arrangements (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Leases [Abstract]
Operating lease right-of-use assets included in other noncurrent assets	$ 261
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent
Operating lease liabilities included in accrued expenses and other current liabilities	$ 108
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	xone:AccruedExpensesAndOtherCurrentLiabilitiesMember
Operating lease liabilities included in other noncurrent liabilities	$ 153
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherNoncurrentLiabilitiesMember
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 10
Cash paid for amounts included in the measurement of operating lease liabilities	$ 147
Weighted average remaining lease term (in years)	2 years 10 months 24 days
Weighted average discount rate	6.60%

Product Warranty Reserves - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2019
Product Warranties Disclosures [Abstract]
Standard product warranty period	Substantially all of the Company’s 3D printing machines are covered by a standard twelve-month warranty. Generally, at the time of sale, a liability is recorded (with an offset to cost of sales) based upon the expected cost of replacement parts and labor to be incurred over the life of the standard warranty.

Cash, Cash Equivalents, and Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Cash And Cash Equivalents [Abstract]
Cash and cash equivalents	$ 4,756	$ 7,592
Restricted cash	1,364	1,548
Cash, cash equivalents, and restricted cash	$ 6,120	$ 9,140

Cash, Cash Equivalents, and Restricted Cash (Tables)

9 Months Ended

Sep. 30, 2019

Cash And Cash Equivalents [Abstract]

Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash

	September 30,		December 31,
	2019		2018
Cash and cash equivalents	$	4,756	$	7,592
Restricted cash		1,364		1,548
Cash, cash equivalents, and restricted cash	$	6,120	$	9,140

Income Taxes (Tables)

9 Months Ended

Sep. 30, 2019

Income Tax Disclosure [Abstract]

Reconciliation of Unrecognized Tax Benefits (Including Accrued Interest and Penalties)

A reconciliation of the beginning and ending amount of unrecognized tax benefits (including accrued interest and penalties) was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	105		$	1,871		$	1,186		$	1,775
Additions based on tax positions related to the current year		—			—			—			—
Additions for tax positions of prior years		2			38			4			156
Reductions for tax positions of prior years		—			(487	)		(1,075	)		(487	)
Settlements		—			—			—			—
Foreign currency translation adjustments		(5	)		(16	)		(13	)		(38	)
Balance at end of period	$	102		$	1,406		$	102		$	1,406

Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
State of incorporation	DE
Date of incorporation	Jan. 01, 2013
Contract liabilities ̶ net of current portion	$ 227	$ 527
Current portion of net investment in sales-type leases	210	302
Net investment in sales-type leases ̶ net of current portion	792	$ 1,351
Right-of-use assets	261
Lease liability	261
ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Right-of-use assets	400
Lease liability	$ 400
Subsidiary Guarantors [Member]
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of ownership in subsidiary guarantors	100.00%

Product Warranty Reserves

9 Months Ended

Sep. 30, 2019

Product Warranties Disclosures [Abstract]

Product Warranty Reserves

Note 10. Product Warranty Reserves

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	1,223		$	909		$	1,670		$	1,300
Provisions for new issuances		182			445			711			831
Payments		(409	)		(236	)		(1,257	)		(564	)
Reserve adjustments		(65	)		(103	)		(188	)		(542	)
Foreign currency translation adjustments		(20	)		(11	)		(25	)		(21	)
Balance at end of period	$	911		$	1,004		$	911		$	1,004

Restructuring

9 Months Ended

Sep. 30, 2019

Restructuring And Related Activities [Abstract]

Restructuring

Note 6. Restructuring

Houston, Texas

Desenzano del Garda, Italy

In December 2017, the Company committed to a plan to consolidate certain of its 3D printing operations from its Desenzano del Garda, Italy facility into its Gersthofen, Germany facility. These actions were taken as part of the Company’s efforts to optimize its business model and maximize its facility utilization. During the three months ended December 31, 2017, the Company recorded a charge of $72 split between cost of sales ($19) and selling, general and administrative expense ($53) associated with involuntary employee terminations related to this plan. During the three months ended March 31, 2018, the Company recorded an additional charge of $245 associated with other exit costs ($17) and asset impairments ($228) related to this plan. During the three months ended June 30, 2018, the Company recorded an additional charge of $13 associated with asset impairments related to this plan. In addition, during the three months ended June 30, 2018, the Company recorded a gain from disposal of certain property and equipment of $51 (recorded to cost of sales in the accompanying condensed statement of consolidated operations and comprehensive loss). Charges associated with other exit costs recorded during the six months ended June 30, 2018 were recorded to cost of sales in the accompanying condensed statement of consolidated operations and comprehensive loss. Charges associated with asset impairments recorded during the three and six months ended June 30, 2018 were recorded to cost of sales as a component of depreciation expense in the accompanying condensed statement of consolidated operations and comprehensive loss. Other exit costs relate to the remaining facility rent due under a non-cancellable operating lease following the cessation of operations at the facility in January 2018. Asset impairment charges relate to certain leasehold improvements associated with the exited facility and other equipment which was abandoned by the Company. There are no additional charges expected to be incurred associated with this plan in future periods. The Company settled all amounts associated with involuntary employee terminations and other exit costs (remaining facility rent payments) during 2018.

Liquidity

9 Months Ended

Sep. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Liquidity

Note 2. Liquidity

Subsequent Events

9 Months Ended

Sep. 30, 2019

Subsequent Events [Abstract]

Subsequent Events

Note 20. Subsequent Events

Fair Value Measurements

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 16. Fair Value Measurements

Level 1		Observable inputs such as quoted prices in active markets for identical investments that the Company has the ability to access.

Level 2		Inputs include:

		Quoted prices for similar assets or liabilities in active markets;

		Quoted prices for identical or similar assets or liabilities in inactive markets;

		Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and

		Inputs that are derived principally from, or corroborated by, observable market data by correlation or other means.

Level 3		Inputs that are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability.

At September 30, 2019 and December 31, 2018, the Company had no financial instruments (assets or liabilities) measured at fair value on a recurring basis.

The carrying values and fair values of other financial instruments (assets and liabilities) not required to be recorded at fair value were as follows as of the dates indicated:

	September 30,				December 31,
	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Cash and cash equivalents	$	4,756	$	4,756	$	7,592	$	7,592
Restricted cash	$	1,364	$	1,364	$	1,548	$	1,548
Debt issuance costs^(a)	$	129	$	—	$	195	$	—
Current portion of long-term debt^(b)	$	151	$	155	$	144	$	149
Long-term debt ̶ net of current portion^(b)	$	1,250	$	1,267	$	1,364	$	1,384

(a)

(b)	Carrying values at September 30, 2019 and December 31, 2018 are net of unamortized debt issuance costs of $21 and $25, respectively.

Condensed Consolidated Balance Sheet (Parenthetical) - $ / shares	Sep. 30, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	16,346,960	16,234,201
Common stock, shares outstanding	16,346,960	16,234,201

Loss Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock Option [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential shares of anti-dilutive common stock	828,059	513,970	828,059	513,970
Restricted Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potential shares of anti-dilutive common stock	66,513	67,001	66,513	67,001

Revenue - Additional Information (Detail 1) $ in Thousands	Sep. 30, 2019 USD ($)
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 25,800
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-10-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 21,700
Revenue, remaining performance obligation, Expected timing of satisfaction, period	12 months

Contingencies and Commitments - Additional Information (Detail) - Germany [Member] - German Bank [Member] € in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 EUR (€)	Dec. 31, 2018 USD ($)	Dec. 31, 2018 EUR (€)
Line Of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 1,400,000	€ 1,300
Credit facility, minimum increments	100,000	100
Credit facility, commitment fee	$ 0
Minimum [Member]
Line Of Credit Facility [Line Items]
Debt Instrument, term	30 days
Commercial Transactions Requiring Security [Member]
Line Of Credit Facility [Line Items]
Credit facility, interest rate	1.75%
Credit facility, outstanding amount			$ 1,044,000	€ 912
Commercial Transactions Requiring Security [Member] \| Separate Agreements for Additional Capacity for Financial Guarantees and Letters of Credit [Member]
Line Of Credit Facility [Line Items]
Credit facility, outstanding amount	$ 87,000	80	96,000	€ 80
Expiration date, description	February 2023
Overdraft Credit [Member]
Line Of Credit Facility [Line Items]
Credit facility, interest rate	10.20%
Outstanding borrowings in form of overdraft credit or short-term loans	$ 0		0
Short-Term Loans [Member]
Line Of Credit Facility [Line Items]
Outstanding borrowings in form of overdraft credit or short-term loans	0		$ 0
Commercial Transactions Requiring Security Expiring From July Twenty Nineteen Through November Twenty Nineteen [Member]
Line Of Credit Facility [Line Items]
Credit facility, outstanding amount	$ 857,000	€ 785
Expiration date, description	October 2019 through March 2020

Leases - Schedule of Operating and Sales-type Lease Arrangements (Detail) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Leases [Abstract]

Operating lease revenue

$ 261

$ 336

$ 1,287

$ 788

Sales-type lease interest income

^[1]

$ 21

$ 12

$ 76

$ 38

[1]	Interest income relating to sales-type leases is recorded as a component of revenue in the accompanying condensed statement of consolidated operations and comprehensive loss for each of the periods presented.

Equity-Based Compensation - Additional Information (Detail) - USD ($)		3 Months Ended	9 Months Ended
	Jan. 24, 2013	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average remaining vesting period			1 year 6 months
Proceeds from exercise of employee stock options			$ 289,000	$ 521,000
Cash payment for taxes relating to net settlement of equity based awards			68,000	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total future compensation expense		$ 992,000	992,000
Intrinsic value, stock options expected to vest		557,000	557,000
Intrinsic value, stock options exercisable		232,000	$ 232,000
Weighted average remaining contractual term of stock options exercisable			4 years
Weighted average remaining contractual term of stock options expected to vest			4 years 6 months
Intrinsic value of stock options exercised			$ 358,000	574,000
Proceeds from exercise of employee stock options			289,000	521,000
Income tax benefit			0
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total future compensation expense		$ 293,000	293,000
Fair value of restricted shares vested			$ 535,000	$ 326,000
Maximum [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Stock options contractual expiration period			10 years
Maximum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Minimum [Member] \| Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
Stock options contractual expiration period			5 years
Minimum [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			1 year
2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance	500,000
Remaining shares available for future issuance		654,134	654,134
2013 Equity Incentive Plan [Member] \| Common Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of outstanding shares of common stock	3.00%
Number of Shares authorized	1,992,241
2019 Annual Incentive Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation expense, net reversal		$ 376,000

Leases - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
Leases - Additional Information (Detail) - USD ($)	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Leases [Line Items]
Lease expiration year			2026
Short term lease cost	$ 44,000		$ 156,000
Lease cost	94,000		305,000
Provision for bad debt lease	$ 416,000	$ 0	$ 416,000	$ 0
Minimum [Member]
Leases [Line Items]
Operating lease arrangement terms	1 year		1 year
Maximum [Member]
Leases [Line Items]
Operating lease arrangement terms	5 years		5 years
Related Parties Under Common Control [Member]
Leases [Line Items]
Short term lease cost	$ 4,000		$ 28,000

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials and components	$ 8,734	$ 7,747
Work in process	6,099	5,147
Finished goods	3,777	3,036
Inventories	$ 18,610	$ 15,930

Other Expense (Income) - Net - Schedule of Other Expense (Income) - Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income And Expenses [Abstract]
Gain on settlement of insurance claim	$ (16)	$ (819)	$ (17)	$ (819)
Interest income	(2)	(6)	(10)	(28)
Foreign currency gains – net	(136)	(39)	(85)	(138)
Bank fees	25	32	73	75
Other – net	(5)	(6)	(26)	(26)
Other expense (income) - net	$ (134)	$ (838)	$ (65)	$ (936)

Equity-Based Compensation - Assumptions for Fair Value of Stock Options Granted Estimated on the Date of Grant Using the Black-Scholes Option (Detail) - Stock Options [Member] - $ / shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per stock option	$ 2.77	$ 3.01
Volatility	54.00%	62.60%
Average risk-free interest rate	1.50%	2.50%
Expected term (years)	2 years 6 months	3 years 1 month 6 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value per stock option	$ 3.68	$ 3.77
Volatility	60.10%	63.70%
Average risk-free interest rate	2.50%	2.70%
Expected term (years)	3 years 6 months	3 years 3 months 18 days

Fair Value Measurements - Carrying Values and Fair Values of Other Financial Instruments (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 4,756	$ 7,592
Restricted cash	1,364	1,548
Debt issuance costs	129	195
Current portion of long-term debt	151	144
Long-term debt ̶ net of current portion	1,250	1,364
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	4,756	7,592
Restricted cash	1,364	1,548
Current portion of long-term debt	155	149
Long-term debt ̶ net of current portion	$ 1,267	$ 1,384

Cash, Cash Equivalents, and Restricted Cash

9 Months Ended

Sep. 30, 2019

Cash And Cash Equivalents [Abstract]

Cash, Cash Equivalents, and Restricted Cash

Note 8. Cash, Cash Equivalents, and Restricted Cash

	September 30,		December 31,
	2019		2018
Cash and cash equivalents	$	4,756	$	7,592
Restricted cash		1,364		1,548
Cash, cash equivalents, and restricted cash	$	6,120	$	9,140

Loss Per Share

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Loss Per Share

Note 4. Loss Per Share

The information used to compute basic and diluted net loss per common share was as follows for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Net loss	$	(4,844	)	$	(323	)	$	(13,129	)	$	(14,745	)
Weighted average shares outstanding (basic and diluted)		16,332,974			16,182,818			16,296,554			16,157,143
Net loss per common share:
Basic	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)
Diluted	$	(0.30	)	$	(0.02	)	$	(0.81	)	$	(0.91	)

Contingencies and Commitments

9 Months Ended

Sep. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

Contingencies and Commitments

Note 12. Contingencies and Commitments

Contingencies

Commitments

Product Warranty Reserves (Tables)

9 Months Ended

Sep. 30, 2019

Product Warranties Disclosures [Abstract]

Summary of Changes in Product Warranty Reserves

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Balance at beginning of period	$	1,223		$	909		$	1,670		$	1,300
Provisions for new issuances		182			445			711			831
Payments		(409	)		(236	)		(1,257	)		(564	)
Reserve adjustments		(65	)		(103	)		(188	)		(542	)
Foreign currency translation adjustments		(20	)		(11	)		(25	)		(21	)
Balance at end of period	$	911		$	1,004		$	911		$	1,004

Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Carrying Values and Fair Values of Other Financial Instruments

The carrying values and fair values of other financial instruments (assets and liabilities) not required to be recorded at fair value were as follows as of the dates indicated:

	September 30,				December 31,
	2019				2018
	Carrying Value		Fair Value		Carrying Value		Fair Value
Cash and cash equivalents	$	4,756	$	4,756	$	7,592	$	7,592
Restricted cash	$	1,364	$	1,364	$	1,548	$	1,548
Debt issuance costs^(a)	$	129	$	—	$	195	$	—
Current portion of long-term debt^(b)	$	151	$	155	$	144	$	149
Long-term debt ̶ net of current portion^(b)	$	1,250	$	1,267	$	1,364	$	1,384

(a)

(b)	Carrying values at September 30, 2019 and December 31, 2018 are net of unamortized debt issuance costs of $21 and $25, respectively.

Leases - Schedule of Future Minimum Lease Payments of Operating Leases Arrangements (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Leases [Abstract]
2019	$ 39
2020	107
2021	71
2022	58
2023	9
Thereafter	3
Total minimum lease payments	287
Less: Present value discount	(26)
Total operating lease liabilities	$ 261

Inventories - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Sep. 30, 2019	Dec. 31, 2018
Inventory [Line Items]
Allowance for slow-moving and obsolete inventories		$ 3,684	$ 4,143
Industrial Microwave [Member]
Inventory [Line Items]
Inventory (credit) charge	$ 561

Other Expense (Income) - Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income Expense Net [Line Items]
Realized gain associated with insurance recovery	$ 16	$ 819	$ 17	$ 819
3D Printing Machines [Member]
Other Income Expense Net [Line Items]
Realized gain associated with insurance recovery		$ 819		$ 819

Equity-Based Compensation - Summary of Equity-Based Compensation Expense (Parenthetical) (Detail) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Benefit for income taxes from equity-based compensation

^[1]

$ 0

[1]	The benefit for income taxes from equity-based compensation for each of the periods presented has been determined to be $0 based on valuation allowances against net deferred tax assets.

Fair Value Measurements - Additional Information (Detail) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Financial instruments (assets or liabilities) measured at fair value	$ 0	$ 0

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Accounts Payable [Member]
Related Party Transaction [Line Items]
Amounts due to related party	$ 0		$ 0		$ 1
Chairman of the Board of Directors [Member]
Related Party Transaction [Line Items]
Purchases from related parties	5	$ 4	63	$ 16
Fair market value of benefits received	$ 0	$ 5	3	$ 5
Chairman of the Board of Directors [Member] \| 3D Printing Machine and Ancillary Equipment [Member]
Related Party Transaction [Line Items]
Purchases from related parties			$ 30

Related Party Revolving Credit Facility

9 Months Ended

Sep. 30, 2019

Related Party Revolving Credit Facility

Note 13. Related Party Revolving Credit Facility

The Company incurred $265 in debt issuance costs associated with the LBM Credit Agreement (including the aforementioned up front commitment fee paid at closing to LBM).

During the three months and nine months ended September 30, 2018, the Company recorded interest expense relating to the LBM Credit Agreement of $51 and $110, respectively.

Inventories

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Inventories

Note 9. Inventories

Inventories consisted of the following as of the dates indicated:

	September 30,		December 31,
	2019		2018
Raw materials and components	$	8,734	$	7,747
Work in process		6,099		5,147
Finished goods		3,777		3,036
	$	18,610	$	15,930

Raw materials and components consist of consumable materials and component parts and subassemblies associated with 3D printing machine manufacturing and support activities. Work in process consists of 3D printing machines and other products in varying stages of completion. Finished goods consist of 3D printing machines and other products prepared for sale in accordance with customer specifications.

Revenue

9 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Revenue

Note 5. Revenue

The following table summarizes the Company’s revenue by product group for the periods indicated:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
3D printing machines	$	3,972	$	9,700	$	16,532	$	17,434
3D printed and other products, materials and services		6,912		6,889		19,210		21,905
	$	10,884	$	16,589	$	35,742	$	39,339

Revenue from 3D printing machines includes leasing revenue whereby the Company is the lessor of 3D printing machines to its customers. Leasing revenue is accounted for under ASU 2016-02 (Note 11).

The timing of revenue recognition, billings and cash collections results in billed receivables, unbilled receivables (contract assets) and deferred revenue and customer prepayments (contract liabilities) in the accompanying condensed consolidated balance sheet. The Company considers a number of factors in its evaluation of the creditworthiness of its customers, including past due amounts, past payment history, and current economic conditions. For 3D printing machines, the Company’s terms of sale vary by transaction. To reduce credit risk in connection with 3D printing machine sales, the Company may, depending upon the circumstances, require customers to furnish letters of credit or bank guarantees or to provide advanced payment (either partial or in full). For 3D printed and other products and materials, the Company’s terms of sale generally require payment within 30 to 60 days after delivery, although the Company also recognizes that longer payment periods are customary in certain countries where it transacts business. Service arrangements are generally billed in accordance with specific contract terms and are typically billed in advance or in proportion to performance of the related services. There were no other significant changes in contract liabilities during the three months or nine months ended September 30, 2019. Contract assets are not significant.

For the nine months ended September 30, 2019, the Company recognized revenue of $1,714 related to contract liabilities at January 1, 2019.

Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories consisted of the following as of the dates indicated:

	September 30,		December 31,
	2019		2018
Raw materials and components	$	8,734	$	7,747
Work in process		6,099		5,147
Finished goods		3,777		3,036
	$	18,610	$	15,930

Equity-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Equity-Based Compensation Expense

The following table summarizes the total equity-based compensation expense recognized by the Company for the periods indicated:

	Three Months Ended					Nine Months Ended
	September 30,					September 30,
	2019			2018		2019		2018
Equity-based compensation expense recognized:
Stock options	$	195		$	103	$	511	$	131
Restricted stock		171			108		545		314
Other^(a)		(371	)		71		20		211
Total equity-based compensation expense before income taxes		(5	)		282		1,076		656
Benefit for income taxes^(b)		—			—		—		—
Total equity-based compensation expense net of income taxes	$	(5	)	$	282	$	1,076	$	656


(a)	For the three months and nine months ended September 30, 2019, Other represents activity associated with the 2019 Program and other employee contractual amounts to be settled in equity. For the three months and nine months ended September 30, 2018, Other represents activity associated with the 2018 Program and other employee contractual amounts to be settled in equity.
(b)	The benefit for income taxes from equity-based compensation for each of the periods presented has been determined to be $0 based on valuation allowances against net deferred tax assets.

Assumptions for Fair Value of Stock Options Granted Estimated on the Date of Grant Using the Black-Scholes Option

The fair value of stock options granted was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions for the periods indicated:

	Nine Months Ended
	September 30,
	2019	2018
Weighted average fair value per stock option	$2.77 - $3.68	$3.01 - $3.77
Volatility	54.0% - 60.1%	62.6% - 63.7%
Average risk-free interest rate	1.5% - 2.5%	2.5% - 2.7%
Dividend yield	0.0%	0.0%
Expected term (years)	2.5 - 3.5	3.1 - 3.3

Summary of Activity for Stock Options

The activity for stock options was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019							2018
	Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value		Number of Options			Weighted Average Exercise Price		Weighted Average Grant Date Fair Value
Outstanding at beginning of period		621,986		$	10.66	$	5.52		674,470		$	11.58	$	6.41
Stock options granted		290,610		$	7.35	$	2.95		147,500		$	7.01	$	3.13
Stock options exercised		(40,432	)	$	7.17	$	3.03		(65,833	)	$	7.91	$	3.87
Stock options forfeited		(9,773	)	$	7.67	$	3.70		(133,835	)	$	9.44	$	5.15
Stock options expired		(34,332	)	$	16.87	$	10.30		(108,332	)	$	13.28	$	7.58
Outstanding at end of period		828,059		$	9.44	$	4.56		513,970		$	10.94	$	5.89
Stock options exercisable at end of period		403,479		$	11.30	$	6.02		360,132		$	12.41	$	6.90
Stock options expected to vest at end of period		424,580		$	7.68	$	3.18		153,838		$	7.49	$	3.52

Summary of Activity for Restricted Stock Awards

The activity for restricted stock was as follows for the periods indicated:

	Nine Months Ended September 30,
	2019					2018
	Shares of Restricted Stock			Weighted Average Grant Date Fair Value		Shares of Restricted Stock			Weighted Average Grant Date Fair Value
Outstanding at beginning of period		67,001		$	8.30		52,502		$	11.07
Restricted stock granted		66,763		$	8.98		57,000		$	7.39
Restricted stock vested		(62,251	)	$	8.65		(42,501	)	$	10.51
Restricted stock forfeited		(5,000	)	$	6.75		—		$	—
Outstanding at end of period		66,513		$	8.76		67,001		$	8.30
Restricted stock expected to vest at end of period		66,513		$	8.76		67,001		$	8.30

Basis of Presentation (Policies)	9 Months Ended
Basis of Presentation (Policies)	Sep. 30, 2019
Accounting Policies [Abstract]
Organization	Organization The ExOne Company (“ExOne”) is a corporation organized under the laws of the state of Delaware. ExOne was formed on January 1, 2013, when The Ex One Company, LLC, a Delaware limited liability company, merged with and into a Delaware corporation, which survived and changed its name to The ExOne Company (the “Reorganization”). As a result of the Reorganization, The Ex One Company, LLC became ExOne, the common and preferred interest holders of The Ex One Company, LLC became holders of common stock and preferred stock, respectively, of ExOne, and the subsidiaries of The Ex One Company, LLC became the subsidiaries of ExOne. The condensed consolidated financial statements include the accounts of ExOne, its wholly-owned subsidiaries, ExOne Americas LLC (United States); ExOne GmbH (Germany); ExOne Property GmbH (Germany); ExOne KK (Japan); and through December 2018, ExOne Italy S.r.l (Italy). Collectively, the consolidated group is referred to as the “Company”. The Company filed a registration statement on Form S-3 (No. 333-223690) with the Securities and Exchange Commission (“SEC”) on March 15, 2018. The purpose of the Form S-3 was to register, among other securities, debt securities. Subsidiaries of the Company are co-registrants with the Company (“Subsidiary Guarantors”), and the registration statement registered guarantees of debt securities by one or more of the Subsidiary Guarantors. The Subsidiary Guarantors are 100% owned by the Company and any guarantees by the Subsidiary Guarantors will be full and unconditional. There have been no transactions undertaken subject to the Form S-3 since its initial filing. Basis of Presentation The condensed consolidated financial statements of the Company are unaudited. The condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, considered necessary by management to fairly state the results of operations, financial position and cash flows of the Company. All material intercompany transactions and balances have been eliminated in consolidation. The results reported in these condensed consolidated financial statements are not necessarily indicative of the results that may be expected for the entire year. The December 31, 2018 condensed consolidated balance sheet data was derived from the audited financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”). This Quarterly Report on Form 10-Q should be read in connection with the Company’s Annual Report on Form 10-K for the year ended December 31, 2018, which includes all disclosures required by GAAP. The preparation of these condensed consolidated financial statements requires the Company to make certain judgments, estimates and assumptions regarding uncertainties that affect the reported amounts of assets, liabilities, revenue and expenses and related disclosure of contingent assets and liabilities. Areas that require significant judgments, estimates and assumptions include accounting for accounts receivable (including the allowance for doubtful accounts); inventories (including the allowance for slow-moving and obsolete inventories); product warranty reserves; contingencies; income taxes (including the valuation allowance on certain deferred tax assets and liabilities for uncertain tax positions); equity-based compensation (including the valuation of certain equity-based compensation awards issued by the Company); and testing for impairment of long-lived assets (including the identification of asset groups by management, estimates of future cash flows of identified asset groups and fair value estimates used in connection with assessing the valuation of identified asset groups). The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates. Certain amounts relating to contract liabilities – net of current portion ($527) in the accompanying condensed consolidated balance sheet at December 31, 2018, have been reclassified from other noncurrent liabilities to conform to current period presentation, following the adoption of Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) 2014-09 (further described below). Certain amounts relating to the lessor current portion of net investment in sales-type leases ($302) and lessor net investment in sales-type leases – net of current portion ($1,351) in the accompanying condensed consolidated balance sheet at December 31, 2018, have been reclassified from accounts receivable and other noncurrent assets, respectively, to conform to current period presentation following the adoption of FASB ASU 2016-02 (further described below). Related to the reclassifications further described above, amounts within the condensed statement of consolidated cash flows for the nine months ended September 30, 2018 associated with these changes have also been reclassified to conform to current period presentation.
Recently Adopted and Issued Accounting Guidance	Recently Adopted Accounting Guidance On January 1, 2019, the Company adopted FASB ASU 2014-09, “Revenue from Contracts with Customers.” This ASU created a comprehensive framework for all entities in all industries to apply in the determination of when to recognize revenue and, therefore, supersedes virtually all existing revenue recognition requirements and guidance. This framework is expected to provide a consistent and comparable methodology for revenue recognition. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: identify the contract(s) with a customer, identify the performance obligations in the contract(s), determine the transaction price, allocate the transaction price to the performance obligations in the contract(s), and recognize revenue when, or as, the entity satisfies a performance obligation. The Company adopted this guidance using the modified retrospective approach. Revenue from the Company’s sale of three-dimensional (“3D”) printing machines and 3D printed and other products, materials and services continues to generally be recognized when the related machines, products or materials are delivered or accepted by the Company’s customers or as the related services are performed by the Company. As such, the adoption of this guidance did not have a material impact on the Company’s financial position or results of operations. The Company has included the enhanced disclosures required by this guidance in its condensed consolidated financial statements (Note 5). On January 1, 2019, the Company adopted FASB ASU 2016-02, “Leases.” This ASU requires lessees to recognize a right-of-use asset and lease liability on the consolidated balance sheet for leases classified as operating leases. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize a right-of-use asset and lease liability. Additionally, when measuring assets and liabilities arising from a lease, optional payments should be included only if the lessee is reasonably certain to exercise an option to extend the lease, exercise a purchase option, or not exercise an option to terminate the lease. A right-of-use asset represents an entity’s right to use the underlying asset for the lease term, and a lease liability represents an entity’s obligation to make lease payments. Previously, an asset and liability only were recorded for leases classified as capital leases (financing leases). The measurement, recognition, and presentation of expenses and cash flows arising from leases by a lessee remains the same. In connection with the adoption of this guidance, the Company has completed an assessment resulting in an accumulation of all of its leasing arrangements and has validated the information for accuracy and completeness. Upon adoption of the new lease guidance, management recorded a right-of-use asset and lease liability, each in the amount of approximately $400, on the Company’s consolidated balance sheet for various types of operating leases, including certain machinery and other equipment and vehicles. This amount is equivalent to the aggregate future minimum lease payments on a discounted basis. The Company has also elected to apply the package of transitional practical expedients of the new lease guidance by allowing the Company to not: (1) reassess if expired or existing contracts are, or contain, leases; (2) reassess lease classification for any expired or existing leases; and (3) reassess initial direct costs for any existing leases. Additionally, in July 2018, the FASB issued guidance to provide for an alternative transition method to the new lease guidance, whereby an entity can choose to not reflect the impact of the new lease guidance in the prior periods included in its consolidated financial statements. The Company has utilized this alternative transition method in connection with its adoption on January 1, 2019. The Company has included the enhanced disclosures required by this guidance in its condensed consolidated financial statements (Note 11). On January 1, 2019, the Company adopted FASB ASU 2016-15, “Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments.” This ASU is intended to reduce diversity in practice in how certain cash receipts and payments are presented and classified in the statement of consolidated cash flows. The standard provides guidance in a number of situations including, among others, settlement of zero-coupon bonds, contingent consideration payments made after a business combination, proceeds from the settlement of insurance claims, and distributions received from equity method investees. The ASU also provides guidance for classifying cash receipts and payments that have aspects of more than one class of cash flows. The adoption of this ASU did not have an effect on the consolidated financial statements of the Company. Recently Issued Accounting Guidance The Company considers the applicability and impact of all ASUs issued by the FASB. Recently issued ASUs not listed below either were assessed and determined to be not applicable or are currently expected to have no impact on the consolidated financial statements of the Company. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses.” This ASU added a new impairment model (known as the current expected credit loss (“CECL”) model) that is based on expected losses rather than incurred losses. Under this ASU, an entity recognizes as an allowance its estimate of expected credit losses. The CECL model applies to most debt instruments, trade receivables, lease receivables, financial guarantee contracts, and other loan commitments. The CECL model does not have a minimum threshold for recognition of impairment losses and entities will need to measure expected credit losses on assets that have a low risk of loss. These changes become effective for the Company on January 1, 2020. Management is currently evaluating the potential impact of these changes on the consolidated financial statements of the Company.
Loss Per Share	The Company presents basic and diluted loss per common share amounts. Basic loss per common share is calculated by dividing net loss available to common stockholders by the weighted average number of common shares outstanding during the applicable period. Diluted loss per common share is calculated by dividing net loss available to common stockholders by the weighted average number of common shares and common equivalent shares outstanding during the applicable period.
Revenue	The Company derives revenue from the sale of 3D printing machines and 3D printed and other products, materials and services. Revenue is recognized when the Company satisfies its performance obligation(s) under a contract (either implicit or explicit) by transferring the promised product or service to a customer either when (or as) the customer obtains control of the product or service. A performance obligation is a promise in a contract to transfer a distinct product or service to a customer. A contract’s transaction price is allocated to each distinct performance obligation. Revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products or providing services. As such, revenue is recorded net of returns, allowances, customer discounts, and incentives. Sales, value add, and other taxes collected from customers and remitted to governmental authorities are accounted for on a net (excluded from revenue) basis. Shipping and handling costs are included in cost of sales. Certain of the Company’s contracts with customers provide for multiple performance obligations. Sales of 3D printing machines may also include optional equipment, materials, replacement components and services (installation, training and other services, including maintenance services and/or an extended warranty). Certain other contracts have a single performance obligation, as the promise to transfer products or services is not separately identifiable from other promises in the contract and, therefore, not distinct. For contracts with multiple performance obligations, the Company allocates the contract’s transaction price to each performance obligation using the Company’s best estimate of stand-alone selling price for each distinct product or service in the contract, which is generally based on an observable price.

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2019	Nov. 07, 2019
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Trading Symbol	XONE
Entity Registrant Name	ExOne Co
Entity Central Index Key	0001561627
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		16,413,473
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Shell Company	false
Title of 12(b) Security	Common stock
Security Exchange Name	NASDAQ
Entity File Number	001-35806
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-1684608
Entity Address, Address Line One	127 Industry Boulevard
Entity Address, City or Town	North Huntingdon
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15642
City Area Code	724
Local Phone Number	863-9663

Condensed Statement of Consolidated Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net loss	$ (13,129)	$ (14,745)
Adjustments to reconcile net loss to net cash used for operations:
Depreciation and amortization	3,491	4,039
Equity-based compensation	1,076	656
Amortization of debt issuance costs	70	52
Provision (recoveries) for bad debts ̶ net	264	(40)
Provision for slow-moving, obsolete and lower of cost or net realizable value inventories ̶ net	37	910
Gain from disposal of property and equipment ̶ net	(2)	(33)
Changes in assets and liabilities, excluding effects of foreign currency translation adjustments:
Decrease in accounts receivable	2,790	3,014
Decrease in net investment in sales-type leases	218	152
Increase in inventories	(4,373)	(7,458)
Increase in prepaid expenses and other assets	(827)	(761)
Increase (decrease) in accounts payable	1,822	(637)
Decrease in accrued expenses and other liabilities	(1,934)	(206)
Increase in contract liabilities	6,301	6,168
Net cash used for operating activities	(4,196)	(8,889)
Investing activities
Capital expenditures	(613)	(1,192)
Proceeds from sale of property and equipment	3	77
Net cash used for investing activities	(610)	(1,115)
Financing activities
Proceeds from related party revolving credit facility	2,000
Proceeds from exercise of employee stock options	289	521
Payments on long-term debt	(111)	(106)
Taxes related to the net share settlement of equity-based awards	(68)	0
Debt issuance costs		(265)
Other	(10)	(13)
Net cash provided by financing activities	2,100	137
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(314)	(294)
Net change in cash, cash equivalents, and restricted cash	(3,020)	(10,161)
Cash, cash equivalents, and restricted cash at beginning of period	9,140	22,178
Cash, cash equivalents, and restricted cash at end of period	6,120	12,017
Supplemental disclosure of noncash investing and financing activities
Transfer of internally developed 3D printing machines from inventories to property and equipment for internal use or leasing activities	1,635	1,521
Transfer of internally developed 3D printing machines from property and equipment to inventories for sale	485	847
Property and equipment reclassified as assets held for sale		822
Property and equipment included in accounts payable	$ 48	48
Property and equipment included in accrued expenses and other current liabilities		4
Property and equipment acquired through financing arrangements		$ 14

Concentration of Credit Risk

9 Months Ended

Sep. 30, 2019

Risks And Uncertainties [Abstract]

Concentration of Credit Risk

Note 17. Concentration of Credit Risk

Accumulated Other Comprehensive Loss

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Accumulated Other Comprehensive Loss

Note 3. Accumulated Other Comprehensive Loss

The following table summarizes changes in the components of accumulated other comprehensive loss for the periods indicated:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Foreign currency translation adjustments
Balance at beginning of period	$	(10,941	)	$	(10,322	)	$	(10,748	)	$	(9,484	)
Other comprehensive loss		(1,387	)		(429	)		(1,580	)		(1,267	)
Balance at end of period	$	(12,328	)	$	(10,751	)	$	(12,328	)	$	(10,751	)

There were no tax impacts related to income tax rate changes and no amounts were reclassified to earnings for either of the periods presented.

Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Accumulated other comprehensive loss, tax	$ 0	$ 0	$ 0	$ 0
Amounts reclassified to earnings from accumulated other comprehensive loss	$ 0	$ 0	$ 0	$ 0

Revenue - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Revenue, description of payment terms			the Company’s terms of sale generally require payment within 30 to 60 days after delivery, although the Company also recognizes that longer payment periods are customary in certain countries where it transacts business.
Revenue recognized related to contract liabilities			$ 1,714
Revenue, remaining performance obligation	$ 25,800		25,800
Allowance for doubtful accounts	481		481		$ 225
Provision (recoveries) for bad debts ̶ net	$ 414	$ (3)	$ 264	$ (40)
Maximum [Member]
Disaggregation Of Revenue [Line Items]
Term till payment is required from date of shipment			60 days
Minimum [Member]
Disaggregation Of Revenue [Line Items]
Term till payment is required from date of shipment			30 days

Equity-Based Compensation - Summary of Equity-Based Compensation Expense (Detail) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Equity-based compensation expense recognized:

Total equity-based compensation expense before income taxes

$ (5)

$ 282

$ 1,076

$ 656

Benefit for income taxes

^[1]

Total equity-based compensation expense net of income taxes

(5)

282

1,076

656

Stock Options [Member]

Equity-based compensation expense recognized:

Total equity-based compensation expense before income taxes

195

103

511

131

Restricted Stock [Member]

Equity-based compensation expense recognized:

Total equity-based compensation expense before income taxes

171

108

545

314

Other [Member]

Equity-based compensation expense recognized:

Total equity-based compensation expense before income taxes

^[2]

$ (371)

$ 71

$ 20

$ 211

[1]	The benefit for income taxes from equity-based compensation for each of the periods presented has been determined to be $0 based on valuation allowances against net deferred tax assets.
[2]	For the three months and nine months ended September 30, 2019, Other represents activity associated with the 2019 Program and other employee contractual amounts to be settled in equity. For the three months and nine months ended September 30, 2018, Other represents activity associated with the 2018 Program and other employee contractual amounts to be settled in equity.

Related Party Revolving Credit Facility - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 12, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Amortization of debt issuance costs					$ 70,000	$ 52,000
Accounts payable			$ 6,035,000		6,035,000			$ 4,376,000
Revolving Credit Facility [Member] \| Prepaid Expenses and Other Current Assets [Member]
Related Party Transaction [Line Items]
Debt issuance costs, net			88,000		88,000			88,000
Revolving Credit Facility [Member] \| Other Noncurrent Assets [Member]
Related Party Transaction [Line Items]
Debt issuance costs, net			$ 41,000		$ 41,000			$ 107,000
Revolving Credit Facility [Member] \| LBM Holdings, LLC [Member]
Related Party Transaction [Line Items]
Line of credit facility, maximum borrowing capacity	$ 15,000,000	$ 15,000,000
Credit facility, expiration period	3 years	3 years
Credit facility, expiration date	Mar. 12, 2021
Credit facility, description of variable rate basis					one-month LIBOR
Credit facility, interest rate			7.00%		7.00%			7.50%
Credit facility, commitment fee on unused portion, percentage	0.75%
Credit facility, commitment fee on unused portion, payable term					The LBM Credit Agreement requires a commitment fee of 75 basis points, or 0.75%, on the unused portion of the facility, payable monthly in arrears.
Credit facility, up-front commitment fee percentage	1.25%
Credit facility, up-front commitment fee amount	$ 188,000
Credit facility, minimum increments	1,000,000
Available loan proceeds deposited into escrow account	$ 15,000,000
Credit facility, outstanding amount			$ 2,000,000		$ 2,000,000		$ 0
Debt issuance costs			265,000		265,000
Interest expense relating to the Credit Agreement			65,000	$ 51,000	165,000	$ 110,000
Amortization of debt issuance costs			22,000		66,000
Debt issuance costs, net			129,000		129,000			$ 195,000
Interest expense relating to the commitment fee			43,000		99,000
Accounts payable			20,000		20,000			10,000
Revolving Credit Facility [Member] \| LBM Holdings, LLC [Member] \| Prepaid Expenses and Other Current Assets [Member]
Related Party Transaction [Line Items]
Debt issuance costs, net			88,000		88,000			88,000
Revolving Credit Facility [Member] \| LBM Holdings, LLC [Member] \| Other Noncurrent Assets [Member]
Related Party Transaction [Line Items]
Debt issuance costs, net			$ 41,000		$ 41,000			$ 107,000
Revolving Credit Facility [Member] \| LBM Holdings, LLC [Member] \| One Month LIBOR [Member]
Related Party Transaction [Line Items]
Credit facility, basis spread on variable rate	5.00%

Leases - Schedule of Net Investment in Sales-type Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Leases [Abstract]
Future minimum lease payments receivable	$ 1,650
Less: Allowance for doubtful accounts	(412)
Net future minimum lease payments receivable	1,238
Less: Unearned interest income	(236)
Net investment in sales-type leases	$ 1,002
Future minimum lease payments receivable		$ 1,969
Net future minimum lease payments receivable		1,969
Less: Unearned interest income		(316)
Net investment in sales-type leases		$ 1,653