prlb20190630

Date: May 5, 2020

/s/ Victoria M. Holt

Victoria M. Holt

President and Chief Executive Officer

(Principal Executive Officer)

prlb20190630_10q.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☑	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended March 31, 2020

☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from to

Commission File Number: 001-35435

Proto Labs, Inc.

(Exact name of registrant as specified in its charter)

Minnesota	41-1939628
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

5540 Pioneer Creek Drive
Maple Plain, Minnesota	55359
(Address of principal executive offices)	(Zip Code)

(763) 479-3680

(Registrant’s telephone number, including area code)

Not Applicable

(Former name, former address and former fiscal year, if changed since last report)

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, Par Value $0.001 Per Share	PRLB	New York Stock Exchange

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 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, 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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: 26,612,751 shares of Common Stock, par value $0.001 per share, were outstanding at April 30, 2020.

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Proto Labs, Inc.

TABLE OF CONTENTS

Item	Description	Page

PART I
1.	Financial Statements	2
2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	16
3.	Quantitative and Qualitative Disclosures about Market Risk	24
4.	Controls and Procedures	25
PART II
1.	Legal Proceedings	26
1A.	Risk Factors	26
2.	Unregistered Sales of Equity Securities and Use of Proceeds	26
3.	Defaults Upon Senior Securities	26
4.	Mine Safety Disclosures	26
5.	Other Information	26
6.	Exhibits	27

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

Proto Labs, Inc.

Consolidated Balance Sheets

(In thousands, except share and per share amounts)

	*March 31,*			*December 31,*
	*2020*			*2019*
	(Unaudited)
Assets
Current assets
Cash and cash equivalents	$	91,905		$	125,225
Short-term marketable securities		38,194			35,437
Accounts receivable, net of allowance for doubtful accounts of $1,821 and $952 as of March 31, 2020 and December 31, 2019, respectively		62,091			57,450
Inventory		10,507			10,075
Prepaid expenses and other current assets		9,777			8,232
Total current assets		212,474			236,419
Property and equipment, net		268,001			263,712
Goodwill		128,752			128,752
Other intangible assets, net		16,615			17,369
Long-term marketable securities		37,077			12,960
Operating lease assets		10,548			11,425
Other long-term assets		4,623			3,030
Total assets	$	678,090		$	673,667

Liabilities and shareholders' equity
Current liabilities
Accounts payable	$	18,219		$	16,804
Accrued compensation		12,460			15,058
Accrued liabilities and other		12,950			11,057
Current operating lease liabilities		3,254			3,340
Income taxes payable		414			1,322
Total current liabilities		47,297			47,581
Long-term operating lease liabilities		7,871			8,565
Long-term deferred tax liabilities		29,652			26,283
Other long-term liabilities		5,530			5,448
Total liabilities		90,350			87,877

Shareholders' equity
Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and outstanding 0 shares as of each of March 31, 2020 and December 31, 2019		-			-
Common stock, $0.001 par value, authorized 150,000,000 shares; issued and outstanding 26,648,524 and 26,786,459 shares as of March 31, 2020 and December 31, 2019, respectively		27			27
Additional paid-in capital		268,574			268,059
Retained earnings		329,137			324,722
Accumulated other comprehensive loss		(9,998	)		(7,018	)
Total shareholders' equity		587,740			585,790
Total liabilities and shareholders' equity	$	678,090		$	673,667

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

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Proto Labs, Inc.

Consolidated Statements of Comprehensive Income

(In thousands, except share and per share amounts)

(Unaudited)

	*Three Months Ended*
	*March 31,*
	*2020*		*2019*

Statements of Operations:
Revenue	$	115,108	$	113,452
Cost of revenue		57,008		54,592
Gross profit		58,100		58,860
Operating expenses
Marketing and sales		18,180		18,577
Research and development		8,987		8,013
General and administrative		14,108		12,822
Total operating expenses		41,275		39,412
Income from operations		16,825		19,448
Other income, net		1,054		213
Income before income taxes		17,879		19,661
Provision for income taxes		3,895		4,150
Net income	$	13,984	$	15,511

Net income per share:
Basic	$	0.52	$	0.58
Diluted	$	0.52	$	0.57

Shares used to compute net income per share:
Basic		26,776,806		26,963,366
Diluted		26,929,640		27,177,039

Comprehensive Income (net of tax)
Comprehensive income	$	11,004	$	15,987

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

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Proto Labs, Inc.

Consolidated Statements of Shareholders' Equity

(In thousands, except share amounts)

	*Common Stock*					*Additional*						*Accumulated Other*
						*Paid-In*			*Retained*			*Comprehensive*
	*Shares*			*Amount*		*Capital*			*Earnings*			*Loss*			*Total*

Balance at January 1, 2020		26,786,459			27		268,059			324,722			(7,018	)		585,790
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		23,525			-		(902	)		-			-			(902	)
Stock-based compensation expense		-			-		3,033			-			-			3,033
Repurchases of common stock		(161,460	)		-		(1,616	)		(9,569	)		-			(11,185	)
Net income		-			-		-			13,984			-			13,984
Other comprehensive income
Foreign currency translation adjustment		-			-		-			-			(2,980	)		(2,980	)
Comprehensive income																11,004
Balance at March 31, 2020		26,648,524		$	27	$	268,574		$	329,137		$	(9,998	)	$	587,740

	*Common Stock*					*Additional*						*Accumulated Other*
						*Paid-In*			*Retained*			*Comprehensive*
	*Shares*			*Amount*		*Capital*			*Earnings*			*Loss*			*Total*

Balance at January 1, 2019		26,984,747			27		258,502			291,460			(8,492	)		541,497
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		19,950			-		(420	)		-			-			(420	)
Stock-based compensation expense		-			-		3,040			-			-			3,040
Repurchases of common stock		(157,716	)		-		(1,511	)		(15,798	)		-			(17,309	)
Net income		-			-		-			15,511			-			15,511
Other comprehensive income
Foreign currency translation adjustment		-			-		-			-			476			476
Comprehensive income																15,987
Balance at March 31, 2019		26,846,981		$	27	$	259,611		$	291,173		$	(8,016	)	$	542,795

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

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Proto Labs, Inc.

Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

	*Three Months Ended*
	*March 31,*
	*2020*			*2019*

Operating activities
Net income	$	13,984		$	15,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		7,958			7,439
Stock-based compensation expense		3,033			3,040
Deferred taxes		3,392			379
Amortization of held-to-maturity securities		55			16
Other		(644	)		236
Changes in operating assets and liabilities:
Accounts receivable		(5,084	)		(2,386	)
Inventories		(537	)		739
Prepaid expenses and other		(1,240	)		(211	)
Income taxes		(841	)		3,006
Accounts payable		1,739			(805	)
Accrued liabilities and other		595			(8,962	)
Net cash provided by operating activities		22,410			18,002

Investing activities
Purchases of property, equipment and other capital assets		(13,421	)		(12,735	)
Purchases of other assets and investments		(3,000	)		(4,000	)
Purchases of marketable securities		(37,629	)		-
Proceeds from maturities of marketable securities		10,700			17,006
Net cash (used in) provided by investing activities		(43,350	)		271

Financing activities
Proceeds from exercises of stock options		135			174
Purchases of shares withheld for tax obligations		(1,048	)		(594	)
Repurchases of common stock		(11,185	)		(17,309	)
Net cash used in financing activities		(12,098	)		(17,729	)
Effect of exchange rate changes on cash and cash equivalents		(282	)		(240	)
Net (decrease) increase in cash and cash equivalents		(33,320	)		304
Cash and cash equivalents, beginning of period		125,225			85,046
Cash and cash equivalents, end of period	$	91,905		$	85,350

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

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Note 1 – Basis of Presentation

The unaudited interim Consolidated Financial Statements of Proto Labs, Inc. (Protolabs, the Company, we, us or our) have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. In the opinion of management, the accompanying financial statements reflect all adjustments necessary for a fair presentation of the Company’s statements of financial position, results of operations and cash flows for the periods presented. Except as otherwise disclosed herein, these adjustments consist of normal, recurring items. Operating results for interim periods are not necessarily indicative of results that may be expected for the fiscal year as a whole.

The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses, and the related disclosures at the date of the financial statements and during the reporting period. Actual results could materially differ from these estimates. For further information, refer to the audited Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 as filed with the Securities and Exchange Commission (SEC) on February 26, 2020.

The accompanying Consolidated Balance Sheet as of December 31, 2019 was derived from the audited Consolidated Financial Statements but does not include all disclosures required by U.S. GAAP for a full set of financial statements. This Form 10-Q should be read in conjunction with the Company’s Consolidated Financial Statements and Notes included in the Annual Report on Form 10-K filed on February 26, 2020 as referenced above.

Note 2 – Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

During the fourth quarter of 2019, the Company early adopted the FASB ASU 2017-04, Intangibles – Goodwill and Other, which is intended to simplify the subsequent measurement of goodwill. The adoption of this guidance had no material impact on our consolidated financial statements.

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Note 3 – Net Income per Common Share

Basic net income per share is computed based on the weighted-average number of common shares outstanding. Diluted net income per share is computed based on the weighted-average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options, restricted stock units and restricted stock awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan. Performance stock units are excluded from the calculation of dilutive potential common shares until the performance conditions have been satisfied.

The table below sets forth the computation of basic and diluted net income per share:

	*Three Months Ended*
	*March 31,*
(in thousands, except share and per share amounts)	*2020*		*2019*
Net income	$	13,984	$	15,511

Basic - weighted-average shares outstanding:		26,776,806		26,963,366
Effect of dilutive securities:
Employee stock options and other		152,834		213,673
Diluted - weighted-average shares outstanding:		26,929,640		27,177,039
Net income per share:
Basic	$	0.52	$	0.58
Diluted	$	0.52	$	0.57

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Note 4 – Goodwill and Other Intangible Assets

There were no changes in the carrying amount of Goodwill during the three months ended March 31, 2020.

Intangible assets other than goodwill at March 31, 2020 and December 31, 2019 were as follows:

	*March 31, 2020*							*December 31, 2019*							*Useful*	*Weighted Average*
(in thousands)	*Gross*		*Accumulated Amortization*			*Net*		*Gross*		*Accumulated Amortization*			*Net*		*Life (in years)*	*Useful Life Remaining (in years)*
Intangible assets with finite lives:
Marketing assets	$	930	$	(550	)	$	380	$	930	$	(527	)	$	403	10.0	4.0
Non-compete agreement		270		(226	)		44		270		(222	)		48	2.0 - 5.0	2.8
Software technology		13,229		(2,618	)		10,611		13,229		(2,275	)		10,954	10.0	7.8
Customer relationships		10,070		(4,490	)		5,580		10,070		(4,106	)		5,964	6.0 - 9.0	3.6
Total intangible assets	$	24,499	$	(7,884	)	$	16,615	$	24,499	$	(7,130	)	$	17,369

Amortization expense for intangible assets was $0.8 million and $0.9 million for the three months ended March 31, 2020 and 2019, respectively.

Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets is as follows:

(in thousands)	*Estimated Amortization Expense*
Remaining 2020	$	2,262
2021		3,016
2022		3,016
2023		2,813
2024		1,400
Thereafter		4,108
Total estimated amortization expense	$	16,615

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Note 5 – Fair Value Measurements

Accounting Standards Codification (ASC 820), Fair Value Measurement (ASC 820), defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. ASC 820 also establishes a fair value hierarchy that requires classification based on observable and unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value:

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The Company’s cash consists of bank deposits. The Company’s cash equivalents measured at fair value consist of money market mutual funds. The Company determines the fair value of these investments using Level 1 inputs.

The following table summarizes financial assets as of March 31, 2020 and December 31, 2019 measured at fair value on a recurring basis:

	*March 31, 2020*						*December 31, 2019*
(in thousands)	*Level 1*		*Level 2*		*Level 3*		*Level 1*		*Level 2*		*Level 3*
Financial Assets:
Cash and cash equivalents
Money market mutual fund	$	31,291	$	-	$	-	$	68,962	$	-	$	-
Total	$	31,291	$	-	$	-	$	68,962	$	-	$	-

Note 6 – Marketable Securities

The Company invests in short-term and long-term agency, municipal, corporate and other debt securities. The securities are categorized as held-to-maturity and are recorded at amortized cost, net of an allowance for credit losses. Categorization as held-to-maturity is based on the Company’s ability and intent to hold these securities to maturity. The following table summarizes information regarding the Company’s short-term and long-term marketable securities as of March 31, 2020 and December 31, 2019:

	*March 31, 2020*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	12,704	$	19		(14	)	$	12,709
Corporate debt securities		35,100		45		(239	)		34,906
U.S. government agency securities		20,801		61		-			20,862
Certificates of deposit/time deposits		3,697		31		(2	)		3,726
Commercial paper		2,969		11		-			2,980
Total marketable securities	$	75,271	$	167	$	(255	)	$	75,183

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	*December 31, 2019*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	10,204	$	9	$	(3	)	$	10,210
Corporate debt securities		26,944		80		(12	)		27,012
U.S. government agency securities		6,274		1		(7	)		6,268
Certificates of deposit/time deposits		1,484		22		-			1,506
Commercial paper		3,491		-		-			3,491
Total marketable securities	$	48,397	$	112	$	(22	)	$	48,487

Fair values for the corporate debt securities are primarily determined based on quoted market prices (Level 1). Fair values for the U.S. municipal securities, U.S. government agency securities, certificates of deposit and U.S. treasury securities are primarily determined using dealer quotes or quoted market prices for similar securities (Level 2).

During the first quarter of 2020, the Company adopted the FASB ASU 2016-13, Financial Instruments – Credit Losses. The Company calculated the expected credit loss for each security in its portfolio using the probability-of-default method. The Company concluded the adoption of the guidance had no material impact on its consolidated financial statements.

Classification of marketable securities as current or non-current is based upon the security’s maturity date as of the date of these financial statements.

The March 31, 2020 balance of held-to-maturity debt securities by contractual maturity is shown in the following table at amortized cost, net of an allowance for credit losses. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

	*March 31,*
(in thousands)	*2020*
Due in one year or less	$	38,194
Due after one year through five years		37,077
Total marketable securities	$	75,271

Note 7 – Inventory

Inventory consists primarily of raw materials, which are recorded at the lower of cost or market using the average-cost method, which approximates first-in, first-out (FIFO) cost. The Company periodically reviews its inventory for slow-moving, damaged and discontinued items and provides allowances to reduce such items identified to their recoverable amounts.

The Company’s inventory consisted of the following as of the dates indicated:

	*March 31,*			*December 31,*
(in thousands)	*2020*			*2019*
Raw materials	$	10,237		$	9,818
Work in process		499			501
Total inventory		10,736			10,319
Allowance for obsolescence		(229	)		(244	)
Inventory, net of allowance	$	10,507		$	10,075

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Note 8 – Stock-Based Compensation

Under the Company’s 2012 Long-Term Incentive Plan, as amended (the 2012 Plan), the Company has the ability to grant stock options, stock appreciation rights (SARs), restricted stock, restricted stock units, other stock-based awards and cash incentive awards. Awards under the 2012 Plan have a maximum term of ten years from the date of grant. The compensation committee may provide that the vesting or payment of any award will be subject to the attainment of specified performance measures in addition to the satisfaction of any continued service requirements and the compensation committee will determine whether such measures have been achieved. The per-share exercise price of stock options and SARs granted under the 2012 Plan generally may not be less than the fair market value of a share of our common stock on the date of the grant.

Employee Stock Purchase Plan

The Company’s 2012 Employee Stock Purchase Plan (ESPP) allows eligible employees to purchase a variable number of shares of the Company’s common stock each offering period at a discount through payroll deductions of up to 15 percent of their eligible compensation, subject to plan limitations. The ESPP provides for six-month offering periods with a single purchase period ending May 15 and November 15, respectively. At the end of each offering period, employees are able to purchase shares at 85 percent of the lower of the fair market value of the Company’s common stock on the first trading day of the offering period or on the last trading day of the offering period.

Stock-Based Compensation Expense

Stock-based compensation expense was $3.0 million for each of the three months ended March 31, 2020 and 2019, respectively.

Stock Options

The following table summarizes stock option activity during the three months ended March 31, 2020:

				*Weighted-*
				*Average*
	*Stock Options*			*Exercise Price*
Options outstanding at December 31, 2019		276,266		$	72.38
Granted		33,192			96.72
Exercised		(2,001	)		67.53
Forfeited		(848	)		110.38
Options outstanding at March 31, 2020		306,609		$	74.94

Exercisable at March 31, 2020		187,326		$	62.48

The outstanding options generally have a term of ten years. For employees, options granted become exercisable ratably over the vesting period, which is generally a period from four to five years, beginning on the first anniversary of the grant date, subject to the employee’s continuing service to the Company. For directors, options generally become exercisable in full on the first anniversary of the grant date.

The weighted-average grant date fair value of options that were granted during the three months ended March 31, 2020 was $41.72.

The following table provides the assumptions used in the Black-Scholes pricing model valuation of options during the three months ended March 31, 2020 and 2019:

	*Three Months Ended March 31,*
	*2020*	*2019*
Risk-free interest rate	1.47%	2.58%
Expected life (years)	6.25	6.25
Expected volatility	42.40%	42.74%
Expected dividend yield	0%	0%

As of March 31, 2020, there was $4.5 million of unrecognized compensation expense related to unvested stock options, which is expected to be recognized over a weighted-average period of 2.9 years.

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Restricted Stock

Restricted stock awards are share-settled awards and restrictions lapse ratably over the vesting period, which is generally a period from four to five years, beginning on the first anniversary of the grant date, subject to the employee's continuing service to the Company. For directors, restrictions generally lapse in full on the first anniversary of the grant date.

The following table summarizes restricted stock activity during the three months ended March 31, 2020:

				*Weighted-*
				*Average*
				*Grant Date*
	*Restricted*			*Fair Value*
	*Stock*			*Per Share*
Restricted stock at December 31, 2019		314,973		$	89.55
Granted		28,105			96.72
Restrictions lapsed		(25,598	)		79.27
Forfeited		(7,616	)		90.47
Restricted stock at March 31, 2020		309,864		$	91.03

As of March 31, 2020, there was $21.0 million of unrecognized compensation expense related to non-vested restricted stock, which is expected to be recognized over a weighted-average period of 2.6 years.

Performance Stock

Performance stock units (PSUs) are expressed in terms of a target number of PSUs, with anywhere between 0 percent and 150 percent of that target number capable of being earned and vesting at the end of a three-year performance period depending on the Company’s performance in the final year of the performance period and the award recipient’s continued employment. The Company’s PSUs granted from 2017 to 2019 are based on performance conditions and the related compensation cost is based on the probability that the performance conditions will be achieved. The Company’s PSUs granted in 2020 are based on market conditions and the related compensation cost is based on the fair value at grant date calculated using a Monte Carlo pricing model.

The following table summarizes performance stock activity during the three months ended March 31, 2020:

				*Weighted-*
				*Average*
				*Grant Date*
	*Performance*			*Fair Value*
	*Stock*			*Per Share*
Performance stock at December 31, 2019		9,383		$	58.35
Granted		19,956			118.66
Restrictions lapsed		(7,113	)		58.35
Performance change		-			-
Forfeited		(2,270	)		58.35
Performance stock at March 31, 2020		19,956		$	118.66

The following table provides the assumptions used in the Monte Carlo pricing model valuation of PSUs during the three months ended March 31, 2020:

		Three Months Ended March 31,
		2020
Risk-free interest rate		1.41%
Expected life (years)		2.88
Expected volatility		38.70%
Expected dividend yield		0%

As of March 31, 2020, there was $2.3 million of unrecognized compensation expense related to non-vested performance stock, which is expected to be recognized over a weighted-average period of 2.9 years.

Employee Stock Purchase Plan

The following table presents the assumptions used to estimate the fair value of the ESPP during the three months ended March 31, 2020 and 2019:

	*Three Months Ended March 31,*
	*2020*	*2019*
Risk-free interest rate	1.59%	2.33%
Expected life (months)	6.00	6.00
Expected volatility	42.63%	37.36%
Expected dividend yield	0%	0%

Note 9 – Accumulated Other Comprehensive Loss

Other comprehensive income (loss) is comprised entirely of foreign currency translation adjustments. The following table presents the changes in accumulated other comprehensive income (loss) balances during the three months ended March 31, 2020 and 2019:

	*Three Months Ended*
	*March 31,*
(in thousands)	*2020*			*2019*
Foreign currency translation adjustments
Balance at beginning of period	$	(7,018	)	$	(8,492	)
Other comprehensive income (loss) before reclassifications		(2,980	)		476
Amounts reclassified from accumulated other comprehensive loss		-			-
Net current-period other comprehensive income (loss)		(2,980	)		476
Balance at end of period	$	(9,998	)	$	(8,016	)

Note 10 – Income Taxes

The Company is subject to income tax in multiple jurisdictions and the use of estimates is required to determine the provision for income taxes. For the three months ended March 31, 2020 and 2019, the Company recorded an income tax provision of $3.9 million and $4.2 million, respectively. The income tax provision is based on the estimated annual effective tax rate for the year applied to pre-tax income. The effective income tax rate for the three months ended March 31, 2020 was 21.8 percent compared to 21.1 percent in the same period of the prior year. The effective tax rate increased by 0.7 percent for the three months ended March 31, 2020 when compared to the same period in 2019 primarily due to a decrease in tax benefits from the vesting of restricted stock and the exercise of stock options and an increase in the state tax provision.

The effective income tax rate for the three months ended March 31, 2020 differs from the U.S. federal statutory rate of 21.0 percent due to various factors, including operating in multiple state and foreign jurisdictions and tax credits for which the Company qualifies.

The Company had unrecognized tax benefits totaling $4.6 million as of each of March 31, 2020 and December 31, 2019, respectively, all of which, if recognized, would affect the Company’s effective tax rate. The Company recognizes interest and penalties related to income tax matters in income tax expense, and reports the liability in current or long-term income taxes payable as appropriate.

Note 11 – Segment Reporting

The Company’s reportable segments are based on the internal reporting used by the Company’s Chief Executive Officer, who is the chief operating decision maker (CODM), to assess operating performance and make decisions about the allocation of resources. The Corporate Unallocated and Japan category includes non-reportable segments, as well as research and development and general and administrative costs that the Company does not allocate directly to its operating segments.

Intercompany transactions primarily relate to intercontinental activity and have been eliminated and are excluded from the reported amounts. The difference between income from operations and pre-tax income relates to foreign currency-related gains and losses and interest income on cash balances and investments, which are not allocated to business segments.

Revenue and income from operations by reportable segment for the three months ended March 31, 2020 and 2019 were as follows:

	*Three Months Ended March 31,*
(in thousands)	*2020*		*2019*
Revenue:
United States	$	90,076	$	87,811
Europe		20,787		21,254
Japan		4,245		4,387
Total revenue	$	115,108	$	113,452

	*Three Months Ended March 31,*
(in thousands)	*2020*			*2019*
Income from Operations:
United States	$	25,089		$	26,310
Europe		4,364			4,221
Corporate Unallocated and Japan		(12,628	)		(11,083	)
Total Income from Operations	$	16,825		$	19,448

Total long-lived assets at March 31, 2020 and December 31, 2019 were as follows:

	*March 31,*		*December 31,*
(in thousands)	*2020*		*2019*
Total long-lived assets:
United States	$	215,691	$	210,171
Europe		43,984		45,019
Japan		8,326		8,522
Total Assets	$	268,001	$	263,712

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

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our unaudited consolidated financial statements and related notes appearing elsewhere in this Quarterly Report on Form 10-Q and our Annual Report on Form 10-K for the year ended December 31, 2019.

Forward-Looking Statements

Statements contained in this report regarding matters that are not historical or current facts are “forward-looking statements” within the meaning of The Private Securities Litigation Reform Act of 1995. In some cases, you can identify forward-looking statements by the following words: “may,” “will,” “could,” “would,” “should,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “ongoing” or the negative of these terms or other comparable terminology, although not all forward-looking statements contain these words. These statements involve known and unknown risks, uncertainties and other factors that may cause our results to be materially different than those expressed or implied in such statements. Certain of these risk factors and others are described in Item 1A. “Risk Factors” of this Form 10-Q, as well as our most recent Annual Report on Form 10-K as filed with the SEC. Other unknown or unpredictable factors also could have material adverse effects on our future results. We cannot guarantee future results, levels of activity, performance or achievements. Accordingly, you should not place undue reliance on these forward-looking statements. Finally, we expressly disclaim any intent or obligation to update any forward-looking statements to reflect subsequent events or circumstances.

Overview

We are the world’s largest and fastest digital manufacturer of custom prototypes and on-demand production parts. We manufacture prototypes and low-volume production parts for companies worldwide, who are under increasing pressure to bring their finished products to market faster than their competition. We utilize injection molding, computer numerical control (CNC) machining, 3D printing and sheet metal fabrication to manufacture custom parts for our customers. Our proprietary technology eliminates most of the time-consuming and expensive skilled labor conventionally required to quote and manufacture parts. Our customers conduct nearly all of their business with us over the Internet. We target our products to the millions of product developers and engineers who use three-dimensional computer-aided design (3D CAD) software to design products across a diverse range of end-markets.

Our primary manufacturing product lines currently include Injection Molding, CNC Machining, 3D Printing and Sheet Metal. We continually seek to expand the range of sizes and geometric complexity of the parts we can make with these processes, to extend the variety of materials we are able to support and to identify additional manufacturing processes to which we can apply our technology in order to better serve the evolving preferences and needs of product developers and engineers.

Injection Molding

Our Injection Molding product line uses our 3D CAD-to-CNC machining technology for the automated design and manufacture of molds, which are then used to produce custom plastic and liquid silicone rubber injection-molded parts and over-molded and insert-molded injection-molded parts on commercially available equipment. Our Injection Molding product line works best for on-demand production, bridge tooling, pilot runs and functional prototyping. Our affordable aluminum molds and quick turnaround times help reduce design risk and limit overall production costs for product developers and engineers. Prototype quantities typically range from 25 to 100 parts. Because we retain possession of the molds, customers who need short-run production often come back to Protolabs’ Injection Molding product line for additional quantities. They do so to support pilot production for product testing, while their tooling for high-volume production is being prepared, because they need on-demand manufacturing due to disruptions in their manufacturing process, because their product requires limited annual quantity or because they need end-of-life production support. In 2017, we launched an on-demand manufacturing injection molding product offering. This product offering utilizes our existing processes, but is designed to fulfill the needs of customers with on-going production needs, typically in annual volumes of less than 10,000 parts.

CNC Machining

Our CNC Machining product line uses commercially available CNC machines to offer milling and turning. CNC milling is a manufacturing process that cuts plastic and metal blocks into one or more custom parts based on the 3D CAD model uploaded by the product developer or engineer. CNC turning with live tooling combines both lathe and mill capabilities to machine parts with cylindrical features from metal rod stock. Our efficiencies derive from the automation of the programming of these machines and a proprietary fixturing process.

Quick-turn CNC machining works best for prototyping, form and fit testing, jigs and fixtures and functional components for end-use applications. The CNC Machining product line is well suited to produce small quantities, typically in the range of one to 1,000 parts.

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3D Printing

Our 3D Printing product line includes stereolithography, selective laser sintering, direct metal laser sintering, Multi Jet Fusion, PolyJet and digital light synthesis processes, which offer customers a wide-variety of high-quality, precision rapid prototyping and low-volume production. These processes create parts with a high level of accuracy, detail, strength and durability. Industrial 3D Printing is best suited for functional prototypes, complex designs and end-use applications produced in small quantities, typically in the range of one to several hundred parts.

Sheet Metal

Our Sheet Metal product line includes quick-turn and e-commerce-enabled custom sheet metal parts, which provides customers with prototype and low-volume production parts. The rapid prototype sheet metal process is most often used when form, fit and function are all a priority. Our manufacturing process uses customer 3D CAD models uploaded by the product developer or engineer to fabricate quick-turn prototype sheet metal or short-run production parts. The Sheet Metal product line is well suited to produce quantities in the range of one to 500 parts.

Key Financial Measures and Trends

Revenue

Our operations are comprised of three geographic operating segments in the United States, Europe and Japan. Revenue is derived from our Injection Molding, CNC Machining, 3D Printing and Sheet Metal product lines. Injection Molding revenue consists of sales of custom injection molds and injection-molded parts. CNC Machining revenue consists of sales of CNC-machined custom parts. 3D Printing revenue consists of sales of 3D-printed parts. Sheet Metal revenue consists of sales of fabricated sheet metal custom parts. Our historical and current efforts to increase revenue have been directed at expanding the breadth of our product offerings, gaining new customers and selling to our existing customer base by increasing marketing and selling activities, including:

	●	expanding the breadth and scope of each of our product lines by adding more sizes and materials to our offerings;

	●	the introduction of our 3D Printing product line through our acquisition of FineLine in 2014;

	●	expanding 3D Printing to Europe through our acquisition of Alphaform in October 2015;

	●	the introduction of our Sheet Metal product line through our acquisition of RAPID in 2017; and

	●	continuously improving the usability of our product lines such as our web-centric applications.

During the three months ended March 31, 2020, we served 20,876 unique product developers and engineers who purchased our products through our web-based customer interface, an increase of 1.5% over the same period in 2019.

Cost of Revenue, Gross Profit and Gross Margin

Cost of revenue consists primarily of raw materials, equipment depreciation, employee compensation, benefits, stock-based compensation, facilities costs and overhead allocations associated with the manufacturing process for molds and custom parts. We expect our personnel-related costs to increase in order to retain and attract top talent and remain competitive in the market. Overall, we expect cost of revenue to increase in absolute dollars, but remain relatively constant as a percentage of total revenue.

We define gross profit as our revenue less our cost of revenue, and we define gross margin as gross profit expressed as a percentage of revenue. Our gross profit and gross margin are affected by many factors, including our mix of revenue by product line, pricing, sales volume, manufacturing costs, the costs associated with increasing production capacity, the mix between domestic and foreign revenue sources and foreign exchange rates.

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Operating Expenses

Operating expenses consist of marketing and sales, research and development and general and administrative expenses. Personnel-related costs are the most significant component in each of these categories.

Our recent growth in operating expenses is mainly due to higher headcounts to support our growth and expansion, and we expect that trend to continue. Our business strategy is to continue to be a leading online and technology-enabled manufacturer of quick-turn, on-demand injection-molded, CNC-machined, CNC-turned, 3D-printed and sheet metal custom parts for prototyping and low-volume production. In order to achieve our goals, we anticipate continued substantial investments in technology and personnel, resulting in increased operating expenses.

Marketing and sales. Marketing and sales expense consists primarily of employee compensation, benefits, commissions, stock-based compensation, marketing programs such as electronic, print and pay-per-click advertising, trade shows and other related overhead. We expect sales and marketing expense to increase in the future as we increase the number of marketing and sales professionals and marketing programs targeted to increase our customer base and grow revenue.

Research and development. Research and development expense consists primarily of personnel and outside service costs related to the development of new processes and product lines, enhancement of existing product lines, development of software for internal use, maintenance of internally developed software, quality assurance and testing. Costs for internal use software are evaluated by project and capitalized where appropriate under ASC 350-40, Intangibles — Goodwill and Other, Internal-Use Software. We expect research and development expense to increase in the future as we seek to enhance our e-commerce interface technology, internal software and supporting business systems, and continue to expand our product lines.

General and administrative. General and administrative expense consists primarily of employee compensation, benefits, stock-based compensation, professional service fees related to accounting, tax and legal and other related overhead. We expect general and administrative expense to increase in the future as we continue to grow and expand as a global organization.

Other Income, net

Other income, net primarily consists of foreign currency-related gains and losses and interest income on cash balances and investments. Our foreign currency-related gains and losses will vary depending upon movements in underlying exchange rates. Our interest income will vary each reporting period depending on our average cash balances during the period, composition of our marketable security portfolio and the current level of interest rates.

Provision for Income Taxes

Provision for income taxes is comprised of federal, state, local and foreign taxes based on pre-tax income. Overall, we expect our effective tax rate for 2020 and beyond will remain consistent based on the current tax laws.

Market Conditions

On March 11, 2020, the World Health Organization declared the outbreak of the novel coronavirus (COVID-19) a pandemic. Its full financial impact is unknown at this time and will depend on the duration of government restrictions, including travel restrictions, quarantines, shelter in place orders and shutdowns and duration of the economic slowdown and nature and timing of a recovery. The Company has been deemed an essential business and all of our global manufacturing operations have remained open. The Company has activated a global, cross-functional response team, which is closely monitoring the situation and implementing additional safety measures to help ensure the well-being of our employees, customers and suppliers, to minimize disruptions and provide for the safe and reliable supply of products to our customers. In accordance with the guidance provided by both the World Health Organization and the U.S. Centers for Disease Control and Prevention, the Company has implemented safe work practices, including social distancing and work from home guidelines.

We are actively monitoring key product availability and continue to stay connected with our customers to understand impacts on their operations. All of these efforts will help us better plan and prepare, so we can continue to be a leading supplier of custom parts. In anticipation of exposure due to an economic slowdown driven by COVID-19, the Company increased its bad debt reserve by $0.9 million as of March 31, 2020.

The Coronavirus Aid, Relief, and Economic Security (CARES) Act was signed into law on March 27th, 2020. The CARES Act is meant to infuse companies with various income and payroll tax cash benefits to ease the impact of the pandemic. A technical correction to the Tax Cuts and Jobs Act of 2017 was included in the CARES Act allowing qualified improvement property to claim bonus depreciation for respective assets placed in service in 2018 and 2019. The impact of the CARES Act to the Company was a $2.6 million reduction in our income taxes payable and a corresponding increase to our deferred tax liability.

See "Risk Factors" in Item 1A of this Quarterly Report on Form 10-Q for further information of the possible impact of the COVID-19 pandemic on our business.

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Results of Operations

The following table summarizes our results of operations and the related changes for the periods indicated. The results below are not necessarily indicative of the results for future periods.

	Three Months Ended March 31,								Change
(dollars in thousands)	2020				2019				$			%
Revenue	$	115,108	100.0		$	113,452	100.0		$	1,656			1.5
Cost of revenue		57,008	49.5			54,592	48.1			2,416			4.4
Gross profit		58,100	50.5			58,860	51.9			(760	)		(1.3	)
Operating expenses:
Marketing and sales		18,180	15.8			18,577	16.4			(397	)		(2.1	)
Research and development		8,987	7.8			8,013	7.1			974			12.1
General and administrative		14,108	12.3			12,822	11.3			1,286			10.0
Total operating expenses		41,275	35.9			39,412	34.8			1,863			4.7
Income from operations		16,825	14.6			19,448	17.1			(2,623	)		(13.5	)
Other income, net		1,054	0.9			213	0.2			841			*
Income before income taxes		17,879	15.5			19,661	17.3			(1,782	)		(9.1	)
Provision for income taxes		3,895	3.4			4,150	3.6			(255	)		(6.1	)
Net income	$	13,984	12.1	%	$	15,511	13.7	%	$	(1,527	)		(9.8	)%

Stock-based compensation expense included in the statements of operations data above for the three months ended March 31, 2020 and 2019 was as follows:

	Three Months Ended March 31,
(dollars in thousands)	2020		2019
Stock options and restricted stock	$	2,738	$	2,779
Employee stock purchase plan		295		261
Total stock-based compensation expense	$	3,033	$	3,040

Cost of revenue	$	521	$	421
Operating expenses:
Marketing and sales		618		549
Research and development		521		423
General and administrative		1,373		1,647
Total stock-based compensation expense	$	3,033	$	3,040

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Comparison of Three Months Ended March 31, 2020 and 2019

Revenue

Revenue by reportable segment and the related changes for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020					2019					Change
(dollars in thousands)	$		% of Total Revenue			$		% of Total Revenue			$			%
Revenue
United States	$	90,076		78.3	%	$	87,811		77.4	%	$	2,265			2.6	%
Europe		20,787		18.1			21,254		18.7			(467	)		(2.2	)
Japan		4,245		3.7			4,387		3.9			(142	)		(3.2	)
Total revenue	$	115,108		100.0	%	$	113,452		100.0	%	$	1,656			1.5	%

Our revenue increased $1.7 million, or 1.5%, for the three months ended March 31, 2020 compared to the same period in 2019. By reportable segment, revenue in the United States increased $2.3 million, or 2.6%, for the three months ended March 31, 2020 compared to the same period in 2019. Revenue in Europe decreased $0.5 million, or 2.2%, and revenue in Japan decreased $0.1 million, or 3.2%, in each case for the three months ended March 31, 2020 compared to the same period in 2019. Our revenue in Europe was impacted by foreign currency exchange rates. Excluding the impact of the changes in foreign currency exchange rates, Europe revenue growth would have been 0.9%. In addition, our revenue in each region was impacted by a decline in order activity driven by the COVID-19 pandemic.

Our revenue growth during the three months ended March 31, 2020 was the result of an increase in the volume of product developers and engineers we served. During the three months ended March 31, 2020, we served 20,876 unique product developers and engineers, an increase of 1.5% over the same period in 2019.

Our revenue increases were primarily driven by increases in sales personnel and marketing activities. Our sales personnel focus on gaining new customer accounts and expanding the depth and breadth of existing customer accounts. Our marketing personnel focus on marketing activities that result in the greatest number of customer leads to support sales activity. International revenue was negatively impacted by $0.6 million during the three months ended March 31, 2020 compared to the same period in 2019 as a result of foreign currency movements, primarily the weakening of the British Pound and Euro relative to the United States Dollar.

Revenue by product line and the related changes for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020					2019					Change
(dollars in thousands)	$		% of Total Revenue			$		% of Total Revenue			$			%
Revenue
Injection Molding	$	54,776		47.6	%	$	55,311		48.8	%	$	(535	)		(1.0)	%
CNC Machining		37,885		32.9			37,872		33.4			13			0.0
3D Printing		15,948		13.9			14,480		12.8			1,468			10.1
Sheet Metal		5,649		4.9			5,025		4.4			624			12.4
Other Revenue		850		0.7			764		0.7			86			11.3
Total revenue	$	115,108		100.0	%	$	113,452		100.0	%	$	1,656			1.5	%

By product line, our revenue growth was driven by a 10.1% increase in 3D Printing revenue, a 12.4% increase in Sheet Metal revenue and an 11.3% increase in Other Revenue, which was partially offset by a 1.0% decrease in Injection Molding revenue, in each case for the three months ended March 31, 2020 compared to the same period in 2019.

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Cost of Revenue, Gross Profit and Gross Margin

Cost of Revenue. Cost of revenue increased $2.4 million, or 4.4%, for the three months ended March 31, 2020 compared to the same period in 2019, which was greater than the rate of revenue increase of 1.5% for the three months ended March 31, 2020 compared to the same period in 2019. The increase in cost of revenue resulted from the growth of the business, investments to support future growth and the costs of inflation. Specifically, the increases were driven by an increase in direct labor headcount and wage inflation resulting in personnel and related cost increases of $1.5 million and equipment and facility-related cost increases of $1.0 million to support increased sales volumes and future growth of the business, which were partially offset by raw material and production cost decreases of $0.1 million.

Gross Profit and Gross Margin. Gross profit decreased from $58.9 million in the three months ended March 31, 2019 to $58.1 million in the three months ended March 31, 2020 primarily due to an increase in expenses associated with the cost of revenue. Gross margin decreased from 51.9% in the three months ended March 31, 2019 to 50.5% in the three months ended March 31, 2020 due to investments in facilities and personnel to support future growth and the timing and mix of revenue.

Operating Expenses, Other Income, net and Provision for Income Taxes

Marketing and Sales. Marketing and sales expenses decreased $0.4 million, or 2.1%, during the three months ended March 31, 2020 compared to the same period in 2019 due primarily to personnel and related cost decreases of $0.2 million as well as marketing program cost decreases of $0.2 million.

Research and Development. Our research and development expenses increased $1.0 million, or 12.1%, during the three months ended March 31, 2020 compared to the same period in 2019 due to an increase in headcount resulting in personnel and related cost increases of $1.0 million.

General and Administrative. Our general and administrative expenses increased $1.3 million, or 10.0%, during the three months ended March 31, 2020 compared to the same period in 2019 due to personnel and related cost increases of $1.2 million and administrative cost increases of $0.5 million primarily driven by an increase to our bad debt expense as a result of anticipated exposure related to the novel coronavirus (COVID-19) pandemic, which were partially offset by stock-based compensation decreases of $0.3 million, as well as a $0.1 million decrease in amortization cost.

Other Income, net. We recognized other income, net of $1.1 million for the three months ended March 31, 2020, an increase of $0.9 million compared to other income, net of $0.2 million for the three months ended March 31, 2019. Other income, net for the three months ended March 31, 2020 primarily consisted of $0.6 million in interest income on investments and a $0.7 million gain on foreign currency, which was partially offset by $0.2 million in other expense. Other income, net for the three months ended March 31, 2019 primarily consisted of $0.6 million in interest income on investments, which was partially offset by a $0.4 million loss on foreign currency.

Provision for Income Taxes. Our effective tax rate of 21.8% for the three months ended March 31, 2020 increased 0.7% compared to 21.1% for the same period in 2019. The increase in the effective tax rate is primarily due to a decrease in tax benefits from the vesting of restricted stock and the exercise of stock options and an increase in the state tax provision. Our income tax provision of $3.9 million for the three months ended March 31, 2020 decreased $0.3 million compared to our income tax provision of $4.2 million for the three months ended March 31, 2019.

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Liquidity and Capital Resources

Cash Flows

The following table summarizes our cash flows during the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
(dollars in thousands)	2020			2019
Net cash provided by operating activities	$	22,410		$	18,002
Net cash (used in) provided by investing activities		(43,350	)		271
Net cash used in financing activities		(12,098	)		(17,729	)
Effect of exchange rates on cash and cash equivalents		(282	)		(240	)
Net (decrease) increase in cash and cash equivalents	$	(33,320	)	$	304

Sources of Liquidity

Historically, we have primarily financed our operations and capital expenditures through cash flow from operations. We had cash and cash equivalents of $91.9 million as of March 31, 2020, a decrease of $33.3 million from December 31, 2019. The decrease in our cash was primarily due to cash used in investing activity and repurchases of common stock, which were partially offset by cash generated through operations.

Cash Flows from Operating Activities

Cash flows from operating activities were $22.4 million during the three months ended March 31, 2020 and primarily consisted of net income of $14.0 million, adjusted for certain non-cash items, including depreciation and amortization of $8.0 million, stock-based compensation expense of $3.0 million and deferred taxes of $3.4 million, which were partially offset by changes in operating assets and liabilities and other items totaling $6.0 million. Cash flows from operating activities were $18.0 million during the three months ended March 31, 2019 and primarily consisted of net income of $15.5 million, adjusted for certain non-cash items, including depreciation and amortization of $7.4 million, stock-based compensation expense of $3.0 million and deferred taxes of $0.4 million, which were partially offset by changes in operating assets and liabilities and other items totaling $8.3 million.

Cash flows from operating activities increased $4.4 million during the three months ended March 31, 2020 compared to the same period in 2019, primarily due to increases in changes in operating assets and liabilities of $3.3 million driven by timing of cash receipts and payments, deferred taxes of $3.0 million and depreciation and amortization of $0.5 million, which were partially offset by decreases in net income of $1.5 million and decreases in other operating activities of $0.9 million.

Cash Flows from Investing Activities

Cash used in investing activities was $43.3 million during the three months ended March 31, 2020, consisting of $37.6 million for the purchases of marketable securities, $13.4 million for the purchases of property, equipment and other capital assets and $3.0 million for purchases of other assets and investments, which were partially offset by $10.7 million in proceeds from maturities of marketable securities.

Cash provided by investing activities was $0.3 million during the three months ended March 31, 2019, consisting of $17.0 million in proceeds from maturities of marketable securities, which were partially offset by $12.7 million for the purchases of property, equipment and other capital assets and $4.0 million for purchases of other assets and investments.

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Cash Flows from Financing Activities

Cash used in financing activities was $12.1 million during the three months ended March 31, 2020, consisting of $11.2 million in repurchases of common stock and $1.0 million in purchases of shares withheld for tax obligations associated with equity transactions, which were partially offset by $0.1 million in proceeds from the exercise of stock options.

Cash used in financing activities was $17.7 million during the three months ended March 31, 2019, consisting of $17.3 million in repurchases of common stock and $0.6 million in purchases of shares withheld for tax obligations, which were partially offset by $0.2 million in proceeds from the exercise of stock options.

Off-Balance Sheet Arrangements

Since our inception, we have not engaged in any off-balance sheet arrangements, including the use of structured finance, special purpose entities or variable interest entities.

Critical Accounting Policies and Use of Estimates

We have adopted various accounting policies to prepare the Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP). Our significant accounting policies are disclosed in Note 2 to the Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2019.

Recent Accounting Pronouncements

For information on recent accounting pronouncements, see Note 2 to the Consolidated Financial Statements appearing in Part I, Item 1 in this Quarterly Report on Form 10-Q.

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Item 3. Quantitative and Qualitative Disclosures about Market Risk

Foreign Currency Risk

As a result of our foreign operations, we have revenue, expenses, assets and liabilities that are denominated in foreign currencies. We generate revenue and incur production costs and operating expenses in British Pounds, Euros and Japanese Yen.

Our operating results and cash flows are adversely impacted when the United States Dollar appreciates relative to foreign currencies. Additionally, our operating results and cash flows are adversely impacted when the British Pound appreciates relative to the Euro. As we expand internationally, our results of operations and cash flows will become increasingly subject to changes in foreign currency exchange rates.

We have not used forward contracts or currency borrowings to hedge our exposure to foreign currency risk. Foreign currency risk can be assessed by estimating the change in results of operations or financial position resulting from a hypothetical 10% adverse change in foreign exchange rates. We believe such a change would generally not have a material impact on our financial position, but could have a material impact on our results of operations. We recognized a foreign currency gain of $0.7 million during the three months ended March 31, 2020 and a foreign currency loss of $0.4 million during the three months ended March 31, 2019. The changes in foreign exchange rates had a negative impact on consolidated revenue of $0.6 million for the three months ended March 31, 2020.

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Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (Exchange Act)) as of the end of the period covered by this report. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of the period covered by this quarterly report, our disclosure controls and procedures are effective and provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported accurately and within the time frames specified in the SEC’s rules and forms and accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) during the period covered by this report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II. OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we are subject to various legal proceedings and claims that arise in the ordinary course of our business activities. Although the results of litigation and claims cannot be predicted with certainty, as of the date of these financial statements, we do not believe we are party to any litigation the outcome of which, if determined adversely to us, would individually or in the aggregate be reasonably expected to have a material adverse effect on our business.

Item 1A. Risk Factors

Part I, Item 1A. “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2019 includes a discussion of our risk factors. The information presented below updates, and should be read in conjunction with, the risk factors and information disclosed in our Form 10-K. Except as presented below, there have been no material changes from the risk factors described in our Form 10-K.

Economic uncertainty arising from the recent COVID-19 pandemic could adversely affect our business and results of operations.

On March 11, 2020, the World Health Organization declared the outbreak of the novel coronavirus (COVID-19) a pandemic. The COVID-19 outbreak and associated counter-acting measures implemented by governments around the world, as well as increased business uncertainty, could adversely affect our business and results of operations. At this time, the Company is monitoring the global outbreak of the COVID-19 and is taking steps to mitigate the risks to our employees, customers, suppliers and other stakeholders. The Company has been deemed an essential business and all of our global manufacturing operations have remained open. The current business environment and quickly evolving market conditions require significant management judgment to interpret and quantify the potential impact on our assumptions about future financial performance and operating cash flows. To the extent that changes in the current business environment impact our ability to achieve levels of forecasted operating results and cash flows, if our stock price were to trade below book value per share for an extended period of time and/or should other events occur indicating the carrying value of our assets might be impaired, we may be required to recognize impairment losses on goodwill, intangible and tangible assets.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

On February 9, 2017, we announced that our board of directors had authorized the repurchase of shares of our common stock from time to time on the open market or in privately negotiated purchases, at an aggregate purchase price of up to $50 million. On May 16, 2019, we announced that our board of directors approved a $50 million increase in its authorized stock repurchase program and extended the term of the program through December 31, 2023. This authorization increases the stock repurchase program to $100 million.

The timing and amount of any share repurchases will be determined by our management based on market conditions and other factors.

The common stock repurchase does not obligate us to repurchase any dollar amount or number of shares. During the three months ended March 31, 2020, we repurchased 161,460 shares of our common stock at a total purchase price of $12.0 million under this program. Common stock repurchase activity through March 31, 2020 was as follows:

Period	Total Number of Shares Purchased		Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Maximum Dollar Value of Shares that May Yet Be Purchased Under the Plans or Programs (in thousands) (1)
January 1, 2020 through January 31, 2020		-	$	-		-	$	49,854
February 1, 2020 through February 29, 2020		4,916	$	87.15		4,916	$	49,426
March 1, 2020 through March 31, 2020		156,544	$	73.77		156,544	$	37,877
		161,460	$	74.18		161,460	$	37,877

(1) Effective May 15, 2019 the Board of Directors authorized the repurchase of shares of the Company’s common stock from time to time on the open market or in privately negotiated purchases, at an aggregate purchase price of up to $100 million. The term of the program runs through December 31, 2023.

Item 3. Defaults Upon Senior Securities

No matters to disclose.

Item 4. Mine Safety Disclosures

No matters to disclose.

Item 5. Other Information

No matters to disclose.

Table of Contents

Item 6. Exhibits

The following documents are filed as part of this report:

Exhibit Number			Description of Exhibit
3.1⁽¹⁾			Third Amended and Restated Articles of Incorporation of Proto Labs, Inc.
3.2⁽²⁾			Articles of Amendment to Third Amended and Restated Articles of Incorporation of Proto Labs, Inc. dated May 20, 2015
3.3⁽³⁾			Second Amended and Restated By-Laws of Proto Labs, Inc., as amended through November 8, 2016
31.1			Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act
31.2			Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act
32.1			Certification of the Chief Executive Officer and the Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act
101.SCH			XBRL Taxonomy Extension Schema Document
101.CAL			XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF			XBRL Taxonomy Extension Definition Linkbase Document
101.LAB			XBRL Taxonomy Extension Label Linkbase Document
101.PRE			XBRL Taxonomy Extension Presentation Linkbase Document
104			Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

⁽¹⁾	Previously filed as Exhibit 3.2 to the Company’s Registration Statement on Form S-1/A (File No. 333-175745), filed with the Commission on February 13, 2012, and incorporated by reference herein.
⁽²⁾	Previously filed as Exhibit 3.1 to the Company's Form 8-K (File No. 001-35435), filed with the Commission on May 21, 2015 and incorporated by reference herein.
⁽³⁾	Previously filed as Exhibit 3.1 to the Company's Form 8-K (File No. 001-35435), filed with the Commission on November 8, 2016 and incorporated by reference herein.

Table of Contents

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		Proto Labs, Inc.

Date: May 5, 2020		/s/ Victoria M. Holt
		Victoria M. Holt
		President and Chief Executive Officer (Principal Executive Officer)

Date: May 5, 2020

/s/ John A. Way

John A. Way

Chief Financial Officer

(Principal Financial Officer)

ex_150111.htm

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) OF

THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Victoria M. Holt, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Proto Labs, Inc.;

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:

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;

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;

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

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):

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

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.

ex_150111.htm

Exhibit 31.2

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) OF

THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, John A. Way, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Proto Labs, Inc.;

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.

ex_150111.htm

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Victoria M. Holt, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Proto Labs, Inc. on Form 10-Q for the fiscal quarter ended March 31, 2020 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Proto Labs, Inc.

Date: May 5, 2020

	By:		/s/ Victoria M. Holt
	Name:		Victoria M. Holt
	Title:		President and Chief Executive Officer

I, John A. Way, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Proto Labs, Inc. on Form 10-Q for the fiscal quarter ended March 31, 2020 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Proto Labs, Inc.

Date: May 5, 2020

	By:		/s/ John A. Way
	Name:		John A. Way
	Title:		Chief Financial Officer

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income	$ 13,984	$ 15,511
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,958	7,439
Stock-based compensation expense	3,033	3,040
Deferred taxes	3,392	379
Amortization of held-to-maturity securities	55	16
Other	(644)	236
Changes in operating assets and liabilities:
Accounts receivable	(5,084)	(2,386)
Inventories	(537)	739
Prepaid expenses and other	(1,240)	(211)
Income taxes	(841)	3,006
Accounts payable	1,739	(805)
Accrued liabilities and other	595	(8,962)
Net cash provided by operating activities	22,410	18,002
Investing activities
Purchases of property, equipment and other capital assets	(13,421)	(12,735)
Purchases of other assets and investments	(3,000)	(4,000)
Purchases of marketable securities	(37,629)	0
Proceeds from maturities of marketable securities	10,700	17,006
Net cash (used in) provided by investing activities	(43,350)	271
Financing activities
Proceeds from exercises of stock options	135	174
Purchases of shares withheld for tax obligations	(1,048)	(594)
Repurchases of common stock	(11,185)	(17,309)
Net cash used in financing activities	(12,098)	(17,729)
Effect of exchange rate changes on cash and cash equivalents	(282)	(240)
Net (decrease) increase in cash and cash equivalents	(33,320)	304
Cash and cash equivalents, beginning of period	125,225	85,046
Cash and cash equivalents, end of period	$ 91,905	$ 85,350

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 91,905	$ 125,225
Short-term marketable securities	38,194	35,437
Accounts receivable, net of allowance for doubtful accounts of $1,821 and $952 as of March 31, 2020 and December 31, 2019, respectively	62,091	57,450
Inventory	10,507	10,075
Prepaid expenses and other current assets	9,777	8,232
Total current assets	212,474	236,419
Property and equipment, net	268,001	263,712
Goodwill	128,752	128,752
Other intangible assets, net	16,615	17,369
Long-term marketable securities	37,077	12,960
Operating lease assets	10,548	11,425
Other long-term assets	4,623	3,030
Total assets	678,090	673,667
Current liabilities
Accounts payable	18,219	16,804
Accrued compensation	12,460	15,058
Accrued liabilities and other	12,950	11,057
Current operating lease liabilities	3,254	3,340
Income taxes payable	414	1,322
Total current liabilities	47,297	47,581
Long-term operating lease liabilities	7,871	8,565
Long-term deferred tax liabilities	29,652	26,283
Other long-term liabilities	5,530	5,448
Total liabilities	90,350	87,877
Shareholders' equity
Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and outstanding 0 shares as of each of March 31, 2020 and December 31, 2019	0	0
Common stock, $0.001 par value, authorized 150,000,000 shares; issued and outstanding 26,648,524 and 26,786,459 shares as of March 31, 2020 and December 31, 2019, respectively	27	27
Additional paid-in capital	268,574	268,059
Retained earnings	329,137	324,722
Accumulated other comprehensive loss	(9,998)	(7,018)
Total shareholders' equity	587,740	585,790
Total liabilities and shareholders' equity	$ 678,090	$ 673,667

Note 6 - Marketable Securities - Balance of Held-to-maturity Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Due in one year or less	$ 38,194
Due after one year through five years	37,077
Total marketable securities	$ 75,271	$ 48,397

Note 8 - Stock-based Compensation - Assumptions Used in the Valuation of Options (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Risk-free interest rate	1.59%	2.33%
Expected life (Year)	6 years	6 years
Expected volatility	42.63%	37.36%
Expected dividend yield	0.00%	0.00%
Share-based Payment Arrangement, Option [Member]
Risk-free interest rate	1.47%	2.58%
Expected life (Year)	6 years 3 months	6 years 3 months
Expected volatility	42.40%	42.74%
Expected dividend yield	0.00%	0.00%

Note 8 - Stock-based Compensation

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

Note 8 – Stock-Based Compensation

Employee Stock Purchase Plan

Stock-Based Compensation Expense

Stock-based compensation expense was $3.0 million for each of the three months ended March 31, 2020 and 2019, respectively.

Stock Options

The following table summarizes stock option activity during the three months ended March 31, 2020:

				*Weighted-*
				*Average*
	*Stock Options*			*Exercise Price*
Options outstanding at December 31, 2019		276,266		$	72.38
Granted		33,192			96.72
Exercised		(2,001	)		67.53
Forfeited		(848	)		110.38
Options outstanding at March 31, 2020		306,609		$	74.94

Exercisable at March 31, 2020		187,326		$	62.48

The weighted-average grant date fair value of options that were granted during the three months ended March 31, 2020 was $41.72.

The following table provides the assumptions used in the Black-Scholes pricing model valuation of options during the three months ended March 31, 2020 and 2019:

	*Three Months Ended March 31,*
	*2020*	*2019*
Risk-free interest rate	1.47%	2.58%
Expected life (years)	6.25	6.25
Expected volatility	42.40%	42.74%
Expected dividend yield	0%	0%

As of March 31, 2020, there was $4.5 million of unrecognized compensation expense related to unvested stock options, which is expected to be recognized over a weighted-average period of 2.9 years.

Restricted Stock

Restricted stock awards are share-settled awards and restrictions lapse ratably over the vesting period, which is generally a period from four to five years, beginning on the first anniversary of the grant date, subject to the employee's continuing service to the Company. For directors, restrictions generally lapse in full on the first anniversary of the grant date.

The following table summarizes restricted stock activity during the three months ended March 31, 2020:

Weighted-

Average

Grant Date

Restricted

Fair Value

Stock

Per Share

Restricted stock at December 31, 2019
314,973 $ 89.55

Granted 28,105 96.72

Restrictions lapsed (25,598 ) 79.27

Forfeited (7,616 ) 90.47

Restricted stock at March 31, 2020 309,864 $ 91.03

As of March 31, 2020, there was $21.0 million of unrecognized compensation expense related to non-vested restricted stock, which is expected to be recognized over a weighted-average period of 2.6 years.

Performance Stock

Performance stock units (PSUs) are expressed in terms of a target number of PSUs, with anywhere between 0 percent and 150 percent of that target number capable of being earned and vesting at the end of a three-year performance period depending on the Company’s performance in the final year of the performance period and the award recipient’s continued employment. The Company’s PSUs granted from 2017 to 2019 are based on performance conditions and the related compensation cost is based on the probability that the performance conditions will be achieved. The Company’s PSUs granted in 2020 are based on market conditions and the related compensation cost is based on the fair value at grant date calculated using a Monte Carlo pricing model.

The following table summarizes performance stock activity during the three months ended March 31, 2020:

Weighted-

Average

Grant Date

Performance

Fair Value

Stock

Per Share

Performance stock at December 31, 2019
9,383 $ 58.35

Granted
19,956 118.66

Restrictions lapsed
(7,113 ) 58.35

Performance change
- -

Forfeited
(2,270 ) 58.35

Performance stock at March 31, 2020
19,956 $ 118.66

The following table provides the assumptions used in the Monte Carlo pricing model valuation of PSUs during the three months ended March 31, 2020:

Three Months Ended March 31,

2020

Risk-free interest rate
1.41%

Expected life (years)
2.88

Expected volatility
38.70%

Expected dividend yield
0%

As of March 31, 2020, there was $2.3 million of unrecognized compensation expense related to non-vested performance stock, which is expected to be recognized over a weighted-average period of 2.9 years.

Employee Stock Purchase Plan

The following table presents the assumptions used to estimate the fair value of the ESPP during the three months ended March 31, 2020 and 2019:

Three Months Ended March 31,

2020

2019

Risk-free interest rate

1.59%

2.33%

Expected life (months)
6.00 6.00

Expected volatility

42.63%

37.36%

Expected dividend yield

0%

0%

Note 4 - Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Goodwill and Intangible Assets Disclosure [Text Block]

Note 4 – Goodwill and Other Intangible Assets

There were no changes in the carrying amount of Goodwill during the three months ended March 31, 2020.

Intangible assets other than goodwill at March 31, 2020 and December 31, 2019 were as follows:

	*March 31, 2020*							*December 31, 2019*							*Useful*	*Weighted Average*
(in thousands)	*Gross*		*Accumulated Amortization*			*Net*		*Gross*		*Accumulated Amortization*			*Net*		*Life (in years)*	*Useful Life Remaining (in years)*
Intangible assets with finite lives:
Marketing assets	$	930	$	(550	)	$	380	$	930	$	(527	)	$	403	10.0	4.0
Non-compete agreement		270		(226	)		44		270		(222	)		48	2.0 - 5.0	2.8
Software technology		13,229		(2,618	)		10,611		13,229		(2,275	)		10,954	10.0	7.8
Customer relationships		10,070		(4,490	)		5,580		10,070		(4,106	)		5,964	6.0 - 9.0	3.6
Total intangible assets	$	24,499	$	(7,884	)	$	16,615	$	24,499	$	(7,130	)	$	17,369

Amortization expense for intangible assets was $0.8 million and $0.9 million for the three months ended March 31, 2020 and 2019, respectively.

Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets is as follows:

(in thousands)	*Estimated Amortization Expense*
Remaining 2020	$	2,262
2021		3,016
2022		3,016
2023		2,813
2024		1,400
Thereafter		4,108
Total estimated amortization expense	$	16,615

Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2020

Accounting Policies [Abstract]

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Adopted Accounting Pronouncements

Note 11 - Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Income from Operations by Geographic Area [Table Text Block]

	*Three Months Ended March 31,*
(in thousands)	*2020*			*2019*
Income from Operations:
United States	$	25,089		$	26,310
Europe		4,364			4,221
Corporate Unallocated and Japan		(12,628	)		(11,083	)
Total Income from Operations	$	16,825		$	19,448

Long-lived Assets by Geographic Areas [Table Text Block]

	*March 31,*		*December 31,*
(in thousands)	*2020*		*2019*
Total long-lived assets:
United States	$	215,691	$	210,171
Europe		43,984		45,019
Japan		8,326		8,522
Total Assets	$	268,001	$	263,712

Operating Segments [Member]

Notes Tables

Revenue from External Customers by Geographic Areas [Table Text Block]

	*Three Months Ended March 31,*
(in thousands)	*2020*		*2019*
Revenue:
United States	$	90,076	$	87,811
Europe		20,787		21,254
Japan		4,245		4,387
Total revenue	$	115,108	$	113,452

Note 6 - Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Debt Securities, Held-to-maturity [Table Text Block]

	*March 31, 2020*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	12,704	$	19		(14	)	$	12,709
Corporate debt securities		35,100		45		(239	)		34,906
U.S. government agency securities		20,801		61		-			20,862
Certificates of deposit/time deposits		3,697		31		(2	)		3,726
Commercial paper		2,969		11		-			2,980
Total marketable securities	$	75,271	$	167	$	(255	)	$	75,183

	*December 31, 2019*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	10,204	$	9	$	(3	)	$	10,210
Corporate debt securities		26,944		80		(12	)		27,012
U.S. government agency securities		6,274		1		(7	)		6,268
Certificates of deposit/time deposits		1,484		22		-			1,506
Commercial paper		3,491		-		-			3,491
Total marketable securities	$	48,397	$	112	$	(22	)	$	48,487

Investments Classified by Contractual Maturity Date [Table Text Block]

	*March 31,*
(in thousands)	*2020*
Due in one year or less	$	38,194
Due after one year through five years		37,077
Total marketable securities	$	75,271

Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Income Tax Expense (Benefit), Total	$ 3,895	$ 4,150
Effective Income Tax Rate Reconciliation, Percent, Total	21.80%	21.10%
Effective Income Tax Rate Continuing Operations Increase (Decrease) During the Period	0.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Unrecognized Tax Benefits, Ending Balance	$ 4,600		$ 4,600

Note 3 - Net Income Per Common Share - Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income	$ 13,984	$ 15,511
Basic - weighted-average shares outstanding: (in shares)	26,776,806	26,963,366
Employee stock options and other (in shares)	152,834	213,673
Diluted - weighted-average shares outstanding: (in shares)	26,929,640	27,177,039
Basic (in dollars per share)	$ 0.52	$ 0.58
Diluted (in dollars per share)	$ 0.52	$ 0.57

Note 7 - Inventory (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	*March 31,*			*December 31,*
(in thousands)	*2020*			*2019*
Raw materials	$	10,237		$	9,818
Work in process		499			501
Total inventory		10,736			10,319
Allowance for obsolescence		(229	)		(244	)
Inventory, net of allowance	$	10,507		$	10,075

Note 9 - Accumulated Other Comprehensive Loss - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balance	$ 585,790	$ 541,497
Balance	587,740	542,795
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(7,018)	(8,492)
Other comprehensive income (loss) before reclassifications	(2,980)	476
Amounts reclassified from accumulated other comprehensive loss	0	0
Net current-period other comprehensive income (loss)	(2,980)	476
Balance	$ (9,998)	$ (8,016)

Note 11 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Long-lived assets	$ 268,001	$ 263,712
Operating Segments [Member]
Long-lived assets	268,001	263,712
Operating Segments [Member] \| United States Segment [Member]
Long-lived assets	215,691	210,171
Operating Segments [Member] \| Europe Segment [Member]
Long-lived assets	43,984	45,019
Operating Segments [Member] \| Japan Segment [Member]
Long-lived assets	$ 8,326	$ 8,522

Note 1 - Basis of Presentation

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

Note 1 – Basis of Presentation

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Allowance for doubtful accounts	$ 1,821	$ 952
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	26,648,524	26,786,459
Common stock, shares outstanding (in shares)	26,648,524	26,786,459

Note 6 - Marketable Securities - Short-term and Long-term Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized Cost	$ 75,271	$ 48,397
Unrealized Gains	167	112
Unrealized Losses	(255)	(22)
Fair Value	75,183	48,487
Bank Time Deposits [Member]
Amortized Cost	3,697	1,484
Unrealized Gains	31	22
Unrealized Losses	(2)	0
Fair Value	3,726	1,506
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	12,704	10,204
Unrealized Gains	19	9
Unrealized Losses	(14)	(3)
Fair Value	12,709	10,210
Corporate Debt Securities [Member]
Amortized Cost	35,100	26,944
Unrealized Gains	45	80
Unrealized Losses	(239)	(12)
Fair Value	34,906	27,012
US Government Agencies Debt Securities [Member]
Amortized Cost	20,801	6,274
Unrealized Gains	61	1
Unrealized Losses	0	(7)
Fair Value	20,862	6,268
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Amortized Cost	2,969	3,491
Unrealized Gains	11	0
Unrealized Losses	0	0
Fair Value	$ 2,980	$ 3,491

Note 8 - Stock-based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Options outstanding (in shares) \| shares	276,266
Options outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 72.38
Granted (in shares) \| shares	33,192
Granted, weighted-average exercise price (in dollars per share) \| $ / shares	$ 96.72
Exercised (in shares) \| shares	(2,001)
Exercised, weighted-average exercise price (in dollars per share) \| $ / shares	$ 67.53
Forfeited (in shares) \| shares	(848)
Forfeited, weighted-average exercise price (in dollars per share) \| $ / shares	$ 110.38
Options outstanding (in shares) \| shares	306,609
Options outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 74.94
Options exercisable (in shares) \| shares	187,326
Options exercisable, weighted-average exercise price (in dollars per share) \| $ / shares	$ 62.48

Note 3 - Net Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	*Three Months Ended*
	*March 31,*
(in thousands, except share and per share amounts)	*2020*		*2019*
Net income	$	13,984	$	15,511

Basic - weighted-average shares outstanding:		26,776,806		26,963,366
Effect of dilutive securities:
Employee stock options and other		152,834		213,673
Diluted - weighted-average shares outstanding:		26,929,640		27,177,039
Net income per share:
Basic	$	0.52	$	0.58
Diluted	$	0.52	$	0.57

Note 9 - Accumulated Other Comprehensive Loss

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Disclosure of Reclassification Amount [Text Block]

Note 9 – Accumulated Other Comprehensive Loss

	*Three Months Ended*
	*March 31,*
(in thousands)	*2020*			*2019*
Foreign currency translation adjustments
Balance at beginning of period	$	(7,018	)	$	(8,492	)
Other comprehensive income (loss) before reclassifications		(2,980	)		476
Amounts reclassified from accumulated other comprehensive loss		-			-
Net current-period other comprehensive income (loss)		(2,980	)		476
Balance at end of period	$	(9,998	)	$	(8,016	)

Note 5 - Fair Value Measurements

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Fair Value Disclosures [Text Block]

Note 5 – Fair Value Measurements

Level 1—Quoted prices in active markets for identical assets or liabilities.

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

The following table summarizes financial assets as of March 31, 2020 and December 31, 2019 measured at fair value on a recurring basis:

	*March 31, 2020*						*December 31, 2019*
(in thousands)	*Level 1*		*Level 2*		*Level 3*		*Level 1*		*Level 2*		*Level 3*
Financial Assets:
Cash and cash equivalents
Money market mutual fund	$	31,291	$	-	$	-	$	68,962	$	-	$	-
Total	$	31,291	$	-	$	-	$	68,962	$	-	$	-

Note 9 - Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Comprehensive Income (Loss) [Table Text Block]

	*Three Months Ended*
	*March 31,*
(in thousands)	*2020*			*2019*
Foreign currency translation adjustments
Balance at beginning of period	$	(7,018	)	$	(8,492	)
Other comprehensive income (loss) before reclassifications		(2,980	)		476
Amounts reclassified from accumulated other comprehensive loss		-			-
Net current-period other comprehensive income (loss)		(2,980	)		476
Balance at end of period	$	(9,998	)	$	(8,016	)

Note 5 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	*March 31, 2020*						*December 31, 2019*
(in thousands)	*Level 1*		*Level 2*		*Level 3*		*Level 1*		*Level 2*		*Level 3*
Financial Assets:
Cash and cash equivalents
Money market mutual fund	$	31,291	$	-	$	-	$	68,962	$	-	$	-
Total	$	31,291	$	-	$	-	$	68,962	$	-	$	-

Note 4 - Goodwill and Other Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Gross	$ 24,499	$ 24,499
Accumulated Amortization	(7,884)	(7,130)
Net	16,615	17,369
Marketing-Related Intangible Assets [Member]
Gross	930	930
Accumulated Amortization	(550)	(527)
Net	$ 380	403
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	4 years
Noncompete Agreements [Member]
Gross	$ 270	270
Accumulated Amortization	(226)	(222)
Net	$ 44	48
Weighted average useful life remaining (Year)	2 years 9 months 18 days
Noncompete Agreements [Member] \| Minimum [Member]
Useful Life (Year)	2 years
Noncompete Agreements [Member] \| Maximum [Member]
Useful Life (Year)	5 years
Computer Software, Intangible Asset [Member]
Gross	$ 13,229	13,229
Accumulated Amortization	(2,618)	(2,275)
Net	$ 10,611	10,954
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	7 years 9 months 18 days
Customer Relationships [Member]
Gross	$ 10,070	10,070
Accumulated Amortization	(4,490)	(4,106)
Net	$ 5,580	$ 5,964
Weighted average useful life remaining (Year)	3 years 7 months 6 days
Customer Relationships [Member] \| Minimum [Member]
Useful Life (Year)	6 years
Customer Relationships [Member] \| Maximum [Member]
Useful Life (Year)	9 years

Note 8 - Stock-based Compensation - Assumptions Used in the Valuation of Performance Stock (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Risk-free interest rate	1.59%	2.33%
Expected life (Year)	6 years	6 years
Expected volatility	42.63%	37.36%
Expected dividend yield	0.00%	0.00%
Performance Shares [Member]
Risk-free interest rate	1.41%
Expected life (Year)	2 years 10 months 17 days
Expected volatility	38.70%
Expected dividend yield	0.00%

Note 11 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 115,108	$ 113,452
Operating Segments [Member]
Revenue	115,108	113,452
Operating Segments [Member] \| United States Segment [Member]
Revenue	90,076	87,811
Operating Segments [Member] \| Europe Segment [Member]
Revenue	20,787	21,254
Operating Segments [Member] \| Japan Segment [Member]
Revenue	$ 4,245	$ 4,387

Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2018	26,984,747
Balance at Dec. 31, 2018	$ 27	$ 258,502	$ 291,460	$ (8,492)	$ 541,497
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	19,950
Common shares issued on exercise of options and other, net of shares withheld for tax obligations	$ 0	(420)	0	0	(420)
Stock-based compensation expense	$ 0	3,040	0	0	3,040
Repurchases of common stock (in shares)	(157,716)
Repurchases of common stock	$ 0	(1,511)	(15,798)	0	(17,309)
Net income	0	0	15,511	0	15,511
Other comprehensive income
Foreign currency translation adjustment	$ 0	0	0	476	476
Comprehensive income					15,987
Balance (in shares) at Dec. 31, 2018	26,984,747
Balance at Dec. 31, 2018	$ 27	258,502	291,460	(8,492)	541,497
Other comprehensive income
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	19,950
Common shares issued on exercise of options and other, net of shares withheld for tax obligations	$ 0	(420)	0	0	(420)
Stock-based compensation expense	$ 0	3,040	0	0	3,040
Repurchases of common stock (in shares)	(157,716)
Repurchases of common stock	$ 0	(1,511)	(15,798)	0	(17,309)
Net income	$ 0	0	15,511	0	15,511
Balance (in shares) at Mar. 31, 2019	26,846,981
Balance at Mar. 31, 2019	$ 27	259,611	291,173	(8,016)	$ 542,795
Balance (in shares) at Dec. 31, 2019	26,786,459				26,786,459
Balance at Dec. 31, 2019	$ 27	268,059	324,722	(7,018)	$ 585,790
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	23,525
Common shares issued on exercise of options and other, net of shares withheld for tax obligations	$ 0	(902)	0	0	(902)
Stock-based compensation expense	$ 0	3,033	0	0	3,033
Repurchases of common stock (in shares)	(161,460)
Repurchases of common stock	$ 0	(1,616)	(9,569)	0	(11,185)
Net income	0	0	13,984	0	13,984
Other comprehensive income
Foreign currency translation adjustment	$ 0	0	0	(2,980)	(2,980)
Comprehensive income					$ 11,004
Balance (in shares) at Dec. 31, 2019	26,786,459				26,786,459
Balance at Dec. 31, 2019	$ 27	268,059	324,722	(7,018)	$ 585,790
Other comprehensive income
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	23,525
Common shares issued on exercise of options and other, net of shares withheld for tax obligations	$ 0	(902)	0	0	(902)
Stock-based compensation expense	$ 0	3,033	0	0	3,033
Repurchases of common stock (in shares)	(161,460)
Repurchases of common stock	$ 0	(1,616)	(9,569)	0	(11,185)
Net income	$ 0	0	13,984	0	$ 13,984
Balance (in shares) at Mar. 31, 2020	26,648,524				26,648,524
Balance at Mar. 31, 2020	$ 27	$ 268,574	$ 329,137	$ (9,998)	$ 587,740

Document And Entity Information - shares	3 Months Ended
Document And Entity Information - shares	Mar. 31, 2020	Apr. 30, 2020
Document Information [Line Items]
Entity Central Index Key	0001443669
Entity Registrant Name	Proto Labs Inc
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2020
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-35435
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1939628
Entity Address, Address Line One	5540 Pioneer Creek Drive
Entity Address, City or Town	Maple Plain
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55359
City Area Code	763
Local Phone Number	479-3680
Title of 12(b) Security	Common Stock, Par Value $0.001 Per Share
Trading Symbol	PRLB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		26,612,751

Note 3 - Net Income Per Common Share

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Earnings Per Share [Text Block]

Note 3 – Net Income per Common Share

The table below sets forth the computation of basic and diluted net income per share:

	*Three Months Ended*
	*March 31,*
(in thousands, except share and per share amounts)	*2020*		*2019*
Net income	$	13,984	$	15,511

Basic - weighted-average shares outstanding:		26,776,806		26,963,366
Effect of dilutive securities:
Employee stock options and other		152,834		213,673
Diluted - weighted-average shares outstanding:		26,929,640		27,177,039
Net income per share:
Basic	$	0.52	$	0.58
Diluted	$	0.52	$	0.57

Note 11 - Segment Reporting

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

Note 11 – Segment Reporting

Revenue and income from operations by reportable segment for the three months ended March 31, 2020 and 2019 were as follows:

	*Three Months Ended March 31,*
(in thousands)	*2020*		*2019*
Revenue:
United States	$	90,076	$	87,811
Europe		20,787		21,254
Japan		4,245		4,387
Total revenue	$	115,108	$	113,452

	*Three Months Ended March 31,*
(in thousands)	*2020*			*2019*
Income from Operations:
United States	$	25,089		$	26,310
Europe		4,364			4,221
Corporate Unallocated and Japan		(12,628	)		(11,083	)
Total Income from Operations	$	16,825		$	19,448

Total long-lived assets at March 31, 2020 and December 31, 2019 were as follows:

	*March 31,*		*December 31,*
(in thousands)	*2020*		*2019*
Total long-lived assets:
United States	$	215,691	$	210,171
Europe		43,984		45,019
Japan		8,326		8,522
Total Assets	$	268,001	$	263,712

Note 7 - Inventory

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Inventory Disclosure [Text Block]

Note 7 – Inventory

The Company’s inventory consisted of the following as of the dates indicated:

	*March 31,*			*December 31,*
(in thousands)	*2020*			*2019*
Raw materials	$	10,237		$	9,818
Work in process		499			501
Total inventory		10,736			10,319
Allowance for obsolescence		(229	)		(244	)
Inventory, net of allowance	$	10,507		$	10,075

Note 8 - Stock-based Compensation - Restricted Stock Options (Details) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Restricted stock (in shares) \| shares	314,973
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 89.55
Granted (in shares) \| shares	28,105
Granted, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 96.72
Restrictions lapsed (in shares) \| shares	(25,598)
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 79.27
Forfeited (in shares) \| shares	(7,616)
Forfeited, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 90.47
Restricted stock (in shares) \| shares	309,864
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 91.03

Note 4 - Goodwill and Other Intangible Assets - Estimated Aggregated Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Remaining 2020	$ 2,262
2021	3,016
2022	3,016
2023	2,813
2024	1,400
Thereafter	4,108
Total estimated amortization expense	$ 16,615	$ 17,369

Note 7 - Inventory - Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Raw materials	$ 10,237	$ 9,818
Work in process	499	501
Total inventory	10,736	10,319
Allowance for obsolescence	(229)	(244)
Inventory, net of allowance	$ 10,507	$ 10,075

Note 2 - Recent Accounting Pronouncements

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Significant Accounting Policies [Text Block]

Note 2 – Recent Accounting Pronouncements

Recently Adopted Accounting Pronouncements

During the first quarter of 2020, the Company adopted the Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) 2016-13, Financial Instruments – Credit Losses, which is intended to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments held by a reporting entity at each reporting date. The adoption of this guidance had no material impact on our consolidated financial statements.

During the fourth quarter of 2019, the Company early adopted the FASB ASU 2017-04, Intangibles – Goodwill and Other, which is intended to simplify the subsequent measurement of goodwill. The adoption of this guidance had no material impact on our consolidated financial statements.

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statements of Operations:
Revenue	$ 115,108	$ 113,452
Cost of revenue	57,008	54,592
Gross profit	58,100	58,860
Operating expenses
Marketing and sales	18,180	18,577
Research and development	8,987	8,013
General and administrative	14,108	12,822
Total operating expenses	41,275	39,412
Income from operations	16,825	19,448
Other income, net	1,054	213
Income before income taxes	17,879	19,661
Provision for income taxes	3,895	4,150
Net income	$ 13,984	$ 15,511
Net income per share:
Basic (in dollars per share)	$ 0.52	$ 0.58
Diluted (in dollars per share)	$ 0.52	$ 0.57
Shares used to compute net income per share:
Basic (in shares)	26,776,806	26,963,366
Diluted (in shares)	26,929,640	27,177,039
Comprehensive Income (net of tax)
Comprehensive income	$ 11,004	$ 15,987

Note 10 - Income Taxes

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Income Tax Disclosure [Text Block]

Note 10 – Income Taxes

Note 6 - Marketable Securities

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Investment [Text Block]

Note 6 – Marketable Securities

	*March 31, 2020*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	12,704	$	19		(14	)	$	12,709
Corporate debt securities		35,100		45		(239	)		34,906
U.S. government agency securities		20,801		61		-			20,862
Certificates of deposit/time deposits		3,697		31		(2	)		3,726
Commercial paper		2,969		11		-			2,980
Total marketable securities	$	75,271	$	167	$	(255	)	$	75,183

December 31, 2019

(in thousands)

Cost

Unrealized Gains

Unrealized Losses

Fair Value

U.S. municipal securities
$ 10,204 $ 9 $ (3 ) $ 10,210

Corporate debt securities
26,944 80 (12 ) 27,012

U.S. government agency securities
6,274 1 (7 ) 6,268

Certificates of deposit/time deposits
1,484 22 - 1,506

Commercial paper 3,491 - - 3,491

Total marketable securities
$ 48,397 $ 112 $ (22 ) $ 48,487

Fair values for the corporate debt securities are primarily determined based on quoted market prices (Level 1). Fair values for the U.S. municipal securities, U.S. government agency securities, certificates of deposit and U.S. treasury securities are primarily determined using dealer quotes or quoted market prices for similar securities (Level 2).

During the first quarter of 2020, the Company adopted the FASB ASU 2016-13, Financial Instruments – Credit Losses. The Company calculated the expected credit loss for each security in its portfolio using the probability-of-default method. The Company concluded the adoption of the guidance had no material impact on its consolidated financial statements.

Classification of marketable securities as current or non-current is based upon the security’s maturity date as of the date of these financial statements.

The March 31, 2020 balance of held-to-maturity debt securities by contractual maturity is shown in the following table at amortized cost, net of an allowance for credit losses. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

March 31,

(in thousands)

2020

Due in one year or less
$ 38,194

Due after one year through five years
37,077

Total marketable securities
$ 75,271

Note 5 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Inputs, Level 1 [Member]
Money market mutual fund	$ 31,291	$ 68,962
Total	31,291	68,962
Fair Value, Inputs, Level 2 [Member]
Money market mutual fund	0	0
Total	0	0
Fair Value, Inputs, Level 3 [Member]
Money market mutual fund	0	0
Total	$ 0	$ 0

Note 8 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Payment Arrangement, Expense		$ 3.0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 41.72
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date	15.00%
Employee Stock Purchase Plan, Offering Period (Month)	6 months
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 4.5
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 10 months 24 days
Share-based Payment Arrangement, Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Share-based Payment Arrangement, Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	5 years
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 21.0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 7 months 6 days
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	5 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 2.3
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	2 years 10 months 24 days
Percentage of Target Number Capable of Being Earned and Vesting, Lower Limit	0.00%
Percentage of Target Number Capable of Being Earned and Vesting, Upper Limit	150.00%

Note 8 - Stock-based Compensation - Performance Stock (Details) - Performance Shares [Member]	3 Months Ended
	Mar. 31, 2020 $ / shares shares
Performance stock (in shares) \| shares	9,383
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 58.35
Granted (in shares) \| shares	19,956
Granted, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 118.66
Restrictions lapsed (in shares) \| shares	(7,113)
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 58.35
Performance change (in shares) \| shares	0
Performance change, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 0
Forfeited (in shares) \| shares	(2,270)
Forfeited, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 58.35
Performance stock (in shares) \| shares	19,956
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 118.66

Note 4 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill, Period Increase (Decrease), Total	$ 0
Amortization of Intangible Assets, Total	$ 800	$ 900

Note 8 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Share-based Payment Arrangement, Option, Activity [Table Text Block]

				*Weighted-*
				*Average*
	*Stock Options*			*Exercise Price*
Options outstanding at December 31, 2019		276,266		$	72.38
Granted		33,192			96.72
Exercised		(2,001	)		67.53
Forfeited		(848	)		110.38
Options outstanding at March 31, 2020		306,609		$	74.94

Exercisable at March 31, 2020		187,326		$	62.48

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	*Three Months Ended March 31,*
	*2020*	*2019*
Risk-free interest rate	1.47%	2.58%
Expected life (years)	6.25	6.25
Expected volatility	42.40%	42.74%
Expected dividend yield	0%	0%

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

				*Weighted-*
				*Average*
				*Grant Date*
	*Restricted*			*Fair Value*
	*Stock*			*Per Share*
Restricted stock at December 31, 2019		314,973		$	89.55
Granted		28,105			96.72
Restrictions lapsed		(25,598	)		79.27
Forfeited		(7,616	)		90.47
Restricted stock at March 31, 2020		309,864		$	91.03

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

				*Weighted-*
				*Average*
				*Grant Date*
	*Performance*			*Fair Value*
	*Stock*			*Per Share*
Performance stock at December 31, 2019		9,383		$	58.35
Granted		19,956			118.66
Restrictions lapsed		(7,113	)		58.35
Performance change		-			-
Forfeited		(2,270	)		58.35
Performance stock at March 31, 2020		19,956		$	118.66

Schedule of Share-based Payment Award, Awards Other Than Stock Options, Valuation Assumptions [Table Text Block]

		Three Months Ended March 31,
		2020
Risk-free interest rate		1.41%
Expected life (years)		2.88
Expected volatility		38.70%
Expected dividend yield		0%

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

	*Three Months Ended March 31,*
	*2020*	*2019*
Risk-free interest rate	1.59%	2.33%
Expected life (months)	6.00	6.00
Expected volatility	42.63%	37.36%
Expected dividend yield	0%	0%

Note 4 - Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	*March 31, 2020*							*December 31, 2019*							*Useful*	*Weighted Average*
(in thousands)	*Gross*		*Accumulated Amortization*			*Net*		*Gross*		*Accumulated Amortization*			*Net*		*Life (in years)*	*Useful Life Remaining (in years)*
Intangible assets with finite lives:
Marketing assets	$	930	$	(550	)	$	380	$	930	$	(527	)	$	403	10.0	4.0
Non-compete agreement		270		(226	)		44		270		(222	)		48	2.0 - 5.0	2.8
Software technology		13,229		(2,618	)		10,611		13,229		(2,275	)		10,954	10.0	7.8
Customer relationships		10,070		(4,490	)		5,580		10,070		(4,106	)		5,964	6.0 - 9.0	3.6
Total intangible assets	$	24,499	$	(7,884	)	$	16,615	$	24,499	$	(7,130	)	$	17,369

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(in thousands)	*Estimated Amortization Expense*
Remaining 2020	$	2,262
2021		3,016
2022		3,016
2023		2,813
2024		1,400
Thereafter		4,108
Total estimated amortization expense	$	16,615

Note 8 - Stock-based Compensation - Assumptions Used to Estimate the Fair Value of the ESPP (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Risk-free interest rate	1.59%	2.33%
Expected life (months) (Year)	6 years	6 years
Expected volatility	42.63%	37.36%
Expected dividend yield	0.00%	0.00%

Note 11 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income from operations	$ 16,825	$ 19,448
Operating Segments [Member] \| United States Segment [Member]
Income from operations	25,089	26,310
Operating Segments [Member] \| Europe Segment [Member]
Income from operations	4,364	4,221
Operating Segments [Member] \| Corporate Unallocated and Japan Segment[Member]
Income from operations	$ (12,628)	$ (11,083)