0001437749-22-019066 | 10-Q | XBRL Viewer

Significant Accounting Policies [Text Block]

Note 2 – Recent Accounting Pronouncements

The Company did not recently adopt any accounting pronouncements that had a material impact on the Company's Consolidated Financial Statements. There are no pending accounting pronouncements that are expected to have a material impact on the Company's Consolidated Financial Statements.

Note 3 - Net Income Per Common Share

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Text Block]

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 and other stock-based 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. For the three and six months ended June 30, 2022, 220,776 and 208,840 anti-dilutive options were excluded from the calculation of diluted weighted average shares outstanding.

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

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
(in thousands, except share and per share amounts)	*2022*		*2021*		*2022*		*2021*
Net income	$	2,557	$	12,915	$	7,652	$	16,627

Basic - weighted-average shares outstanding:		27,530,739		27,735,732		27,515,583		27,600,684
Effect of dilutive securities:
Employee stock options and other		6,084		9,138		8,436		140,780
Diluted - weighted-average shares outstanding:		27,536,823		27,744,870		27,524,019		27,741,464
Net income per share:
Basic	$	0.09	$	0.47	$	0.28	$	0.60
Diluted	$	0.09	$	0.47	$	0.28	$	0.60

Note 4 - Business Combinations

6 Months Ended

Jun. 30, 2022

Business Combination Disclosure [Text Block]

Note 4 – Business Combinations

On January 22, 2021, the Company acquired all of the outstanding shares of 3D Hubs, Inc. (Hubs), for $294.1 million, consisting of $127.4 million in cash and 863,995 shares of the Company's common stock valued at $166.7 million on the closing date. The purchase agreement included additional contingent consideration of up to $52.8 million subject to the achievement of performance-based targets during fiscal 2021 and fiscal 2022. The contingent consideration consisted of up to $25.0 million in cash and up to 143,983 shares of the Company's common stock valued at $27.8 million on the closing date. The Company initially recorded a liability of $13.6 million related to the contingent consideration, which was subsequently reversed when it was determined the performance based targets would not be met in 2021 and the expectation that those targets would not be met in fiscal 2022. The reversal of the contingent consideration was recorded as a decrease in general and administrative expense in the Consolidated Statements of Comprehensive Income.

Hubs is based in Amsterdam, Netherlands and is a leading online manufacturing platform that provides customers with on-demand access to a global network of premium manufacturing partners. The acquisition enhances the Company’s value proposition by expanding the customer offerings, enabling the Company to more holistically serve its customers.

The fair value of the consideration paid for this acquisition has been allocated to the assets purchased and liabilities assumed based on their fair values as of the acquisition date, with any excess recorded as goodwill. The goodwill associated with the acquisition represents both the strategic and growth opportunities by significantly expanding the customer offering with a network of premium manufacturing partners. The goodwill related to the acquisition is not deductible for tax purposes.

The acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805, Business Combinations. The final purchase price allocation was as follows:

(in thousands)	*Acquisition*
Assets acquired:
Current assets	$	2,497
Intangible assets		30,770
Goodwill		280,925
Other long-term assets		1,139
Total assets acquired		315,331

Liabilities assumed:
Current contingent consideration		7,093
Current liabilities		5,666
Long-term contingent consideration		6,507
Long-term deferred tax liabilities		1,688
Other long-term liabilities		255
Total liabilities assumed		21,209
Net assets acquired		294,122

Cash paid		133,847
Cash acquired		(6,434	)
Net cash consideration		127,413
Equity portion of purchase price		166,709
Total purchase consideration	$	294,122

Note 5 - Goodwill and Other Intangible Assets

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Text Block]

Note 5 – Goodwill and Other Intangible Assets

The changes in the carrying amount of goodwill during the six months ended June 30, 2022 were as follows:

(in thousands)	*Six Months Ended June 30, 2022*
Balance as of the beginning of the period	$	400,610
Goodwill acquired during the period		-
Goodwill written off during the period		(630	)
Foreign currency translation adjustments		(9,626	)
Balance as of the end of the period	$	390,354

Goodwill of $0.6 million was written off as of June 30, 2022, as a result of the Company's decision to close the Japan manufacturing facility and exit the Japan market. The Japan business was in operations through the second quarter of 2022 and the assets are expected to be available for sale during the second half of 2022. Goodwill has been allocated to the acquired Hubs entities consisting of goodwill of €106.5 million in Europe and $151.3 million in the United States as of the date of the acquisition. The Euro denominated goodwill is translated at the end of each period using the current exchange rates resulting in a foreign currency translation adjustment that is recorded as a component of Other Comprehensive Income.

Intangible assets other than goodwill at June 30, 2022 and December 31, 2021 were as follows:

	*June 30, 2022*							*December 31, 2021*							*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	$	(759	)	$	171	$	930	$	(713	)	$	217	10.0	1.8
Non-compete agreement	822		(423		)	399		842		(363		)	479		2.0 - 5.0	2.5
Software technology	13,229		(5,699		)	7,530		13,229		(5,014		)	8,215		10.0	6.0
Software platform	25,777		(3,239		)	22,538		26,725		(2,262		)	24,463		12.0	10.6
Tradenames	346		(167		)	179		359		(114		)	245		3.0	1.6
Customer relationships	12,174		(8,965		)	3,209		12,252		(7,873		)	4,379		3.0 - 9.0	1.3
Total intangible assets	$	53,278	$	(19,252	)	$	34,026	$	54,337	$	(16,339	)	$	37,998

Intangible assets have been allocated to the acquired Hubs entities consisting of intangible assets of €11.6 million in Europe and $16.6 million in the United States as of the date of the acquisition. The Euro denominated intangible assets are translated at the end of each period using the current exchange rates resulting in a foreign currency translation adjustment that is recorded as a component of Other Comprehensive Income. Foreign currency losses related to intangible assets were $2.0 and $0.9 million as of June 30, 2022 and December 31, 2021, respectively. Amortization expense for intangible assets was $1.5 million for each of the three months ended June 30, 2022 and 2021, and $3.1 million and $3.0 million for the six months ended June 30, 2022 and 2021, respectively.

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

(in thousands)	*Estimated Amortization Expense*
Remaining 2022	$	3,029
2023		5,855
2024		3,706
2025		3,608
2026		3,508
Thereafter		14,320
Total estimated amortization expense	$	34,026

Note 6 - Assets Held for Sale

6 Months Ended

Jun. 30, 2022

Disclosure of Assets Held-for-sale [Text Block]

Note 6 – Assets Held for Sale

Assets are classified as held for sale and presented separately on the Consolidated Balance Sheet when all of the following criteria for a plan of sale have been met: (1) management, having the authority to approve the action, commits to a plan to sell the assets; (2) the assets are available for immediate sale, in their present condition, subject only to terms that are usual and customary for sales of such assets; (3) an active program to locate a buyer and other actions required to complete the plan to sell the assets have been initiated; (4) the sale of the assets is probable and is expected to be completed within one year; (5) the assets are being actively marketed for a price that is reasonable in relation to their current fair value; and (6) actions required to complete the plan indicate that it is unlikely that significant changes to the plan will be made or the plan will be withdrawn. The assets are then recorded at the lower of their current carrying value or the fair market value, less costs to sell.

During the first quarter of 2022, a facility the Company owns in Maple Plain, Minnesota, encompassing approximately 35,000 square feet of manufacturing and office space, met the criteria to be held for sale. The assets held for sale were $2.0 million as of June 30, 2022 and are presented on the Company's Consolidated Balance Sheet as Long-term assets held for sale. The assets held for sale had no impact on the Company’s Consolidated Statements of Operations during the three or six months ended June 30, 2022.

Note 7 - Fair Value Measurements

6 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Text Block]

Note 7 – Fair Value Measurements

Accounting Standards Codification, 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 assets and liabilities that are required to be measured or disclosed at fair value on a recurring basis include cash and cash equivalents and marketable securities. The Company’s cash consists of bank deposits. The Company determines the fair value of these investments using Level 1 inputs. The Company's marketable securities consist of short-term and long-term agency, municipal, corporate and other debt securities. Fair value for the corporate debt securities is 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).

The following table summarizes financial assets as of June 30, 2022 and December 31, 2021 measured at fair value on a recurring basis:

	*June 30, 2022*						*December 31, 2021*
(in thousands)	*Level 1*		*Level 2*		*Level 3*		*Level 1*		*Level 2*		*Level 3*
Financial Assets:
Cash	$	44,886	$	-	$	-	$	65,637	$	-	$	-
Money market mutual fund		9,780		-		-		292		-		-
Marketable securities		15,851		39,596		-		7,602		18,318		-
Total	$	70,517	$	39,596	$	-	$	73,531	$	18,318	$	-

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Note 8 - Marketable Securities

6 Months Ended

Jun. 30, 2022

Investment [Text Block]

Note 8 – Marketable Securities

The Company invests in short-term and long-term agency, municipal, corporate and other debt securities. The securities are categorized as available-for-sale and are recorded at fair value. The following table summarizes information regarding the Company’s short-term and long-term marketable securities as of June 30, 2022 and December 31, 2021:

	*June 30, 2022*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	17,893	$	-	$	(365	)	$	17,528
Corporate debt securities		12,299		-		(234	)		12,065
U.S. government agency securities		22,284		2		(355	)		21,931
Certificates of deposit/time deposits		941		-		(6	)		935
Commercial paper		2,994		-		(6	)		2,988
Total marketable securities	$	56,411	$	2	$	(966	)	$	55,447

	*December 31, 2021*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	12,549	$	-	$	(70	)	$	12,479
Corporate debt securities		9,303		-		(44	)		9,259
U.S. government agency securities		2,500		-		(12	)		2,488
Certificates of deposit/time deposits		1,687		7		-			1,694
Commercial paper		-		-		-			-
Total marketable securities	$	26,039	$	7	$	(126	)	$	25,920

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).

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 June 30, 2022 balance of available-for-sale debt securities by contractual maturity is shown in the following table at fair value. Actual maturities may differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.

	*June 30,*
(in thousands)	*2022*
Due in one year or less	$	24,379
Due after one year through five years		31,068
Total marketable securities	$	55,447

Note 9 - Inventory

6 Months Ended

Jun. 30, 2022

Inventory Disclosure [Text Block]

Note 9 – Inventory

Inventory consists primarily of raw materials, which are recorded at the lower of cost and net realizable value using the standard 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:

	*June 30,*			*December 31,*
(in thousands)	*2022*			*2021*
Total inventory	$	15,817		$	13,474
Allowance for obsolescence		(766	)		(313	)
Inventory, net of allowance	$	15,051		$	13,161

Note 10 - Stock-based Compensation

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Text Block]

Note 10 – Stock-Based Compensation

Under the Company’s 2012 Long-Term Incentive Plan, as amended (the 2012 Plan), the Company had the ability to grant stock options, stock appreciation rights (SARs), restricted stock, restricted stock units, other stock-based awards and cash incentive awards through February 23, 2022. On July 8, 2022, the board of directors approved the Proto Labs, Inc. 2022 Long-Term Incentive Plan (the 2022 Plan), which will take effect on August 29, 2022 subject to approval by the Company's shareholders at our previously noticed Special Meeting of Shareholders on August 29, 2022. No awards have been granted since February 23, 2022 or will be granted under the 2012 Plan until a new long-term incentive plan is approved by shareholders. 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 $4.0 million and $4.9 million for the three months ended June 30, 2022 and 2021, respectively, and $8.4 and $10.6 million for the six months ended June 30, 2022 and 2021, respectively.

Stock Options

The following table summarizes stock option activity during the six months ended June 30, 2022:

				*Weighted-*
				*Average*
	*Stock Options*			*Exercise Price*
Options outstanding at December 31, 2021		233,384		$	97.78
Granted		52,992			59.40
Exercised		(3,114	)		30.58
Forfeited		(34,075	)		90.61
Expired		(28,411	)		84.92
Options outstanding at June 30, 2022		220,776		$	92.28

Exercisable at June 30, 2022		113,652		$	92.57

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 of four to five years, beginning on the first anniversary of the grant date, subject to the employee’s continuing service to the Company. For the board of 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 six months ended June 30, 2022 was $27.84.

The following table provides the assumptions used in the Black-Scholes pricing model valuation of options during the six months ended June 30, 2022 and 2021:

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		1.94%		0.80% - 1.12%
Expected life (years)		6.25		6.25
Expected volatility		45.95%		45.28 - 45.35%
Expected dividend yield		0%		0%

As of June 30, 2022, there was $4.0 million of unrecognized compensation expense related to unvested stock options, which is expected to be recognized over a weighted-average period of 2.7 years.

Restricted Stock

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

The following table summarizes restricted stock activity during the six months ended June 30, 2022:

				*Weighted-*
				*Average*
				*Grant Date*
	*Restricted*			*Fair Value*
	*Stock*			*Per Share*
Restricted stock at December 31, 2021		343,782		$	111.79
Granted		44,782			59.40
Restrictions lapsed		(119,315	)		105.06
Forfeited		(32,814	)		107.48
Restricted stock at June 30, 2022		236,435		$	105.90

As of June 30, 2022, there was $18.8 million of unrecognized compensation expense related to non-vested restricted stock, which is expected to be recognized over a weighted-average period of 2.3 years.

Performance Stock

Performance stock units (PSUs) are expressed in terms of a target number of PSUs, with anywhere between 0 percent and 200 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 and certain PSUs granted in 2021 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 and 2022 and certain PSUs granted in 2021 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 six months ended June 30, 2022:

				*Weighted-*
				*Average*
				*Grant Date*
	*Performance*			*Fair Value*
	*Stock*			*Per Share*
Performance stock at December 31, 2021		16,839		$	115.56
Granted		32,620			100.33
Restrictions lapsed		-			-
Performance change		-			-
Forfeited		(3,578	)		121.79
Performance stock at June 30, 2022		45,881		$	113.25

The following table provides the assumptions used in the Monte Carlo pricing model valuation of PSUs during the six months ended June 30, 2022 and 2021:

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		1.76%		0.22%
Expected life (years)		2.87		2.87
Expected volatility		53.50%		51.40%
Expected dividend yield		0%		0%

As of June 30, 2022, there was $3.0 million of unrecognized compensation expense related to non-vested performance stock, which is expected to be recognized over a weighted-average period of 2.5 years.

Employee Stock Purchase Plan

The following table presents the assumptions used to estimate the fair value of the ESPP during the six months ended June 30, 2022 and 2021:

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		0.17 - 2.06%		0.06 - 0.12%
Expected life (months)		6.00		6.00
Expected volatility		47.05 - 53.44%		50.85 - 65.53%
Expected dividend yield		0%		0%

Note 11 - Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2022

Disclosure of Reclassification Amount [Text Block]

Note 11 – Accumulated Other Comprehensive Income (Loss)

Other comprehensive income (loss) is comprised of foreign currency translation adjustments and net unrealized gains (losses) on investments in securities. The following table presents the changes in accumulated other comprehensive income (loss) balances during the three and six months ended June 30, 2022 and 2021:

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
(in thousands)	*2022*			*2021*			*2022*			*2021*

Balance at beginning of period	$	(22,305	)	$	(10,096	)	$	(16,817	)	$	(3,420	)
Foreign currency translation adjustments
Other comprehensive income (loss) before reclassifications		(13,515	)		2,030			(18,487	)		(4,812	)
Amounts reclassified from accumulated other comprehensive loss		-			-			-			-
Net current-period other comprehensive income (loss)		(13,515	)		2,030			(18,487	)		(4,812	)
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications		(329	)		(49	)		(845	)		117
Amounts reclassified from accumulated other comprehensive loss		-			-			-			-
Net current-period other comprehensive income (loss)		(329	)		(49	)		(845	)		117
Balance at end of period	$	(36,149	)	$	(8,115	)	$	(36,149	)	$	(8,115	)

Note 12 - Income Taxes

6 Months Ended

Jun. 30, 2022

Income Tax Disclosure [Text Block]

Note 12 – 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 June 30, 2022 and 2021, the Company recorded an income tax provision of $2.6 million and $3.3 million, respectively. For the six months ended June 30, 2022 and 2021, the Company recorded an income tax provision of $5.1 million and $3.6 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 June 30, 2022 was 50.8 percent compared to 20.5 percent in the same period of the prior year. The effective tax rate increased by 30.3 percent for the three months ended June 30, 2022 when compared to the same period in 2021, primarily due to a decrease in tax benefits from the vesting of restricted stock and the exercise of stock options, as well as an increase in losses in jurisdictions, primarily Japan, that are not eligible for tax benefits due to valuation allowances. The effective income tax rate for the six months ended June 30, 2022 was 40.2 percent compared to 17.6 percent in the same period of the prior year. The effective tax rate increased by 22.6 percent for the six months ended June 30, 2022 when compared to the same period in 2021, primarily due to a decrease in tax benefits from the vesting of restricted stock and the exercise of stock options, as well as an increase in losses in jurisdictions, primarily Japan, that are not eligible for tax benefits due to valuation allowances.

The effective income tax rate for the six months ended June 30, 2022 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 $4.3 million as of June 30, 2022 and $4.4 million as of December 31, 2021, respectively, that if recognized would result in a reduction of the Company’s effective tax rate. The liabilities are classified as other long-term liabilities in the accompanying consolidated balance sheets. 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.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

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Note 13 - Segment Reporting

6 Months Ended

Jun. 30, 2022

Segment Reporting Disclosure [Text Block]

Note 13 – 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 and six months ended June 30, 2022 and 2021 were as follows:

	*Three Months Ended June 30,*				*Six Months Ended June 30,*
(in thousands)	*2022*		*2021*		*2022*		*2021*
Revenue:
United States	$	100,655	$	95,344	$	196,151	$	186,397
Europe		23,391		24,655		47,977		46,104
Japan		2,856		3,049		6,942		6,673
Total revenue	$	126,902	$	123,048	$	251,070	$	239,174

	*Three Months Ended June 30,*						*Six Months Ended June 30,*
(in thousands)	*2022*			*2021*			*2022*			*2021*
Income (Loss) from Operations:
United States	$	26,168		$	26,280		$	48,691		$	48,783
Europe		(2,249	)		5,063			(3,928	)		3,692
Corporate Unallocated and Japan		(18,718	)		(15,239	)		(31,672	)		(32,110	)
Total Income from Operations	$	5,201		$	16,104		$	13,091		$	20,365

Total long-lived assets at June 30, 2022 and December 31, 2021 were as follows:

	*June 30,*		*December 31,*
(in thousands)	*2022*		*2021*
Total long-lived assets:
United States	$	205,090	$	215,701
Europe		52,880		59,388
Japan		2,661		5,257
Total Long-lived Assets	$	260,631	$	280,346

The Company's decision to exit Japan resulted in a $1.2 million impairment of fixed assets during the three and six months ended June 30, 2022. The Japan business was in operations through the second quarter of 2022 and the fixed assets are expected to be available for sale during the second half of 2022.

Revenue by product line for the three and six months ended June 30, 2022 and 2021 were as follows:

	*Three Months Ended June 30,*				*Six Months Ended June 30,*
(in thousands)	*2022*		*2021*		*2022*		*2021*
Revenue:
Injection Molding	$	53,355	$	58,168	$	106,753	$	114,527
CNC Machining		48,222		41,592		94,320		78,295
3D Printing		19,963		18,170		39,635		35,405
Sheet Metal		5,160		4,717		9,847		9,936
Other Revenue		202		401		515		1,011
Total revenue	$	126,902	$	123,048	$	251,070	$	239,174

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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Note 3 - Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2022

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

	*Three Months Ended*				*Six Months Ended*
	*June 30,*				*June 30,*
(in thousands, except share and per share amounts)	*2022*		*2021*		*2022*		*2021*
Net income	$	2,557	$	12,915	$	7,652	$	16,627

Basic - weighted-average shares outstanding:		27,530,739		27,735,732		27,515,583		27,600,684
Effect of dilutive securities:
Employee stock options and other		6,084		9,138		8,436		140,780
Diluted - weighted-average shares outstanding:		27,536,823		27,744,870		27,524,019		27,741,464
Net income per share:
Basic	$	0.09	$	0.47	$	0.28	$	0.60
Diluted	$	0.09	$	0.47	$	0.28	$	0.60

Note 4 - Business Combinations (Tables)

6 Months Ended

Jun. 30, 2022

Acquired 3D Hubs [Member]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

(in thousands)	*Acquisition*
Assets acquired:
Current assets	$	2,497
Intangible assets		30,770
Goodwill		280,925
Other long-term assets		1,139
Total assets acquired		315,331

Liabilities assumed:
Current contingent consideration		7,093
Current liabilities		5,666
Long-term contingent consideration		6,507
Long-term deferred tax liabilities		1,688
Other long-term liabilities		255
Total liabilities assumed		21,209
Net assets acquired		294,122

Cash paid		133,847
Cash acquired		(6,434	)
Net cash consideration		127,413
Equity portion of purchase price		166,709
Total purchase consideration	$	294,122

Note 5 - Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2022

Schedule of Goodwill [Table Text Block]

(in thousands)	*Six Months Ended June 30, 2022*
Balance as of the beginning of the period	$	400,610
Goodwill acquired during the period		-
Goodwill written off during the period		(630	)
Foreign currency translation adjustments		(9,626	)
Balance as of the end of the period	$	390,354

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

	*June 30, 2022*							*December 31, 2021*							*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	$	(759	)	$	171	$	930	$	(713	)	$	217	10.0	1.8
Non-compete agreement	822		(423		)	399		842		(363		)	479		2.0 - 5.0	2.5
Software technology	13,229		(5,699		)	7,530		13,229		(5,014		)	8,215		10.0	6.0
Software platform	25,777		(3,239		)	22,538		26,725		(2,262		)	24,463		12.0	10.6
Tradenames	346		(167		)	179		359		(114		)	245		3.0	1.6
Customer relationships	12,174		(8,965		)	3,209		12,252		(7,873		)	4,379		3.0 - 9.0	1.3
Total intangible assets	$	53,278	$	(19,252	)	$	34,026	$	54,337	$	(16,339	)	$	37,998

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

(in thousands)	*Estimated Amortization Expense*
Remaining 2022	$	3,029
2023		5,855
2024		3,706
2025		3,608
2026		3,508
Thereafter		14,320
Total estimated amortization expense	$	34,026

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

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Note 7 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2022

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

	*June 30, 2022*						*December 31, 2021*
(in thousands)	*Level 1*		*Level 2*		*Level 3*		*Level 1*		*Level 2*		*Level 3*
Financial Assets:
Cash	$	44,886	$	-	$	-	$	65,637	$	-	$	-
Money market mutual fund		9,780		-		-		292		-		-
Marketable securities		15,851		39,596		-		7,602		18,318		-
Total	$	70,517	$	39,596	$	-	$	73,531	$	18,318	$	-

Note 8 - Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Debt Securities, Available-for-Sale [Table Text Block]

	*June 30, 2022*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	17,893	$	-	$	(365	)	$	17,528
Corporate debt securities		12,299		-		(234	)		12,065
U.S. government agency securities		22,284		2		(355	)		21,931
Certificates of deposit/time deposits		941		-		(6	)		935
Commercial paper		2,994		-		(6	)		2,988
Total marketable securities	$	56,411	$	2	$	(966	)	$	55,447

	*December 31, 2021*
(in thousands)	*Cost*		*Unrealized Gains*		*Unrealized Losses*			*Fair Value*
U.S. municipal securities	$	12,549	$	-	$	(70	)	$	12,479
Corporate debt securities		9,303		-		(44	)		9,259
U.S. government agency securities		2,500		-		(12	)		2,488
Certificates of deposit/time deposits		1,687		7		-			1,694
Commercial paper		-		-		-			-
Total marketable securities	$	26,039	$	7	$	(126	)	$	25,920

Investments Classified by Contractual Maturity Date [Table Text Block]

	*June 30,*
(in thousands)	*2022*
Due in one year or less	$	24,379
Due after one year through five years		31,068
Total marketable securities	$	55,447

Note 9 - Inventory (Tables)

6 Months Ended

Jun. 30, 2022

Schedule of Inventory, Current [Table Text Block]

	*June 30,*			*December 31,*
(in thousands)	*2022*			*2021*
Total inventory	$	15,817		$	13,474
Allowance for obsolescence		(766	)		(313	)
Inventory, net of allowance	$	15,051		$	13,161

Note 10 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

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

				*Weighted-*
				*Average*
	*Stock Options*			*Exercise Price*
Options outstanding at December 31, 2021		233,384		$	97.78
Granted		52,992			59.40
Exercised		(3,114	)		30.58
Forfeited		(34,075	)		90.61
Expired		(28,411	)		84.92
Options outstanding at June 30, 2022		220,776		$	92.28

Exercisable at June 30, 2022		113,652		$	92.57

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

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		1.94%		0.80% - 1.12%
Expected life (years)		6.25		6.25
Expected volatility		45.95%		45.28 - 45.35%
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, 2021		343,782		$	111.79
Granted		44,782			59.40
Restrictions lapsed		(119,315	)		105.06
Forfeited		(32,814	)		107.48
Restricted stock at June 30, 2022		236,435		$	105.90

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, 2021		16,839		$	115.56
Granted		32,620			100.33
Restrictions lapsed		-			-
Performance change		-			-
Forfeited		(3,578	)		121.79
Performance stock at June 30, 2022		45,881		$	113.25

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

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		1.76%		0.22%
Expected life (years)		2.87		2.87
Expected volatility		53.50%		51.40%
Expected dividend yield		0%		0%

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

	*Six Months Ended June 30,*
	*2022*		*2021*
Risk-free interest rate		0.17 - 2.06%		0.06 - 0.12%
Expected life (months)		6.00		6.00
Expected volatility		47.05 - 53.44%		50.85 - 65.53%
Expected dividend yield		0%		0%

Note 11 - Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2022

Comprehensive Income (Loss) [Table Text Block]

	*Three Months Ended*						*Six Months Ended*
	*June 30,*						*June 30,*
(in thousands)	*2022*			*2021*			*2022*			*2021*

Balance at beginning of period	$	(22,305	)	$	(10,096	)	$	(16,817	)	$	(3,420	)
Foreign currency translation adjustments
Other comprehensive income (loss) before reclassifications		(13,515	)		2,030			(18,487	)		(4,812	)
Amounts reclassified from accumulated other comprehensive loss		-			-			-			-
Net current-period other comprehensive income (loss)		(13,515	)		2,030			(18,487	)		(4,812	)
Net unrealized gains (losses) on investments in securities
Other comprehensive income (loss) before reclassifications		(329	)		(49	)		(845	)		117
Amounts reclassified from accumulated other comprehensive loss		-			-			-			-
Net current-period other comprehensive income (loss)		(329	)		(49	)		(845	)		117
Balance at end of period	$	(36,149	)	$	(8,115	)	$	(36,149	)	$	(8,115	)

Note 13 - Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2022

Income from Operations by Geographic Area [Table Text Block]

	*Three Months Ended June 30,*						*Six Months Ended June 30,*
(in thousands)	*2022*			*2021*			*2022*			*2021*
Income (Loss) from Operations:
United States	$	26,168		$	26,280		$	48,691		$	48,783
Europe		(2,249	)		5,063			(3,928	)		3,692
Corporate Unallocated and Japan		(18,718	)		(15,239	)		(31,672	)		(32,110	)
Total Income from Operations	$	5,201		$	16,104		$	13,091		$	20,365

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

	*June 30,*		*December 31,*
(in thousands)	*2022*		*2021*
Total long-lived assets:
United States	$	205,090	$	215,701
Europe		52,880		59,388
Japan		2,661		5,257
Total Long-lived Assets	$	260,631	$	280,346

Disaggregation of Revenue [Table Text Block]

	*Three Months Ended June 30,*				*Six Months Ended June 30,*
(in thousands)	*2022*		*2021*		*2022*		*2021*
Revenue:
Injection Molding	$	53,355	$	58,168	$	106,753	$	114,527
CNC Machining		48,222		41,592		94,320		78,295
3D Printing		19,963		18,170		39,635		35,405
Sheet Metal		5,160		4,717		9,847		9,936
Other Revenue		202		401		515		1,011
Total revenue	$	126,902	$	123,048	$	251,070	$	239,174

Operating Segments [Member]

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

	*Three Months Ended June 30,*				*Six Months Ended June 30,*
(in thousands)	*2022*		*2021*		*2022*		*2021*
Revenue:
United States	$	100,655	$	95,344	$	196,151	$	186,397
Europe		23,391		24,655		47,977		46,104
Japan		2,856		3,049		6,942		6,673
Total revenue	$	126,902	$	123,048	$	251,070	$	239,174

Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disposal Group, Operating Expense	$ 5,194	$ 0	$ 5,194	$ 0
Goodwill, Written Off			630
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| Manufacturing Facility in Japan [Member]
Disposal Group, Operating Expense	5,200		5,200
Disposal Group, Employee Severance, Operating Expense	2,200		2,200
Disposal Group, Write-down of Fixed Assets, Operating Expense	1,200		1,200
Disposal Group, Facility-related Charges, Operating Expense	900		900
Goodwill, Written Off	600		600
Disposal Group, Other Closure Related Charges, Operating Expense	$ 300		$ 300

Note 3 - Net Income Per Common Share (Details Textual) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	220,776	208,840

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				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Net income	$ 2,557	$ 5,095	$ 12,915	$ 3,712	$ 7,652	$ 16,627
Basic - weighted-average shares outstanding: (in shares)	27,530,739		27,735,732		27,515,583	27,600,684
Employee stock options and other (in shares)	6,084		9,138		8,436	140,780
Diluted - weighted-average shares outstanding: (in shares)	27,536,823		27,744,870		27,524,019	27,741,464
Basic (in dollars per share)	$ 0.09		$ 0.47		$ 0.28	$ 0.60
Diluted (in dollars per share)	$ 0.09		$ 0.47		$ 0.28	$ 0.60

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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Note 4 - Business Combinations (Details Textual) - USD ($) $ in Thousands		6 Months Ended		11 Months Ended
	Jan. 22, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ (0)	$ 127,413
Acquired 3D Hubs [Member]
Business Combination, Consideration Transferred, Total	$ 294,122
Payments to Acquire Businesses, Net of Cash Acquired, Total	$ 127,413
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	863,995
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	$ 166,709
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	52,800
Payments to Acquire Businesses, Gross	133,847
Business Combination, Contingent Consideration, Liability, Total	$ 13,600
Acquired 3D Hubs [Member] \| Cash [Member]
Payments to Acquire Businesses, Gross				$ 25,000
Acquired 3D Hubs [Member] \| Common Stock [Member] \| Maximum [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	143,983
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 27,800

Note 4 - Business Combinations - Allocation of Purchase Price for the Acquisition of Rapid (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 22, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Assets acquired:
Goodwill		$ 390,354		$ 400,610
Liabilities assumed:
Net cash consideration		$ (0)	$ 127,413
Acquired 3D Hubs [Member]
Assets acquired:
Current assets	$ 2,497
Intangible assets	30,770
Goodwill	280,925
Other long-term assets	1,139
Total assets acquired	315,331
Liabilities assumed:
Current contingent consideration	7,093
Current liabilities	5,666
Long-term contingent consideration	6,507
Long-term deferred tax liabilities	1,688
Other long-term liabilities	255
Total liabilities assumed	21,209
Net assets acquired	294,122
Payments to Acquire Businesses, Gross	133,847
Cash acquired	(6,434)
Net cash consideration	127,413
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	166,709
Total purchase consideration	$ 294,122

Note 5 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands, € in Millions			3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 22, 2021 USD ($)	Jan. 22, 2021 EUR (€)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Goodwill, Written Off					$ 630
Goodwill, Acquired During Period					0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax, Total					2,000		$ 900
Amortization of Intangible Assets			$ 1,500	$ 1,500	3,100	$ 3,000
Acquired 3D Hubs [Member] \| Europe [Member]
Goodwill, Acquired During Period \| €		€ 106.5
Acquired 3D Hubs [Member] \| UNITED STATES
Goodwill, Acquired During Period	$ 151,300
Finite-Lived Intangible Assets Acquired	$ 16,600	€ 11.6
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| Manufacturing Facility in Japan [Member]
Goodwill, Written Off			$ 600		$ 600

Note 5 - Goodwill and Other Intangible Assets - Changes in the Carrying Amount of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Goodwill	$ 400,610
Goodwill acquired during the period	0
Goodwill written off during the period	(630)
Foreign currency translation adjustments	(9,626)
Goodwill	$ 390,354

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References + Details

Note 5 - Goodwill and Other Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Gross	$ 53,278	$ 54,337
Accumulated Amortization	(19,252)	(16,339)
Net	34,026	37,998
Marketing-Related Intangible Assets [Member]
Gross	930	930
Accumulated Amortization	(759)	(713)
Net	$ 171	217
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	1 year 9 months 18 days
Noncompete Agreements [Member]
Gross	$ 822	842
Accumulated Amortization	(423)	(363)
Net	$ 399	479
Weighted average useful life remaining (Year)	2 years 6 months
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	(5,699)	(5,014)
Net	$ 7,530	8,215
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	6 years
Software Platform [Member]
Gross	$ 25,777	26,725
Accumulated Amortization	(3,239)	(2,262)
Net	$ 22,538	24,463
Useful Life (Year)	12 years
Weighted average useful life remaining (Year)	10 years 7 months 6 days
Trade Names [Member]
Gross	$ 346	359
Accumulated Amortization	(167)	(114)
Net	$ 179	245
Useful Life (Year)	3 years
Weighted average useful life remaining (Year)	1 year 7 months 6 days
Customer Relationships [Member]
Gross	$ 12,174	12,252
Accumulated Amortization	(8,965)	(7,873)
Net	$ 3,209	$ 4,379
Weighted average useful life remaining (Year)	1 year 3 months 18 days
Customer Relationships [Member] \| Minimum [Member]
Useful Life (Year)	3 years
Customer Relationships [Member] \| Maximum [Member]
Useful Life (Year)	9 years

Note 5 - Goodwill and Other Intangible Assets - Estimated Aggregated Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Remaining 2022	$ 3,029
2023	5,855
2024	3,706
2025	3,608
2026	3,508
Thereafter	14,320
Total estimated amortization expense	$ 34,026	$ 37,998

Note 6 - Assets Held for Sale (Details Textual) $ in Thousands	Jun. 30, 2022 USD ($) ft²	Dec. 31, 2021 USD ($)
Assets Held-for-sale, Not Part of Disposal Group, Total	$ 1,985	$ 0
Facility in Maple Plain, Minnesota [Member]
Area of Real Estate Property (Square Foot) \| ft²	35,000
Assets Held-for-sale, Not Part of Disposal Group, Total	$ 2,000

Note 7 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Marketable securities	$ 55,447
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Marketable securities	15,851	$ 7,602
Total	70,517	73,531
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Cash [Member]
Cash	44,886	65,637
Cash and cash equivalents	44,886	65,637
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| Money Market Funds [Member]
Cash	9,780	292
Cash and cash equivalents	9,780	292
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Marketable securities	39,596	18,318
Total	39,596	18,318
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Cash [Member]
Cash	0	0
Cash and cash equivalents	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Money Market Funds [Member]
Cash	0	0
Cash and cash equivalents	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Marketable securities	0	0
Total	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Cash [Member]
Cash	0	0
Cash and cash equivalents	0	0
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Money Market Funds [Member]
Cash	0	0
Cash and cash equivalents	$ 0	$ 0

Note 8 - Marketable Securities - Short-term and Long-term Available for Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Amortized Cost	$ 56,411
Unrealized Gains	2
Unrealized Losses	(966)
Fair Value	55,447
Amortized Cost		$ 26,039
Unrealized Gains		7
Unrealized Losses		(126)
Fair Value		25,920
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	17,893
Unrealized Gains	0
Unrealized Losses	(365)
Fair Value	17,528
Amortized Cost		12,549
Unrealized Gains		0
Unrealized Losses		(70)
Fair Value		12,479
Corporate Debt Securities [Member]
Amortized Cost	12,299
Unrealized Gains	0
Unrealized Losses	(234)
Fair Value	12,065
Amortized Cost		9,303
Unrealized Gains		0
Unrealized Losses		(44)
Fair Value		9,259
US Government Agencies Debt Securities [Member]
Amortized Cost	22,284
Unrealized Gains	2
Unrealized Losses	(355)
Fair Value	21,931
Amortized Cost		2,500
Unrealized Gains		0
Unrealized Losses		(12)
Fair Value		2,488
Bank Time Deposits [Member]
Amortized Cost	941
Unrealized Gains	0
Unrealized Losses	(6)
Fair Value	935
Amortized Cost		1,687
Unrealized Gains		7
Unrealized Losses		0
Fair Value		1,694
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Amortized Cost	2,994
Unrealized Gains	0
Unrealized Losses	(6)
Fair Value	$ 2,988
Amortized Cost		0
Unrealized Gains		0
Unrealized Losses		0
Fair Value		$ 0

Note 8 - Marketable Securities - Balance of Held-to-maturity Debt Securities by Contractual Maturity (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Due in one year or less	$ 24,379
Due after one year through five years	31,068
Total marketable securities	$ 55,447

Note 9 - Inventory - Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Total inventory	$ 15,817	$ 13,474
Allowance for obsolescence	(766)	(313)
Inventory, net of allowance	$ 15,051	$ 13,161

Note 10 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share-Based Payment Arrangement, Expense	$ 4.0	$ 4.9	$ 8.4	$ 10.6
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)			$ 27.84
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 Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)			10 years
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	4.0		$ 4.0
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 8 months 12 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	18.8		$ 18.8
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 3 months 18 days
Restricted Stock [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 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	$ 3.0		$ 3.0
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 6 months
Percentage of Target Number Capable of Being Earned and Vesting, Lower Limit	0.00%		0.00%
Percentage of Target Number Capable of Being Earned and Vesting, Upper Limit	200.00%		200.00%
Long-Term Incentive Plan 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)			10 years

Note 10 - Stock-based Compensation - Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Options outstanding (in shares) \| shares	233,384
Options outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 97.78
Granted (in shares) \| shares	52,992
Granted, weighted-average exercise price (in dollars per share) \| $ / shares	$ 59.40
Exercised (in shares) \| shares	(3,114)
Exercised, weighted-average exercise price (in dollars per share) \| $ / shares	$ 30.58
Forfeited (in shares) \| shares	(34,075)
Forfeited, weighted-average exercise price (in dollars per share) \| $ / shares	$ 90.61
Expired (in shares) \| shares	(28,411)
Expired (in dollars per share) \| $ / shares	$ 84.92
Options outstanding (in shares) \| shares	220,776
Options outstanding, weighted-average exercise price (in dollars per share) \| $ / shares	$ 92.28
Options exercisable (in shares) \| shares	113,652
Options exercisable, weighted-average exercise price (in dollars per share) \| $ / shares	$ 92.57

Note 10 - Stock-based Compensation - Assumptions Used in the Black-Scholes Option Pricing Model (Details) - Share-Based Payment Arrangement, Option [Member]	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Risk-free interest rate	1.94%
Expected life (Year)	6 years 3 months	6 years 3 months
Expected volatility	45.95%
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Risk-free interest rate		0.80%
Expected volatility		45.28%
Maximum [Member]
Risk-free interest rate		1.12%
Expected volatility		45.35%

Note 10 - Stock-based Compensation - Restricted Stock Options (Details) - Restricted Stock [Member]	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Restricted stock (in shares) \| shares	343,782
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 111.79
Granted (in shares) \| shares	44,782
Granted, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 59.40
Restrictions lapsed (in shares) \| shares	(119,315)
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 105.06
Forfeited (in shares) \| shares	(32,814)
Forfeited, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 107.48
Restricted stock (in shares) \| shares	236,435
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 105.90

Note 10 - Stock-based Compensation - Performance Stock (Details) - Performance Shares [Member]	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Performance stock (in shares) \| shares	16,839
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 115.56
Granted (in shares) \| shares	32,620
Granted, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 100.33
Restrictions lapsed (in shares) \| shares	0
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 0
Performance change (in shares) \| shares	0
Performance change, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 0
Forfeited (in shares) \| shares	(3,578)
Forfeited, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 121.79
Performance stock (in shares) \| shares	45,881
Restricted stock, weighted-average grant date fair value (in dollars per share) \| $ / shares	$ 113.25

Note 10 - Stock-based Compensation - Assumptions Used in the Valuation of Performance Stock (Details) - Performance Shares [Member]	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Risk-free interest rate	1.76%	0.22%
Expected life (Year)	2 years 10 months 13 days	2 years 10 months 13 days
Expected volatility	53.50%	51.40%
Expected dividend yield	0.00%	0.00%

Note 10 - Stock-based Compensation - Assumptions Used to Estimate the Fair Value of the ESPP (Details) - Employee Stock Purchase Plan [Member]	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Expected life (months) (Month)	6 months	6 months
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Risk-free interest rate	0.17%	0.06%
Expected volatility	47.05%	50.85%
Maximum [Member]
Risk-free interest rate	2.06%	0.12%
Expected volatility	53.44%	65.53%

Note 11 - Accumulated Other Comprehensive Income (Loss) - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance	$ 832,035	$ 813,431	$ 828,493	$ 644,356
Balance	820,698	831,977	820,698	831,977
AOCI Attributable to Parent [Member]
Balance	(22,305)	(10,096)	(16,817)	(3,420)
Balance	(36,149)	(8,115)	(36,149)	(8,115)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Other comprehensive income (loss) before reclassifications	(13,515)	2,030	(18,487)	(4,812)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	(13,515)	2,030	(18,487)	(4,812)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Other comprehensive income (loss) before reclassifications	(329)	(49)	(845)	117
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	$ (329)	$ (49)	$ (845)	$ 117

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Name Accounting Standards Codification
-Topic 235
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Income Tax Expense (Benefit), Total	$ 2,645	$ 3,326	$ 5,140	$ 3,562
Effective Income Tax Rate Reconciliation, Percent, Total	50.80%	20.50%	40.20%	17.60%
Effective Income Tax Rate Continuing Operations Increase (Decrease) During the Period	30.30%		22.60%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Unrecognized Tax Benefits, Ending Balance	$ 4,300		$ 4,300		$ 4,400

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Note 13 - Segment Reporting (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| Manufacturing Facility in Japan [Member]
Disposal Group, Write-down of Fixed Assets, Operating Expense	$ 1.2	$ 1.2

Note 13 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 126,902	$ 123,048	$ 251,070	$ 239,174
Operating Segments [Member]
Revenue	126,902	123,048	251,070	239,174
Operating Segments [Member] \| United States Segment [Member]
Revenue	100,655	95,344	196,151	186,397
Operating Segments [Member] \| Europe Segment [Member]
Revenue	23,391	24,655	47,977	46,104
Operating Segments [Member] \| Japan Segment [Member]
Revenue	$ 2,856	$ 3,049	$ 6,942	$ 6,673

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

Note 13 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income from operations	$ 5,201	$ 16,104	$ 13,091	$ 20,365
Operating Segments [Member] \| United States Segment [Member]
Income from operations	26,168	26,280	48,691	48,783
Operating Segments [Member] \| Europe Segment [Member]
Income from operations	(2,249)	5,063	(3,928)	3,692
Operating Segments [Member] \| Corporate Unallocated and Japan Segment[Member]
Income from operations	$ (18,718)	$ (15,239)	$ (31,672)	$ (32,110)

Note 13 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Long-lived assets	$ 260,631	$ 280,346
Operating Segments [Member] \| United States Segment [Member]
Long-lived assets	205,090	215,701
Operating Segments [Member] \| Europe Segment [Member]
Long-lived assets	52,880	59,388
Operating Segments [Member] \| Japan Segment [Member]
Long-lived assets	$ 2,661	$ 5,257

Note 13 - Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue	$ 126,902	$ 123,048	$ 251,070	$ 239,174
Injection Molding (Protomold) [Member]
Revenue	53,355	58,168	106,753	114,527
CNC Machining (Firstcut) [Member]
Revenue	48,222	41,592	94,320	78,295
3D Printing (Fineline) [Member]
Revenue	19,963	18,170	39,635	35,405
Sheet Metal [Member]
Revenue	5,160	4,717	9,847	9,936
Other Products [Member]
Revenue	$ 202	$ 401	$ 515	$ 1,011