Proto Labs (PRLB) 10-K 22 Feb 17 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2016	Feb. 16, 2017	Jun. 30, 2016
Document Information [Line Items]
Entity Registrant Name	Proto Labs Inc
Entity Central Index Key	1,443,669
Trading Symbol	prlb
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Entity Common Stock, Shares Outstanding (in shares)		26,527,770
Entity Public Float			$ 1.4
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 68,795	$ 47,653
Short-term marketable securities	39,477	33,201
Accounts receivable, net of allowance for doubtful accounts of $442 and $330 as of December 31, 2016 and December 31, 2015, respectively	34,060	36,125
Inventory	9,310	9,771
Prepaid expenses and other current assets	5,697	5,224
Income taxes receivable	445	6,028
Total current assets	157,784	138,002
Property and equipment, net	139,474	125,475
Goodwill	28,916	28,916
Other intangible assets, net	2,655	3,337
Long-term marketable securities	84,479	64,789
Other long-term assets	933	517
Total assets	414,241	361,036
Liabilities and shareholders' equity
Accounts payable	11,322	13,643
Accrued compensation	7,670	9,993
Accrued liabilities and other	4,435	2,626
Total current liabilities	23,427	26,262
Long-term deferred tax liabilities	7,003	4,240
Other long-term liabilities	3,978	2,889
Total liabilities	34,408	33,391
Shareholders' equity
Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and outstanding 0 shares as of December 31, 2016 and December 31, 2015, respectively
Common stock, $0.001 par value, authorized 150,000,000 shares; issued and outstanding 26,504,868 and 26,200,718 shares as of December 31, 2016 and December 31, 2015, respectively	26	26
Additional paid-in capital	213,857	198,835
Retained earnings	176,703	133,996
Accumulated other comprehensive loss	(10,753)	(5,212)
Total shareholders' equity	379,833	327,645
Total liabilities and shareholders' equity	$ 414,241	$ 361,036

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 442	$ 330
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
Preferred stock, shares outstanding (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)	26,504,868	26,200,718
Common stock, shares outstanding (in shares)	26,504,868	26,200,718

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statements of Operations:
Revenue	$ 298,055	$ 264,106	$ 209,583
Cost of revenue	131,118	109,703	81,182
Gross profit	166,937	154,403	128,401
Operating expenses
Marketing and sales	46,131	39,188	29,144
Research and development	22,388	18,350	16,607
General and administrative	36,651	29,716	22,122
Total operating expenses	105,170	87,254	67,873
Income from operations	61,767	67,149	60,528
Other income, net	2,454	712	3
Income before income taxes	64,221	67,861	60,531
Provision for income taxes	21,514	21,347	18,896
Net income	$ 42,707	$ 46,514	$ 41,635
Net income per share:
Basic (in dollars per share)	$ 1.62	$ 1.79	$ 1.62
Diluted (in dollars per share)	$ 1.61	$ 1.77	$ 1.60
Shares used to compute net income per share:
Basic (in shares)	26,365,173	26,005,858	25,692,699
Diluted (in shares)	26,564,639	26,320,284	26,100,320
Other Comprehensive Loss, net of tax
Foreign currency translation adjustments	$ (5,541)	$ (2,283)	$ (1,838)
Comprehensive income	$ 37,166	$ 44,231	$ 39,797

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - 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, 2013	25,546,107
Balance at Dec. 31, 2013	$ 26	$ 166,861	$ 45,847	$ (1,091)	$ 211,643
Common shares issued on exercise of options and other (in shares)	292,003
Common shares issued on exercise of options and other		4,820			4,820
Excess tax benefit from stock option exercises		4,470			4,470
Stock-based compensation expense		4,809			4,809
Net income			41,635		41,635
Other Comprehensive Loss, net of tax
Foreign currency translation adjustment				(1,838)	(1,838)
Comprehensive income					39,797
Balance (in shares) at Dec. 31, 2014	25,838,110
Balance at Dec. 31, 2014	$ 26	180,960	87,482	(2,929)	265,539
Other Comprehensive Loss, net of tax
Common shares issued on exercise of options and other (in shares)	292,003
Common shares issued on exercise of options and other		4,820			4,820
Excess tax benefit from stock option exercises		4,470			4,470
Stock-based compensation expense		4,809			4,809
Net income			41,635		41,635
Common shares issued on exercise of options and other (in shares)	362,608
Common shares issued on exercise of options and other		6,254			6,254
Excess tax benefit from stock option exercises		5,539			5,539
Stock-based compensation expense		6,082			6,082
Net income			46,514		46,514
Foreign currency translation adjustment				(2,283)	(2,283)
Comprehensive income					$ 44,231
Balance (in shares) at Dec. 31, 2015	26,200,718				26,200,718
Balance at Dec. 31, 2015	$ 26	198,835	133,996	(5,212)	$ 327,645
Other Comprehensive Loss, net of tax
Common shares issued on exercise of options and other (in shares)	362,608
Common shares issued on exercise of options and other		6,254			6,254
Excess tax benefit from stock option exercises		5,539			5,539
Stock-based compensation expense		6,082			6,082
Net income			46,514		46,514
Common shares issued on exercise of options and other (in shares)	304,150
Common shares issued on exercise of options and other		5,715			5,715
Excess tax benefit from stock option exercises		2,532			2,532
Stock-based compensation expense		6,775			6,775
Net income			42,707		42,707
Foreign currency translation adjustment				(5,541)	(5,541)
Comprehensive income					$ 37,166
Balance (in shares) at Dec. 31, 2016	26,504,868				26,504,868
Balance at Dec. 31, 2016	$ 26	213,857	176,703	$ (10,753)	$ 379,833
Other Comprehensive Loss, net of tax
Common shares issued on exercise of options and other (in shares)	304,150
Common shares issued on exercise of options and other		5,715			5,715
Excess tax benefit from stock option exercises		2,532			2,532
Stock-based compensation expense		$ 6,775			6,775
Net income			$ 42,707		$ 42,707

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating activities
Net income	$ 42,707	$ 46,514	$ 41,635
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,485	14,126	11,138
Stock-based compensation expense	6,775	6,082	4,809
Deferred taxes	2,780	2,837	(1,875)
Excess tax benefit from stock-based compensation	(2,532)	(5,539)	(4,470)
Loss on impairment of assets	455
Gain on acquisition		(344)
Amortization of held-to-maturity securities	1,173	1,234	1,517
Other	(1,541)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	900	(11,371)	(5,304)
Inventories	136	(2,097)	(896)
Prepaid expenses and other	(1,312)	(2,047)	107
Income taxes	8,207	(2,310)	9,373
Accounts payable	(1,116)	5,781	1,435
Accrued liabilities and other	850	5,691	(259)
Net cash provided by operating activities	74,967	58,557	57,210
Investing activities
Purchases of property and equipment	(33,616)	(44,362)	(43,507)
Cash used for acquisitions, net of cash acquired		(5,032)	(33,864)
Purchases of marketable securities	(89,315)	(66,393)	(60,186)
Proceeds from maturities of marketable securities	62,176	52,193	74,058
Net cash used in investing activities	(60,755)	(63,594)	(63,499)
Financing activities
Payments on debt		(152)	(1,054)
Acquisition-related contingent consideration	(400)	(1,400)	(1,200)
Proceeds from exercises of stock options and other	5,715	6,251	4,820
Excess tax benefit from stock-based compensation	2,532	5,539	4,470
Net cash provided by financing activities	7,847	10,238	7,036
Effect of exchange rate changes on cash and cash equivalents	(917)	(877)	(457)
Net increase in cash and cash equivalents	21,142	4,324	290
Cash and cash equivalents, beginning of period	47,653	43,329	43,039
Cash and cash equivalents, end of period	68,795	47,653	43,329
Supplemental cash flow disclosure
Cash paid for interest	1	5	19
Cash paid for taxes	$ 9,802	$ 20,330	$ 11,549

Note 1 - Nature of Business

Note 1 - Nature of Business	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Nature of Operations [Text Block]	Note 1 — Nature of Business Organization and business Proto Labs, Inc. and its subsidiaries (Proto Labs, the Company, we, us, or our) is an e-commerce driven digital manufacturer of quick-turn, on-demand 3D three (3D) 3D Name Location PL-US International LLC United States Proto Labs Ltd. United Kingdom PL Euro Services Ltd. United Kingdom PL International UK LLP United Kingdom PL International Holding UK Ltd. United Kingdom PLJ Ltd. United Kingdom Proto Labs Distribution Ltd. United Kingdom PL DE Holding GmbH Germany Proto Labs GmbH Germany Proto Labs Eschenlohe GmbH Germany PL Finland Oy Finland Proto Labs AB Sweden Proto Labs, G.K. Japan

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 2 — Summary of Significant Accounting Policies Principles of consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries , as listed within organization and business above. All intercompany accounts and transactions have been eliminated in consolidation. Comprehensive income Components of comprehensive income include net income and foreign currency translation adjustments. Comprehensive income is disclosed in the accompanying consolidated statements of comprehensive income and consolidated statements of shareholders ’ equity. Accounting estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Cash and cash equivalents Cash and cash equivalents include cash and other investments , including marketable securities, with maturities of three may Marketable securities Marketable securities include held-to-maturity debt securities recorded at amortized cost. Management determines the appropriate classification of debt securities at the time of purchase and reevaluates such designation as of each balance sheet date. Debt securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost, adjusted for amortization of premiums and accretion of discounts to maturity computed under the effective interest method. Such amortization is included in other income, net. Interest on securities classified as held to maturity is included in other income, net. The classification of marketable securities as current or non-current is dependent upon the security’s maturity date. Securities with maturities of three 320, Investments – Debt and Equity Securities, Accounts receivable and allowance for doubtful accounts Accounts receivable are reported at the invoiced amount less an allowance for doubtful accounts. As of each balance sheet date, the Company evaluates its accounts receivable and establishes an allowance for doubtful accounts based on a combination of specific customer circumstances and credit conditions taking into account the history of write-offs and collections. A receivable is considered past due if payment has not been received within the period agreed upon in the invoice. Accounts receivable are written off after all collection efforts have been exhausted. Recoveries of trade receivables previously written off are recorded when received. Inventory Inventory consists primarily of raw materials, which are recorded at the lower of co st or market, using the average cost method, which approximates first first Property, equipment and leasehold improvements Property, equipment and leasehold improvements are stated at cost. Major improvements that substantially extend an asset ’s useful life are capitalized. Repairs, maintenance and minor improvements are charged to operations as incurred. Depreciation, including amortization of leasehold improvements and assets recorded under capital leases, is calculated using the straight-line method over the estimated useful lives of the individual assets and ranges from 3 39 3 15 3 7 3 5 39 10 39 In August 2015 , the Company adjusted the useful lives of its primary production equipment based on experience and condition of current equipment. This change in accounting estimate was accounted for prospectively, and therefore had no effect on property and equipment, net as previously reported. This change was not material. Goodwill The Company recognizes goodwill in accordance with ASC 350, Intangibles — Goodwill and Other fourth may During the fourth 2016, December 31 October 1. December 31, 2015 October 1, 2016. Other Intangible Assets Other intangible assets include internally developed software, customer relationships and other intangible assets acquired from an independent party. Other intangible assets with a definite life are amortized over a period ranging from two 10 may generated by the asset. The amount of the impairment loss recorded is calculated by the excess of the asset’s carrying value over its fair value. Accounting for long-lived assets The Company periodically reviews the carrying amount of its property, equipment and leasehold improvements to determine if circumstances exist indicating an impairment or if depreciation periods should be modified. If facts or circumstances support the possibility of impairment, the Company will prepare a projection of the undiscounted future cash flows of the specific assets to determine if the assets are recoverable. If impairment exists based on these projections, an adjustment will be made to reduce the carrying amount of the specific assets to fair value. Revenue recognition The Company recognizes revenue when it is realized or realizable and earned when all of the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the buyer is fixed or determinable and collectability is reasonably assured. Revenue is recognized upon transfer of title and risk of loss, which is generally upon the shipment of parts in our Injection Molding, CNC Machining and 3D Income taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes 740). ASC 740 ’s financial statements by requiring that individual tax positions are recorded only when they meet a more-likely-than-not criterion. Additionally, ASC 740 Stock-based compensation The Company accounts for stock-based compensation in accordance with ASC 718, Compensation—Stock Compensation 718). 718, In determining the compensation cost of the options granted, the fair value of options granted has been estimated on the date of grant using the Black-Scholes option-pricing model. Advertising costs Advertising is expensed as incurred and was approximately $10.5 $10.0 $8.5 December 31, 2016, 2015 2014, Research and development Research and development expenses consist primarily of personnel and outside service costs related to the development of new processes and product lines, enhancement of existing product lines, quality assurance and testing. The Company follows ASC 350 40, Internal - Use Softwar e December 31, 2016, 2015 2014, no $22.4 $18.4 $16.6 December 31, 2016, 2015 2014, Foreign currency translation/transactions The Company translated the balance sheets of its foreign subsidiaries at period-end exchange rates and the income statement at the average exchange rates in effect throughout the period. The Company has recorded the translation adjustment as a separate component of con solidated shareholders’ equity. Foreign currency transaction gains and losses are recognized in the consolidated statements of comprehensive income. Recent accounting pronouncements In May 2014, 2014 09, Revenue from Contracts with Customers one two On July 9, 2015, 2014 09 one December 15, 2017 third 10 In February 2016, 2016 02, Leases December 15, 2018 In March 2016, 2016 09, Employee Share-Based Payment Accounting December 15, 2016 January 1, 2017. In August 2016, 2016 15, Statement of Cash Flows December 15, 2017

Note 3 - Net Income Per Common

Note 3 - Net Income Per Common Share	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 3 – Net I ncome P er C ommon S hare 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 the 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. The following table presents the calculation of net income per basic and diluted share attributable to common shareholders: Year Ended December 31, (in thousands, except share and per share amounts) 2016 2015 2014 Net Income $ 42,707 $ 46,514 $ 41,635 Basic - weighted-average shares outstanding: 26,365,173 26,005,858 25,692,699 Effect of dilutive securities: Employee stock options and other 199,466 314,426 407,621 Diluted - weighted-average shares outstanding: 26,564,639 26,320,284 26,100,320 Net income per share attributable to common shareholders: Basic $ 1.62 $ 1.79 $ 1.62 Diluted $ 1.61 $ 1.77 $ 1.60

Note 4 - Business Combinations

Note 4 - Business Combinations	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 4 Business Combinations On October 1, 2015 , the Company acquired certain assets, including shares of select subsidiaries, of Alphaform AG (Alphaform) through insolvency proceedings administered through the Insolvency Court of Munich, Germany. Included in the acquisition were select assets of Alphaform AG and Alphaform Claho GmbH and shares of Alphaform RPI Oy and Alphaform Ltd., for $5.0 December 2016, Alphaform wa s a leading service bureau headquartered in Feldkirchen (Munich), Germany and also had locations in Eschenlohe, Germany; Rusko, Finland and Reading, UK. Alphaform produces high-quality parts using stereolithography (SL), selective laser sintering (SLS) and direct metal laser sintering (DMLS) technologies as well as injection molding capabilities and other production processes. The revenue associated with these processes is reported under the 3D second 2016, The results of Alphaform since the date of acquisition and pro forma disclosures of the consolidated results of the Company with the full year effects of Alphaform have not been separately presented since the impact to the Company's results of operations was not material. The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805. $0.3 December 31, 2015. (in thousands) Assets acquired: Current assets $ 2,766 Other long-term assets 3,876 Total assets acquired 6,642 Liabilities assumed: Current liabilities 1,266 Total liabilities assumed 1,266 Net assets acquired $ 5,376 Cash paid $ 5,570 Cash acquired (538 ) Total purchase consideration $ 5,032 Gain recognized on bargain purchase $ 344 On April 23, 2014, 100% $33.9 $15.5 the Agreement) were purchased in a private transaction exempt from registration under the Securities Act of 1933 $3.0 2014 December 31, 2016, $3.0 December 31, 2016 FineLine was based in Raleigh, North Carolina and was a leading producer of parts using additive manufacturing technologies, often times referred to as 3D . Consistent with the provisions of ASC 805, Business Combinations 805), $3.0 $36.9 3 The fair value of the consideration paid for this acquisition was allocated to the assets purchased and liabilities assumed based on their estimated fair values as of the acquisition date, with any excess recorded as goodwill. The goodwill associated with the acquisition is deductible for tax purposes and represents the strategic and growth opportunities from strengthening the Company ’s portfolio of rapid prototyping product offerings. The addition of additive manufacturing expands Proto Labs’ products to address a wider spectrum of needs for the product developer and engineer. From concept models, to form and fit testing, to functional testing and short-run production, the acquisition of FineLine allows the Company to offer a broader range of quick-turn, on-demand custom parts with speed, reliability and consistency. The results of FineLine since the date of acquisition and pro forma disclosures of the consolidated results of the Company with the full year effects of FineLine have not been separately presented since the impact to the Company's results of operations was not material. The FineLine acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805. (in thousands) Assets acquired: Current assets $ 1,248 Intangible assets 4,580 Goodwill 28,916 Other long-term assets 3,849 Total assets acquired 38,593 Liabilities assumed: Current liabilities 1,729 Total liabilities assumed 1,729 Net assets acquired 36,864 Cash paid 34,468 Cash acquired (604 ) Net cash consideration 33,864 Contingent consideration 3,000 Total purchase consideration $ 36,864

Note 5 - Goodwill and Other Int

Note 5 - Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 5 – Goodwill and Other Intangible Assets The changes in the carrying amount of goodwill for the years ended December 31, 2016 2015 (in thousands) Dec. 31, 2014 Goodwill acquired during 2015 2015 Other Dec. 31, 2015 Goodwill acquired during 2016 2016 Other Dec. 31, 2016 United States $ 28,916 $ - $ - $ 28,916 $ - $ (4,869 ) $ 24,047 Europe - - - - - 4,239 4,239 Other - - - - - 630 630 Total goodwill $ 28,916 $ - $ - $ 28,916 $ - $ - $ 28,916 As described in Note 17 fourth 2016, three fourth 2016, Intangible assets other than goodwill for the years ended December 31, 2016 2015 Year Ended December 31, 2016 Year Ended December 31, 2015 Weighted (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Useful Life (in years) Average Life Remaining (in years) Intangible Assets with finite lives: Marketing assets $ 930 $ (248 ) $ 682 $ 930 $ (155 ) $ 775 10.0 7.3 Non-compete agreement 190 (190 ) - 190 (158 ) $ 32 2.0 0 Trade secrets 250 (133 ) 117 250 (83 ) $ 167 5.0 2.3 Internally developed software 680 (604 ) 76 680 (378 ) $ 302 3.0 0.3 Customer relationships 2,530 (750 ) 1,780 2,530 (469 ) $ 2,061 9.0 6.3 Total intangible assets $ 4,580 $ (1,925 ) $ 2,655 $ 4,580 $ (1,243 ) $ 3,337 Amortization expense for intangible assets was $0.7 December 31, 2016 2015, $0.5 December 31, 2014. Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets is as follows: (in thousands) Estimated Amortization Expense 2017 $ 500 2018 424 2019 391 2020 374 2021 374 Thereafter 592 Total estimated amortization expense $ 2,655

Note 6 - Fair Value Measurement

Note 6 - Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 6 – Fair V alue M easurements ASC 820, Fair Value Measuremen 820), 820 three may Level 1 —Quoted prices in active markets for identical assets or liabilities. Level 2 —Observable inputs other than Level 1 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 equivalents measured at fair value as of December 31, 2016 2015, The following tables summarizes financial assets as of December 31, 2016 2015 December 31, 2016 December 31, 2015 (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents Money market mutual funds $ 11,771 $ - $ - $ 11,896 $ - $ - Total $ 11,771 $ - $ - $ 11,896 $ - $ -

Note 7 - Marketable Securities

Note 7 - Marketable Securities	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Investment [Text Block]	Note 7 – Marketable Securities The Company invests in short-term and long-term agency, municipal, corporate , commercial paper and other debt securities. The securities are categorized as held-to-maturity and are recorded at amortized cost. Categorization as held-to-maturity is based on the Company’s ability and intent to hold these securities to maturity. Information regarding the Company’s short-term and long-term marketable securities as of December 31, 2016 2015 December 31, 2016 (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. government agency securities $ 31,706 $ 1 $ (141 ) $ 31,566 Corporate debt securities 38,490 2 (147 ) 38,345 U.S. municipal securities 46,578 1 (187 ) 46,392 Certificates of deposit/time deposits 7,182 12 (22 ) 7,172 Total marketable securities $ 123,956 $ 16 $ (497 ) $ 123,475 December 31, 2015 (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. government agency securities $ 26,784 $ 2 $ (99 ) $ 26,687 Corporate debt securities 28,133 - (114 ) 28,019 Commercial paper 1,497 - (2 ) 1,495 U.S. municipal securities 35,667 8 (56 ) 35,619 Certificates of deposit/time deposits 5,909 2 (11 ) 5,900 Total marketable securities $ 97,990 $ 12 $ (282 ) $ 97,720 Fair values for the corporate debt securities are primarily determined based on quoted market prices (Level 1). U.S. government agency securities and certificates of deposit are primarily determined using dealer quotes or quoted market prices for similar securities (Level 2). The Company tests for other than temporary losses on a quarterly basis and has considered the unrealized losses indicated above to be temporary in nature. The investment policy adopted by the Company dictates that only investments in quality, highly rated debt securities are permitted. Those unrealized losses displayed above are the result of macroeconomic factors and are indicative of neither the quality of the underlying security nor the issuer’s ability to pay its debt. The Company intends, and has the ability, to hold the investments to maturity and recover the full principal. 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 December 31, 2016 may may December 31, 2016 Due in one year or less $ 39,477 Due after one year through five years 84,479 Total marketable securities $ 123,956

Note 8 - Property and Equipment

Note 8 - Property and Equipment	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	Note 8 – Property and Equipment Property and equipment consists of the following: December 31, (in thousands) 2016 2015 Land $ 8,805 $ 8,301 Buildings and improvements 48,467 37,297 Machinery and equipment 114,729 103,205 Computer hardware and software 15,053 13,273 Leasehold improvements 6,688 3,404 Construction in progress 3,491 6,712 Total 197,233 172,192 Accumulated depreciation and amortization (57,759 ) (46,717 ) Property and equipment, net $ 139,474 $ 125,475 Depreciation expense for the years ended December 31, 2016, 2015 2014 $16.8 $13.4 $10.6

Note 9 - Inventory

Note 9 - Inventory	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 9 – 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 first The Company ’s inventory consists of the following: December 31, (in thousands) 2016 2015 Raw materials $ 8,057 $ 8,589 Work in process 1,531 1,529 Total inventory 9,588 10,118 Allowance for obsolescence (278 ) (347 ) Inventory, net of allowance $ 9,310 $ 9,771

Note 10 - Financing Obligations

Note 10 - Financing Obligations	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Debt Disclosure [Text Block]	Note 10 – Financing Obligations The Company has no December 31, 2016 2015.

Note 11 - Employee Benefit Plan

Note 11 - Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	Note 11 – Employee Benefit Plans The Company maintains a 401(k) in the United States. Under the plan, a full-time or regular part-time (over 20 three may 50 may may $1.6 $1.2 $0.8 December 31, 2016, 2015 2014, The Company also sponsors a defined contribution retirement plan that covers the employees in the United Kingdom. Total employer contributions were approximately $0.2 $0.2 $0.1 December 31, 2016, 2015 2014,

Note 12 - Stock-based Compensat

Note 12 - Stock-based Compensation	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Note 12 – Stock-Based Compensation The Company has two 2000 (2000 2012 (2012 2012 February 21, 2012, 2000 2012 2000 2012 2012 ten may 2012 may The Company ’s 2012 15 six 85 first 718 Employees purchased 40,279 31,905 $48.38 $53.64 2016 2015, December 31, 2016, 1,285,314 The Company determines its stock-based compensation in accordance with ASC 718, Determining the appropriate fair value model and calculating the fair value of stock option gran ts requires the input of subjective assumptions. The Company uses the Black-Scholes option pricing model to value its stock option awards. Stock-based compensation expense is calculated using the Company’s best estimates, which involve inherent uncertainties and the application of management’s judgment. Significant estimates include its expected term, stock price volatility and forfeiture rates. The expected term represents the weighted average period that the Company ’s stock options are expected to be outstanding. The expected term is based on the observed and expected time to post-vesting exercise of options by employees and non-employee directors and considers the impact of post-vesting award forfeitures. Prior to its IPO, the Company estimated the fair value of its common stock using the assistance of an independent third zero T he following table summarizes stock-based compensation expense for the years ended December 31, 2016, 2015 2014, Year Ended December 31, (in thousands) 2016 2015 2014 Stock options and other $ 6,177 $ 5,580 $ 4,386 Employee stock purchase plan 598 502 423 Total stock-based compensation expense $ 6,775 $ 6,082 $ 4,809 Cost of revenue $ 691 $ 513 $ 386 Operating expenses: Marketing and sales 977 1,074 927 Research and development 1,396 1,285 1,048 General and administrative 3,711 3,210 2,448 Total stock-based compensation expense $ 6,775 $ 6,082 $ 4,809 Income tax benefits (2,042 ) (1,859 ) (1,524 ) Total stock-based compensation expense, net of tax $ 4,733 $ 4,223 $ 3,285 Stock Options The following table provides the assumptions used in the Black-Scholes option pricing model for the years ended December 31, 2016, 2015 2014: Year Ended December 31, 2016 2015 2014 Risk-free interest rate 1.53 - 2.68% 1.69 - 1.77% 0.43 - 2.14% Expected life (years) 6.50 5.50 - 6.50 2.00 - 6.50 Expected volatility 44.38 - 45.93% 46.80 - 47.23% 47.29 - 49.30% Expected dividend yield 0% 0% 0% Weighted average grant date fair value $26.61 $32.42 $32.65 The following table summarizes stock option activity and the weighted average exercise price for the years ended December 31, 2016, 2015 2014: Weighted- Average Stock Options Exercise Price Options outstanding at January 1, 2014 1,143,250 $ 19.03 Granted 116,050 72.17 Exercised (253,544 ) 13.77 Cancelled (6,769 ) 26.23 Options outstanding at December 31, 2014 998,987 26.49 Granted 110,335 67.36 Exercised (316,761 ) 14.36 Cancelled (26,519 ) 51.72 Options outstanding at December 31, 2015 766,042 36.52 Granted 117,480 57.99 Exercised (226,164 ) 16.65 Cancelled (87,719 ) 61.41 Options outstanding at December 31, 2016 569,639 $ 45.00 Exercisable at December 31, 2016 320,973 $ 34.65 The outstanding options generally have a term of 10 that have been granted become exercisable ratably over the vesting period, which is generally a five first first The total intrinsic value of options exercised during the years ended December 31, 2016, 2015 2014, $11.1 $18.6 $16.3 For options outstanding at December 31, 2016, 6.0 $7.4 December 31, 2016, 4.6 $6.8 The following table summarizes information about stock options outstanding at December 31, 2016: Options Outstanding, Vested and Expected to Vest Options Exercisable Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price ($) Number Exercisable Weighted Average Exercise Price ($) $3.67 to $7.85 29,491 1.72 $ 4.98 29,491 $ 4.98 $7.86 74,100 3.87 7.86 74,100 7.86 $7.87 to $31.43 102,188 5.09 27.62 80,409 26.82 $31.44 to $47.15 56,428 6.08 44.05 24,936 41.95 $47.16 to $66.87 176,743 6.85 57.89 68,116 58.47 $66.88 to $78.59 130,689 7.62 71.64 43,921 73.01 The fair value of share-based payment transactions is recognized in the consolidated statements of comprehensive income. As of December 31, 2016, $5.3 3.0 $3.6 $2.8 $3.2 December 31, 2016, 2015 2014, Restricted Stock The 2012 Restricted stock awards are share settled and restrictions lapse ratably over the vesting period, which is generally a five first first The following table summarizes restricted stock activity for the years ended December 31, 2016 2015: Weighted- Average Grant Date Restricted Fair Value Stock Awards Per Share Restricted stock at January 1, 2014 - $ - Granted 77,647 69.18 Restrictions lapsed (798 ) 62.68 Forfeited (275 ) 62.68 Restricted stock at December 31, 2014 76,574 69.27 Granted 68,580 68.89 Restrictions lapsed (16,863 ) 69.25 Forfeited (3,898 ) 72.14 Restricted stock at December 31, 2015 124,393 68.97 Granted 161,555 59.37 Restrictions lapsed (41,415 ) 67.78 Forfeited (29,428 ) 63.23 Restricted stock at December 31, 2016 215,105 $ 62.78 As of December 31, 201 6, $11.0 3.7 Employee Stock Purchase Plan The following table presents the assumptions used to estimate the fair value of the ESPP during the years ended December 31, 2016, 2015 2014: Year ended December 31, 2016 2015 2014 Risk-free interest rate 0.56 - 0.59% 0.08 - 0.39% 0.01 - 0.11% Expected life (months) 6.00 6.00 6.00 Expected volatility 39.51 - 49.13% 29.41 - 37.64% 37.64 - 39.80% Expected dividend yield 0% 0% 0%

Note 13 - Commitments

Note 13 - Commitments	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	Note 1 3 – Commitments The Company leases property from third two July 2017 May 2018. 2017 2023. April 2023. 2017 2022. Future minimum commitments under non-cancelable leases at December 31, 2016, Operating Leases (in thousands) Years Ending December 31, 2017 $ 3,531 2018 2,945 2019 1,960 2020 1,644 2021 1,623 After 2021 2,148 Total future minimum lease payments $ 13,851 Rental expense was approximately $3.6 $1.4 $1.0 December 31, 2016, 2015 2014,

Note 14 - Accumulated Other Com

Note 14 - Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Disclosure of Reclassification Amount [Text Block]	Note 1 4 – Accumulated Other Comprehensive Loss Other comprehensive loss is comprised entirely of foreign currency translation adjustments. The following table presents the changes in accumulated other comprehensive loss balances for the years ending December 31, 2016, 2015 2014, Year Ended December 31, (in thousands) 2016 2015 2014 Foreign currency translation adjustments Balance at beginning of period $ (5,212 ) $ (2,929 ) $ (1,091 ) Other comprehensive loss before reclassifications (5,541 ) (2,283 ) (1,838 ) Amounts reclassified from accumulated other comprehensive income (loss) - - - Net current-period other comprehensive loss (5,541 ) (2,283 ) (1,838 ) Balance at end of period $ (10,753 ) $ (5,212 ) $ (2,929 )

Note 15 - Income Taxes

Note 15 - Income Taxes	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 1 5 – 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 years ended December 31, 2016, 2015 2014, $21.5 $21.3 $18.9 December 31, 2016, 2015 2014 33.4 31.5 31.2 The provision for income taxes is based on income before income taxes reported for financial statement purposes. The components of income before income taxes are as follows: Year Ended December 31, (in thousands) 2016 2015 2014 Domestic $ 59,232 $ 59,421 $ 51,052 Foreign 4,989 8,440 9,479 Total $ 64,221 $ 67,861 $ 60,531 Significant components of the provision for income taxes for the following periods are as follows: Year Ended December 31, (in thousands) 2016 2015 2014 Current: Federal $ 15,119 $ 15,845 $ 17,413 State 1,091 1,074 1,185 Foreign 2,439 1,591 2,149 Deferred Federal 2,758 2,798 (1,821 ) State 75 (38 ) (17 ) Foreign (1,960 ) 294 130 Valuation Allowance 1,992 (217 ) (143 ) Total $ 21,514 $ 21,347 $ 18,896 A reconciliation of the federal statutory income tax rate to the effective tax rate is as follows: Year Ended December 31, 2016 2015 2014 Federal tax statutory rate 35.0 % 35.0 % 35.0 % State tax (net of federal benefit) 0.6 0.5 0.5 Qualified subsidiary election (0.8 ) 0.6 0.2 Valuation allowance against deferred tax assets 3.1 (0.3 ) (0.2 ) Research and development credit (2.2 ) (2.9 ) (0.8 ) Foreign rate differential (2.8 ) (1.8 ) (2.1 ) Tax reserves 1.4 1.5 0.4 Domestic manufacturing deduction (1.8 ) (1.4 ) (2.1 ) Miscellaneous 0.9 0.3 0.3 Total 33.4 % 31.5 % 31.2 % Significant components of deferred tax assets and liabilities are as follows: December 31, (in thousands) 2016 2015 Deferred tax assets: Accrued expenses $ 857 $ 628 Warrants and stock options 3,226 2,828 Intangibles 612 499 Inventories 169 177 Other assets 983 856 Net operating loss 4,333 2,409 Less valuation allowance (4,559 ) (2,625 ) Total deferred tax assets 5,621 4,772 Deferred tax liabilities: Depreciation (10,860 ) (7,945 ) Goodwill (1,764 ) (1,067 ) Total deferred tax liabilities (12,624 ) (9,012 ) Net deferred tax liability $ (7,003 ) $ (4,240 ) The Company has recorded no December 31, 2016. December 31, 2016, $26.6 As of December 31, 2016, 13.4 ten 80 may €1 50% €1 2018 2026. The Company establishes valuation allowances for deferred tax assets when, after consideration of all positive and negative evidence, it is considered more-likely-than-not that a portion of the deferred tax assets will not be realized. The Company's valuation allowances of $4.6 $2.6 December 31, 2016 2015, 2016. The Company files a U.S. federal income tax return and income tax returns in various states and foreign jurisdictions. With a few exceptions, the Company is no longer subject to U.S. federal, state, or foreign income tax examinations by tax authorities for years before 201 2. The Company has liabilities related to unrecognized tax benefits totaling $3.8 $2.8 December 31, 2016 2015, twelve December 31, 2016, 2015 2014. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: December 31, 2016 2015 Balance at beginning of period $ 2,769 $ 1,295 Additions for tax positions of current year 1,077 919 Additions for tax positions of prior years 170 555 Decrease related to expiration of statutes of limitations (220 ) - Balance at period end $ 3,796 $ 2,769

Note 16 - Litigation

Note 16 - Litigation	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Legal Matters and Contingencies [Text Block]	Note 1 6 – Litigation From time to time, the Company may Although the results of litigation and claims cannot be predicted with certainty, the Company does not believe it is a party to any litigation the outcome of which, if determined adversely, would individually or in the aggregate be reasonably expected to have a material adverse effect on its business.

Note 17 - Segment Reporting

Note 17 - Segment Reporting	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 17 – Segment Reporting The Company ’s reportable segments are based on the internal reporting used by the Company’s CEO, who is the chief operating decision maker (CODM), to assess operating performance and make decisions about the allocation of resources. Beginning in the fourth 2016, Revenue in the United States and Europe is derived from Injection Molding, CNC Machining and 3D Japan is derived from Injection Molding and CNC Machining 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 customer parts. 3D 3D The accounting policies of the reportable segments are the same as those described in the Summary of Significant Accounting Policies note. 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 are as follows: Year Ended December 31, (in thousands) 2016 2015 2014 Revenue: United States $ 223,930 $ 208,018 $ 165,117 Europe 63,365 47,433 37,491 Japan 10,760 8,655 6,975 Total revenue $ 298,055 $ 264,106 $ 209,583 Year Ended December 31, (in thousands) 2016 2015 2014 Income from Operations: United States $ 89,308 $ 86,450 $ 74,445 Europe 11,657 13,304 14,734 Corporate Unallocated and Japan (39,198 ) (32,605 ) (28,651 ) Total income from operations $ 61,767 $ 67,149 $ 60,528 Total long-lived assets, expenditures for additions to long-lived assets and depreciation and amortization expense are as follows: December 31, December 31, December 31, (in thousands) 2016 2015 2014 Long-lived assets: United States $ 108,650 $ 98,633 $ 76,923 Europe 23,199 23,636 12,512 Japan 7,625 3,206 2,191 Total long-lived assets $ 139,474 $ 125,475 $ 91,626 Year Ended December 31, (in thousands) 2016 2015 2014 Expenditures for additions to long-lived United States $ 21,190 $ 32,560 $ 33,480 Europe 5,954 10,396 9,520 Japan 6,472 1,406 507 Total expenditures for additions to long-lived assets $ 33,616 $ 44,362 $ 43,507 Year Ended December 31, (in thousands) 2016 2015 2014 Depreciation and Amortization: United States $ 12,533 $ 11,596 $ 9,233 Europe 3,386 2,132 1,530 Japan 1,566 398 375 Total depreciation and amortization $ 17,485 $ 14,126 $ 11,138 The Company ’s revenue is derived primarily from its Injection Molding, CNC Machining, and 3D Year Ended December 31, (in thousands) 2016 2015 2014 Revenue: Injection Molding $ 175,974 $ 163,387 $ 140,282 CNC Machining 81,407 74,368 59,914 3D Printing 37,847 25,132 9,387 Other Product 2,827 1,219 - Total revenue $ 298,055 $ 264,106 $ 209,583

Note 18 - Subsequent Events

Note 18 - Subsequent Events	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Subsequent Events [Text Block]	Note 18 – Subsequent Events On February 9, 2017, ’s common stock from time to time on the open market or in privately negotiated purchases, at an aggregate purchase price of up to $50 December 31, 2021.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Principles of consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries , as listed within organization and business above. All intercompany accounts and transactions have been eliminated in consolidation.
Comprehensive Income, Policy [Policy Text Block]	Comprehensive income Components of comprehensive income include net income and foreign currency translation adjustments. Comprehensive income is disclosed in the accompanying consolidated statements of comprehensive income and consolidated statements of shareholders ’ equity.
Use of Estimates, Policy [Policy Text Block]	Accounting estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosures at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and cash equivalents Cash and cash equivalents include cash and other investments , including marketable securities, with maturities of three may
Marketable Securities, Policy [Policy Text Block]	Marketable securities Marketable securities include held-to-maturity debt securities recorded at amortized cost. Management determines the appropriate classification of debt securities at the time of purchase and reevaluates such designation as of each balance sheet date. Debt securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are stated at amortized cost, adjusted for amortization of premiums and accretion of discounts to maturity computed under the effective interest method. Such amortization is included in other income, net. Interest on securities classified as held to maturity is included in other income, net. The classification of marketable securities as current or non-current is dependent upon the security’s maturity date. Securities with maturities of three 320, Investments – Debt and Equity Securities,
Trade and Other Accounts Receivable, Policy [Policy Text Block]	Accounts receivable and allowance for doubtful accounts Accounts receivable are reported at the invoiced amount less an allowance for doubtful accounts. As of each balance sheet date, the Company evaluates its accounts receivable and establishes an allowance for doubtful accounts based on a combination of specific customer circumstances and credit conditions taking into account the history of write-offs and collections. A receivable is considered past due if payment has not been received within the period agreed upon in the invoice. Accounts receivable are written off after all collection efforts have been exhausted. Recoveries of trade receivables previously written off are recorded when received.
Inventory, Policy [Policy Text Block]	Inventory Inventory consists primarily of raw materials, which are recorded at the lower of co st or market, using the average cost method, which approximates first first
Property, Plant and Equipment, Policy [Policy Text Block]	Property, equipment and leasehold improvements Property, equipment and leasehold improvements are stated at cost. Major improvements that substantially extend an asset ’s useful life are capitalized. Repairs, maintenance and minor improvements are charged to operations as incurred. Depreciation, including amortization of leasehold improvements and assets recorded under capital leases, is calculated using the straight-line method over the estimated useful lives of the individual assets and ranges from 3 39 3 15 3 7 3 5 39 10 39 In August 2015 , the Company adjusted the useful lives of its primary production equipment based on experience and condition of current equipment. This change in accounting estimate was accounted for prospectively, and therefore had no effect on property and equipment, net as previously reported. This change was not material.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill The Company recognizes goodwill in accordance with ASC 350, Intangibles — Goodwill and Other fourth may During the fourth 2016, December 31 October 1. December 31, 2015 October 1, 2016.
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]	Other Intangible Assets Other intangible assets include internally developed software, customer relationships and other intangible assets acquired from an independent party. Other intangible assets with a definite life are amortized over a period ranging from two 10 may generated by the asset. The amount of the impairment loss recorded is calculated by the excess of the asset’s carrying value over its fair value.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Accounting for long-lived assets The Company periodically reviews the carrying amount of its property, equipment and leasehold improvements to determine if circumstances exist indicating an impairment or if depreciation periods should be modified. If facts or circumstances support the possibility of impairment, the Company will prepare a projection of the undiscounted future cash flows of the specific assets to determine if the assets are recoverable. If impairment exists based on these projections, an adjustment will be made to reduce the carrying amount of the specific assets to fair value.
Revenue Recognition, Policy [Policy Text Block]	Revenue recognition The Company recognizes revenue when it is realized or realizable and earned when all of the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the buyer is fixed or determinable and collectability is reasonably assured. Revenue is recognized upon transfer of title and risk of loss, which is generally upon the shipment of parts in our Injection Molding, CNC Machining and 3D
Income Tax, Policy [Policy Text Block]	Income taxes The Company accounts for income taxes in accordance with ASC 740, Income Taxes 740). ASC 740 ’s financial statements by requiring that individual tax positions are recorded only when they meet a more-likely-than-not criterion. Additionally, ASC 740
Compensation Related Costs, Policy [Policy Text Block]	tock-based compensation The Company accounts for stock-based compensation in accordance with ASC 718, Compensation—Stock Compensation 718). 718, In determining the compensation cost of the options granted, the fair value of options granted has been estimated on the date of grant using the Black-Scholes option-pricing model.
Advertising Costs, Policy [Policy Text Block]	Advertising costs Advertising is expensed as incurred and was approximately $10.5 $10.0 $8.5 December 31, 2016, 2015 2014,
Research and Development Expense, Policy [Policy Text Block]	Research and development Research and development expenses consist primarily of personnel and outside service costs related to the development of new processes and product lines, enhancement of existing product lines, quality assurance and testing. The Company follows ASC 350 40, Internal - Use Softwar e December 31, 2016, 2015 2014, $22.4 $18.4 $16.6 December 31, 2016, 2015 2014,
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign currency translation/transactions The Company translated the balance sheets of its foreign subsidiaries at period-end exchange rates and the income statement at the average exchange rates in effect throughout the period. The Company has recorded the translation adjustment as a separate component of con solidated shareholders’ equity. Foreign currency transaction gains and losses are recognized in the consolidated statements of comprehensive income.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent accounting pronouncements In May 2014, 2014 09, Revenue from Contracts with Customers one two On July 9, 2015, 2014 09 one December 15, 2017 third 10 In February 2016, 2016 02, Leases December 15, 2018 In March 2016, 2016 09, Employee Share-Based Payment Accounting December 15, 2016 January 1, 2017. In August 2016, 2016 15, Statement of Cash Flows December 15, 2017

Note 3 - Net Income Per Commo26

Note 3 - Net Income Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Year Ended December 31, (in thousands, except share and per share amounts) 2016 2015 2014 Net Income $ 42,707 $ 46,514 $ 41,635 Basic - weighted-average shares outstanding: 26,365,173 26,005,858 25,692,699 Effect of dilutive securities: Employee stock options and other 199,466 314,426 407,621 Diluted - weighted-average shares outstanding: 26,564,639 26,320,284 26,100,320 Net income per share attributable to common shareholders: Basic $ 1.62 $ 1.79 $ 1.62 Diluted $ 1.61 $ 1.77 $ 1.60

Note 4 - Business Combinations

Note 4 - Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	(in thousands) Assets acquired: Current assets $ 2,766 Other long-term assets 3,876 Total assets acquired 6,642 Liabilities assumed: Current liabilities 1,266 Total liabilities assumed 1,266 Net assets acquired $ 5,376 Cash paid $ 5,570 Cash acquired (538 ) Total purchase consideration $ 5,032 Gain recognized on bargain purchase $ 344 (in thousands) Assets acquired: Current assets $ 1,248 Intangible assets 4,580 Goodwill 28,916 Other long-term assets 3,849 Total assets acquired 38,593 Liabilities assumed: Current liabilities 1,729 Total liabilities assumed 1,729 Net assets acquired 36,864 Cash paid 34,468 Cash acquired (604 ) Net cash consideration 33,864 Contingent consideration 3,000 Total purchase consideration $ 36,864

Note 5 - Goodwill and Other I28

Note 5 - Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Goodwill [Table Text Block]	(in thousands) Dec. 31, 2014 Goodwill acquired during 2015 2015 Other Dec. 31, 2015 Goodwill acquired during 2016 2016 Other Dec. 31, 2016 United States $ 28,916 $ - $ - $ 28,916 $ - $ (4,869 ) $ 24,047 Europe - - - - - 4,239 4,239 Other - - - - - 630 630 Total goodwill $ 28,916 $ - $ - $ 28,916 $ - $ - $ 28,916
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Year Ended December 31, 2016 Year Ended December 31, 2015 Weighted (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Useful Life (in years) Average Life Remaining (in years) Intangible Assets with finite lives: Marketing assets $ 930 $ (248 ) $ 682 $ 930 $ (155 ) $ 775 10.0 7.3 Non-compete agreement 190 (190 ) - 190 (158 ) $ 32 2.0 0 Trade secrets 250 (133 ) 117 250 (83 ) $ 167 5.0 2.3 Internally developed software 680 (604 ) 76 680 (378 ) $ 302 3.0 0.3 Customer relationships 2,530 (750 ) 1,780 2,530 (469 ) $ 2,061 9.0 6.3 Total intangible assets $ 4,580 $ (1,925 ) $ 2,655 $ 4,580 $ (1,243 ) $ 3,337
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	(in thousands) Estimated Amortization Expense 2017 $ 500 2018 424 2019 391 2020 374 2021 374 Thereafter 592 Total estimated amortization expense $ 2,655

Note 6 - Fair Value Measureme29

Note 6 - Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	December 31, 2016 December 31, 2015 (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents Money market mutual funds $ 11,771 $ - $ - $ 11,896 $ - $ - Total $ 11,771 $ - $ - $ 11,896 $ - $ -

Note 7 - Marketable Securities

Note 7 - Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Held-to-maturity Securities [Table Text Block]	December 31, 2016 (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. government agency securities $ 31,706 $ 1 $ (141 ) $ 31,566 Corporate debt securities 38,490 2 (147 ) 38,345 U.S. municipal securities 46,578 1 (187 ) 46,392 Certificates of deposit/time deposits 7,182 12 (22 ) 7,172 Total marketable securities $ 123,956 $ 16 $ (497 ) $ 123,475 December 31, 2015 (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value U.S. government agency securities $ 26,784 $ 2 $ (99 ) $ 26,687 Corporate debt securities 28,133 - (114 ) 28,019 Commercial paper 1,497 - (2 ) 1,495 U.S. municipal securities 35,667 8 (56 ) 35,619 Certificates of deposit/time deposits 5,909 2 (11 ) 5,900 Total marketable securities $ 97,990 $ 12 $ (282 ) $ 97,720
Investments Classified by Contractual Maturity Date [Table Text Block]	December 31, 2016 Due in one year or less $ 39,477 Due after one year through five years 84,479 Total marketable securities $ 123,956

Note 8 - Property and Equipme31

Note 8 - Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, (in thousands) 2016 2015 Land $ 8,805 $ 8,301 Buildings and improvements 48,467 37,297 Machinery and equipment 114,729 103,205 Computer hardware and software 15,053 13,273 Leasehold improvements 6,688 3,404 Construction in progress 3,491 6,712 Total 197,233 172,192 Accumulated depreciation and amortization (57,759 ) (46,717 ) Property and equipment, net $ 139,474 $ 125,475

Note 9 - Inventory (Tables)

Note 9 - Inventory (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Inventory, Current [Table Text Block]	December 31, (in thousands) 2016 2015 Raw materials $ 8,057 $ 8,589 Work in process 1,531 1,529 Total inventory 9,588 10,118 Allowance for obsolescence (278 ) (347 ) Inventory, net of allowance $ 9,310 $ 9,771

Note 12 - Stock-based Compens33

Note 12 - Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Stock options and other $ 6,177 $ 5,580 $ 4,386 Employee stock purchase plan 598 502 423 Total stock-based compensation expense $ 6,775 $ 6,082 $ 4,809 Cost of revenue $ 691 $ 513 $ 386 Operating expenses: Marketing and sales 977 1,074 927 Research and development 1,396 1,285 1,048 General and administrative 3,711 3,210 2,448 Total stock-based compensation expense $ 6,775 $ 6,082 $ 4,809 Income tax benefits (2,042 ) (1,859 ) (1,524 ) Total stock-based compensation expense, net of tax $ 4,733 $ 4,223 $ 3,285
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Year Ended December 31, 2016 2015 2014 Risk-free interest rate 1.53 - 2.68% 1.69 - 1.77% 0.43 - 2.14% Expected life (years) 6.50 5.50 - 6.50 2.00 - 6.50 Expected volatility 44.38 - 45.93% 46.80 - 47.23% 47.29 - 49.30% Expected dividend yield 0% 0% 0% Weighted average grant date fair value $26.61 $32.42 $32.65
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Weighted- Average Stock Options Exercise Price Options outstanding at January 1, 2014 1,143,250 $ 19.03 Granted 116,050 72.17 Exercised (253,544 ) 13.77 Cancelled (6,769 ) 26.23 Options outstanding at December 31, 2014 998,987 26.49 Granted 110,335 67.36 Exercised (316,761 ) 14.36 Cancelled (26,519 ) 51.72 Options outstanding at December 31, 2015 766,042 36.52 Granted 117,480 57.99 Exercised (226,164 ) 16.65 Cancelled (87,719 ) 61.41 Options outstanding at December 31, 2016 569,639 $ 45.00 Exercisable at December 31, 2016 320,973 $ 34.65
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]	Options Outstanding, Vested and Expected to Vest Options Exercisable Range of Exercise Prices Number Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price ($) Number Exercisable Weighted Average Exercise Price ($) $3.67 to $7.85 29,491 1.72 $ 4.98 29,491 $ 4.98 $7.86 74,100 3.87 7.86 74,100 7.86 $7.87 to $31.43 102,188 5.09 27.62 80,409 26.82 $31.44 to $47.15 56,428 6.08 44.05 24,936 41.95 $47.16 to $66.87 176,743 6.85 57.89 68,116 58.47 $66.88 to $78.59 130,689 7.62 71.64 43,921 73.01
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Weighted- Average Grant Date Restricted Fair Value Stock Awards Per Share Restricted stock at January 1, 2014 - $ - Granted 77,647 69.18 Restrictions lapsed (798 ) 62.68 Forfeited (275 ) 62.68 Restricted stock at December 31, 2014 76,574 69.27 Granted 68,580 68.89 Restrictions lapsed (16,863 ) 69.25 Forfeited (3,898 ) 72.14 Restricted stock at December 31, 2015 124,393 68.97 Granted 161,555 59.37 Restrictions lapsed (41,415 ) 67.78 Forfeited (29,428 ) 63.23 Restricted stock at December 31, 2016 215,105 $ 62.78
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Year ended December 31, 2016 2015 2014 Risk-free interest rate 0.56 - 0.59% 0.08 - 0.39% 0.01 - 0.11% Expected life (months) 6.00 6.00 6.00 Expected volatility 39.51 - 49.13% 29.41 - 37.64% 37.64 - 39.80% Expected dividend yield 0% 0% 0%

Note 13 - Commitments (Tables)

Note 13 - Commitments (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Operating Leases (in thousands) Years Ending December 31, 2017 $ 3,531 2018 2,945 2019 1,960 2020 1,644 2021 1,623 After 2021 2,148 Total future minimum lease payments $ 13,851

Note 14 - Accumulated Other C35

Note 14 - Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Foreign currency translation adjustments Balance at beginning of period $ (5,212 ) $ (2,929 ) $ (1,091 ) Other comprehensive loss before reclassifications (5,541 ) (2,283 ) (1,838 ) Amounts reclassified from accumulated other comprehensive income (loss) - - - Net current-period other comprehensive loss (5,541 ) (2,283 ) (1,838 ) Balance at end of period $ (10,753 ) $ (5,212 ) $ (2,929 )

Note 15 - Income Taxes (Tables)

Note 15 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Domestic $ 59,232 $ 59,421 $ 51,052 Foreign 4,989 8,440 9,479 Total $ 64,221 $ 67,861 $ 60,531
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Current: Federal $ 15,119 $ 15,845 $ 17,413 State 1,091 1,074 1,185 Foreign 2,439 1,591 2,149 Deferred Federal 2,758 2,798 (1,821 ) State 75 (38 ) (17 ) Foreign (1,960 ) 294 130 Valuation Allowance 1,992 (217 ) (143 ) Total $ 21,514 $ 21,347 $ 18,896
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Year Ended December 31, 2016 2015 2014 Federal tax statutory rate 35.0 % 35.0 % 35.0 % State tax (net of federal benefit) 0.6 0.5 0.5 Qualified subsidiary election (0.8 ) 0.6 0.2 Valuation allowance against deferred tax assets 3.1 (0.3 ) (0.2 ) Research and development credit (2.2 ) (2.9 ) (0.8 ) Foreign rate differential (2.8 ) (1.8 ) (2.1 ) Tax reserves 1.4 1.5 0.4 Domestic manufacturing deduction (1.8 ) (1.4 ) (2.1 ) Miscellaneous 0.9 0.3 0.3 Total 33.4 % 31.5 % 31.2 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, (in thousands) 2016 2015 Deferred tax assets: Accrued expenses $ 857 $ 628 Warrants and stock options 3,226 2,828 Intangibles 612 499 Inventories 169 177 Other assets 983 856 Net operating loss 4,333 2,409 Less valuation allowance (4,559 ) (2,625 ) Total deferred tax assets 5,621 4,772 Deferred tax liabilities: Depreciation (10,860 ) (7,945 ) Goodwill (1,764 ) (1,067 ) Total deferred tax liabilities (12,624 ) (9,012 ) Net deferred tax liability $ (7,003 ) $ (4,240 )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	December 31, 2016 2015 Balance at beginning of period $ 2,769 $ 1,295 Additions for tax positions of current year 1,077 919 Additions for tax positions of prior years 170 555 Decrease related to expiration of statutes of limitations (220 ) - Balance at period end $ 3,796 $ 2,769

Note 17 - Segment Reporting (Ta

Note 17 - Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Revenue: United States $ 223,930 $ 208,018 $ 165,117 Europe 63,365 47,433 37,491 Japan 10,760 8,655 6,975 Total revenue $ 298,055 $ 264,106 $ 209,583 December 31, December 31, December 31, (in thousands) 2016 2015 2014 Long-lived assets: United States $ 108,650 $ 98,633 $ 76,923 Europe 23,199 23,636 12,512 Japan 7,625 3,206 2,191 Total long-lived assets $ 139,474 $ 125,475 $ 91,626
Income from Operations by Geographic Area [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Income from Operations: United States $ 89,308 $ 86,450 $ 74,445 Europe 11,657 13,304 14,734 Corporate Unallocated and Japan (39,198 ) (32,605 ) (28,651 ) Total income from operations $ 61,767 $ 67,149 $ 60,528
Expenditures for Additions to Long-lived Assets by Geographic Region [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Expenditures for additions to long-lived United States $ 21,190 $ 32,560 $ 33,480 Europe 5,954 10,396 9,520 Japan 6,472 1,406 507 Total expenditures for additions to long-lived assets $ 33,616 $ 44,362 $ 43,507
Depreciation and Amortization by Geographic Region [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Depreciation and Amortization: United States $ 12,533 $ 11,596 $ 9,233 Europe 3,386 2,132 1,530 Japan 1,566 398 375 Total depreciation and amortization $ 17,485 $ 14,126 $ 11,138
Revenue from External Customers by Products and Services [Table Text Block]	Year Ended December 31, (in thousands) 2016 2015 2014 Revenue: Injection Molding $ 175,974 $ 163,387 $ 140,282 CNC Machining 81,407 74,368 59,914 3D Printing 37,847 25,132 9,387 Other Product 2,827 1,219 - Total revenue $ 298,055 $ 264,106 $ 209,583

Note 2 - Summary of Significa38

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Advertising Expense	$ 10,500	$ 10,000	$ 8,500
Capitalized Computer Software, Net	0	0	0
Research and Development Expense	$ 22,388	$ 18,350	$ 16,607
Building [Member]
Property, Plant and Equipment, Useful Life	39 years
Minimum [Member]
Property, Plant and Equipment, Useful Life	3 years
Finite-Lived Intangible Asset, Useful Life	2 years
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Office Furniture And Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Land, Buildings and Improvements [Member]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member]
Property, Plant and Equipment, Useful Life	39 years
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment, Useful Life	15 years
Maximum [Member] | Office Furniture And Equipment [Member]
Property, Plant and Equipment, Useful Life	7 years
Maximum [Member] | Computer Equipment [Member]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Land, Buildings and Improvements [Member]
Property, Plant and Equipment, Useful Life	39 years

Note 3 - Net Income Per Commo39

Note 3 - Net Income Per Common Share - Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net income	$ 42,707	$ 46,514	$ 41,635
Basic (in shares)	26,365,173	26,005,858	25,692,699
Effect of dilutive securities:
Employee stock options and other (in shares)	199,466	314,426	407,621
Diluted - weighted-average shares outstanding: (in shares)	26,564,639	26,320,284	26,100,320
Net income per share attributable to common shareholders:
Basic (in dollars per share)	$ 1.62	$ 1.79	$ 1.62
Diluted (in dollars per share)	$ 1.61	$ 1.77	$ 1.60

Note 4 - Business Combination40

Note 4 - Business Combinations (Details Textual) - USD ($) $ in Thousands	Oct. 01, 2015	Apr. 23, 2014	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Payments to Acquire Businesses, Net of Cash Acquired					$ 5,032	$ 33,864
Business Combination, Bargain Purchase, Gain Recognized, Amount					344
Alphaform A.G. [Member]
Payments to Acquire Businesses, Net of Cash Acquired	$ 5,000				5,032
Business Combination, Bargain Purchase, Gain Recognized, Amount					344
Alphaform A.G. [Member] | Other Income [Member]
Business Combination, Bargain Purchase, Gain Recognized, Amount					$ 300
FineLine Prototyping, Inc. [Member]
Payments to Acquire Businesses, Net of Cash Acquired		$ 33,900				33,864
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Proceeds from Sale of Held-to-maturity Securities		$ 15,500
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		3,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			$ 3,000
Business Combination, Contingent Consideration, Liability		3,000	$ 3,000			3,000
Business Combination, Consideration Transferred		$ 36,900				$ 36,864

Note 4 - Business Combination41

Note 4 - Business Combinations - Allocation of Purchase Prices of Acquisitions (Details) - USD ($) $ in Thousands	Oct. 01, 2015	Apr. 23, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Assets acquired:
Goodwill			$ 28,916	$ 28,916	$ 28,916
Liabilities assumed:
Total purchase consideration				5,032	33,864
Business Combination, Bargain Purchase, Gain Recognized, Amount				344
Alphaform A.G. [Member]
Assets acquired:
Current assets				2,766
Other long-term assets				3,876
Total assets acquired				6,642
Liabilities assumed:
Current liabilities				1,266
Total liabilities assumed				1,266
Net assets acquired				5,376
Cash paid				5,570
Cash acquired				(538)
Total purchase consideration	$ 5,000			5,032
Business Combination, Bargain Purchase, Gain Recognized, Amount				$ 344
FineLine Prototyping, Inc. [Member]
Assets acquired:
Current assets					1,248
Other long-term assets					3,849
Total assets acquired					38,593
Intangible assets					4,580
Goodwill					28,916
Liabilities assumed:
Current liabilities					1,729
Total liabilities assumed					1,729
Net assets acquired					36,864
Cash paid					34,468
Cash acquired					(604)
Total purchase consideration		$ 33,900			33,864
Business Combination, Contingent Consideration, Liability		3,000			3,000
Business Combination, Consideration Transferred		$ 36,900			$ 36,864

Note 5 - Goodwill and Other I42

Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amortization of Intangible Assets	$ 0.7	$ 0.7	$ 0.5

Note 5 - Goodwill and Other I43

Note 5 - Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill, balance as of the beginning of the period	$ 28,916	$ 28,916
Goodwill acquired during the period
Goodwill, other changes
Goodwill, balance as of the end of the period	28,916	28,916
UNITED STATES
Goodwill, balance as of the beginning of the period	28,916	28,916
Goodwill acquired during the period
Goodwill, other changes	(4,869)
Goodwill, balance as of the end of the period	24,047	28,916
Europe [Member]
Goodwill, balance as of the beginning of the period
Goodwill acquired during the period
Goodwill, other changes	4,239
Goodwill, balance as of the end of the period	4,239
Other Than the United States and Europe [Member]
Goodwill, balance as of the beginning of the period
Goodwill acquired during the period
Goodwill, other changes	630
Goodwill, balance as of the end of the period	$ 630

Note 5 - Goodwill and Other I44

Note 5 - Goodwill and Other Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible Assets with finite lives:
Gross	$ 4,580	$ 4,580
Accumulated amortization	(1,925)	(1,243)
Net	2,655	3,337
Marketing-Related Intangible Assets [Member]
Intangible Assets with finite lives:
Gross	930	930
Accumulated amortization	(248)	(155)
Net	$ 682	775
Useful life (Year)	10 years
Weighted average useful life remaining (Year)	7 years 109 days
Noncompete Agreements [Member]
Intangible Assets with finite lives:
Gross	$ 190	190
Accumulated amortization	(190)	(158)
Net		32
Useful life (Year)	2 years
Weighted average useful life remaining (Year)	0 years
Trade Secrets [Member]
Intangible Assets with finite lives:
Gross	$ 250	250
Accumulated amortization	(133)	(83)
Net	$ 117	167
Useful life (Year)	5 years
Weighted average useful life remaining (Year)	2 years 109 days
Computer Software, Intangible Asset [Member]
Intangible Assets with finite lives:
Gross	$ 680	680
Accumulated amortization	(604)	(378)
Net	$ 76	302
Useful life (Year)	3 years
Weighted average useful life remaining (Year)	109 days
Customer Relationships [Member]
Intangible Assets with finite lives:
Gross	$ 2,530	2,530
Accumulated amortization	(750)	(469)
Net	$ 1,780	$ 2,061
Useful life (Year)	9 years
Weighted average useful life remaining (Year)	6 years 109 days

Note 5 - Goodwill and Other I45

Note 5 - Goodwill and Other Intangible Assets - Estimated Aggregated Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
2,017	$ 500
2,018	424
2,019	391
2,020	374
2,021	374
Thereafter	592
Total estimated amortization expense	$ 2,655	$ 3,337

Note 6 - Fair Value Measureme46

Note 6 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Money market mutual funds	$ 11,771	$ 11,896
Total	11,771	11,896
Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents:
Money market mutual funds
Total
Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents:
Money market mutual funds
Total

Note 7 - Marketable Securitie47

Note 7 - Marketable Securities - Short-term and Long-term Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Amortized Cost	$ 123,956	$ 97,990
Unrealized Gains	16	12
Unrealized Losses	(497)	(282)
Fair Value	123,475	97,720
Bank Time Deposits [Member]
Amortized Cost	7,182	5,909
Unrealized Gains	12	2
Unrealized Losses	(22)	(11)
Fair Value	7,172	5,900
US Government Agencies Debt Securities [Member]
Amortized Cost	31,706	26,784
Unrealized Gains	1	2
Unrealized Losses	(141)	(99)
Fair Value	31,566	26,687
Corporate Debt Securities [Member]
Amortized Cost	38,490	28,133
Unrealized Gains	2
Unrealized Losses	(147)	(114)
Fair Value	38,345	28,019
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	46,578	35,667
Unrealized Gains	1	8
Unrealized Losses	(187)	(56)
Fair Value	$ 46,392	35,619
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Amortized Cost		1,497
Unrealized Gains
Unrealized Losses		(2)
Fair Value		$ 1,495

Note 7 - Marketable Securitie48

Note 7 - Marketable Securities - Balance of Held-to-maturity Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Due in one year or less	$ 39,477
Due after one year through five years	84,479
Total marketable securities	$ 123,956	$ 97,990

Note 8 - Property and Equipme49

Note 8 - Property and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Depreciation	$ 16.8	$ 13.4	$ 10.6

Note 8 - Property and Equipme50

Note 8 - Property and Equipment - Componets of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Land	$ 8,805	$ 8,301
Buildings and improvements	48,467	37,297
Machinery and equipment	114,729	103,205
Computer hardware and software	15,053	13,273
Leasehold improvements	6,688	3,404
Construction in progress	3,491	6,712
Total	197,233	172,192
Accumulated depreciation and amortization	(57,759)	(46,717)
Property and equipment, net	$ 139,474	$ 125,475	$ 91,626

Note 9 - Inventory - Inventory

Note 9 - Inventory - Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Raw materials	$ 8,057	$ 8,589
Work in process	1,531	1,529
Total inventory	9,588	10,118
Allowance for obsolescence	(278)	(347)
Inventory, net of allowance	$ 9,310	$ 9,771

Note 10 - Financing Obligatio52

Note 10 - Financing Obligations (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt, Long-term and Short-term, Combined Amount	$ 0	$ 0

Note 11 - Employee Benefit Pl53

Note 11 - Employee Benefit Plans (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Minimum Number Of Employee Working Hours Required To Be Eligible To Participate In 401K Plan	20
Minimum Service Period Of Employees To Avail Benefit Under Defined Contribution Benefit Plan	90 days
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	50.00%
401(k) Retirement Plan [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1.6	$ 1.2	$ 0.8
Defined Contribution Retirement Plan for Proto Labs Limited Employees [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0.2	$ 0.2	$ 0.1

Note 12 - Stock-based Compens54

Note 12 - Stock-based Compensation (Details Textual) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014USD ($)$ / shares
Number Of Equity Incentive Plans	2
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date	15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	6 years
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price | $ / shares	$ 16.65	$ 14.36	$ 13.77
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant | shares	1,285,314
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	$ 11.1	$ 18.6	$ 16.3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	6 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 7.4
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years 219 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 6.8
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 5.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 3.6	$ 2.8	$ 3.2
Employee Stock Option [Member]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures | shares	40,279	31,905
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price | $ / shares	$ 48.38	$ 53.64
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	5 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 11
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	3 years 255 days

Note 12 - Stock-based Compens55

Note 12 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allocated share-based compensation expense	$ 6,775	$ 6,082	$ 4,809
Income tax benefits	(2,042)	(1,859)	(1,524)
Total stock-based compensation expense, net of tax	4,733	4,223	3,285
Cost of Sales [Member]
Allocated share-based compensation expense	691	513	386
Selling and Marketing Expense [Member]
Allocated share-based compensation expense	977	1,074	927
Research and Development Expense [Member]
Allocated share-based compensation expense	1,396	1,285	1,048
General and Administrative Expense [Member]
Allocated share-based compensation expense	3,711	3,210	2,448
Employee Stock Option [Member]
Allocated share-based compensation expense	6,177	5,580	4,386
ESPP [Member]
Allocated share-based compensation expense	$ 598	$ 502	$ 423

Note 12 - Stock-based Compens56

Note 12 - Stock-based Compensation - Assumptions Used in the Black-Scholes Option Pricing Model (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Expected dividend yield	0.00%
Employee Stock Option [Member]
Expected life (years) (Year)	6 years 182 days
Expected dividend yield	0.00%	0.00%	0.00%
Weighted average grant date fair value (in dollars per share)	$ 26.61	$ 32.42	$ 32.65
Employee Stock Option [Member] | Minimum [Member]
Risk-free interest rate	1.53%	1.69%	0.43%
Expected life (years) (Year)		5 years 182 days	2 years
Expected volatility	44.38%	46.80%	47.29%
Employee Stock Option [Member] | Maximum [Member]
Risk-free interest rate	2.68%	1.77%	2.14%
Expected life (years) (Year)		6 years 182 days	6 years 182 days
Expected volatility	45.93%	47.23%	49.30%

Note 12 - Stock-based Compens57

Note 12 - Stock-based Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Options outstanding (in shares)	766,042	998,987	1,143,250
Options outstanding (in dollars per share)	$ 36.52	$ 26.49	$ 19.03
Granted (in shares)	117,480	110,335	116,050
Granted (in dollars per share)	$ 57.99	$ 67.36	$ 72.17
Exercised (in shares)	(226,164)	(316,761)	(253,544)
Exercised (in dollars per share)	$ 16.65	$ 14.36	$ 13.77
Cancelled (in shares)	(87,719)	(26,519)	(6,769)
Cancelled (in dollars per share)	$ 61.41	$ 51.72	$ 26.23
Options outstanding (in shares)	569,639	766,042	998,987
Options outstanding (in dollars per share)	$ 45	$ 36.52	$ 26.49
Options exercisable (in shares)	320,973
Options exercisable, (in dollars per share)	$ 34.65

Note 12 - Stock-based Compens58

Note 12 - Stock-based Compensation - Information about Stock Options Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Options outstanding, vested and expected to vest, number outstanding (in shares)	569,639	766,042	998,987	1,143,250
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 45	$ 36.52	$ 26.49	$ 19.03
Exercise Price Range One [Member]
Range of exercise prices, lower limit (in dollars per share)	3.67
Range of exercise prices, upper limit (in dollars per share)	$ 7.85
Options outstanding, vested and expected to vest, number outstanding (in shares)	29,491
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	1 year 262 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 4.98
Options exercisable, number exercisable (in shares)	29,491
Options exercisable, weighted average exercise price (in dollars per share)	$ 4.98
Exercise Price Range Two [Member]
Options outstanding, vested and expected to vest, number outstanding (in shares)	74,100
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	3 years 317 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 7.86
Options exercisable, number exercisable (in shares)	74,100
Options exercisable, weighted average exercise price (in dollars per share)	$ 7.86
Exercise Price Range Three [Member]
Range of exercise prices, lower limit (in dollars per share)	7.87
Range of exercise prices, upper limit (in dollars per share)	$ 31.43
Options outstanding, vested and expected to vest, number outstanding (in shares)	102,188
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	5 years 32 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 27.62
Options exercisable, number exercisable (in shares)	80,409
Options exercisable, weighted average exercise price (in dollars per share)	$ 26.82
Exercise Price Range Four [Member]
Range of exercise prices, lower limit (in dollars per share)	31.44
Range of exercise prices, upper limit (in dollars per share)	$ 47.15
Options outstanding, vested and expected to vest, number outstanding (in shares)	56,428
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	6 years 29 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 44.05
Options exercisable, number exercisable (in shares)	24,936
Options exercisable, weighted average exercise price (in dollars per share)	$ 41.95
Exercise Price Range Five [Member]
Range of exercise prices, lower limit (in dollars per share)	47.16
Range of exercise prices, upper limit (in dollars per share)	$ 66.87
Options outstanding, vested and expected to vest, number outstanding (in shares)	176,743
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	6 years 310 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 57.89
Options exercisable, number exercisable (in shares)	68,116
Options exercisable, weighted average exercise price (in dollars per share)	$ 58.47
Exercise Price Range Six [Member]
Range of exercise prices, lower limit (in dollars per share)	66.88
Range of exercise prices, upper limit (in dollars per share)	$ 78.59
Options outstanding, vested and expected to vest, number outstanding (in shares)	130,689
Options outstanding, vested and expected to vest, weighted average remaining contractual life (Year)	7 years 226 days
Options outstanding, vested and expected to vest, weighted average exercise price (in dollars per share)	$ 71.64
Options exercisable, number exercisable (in shares)	43,921
Options exercisable, weighted average exercise price (in dollars per share)	$ 73.01

Note 12 - Stock-based Compens59

Note 12 - Stock-based Compensation - Non-vested Restricted Stock Options (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restricted stock (in shares)	124,393	76,574
Restricted stock (in dollars per share)	$ 68.97	$ 69.27
Granted (in shares)	161,555	68,580	77,647
Granted (in dollars per share)	$ 59.37	$ 68.89	$ 69.18
Restrictions lapsed (in shares)	(41,415)	(16,863)	(798)
Restrictions lapsed (in dollars per share)	$ 67.78	$ 69.25	$ 62.68
Forfeited (in shares)	(29,428)	(3,898)	(275)
Forfeited (in dollars per share)	$ 63.23	$ 72.14	$ 62.68
Restricted stock (in shares)	215,105	124,393	76,574
Restricted stock (in dollars per share)	$ 62.78	$ 68.97	$ 69.27

Note 12 - Stock-based Compens60

Note 12 - Stock-based Compensation - Assumptions Used to Estimate the Fair Value of the ESPP (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Expected dividend yield	0.00%
ESPP [Member]
Expected life (years) (Year)	180 days	180 days	180 days
Expected dividend yield	0.00%	0.00%	0.00%
Minimum [Member] | ESPP [Member]
Risk-free interest rate	0.56%	0.08%	0.01%
Expected volatility	39.51%	29.41%	37.64%
Maximum [Member] | ESPP [Member]
Risk-free interest rate	0.59%	0.39%	0.11%
Expected volatility	49.13%	37.64%	39.80%

Note 13 - Commitments (Details

Note 13 - Commitments (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leases, Rent Expense, Net	$ 3.6	$ 1.4	$ 1

Note 13 - Commitments - Future

Note 13 - Commitments - Future Minimum Commitments under Non-cancelable Leases (Details) $ in Thousands	Dec. 31, 2016USD ($)
2,017	$ 3,531
2,018	2,945
2,019	1,960
2,020	1,644
2,021	1,623
After 2,021	2,148
Total future minimum lease payments	$ 13,851

Note 14 - Accumulated Other C63

Note 14 - Accumulated Other Comprehensive Income - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance beginning of period	$ (5,212)	$ (2,929)	$ (1,091)
Other comprehensive loss before reclassifications	(5,541)	(2,283)	(1,838)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Net current-period other comprehensive loss	(5,541)	(2,283)	(1,838)
Balance at end of period	$ (10,753)	$ (5,212)	$ (2,929)

Note 15 - Income Taxes (Details

Note 15 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Expense (Benefit)	$ 21,514	$ 21,347	$ 18,896
Effective Income Tax Rate Reconciliation, Percent	33.40%	31.50%	31.20%
Undistributed Earnings of Foreign Subsidiaries	$ 26,600
Operating Loss Carryforwards	$ 13,400
Operating Loss Carryforwards, Expiration Period	10 years
Operating Loss Carryforwards, Percentage of Taxable Income	80.00%
Deferred Tax Assets, Valuation Allowance	$ 4,559	$ 2,625
Unrecognized Tax Benefits	3,796	$ 2,769	$ 1,295
Deferred Tax Liabilities, Undistributed Foreign Earnings	$ 0

Note 15 - Income Taxes - Compon

Note 15 - Income Taxes - Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Domestic	$ 59,232	$ 59,421	$ 51,052
Foreign	4,989	8,440	9,479
Income before income taxes	$ 64,221	$ 67,861	$ 60,531

Note 15 - Income Taxes - Signif

Note 15 - Income Taxes - Significant Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
Federal	$ 15,119	$ 15,845	$ 17,413
State	1,091	1,074	1,185
Foreign	2,439	1,591	2,149
Deferred
Federal	2,758	2,798	(1,821)
State	75	(38)	(17)
Foreign	(1,960)	294	130
Valuation Allowance	1,992	(217)	(143)
Total	$ 21,514	$ 21,347	$ 18,896

Note 15 - Income Taxes - Reconc

Note 15 - Income Taxes - Reconciliation of Federal Statutory Income Tax Rate to Effective Tax Rate (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal tax statutory rate	35.00%	35.00%	35.00%
State tax (net of federal benefit)	0.60%	0.50%	0.50%
Qualified subsidiary election	(0.80%)	0.60%	0.20%
Valuation allowance against deferred tax assets	3.10%	(0.30%)	(0.20%)
Research and development credit	(2.20%)	(2.90%)	(0.80%)
Foreign rate differential	(2.80%)	(1.80%)	(2.10%)
Tax reserves	1.40%	1.50%	0.40%
Domestic manufacturing deduction	(1.80%)	(1.40%)	(2.10%)
Miscellaneous	0.90%	0.30%	0.30%
Total	33.40%	31.50%	31.20%

Note 15 - Income Taxes - Sign68

Note 15 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Accrued expenses	$ 857	$ 628
Warrants and stock options	3,226	2,828
Intangibles	612	499
Inventories	169	177
Other assets	983	856
Net operating loss	4,333	2,409
Less valuation allowance	(4,559)	(2,625)
Total deferred tax assets	5,621	4,772
Deferred tax liabilities:
Depreciation	(10,860)	(7,945)
Goodwill	(1,764)	(1,067)
Total deferred tax liabilities	(12,624)	(9,012)
Net deferred tax liability	$ (7,003)	$ (4,240)

Note 15 - Income Taxes - Reco69

Note 15 - Income Taxes - Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance	$ 2,769	$ 1,295
Additions for tax positions of current year	1,077	919
Additions for tax positions of prior years	170	555
Decrease related to expiration of statutes of limitations	(220)
Balance	$ 3,796	$ 2,769

Note 17 - Segment Reporting - R

Note 17 - Segment Reporting - Revenue to External Customers and Long-lived Assets by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 298,055	$ 264,106	$ 209,583
Long-lived assets:
Property and equipment, net	139,474	125,475	91,626
UNITED STATES
Revenue	223,930	208,018	165,117
Long-lived assets:
Property and equipment, net	108,650	98,633	76,923
Europe [Member]
Revenue	63,365	47,433	37,491
Long-lived assets:
Property and equipment, net	23,199	23,636	12,512
JAPAN
Revenue	10,760	8,655	6,975
Long-lived assets:
Property and equipment, net	$ 7,625	$ 3,206	$ 2,191

Note 17 - Segment Reporting - I

Note 17 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income from operations	$ 61,767	$ 67,149	$ 60,528
UNITED STATES
Income from operations	89,308	86,450	74,445
Europe [Member]
Income from operations	11,657	13,304	14,734
JAPAN
Income from operations	$ (39,198)	$ (32,605)	$ (28,651)

Note 17 - Segment Reporting - E

Note 17 - Segment Reporting - Expenditures for Additions to Long-lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Expenditures for additions to long-lived assets	$ 33,616	$ 44,362	$ 43,507
UNITED STATES
Expenditures for additions to long-lived assets	21,190	32,560	33,480
Europe [Member]
Expenditures for additions to long-lived assets	5,954	10,396	9,520
JAPAN
Expenditures for additions to long-lived assets	$ 6,472	$ 1,406	$ 507

Note 17 - Segment Reporting - D

Note 17 - Segment Reporting - Depreciation and Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Depreciation and amortization	$ 17,485	$ 14,126	$ 11,138
UNITED STATES
Depreciation and amortization	12,533	11,596	9,233
Europe [Member]
Depreciation and amortization	3,386	2,132	1,530
JAPAN
Depreciation and amortization	$ 1,566	$ 398	$ 375

Note 17 - Segment Reporting -74

Note 17 - Segment Reporting - Revenue by Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 298,055	$ 264,106	$ 209,583
Injection Molding (Protomold) [Member]
Revenue	175,974	163,387	140,282
CNC Machining (Firstcut) [Member]
Revenue	81,407	74,368	59,914
3D Printing (Fineline) [Member]
Revenue	37,847	25,132	9,387
Other Products [Member]
Revenue	$ 2,827	$ 1,219

Note 18 - Subsequent Events (De

Note 18 - Subsequent Events (Details Textual) $ in Millions	Feb. 09, 2017USD ($)
Subsequent Event [Member]
Stock Repurchase Program, Authorized Amount	$ 50