Proto Labs (PRLB) 10-Q 29 Oct 19 2019 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 24, 2019
Document Information [Line Items]
Entity Central Index Key	0001443669
Entity Registrant Name	Proto Labs Inc
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-35435
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1939628
Entity Address, Address Line One	5540 Pioneer Creek Drive
Entity Address, City or Town	Maple Plain
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55359
City Area Code	763
Local Phone Number	479-3680
Title of 12(b) Security	Common Stock, Par Value $0.001 Per Share
Trading Symbol	PRLB
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		26,759,436

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 121,568	$ 85,046
Short-term marketable securities	23,642	46,750
Accounts receivable, net of allowance for doubtful accounts of $1,001 and $919 as of September 30, 2019 and December 31, 2018, respectively	64,069	59,155
Inventory	9,448	10,087
Prepaid expenses and other current assets	8,038	8,567
Income taxes receivable	2,852	5,757
Total current assets	229,617	215,362
Property and equipment, net	252,579	228,001
Goodwill	128,752	128,752
Other intangible assets, net	18,258	19,850
Long-term marketable securities	9,783	23,579
Operating lease assets	12,008	0
Other long-term assets	3,902	3,441
Total assets	654,899	618,985
Current liabilities
Accounts payable	18,668	17,411
Accrued compensation	12,926	18,130
Accrued liabilities and other	13,133	16,702
Current operating lease liabilities	3,364	0
Income taxes payable	6,717	491
Total current liabilities	54,808	52,734
Long-term operating lease liabilities	9,006	0
Long-term deferred tax liabilities	21,750	20,162
Other long-term liabilities	5,238	4,592
Total liabilities	90,802	77,488
Shareholders' equity
Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and outstanding 0 shares as of each of September 30, 2019 and December 31, 2018	0	0
Common stock, $0.001 par value, authorized 150,000,000 shares; issued and outstanding 26,759,109 and 26,984,747 shares as of September 30, 2019 and December 31, 2018, respectively	27	27
Additional paid-in capital	265,178	258,502
Retained earnings	309,536	291,460
Accumulated other comprehensive loss	(10,644)	(8,492)
Total shareholders' equity	564,097	541,497
Total liabilities and shareholders' equity	$ 654,899	$ 618,985

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 1,001	$ 919
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)	26,759,109	26,984,747
Common stock, shares outstanding (in shares)	26,759,109	26,984,747

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statements of Operations:
Revenue	$ 117,455	$ 115,430	$ 346,839	$ 332,827
Cost of revenue	57,839	53,027	168,127	153,303
Gross profit	59,616	62,403	178,712	179,524
Operating expenses
Marketing and sales	17,604	16,818	55,466	50,947
Research and development	8,359	7,458	24,541	21,155
General and administrative	12,380	13,096	38,411	38,679
Total operating expenses	38,343	37,372	118,418	110,781
Income from operations	21,273	25,031	60,294	68,743
Other income, net	228	390	1,566	1,376
Income before income taxes	21,501	25,421	61,860	70,119
Provision for income taxes	4,709	4,484	13,391	12,817
Net income	$ 16,792	$ 20,937	$ 48,469	$ 57,302
Net income per share:
Basic (in dollars per share)	$ 0.63	$ 0.77	$ 1.80	$ 2.13
Diluted (in dollars per share)	$ 0.62	$ 0.77	$ 1.79	$ 2.10
Shares used to compute net income per share:
Basic (in shares)	26,846,030	27,038,585	26,894,420	26,963,205
Diluted (in shares)	27,005,341	27,337,886	27,072,873	27,268,311
Comprehensive Income (net of tax)
Comprehensive income	$ 14,642	$ 20,058	$ 46,317	$ 55,298

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, 2017	26,828,651
Balance at Dec. 31, 2017	$ 27	$ 241,725	$ 224,697	$ (5,234)	$ 461,215
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	102,895
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		2,250			2,250
Stock-based compensation expense		2,307			2,307
Repurchases of common stock (in shares)	0
Net income			18,051		18,051
Other comprehensive income
Foreign currency translation adjustment				2,393	2,393
Comprehensive income					20,444
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	102,895
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		2,250			2,250
Stock-based compensation expense		2,307			2,307
Repurchases of common stock (in shares)	0
Net income			18,051		18,051
Balance (in shares) at Dec. 31, 2017	26,828,651
Balance at Dec. 31, 2017	$ 27	241,725	224,697	(5,234)	461,215
Balance (in shares) at Mar. 31, 2018	26,931,546
Balance at Mar. 31, 2018	$ 27	246,282	244,208	(2,841)	487,676
Balance (in shares) at Dec. 31, 2017	26,828,651
Balance at Dec. 31, 2017	$ 27	241,725	224,697	(5,234)	461,215
Net income					57,302
Other comprehensive income
Comprehensive income					55,298
Net income					57,302
Balance (in shares) at Dec. 31, 2017	26,828,651
Balance at Dec. 31, 2017	$ 27	241,725	224,697	(5,234)	461,215
Balance (in shares) at Sep. 30, 2018	27,068,068
Balance at Sep. 30, 2018	$ 27	254,958	283,459	(7,238)	531,206
Other comprehensive income
Revenue recognition transition adjustment			1,460		1,460
Balance (in shares) at Mar. 31, 2018	26,931,546
Balance at Mar. 31, 2018	$ 27	246,282	244,208	(2,841)	487,676
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	94,848
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		1,054			1,054
Stock-based compensation expense		2,727			2,727
Repurchases of common stock (in shares)	0
Net income			18,314		18,314
Other comprehensive income
Foreign currency translation adjustment				(3,518)	(3,518)
Comprehensive income					14,796
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	94,848
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		1,054			1,054
Stock-based compensation expense		2,727			2,727
Repurchases of common stock (in shares)	0
Net income			18,314		18,314
Balance (in shares) at Mar. 31, 2018	26,931,546
Balance at Mar. 31, 2018	$ 27	246,282	244,208	(2,841)	487,676
Balance (in shares) at Jun. 30, 2018	27,026,394
Balance at Jun. 30, 2018	$ 27	250,063	262,522	(6,359)	506,253
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	41,674
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		1,942			1,942
Stock-based compensation expense		2,953			2,953
Repurchases of common stock (in shares)	0
Net income			20,937		20,937
Other comprehensive income
Foreign currency translation adjustment				(879)	(879)
Comprehensive income					20,058
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	41,674
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		1,942			1,942
Stock-based compensation expense		2,953			2,953
Repurchases of common stock (in shares)	0
Net income			20,937		20,937
Balance (in shares) at Jun. 30, 2018	27,026,394
Balance at Jun. 30, 2018	$ 27	250,063	262,522	(6,359)	506,253
Balance (in shares) at Sep. 30, 2018	27,068,068
Balance at Sep. 30, 2018	$ 27	254,958	283,459	(7,238)	$ 531,206
Balance (in shares) at Dec. 31, 2018	26,984,747				26,984,747
Balance at Dec. 31, 2018	$ 27	258,502	291,460	(8,492)	$ 541,497
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	19,950
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		(420)			(420)
Stock-based compensation expense		3,040			3,040
Repurchases of common stock (in shares)	(157,716)
Repurchases of common stock		(1,511)	(15,798)		(17,309)
Net income			15,511		15,511
Other comprehensive income
Foreign currency translation adjustment				476	476
Comprehensive income					15,987
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	19,950
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		(420)			(420)
Stock-based compensation expense		3,040			3,040
Repurchases of common stock (in shares)	(157,716)
Repurchases of common stock		(1,511)	(15,798)		(17,309)
Net income			15,511		$ 15,511
Balance (in shares) at Dec. 31, 2018	26,984,747				26,984,747
Balance at Dec. 31, 2018	$ 27	258,502	291,460	(8,492)	$ 541,497
Balance (in shares) at Mar. 31, 2019	26,846,981
Balance at Mar. 31, 2019	$ 27	259,611	291,173	(8,016)	$ 542,795
Balance (in shares) at Dec. 31, 2018	26,984,747				26,984,747
Balance at Dec. 31, 2018	$ 27	258,502	291,460	(8,492)	$ 541,497
Net income					48,469
Other comprehensive income
Comprehensive income					46,317
Net income					$ 48,469
Balance (in shares) at Dec. 31, 2018	26,984,747				26,984,747
Balance at Dec. 31, 2018	$ 27	258,502	291,460	(8,492)	$ 541,497
Balance (in shares) at Sep. 30, 2019	26,759,109				26,759,109
Balance at Sep. 30, 2019	$ 27	265,178	309,536	(10,644)	$ 564,097
Balance (in shares) at Mar. 31, 2019	26,846,981
Balance at Mar. 31, 2019	$ 27	259,611	291,173	(8,016)	542,795
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	75,785
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		245			245
Stock-based compensation expense		3,486			3,486
Repurchases of common stock (in shares)	(40,669)
Repurchases of common stock		(390)	(3,711)		(4,101)
Net income			16,166		16,166
Other comprehensive income
Foreign currency translation adjustment				(478)	(478)
Comprehensive income					15,688
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	75,785
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		245			245
Stock-based compensation expense		3,486			3,486
Repurchases of common stock (in shares)	(40,669)
Repurchases of common stock		(390)	(3,711)		(4,101)
Net income			16,166		16,166
Balance (in shares) at Mar. 31, 2019	26,846,981
Balance at Mar. 31, 2019	$ 27	259,611	291,173	(8,016)	542,795
Balance (in shares) at Jun. 30, 2019	26,882,097
Balance at Jun. 30, 2019	$ 27	262,952	303,628	(8,494)	558,113
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	5,089
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		241			241
Stock-based compensation expense		3,212			3,212
Repurchases of common stock (in shares)	(128,077)
Repurchases of common stock		(1,227)	(10,884)		(12,111)
Net income			16,792		16,792
Other comprehensive income
Foreign currency translation adjustment				(2,150)	(2,150)
Comprehensive income					14,642
Common shares issued on exercise of options and other, net of shares withheld for tax obligations (in shares)	5,089
Common shares issued on exercise of options and other, net of shares withheld for tax obligations		241			241
Stock-based compensation expense		3,212			3,212
Repurchases of common stock (in shares)	(128,077)
Repurchases of common stock		(1,227)	(10,884)		(12,111)
Net income			16,792		16,792
Balance (in shares) at Jun. 30, 2019	26,882,097
Balance at Jun. 30, 2019	$ 27	262,952	303,628	(8,494)	$ 558,113
Balance (in shares) at Sep. 30, 2019	26,759,109				26,759,109
Balance at Sep. 30, 2019	$ 27	$ 265,178	$ 309,536	$ (10,644)	$ 564,097

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating activities
Net income	$ 48,469	$ 57,302
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	22,658	19,520
Stock-based compensation expense	9,738	7,986
Deferred taxes	1,599	1,770
Gain on sale of businesses	0	(671)
Amortization of held-to-maturity securities	(5)	336
Other	(133)	160
Changes in operating assets and liabilities:
Accounts receivable	(5,387)	(8,993)
Inventories	551	324
Prepaid expenses and other	(162)	(2,058)
Income taxes	9,165	2,278
Accounts payable	1,479	980
Accrued liabilities and other	(4,193)	6,028
Net cash provided by operating activities	83,779	84,962
Investing activities
Purchases of property, equipment and other capital assets	(46,151)	(61,898)
Cash used for acquisitions, net of cash acquired	0	(90)
Proceeds from sale of business	0	284
Purchases of other assets and investments	(4,000)	(126)
Purchases of marketable securities	(17,443)	(41,384)
Proceeds from maturities of marketable securities	54,352	44,721
Net cash used in investing activities	(13,242)	(58,493)
Financing activities
Payments on debt	0	(5,000)
Proceeds from exercises of stock options	2,486	7,269
Purchases of shares withheld for tax obligations	(2,420)	(2,021)
Repurchases of common stock	(33,521)	0
Net cash (used in) provided by financing activities	(33,455)	248
Effect of exchange rate changes on cash and cash equivalents	(560)	(831)
Net increase in cash and cash equivalents	36,522	25,886
Cash and cash equivalents, beginning of period	85,046	36,707
Cash and cash equivalents, end of period	$ 121,568	$ 62,593

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1 The unaudited interim Consolidated Financial Statements of Proto Labs, Inc. (Protolabs, the Company, we, us or our) have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) for interim financial information and with the instructions to Form 10 10 X. not may The preparation of the financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses, and the related disclosures at the date of the financial statements and during the reporting period. Actual results could materially differ from these estimates. For further information, refer to the audited Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10 December 31, 2018 February 22, 2019. The accompanying Consolidated Balance Sheet as of December 31, 2018 not 10 10 February 22, 2019

Note 2 - Recent Accounting Pron

Note 2 - Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Significant Accounting Policies [Text Block]	Note 2 Recently Adopted Accounting Pronouncements During the first 2019, 2016 02, Leases 842 2018 11, Leases 840, Leases 12 January 1, 2019 Recently Issued Accounting Pronouncements In January 2017, 2017 04, Intangibles – Goodwill and Other December 15, 2019 not In June 2016, 2016 13, Financial Instruments – Credit Losses December 15, 2019 not

Note 3 - Net Income Per Common

Note 3 - Net Income Per Common Share	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 3 Basic net income per share is computed based on the weighted-average number of common shares outstanding. Diluted net income per share is computed based on the weighted-average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options, restricted stock units and restricted stock awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan. Performance stock units are excluded from the calculation of dilutive potential common shares until the performance conditions have been satisfied. The table below sets forth the computation of basic and diluted net income per share: Three Months Ended Nine Months Ended September 30, September 30, (in thousands, except share and per share amounts) 2019 2018 2019 2018 Net income $ 16,792 $ 20,937 $ 48,469 $ 57,302 Basic - weighted-average shares outstanding: 26,846,030 27,038,585 26,894,420 26,963,205 Effect of dilutive securities: Employee stock options and other 159,311 299,301 178,453 305,106 Diluted - weighted-average shares outstanding: 27,005,341 27,337,886 27,072,873 27,268,311 Net income per share: Basic $ 0.63 $ 0.77 $ 1.80 $ 2.13 Diluted $ 0.62 $ 0.77 $ 1.79 $ 2.10

Note 4 - Goodwill and Other Int

Note 4 - Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 4 There were no changes in the carrying amount of Goodwill during the three nine September 30, 2019 Intangible assets other than goodwill at September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 Useful Weighted Average (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Life Useful Life Intangible assets with finite lives: Marketing assets $ 930 $ (504 ) $ 426 $ 930 $ (434 ) $ 496 10.0 4.6 Non-compete agreement 270 (218 ) 52 270 (206 ) 64 2.0 - 5.0 3.3 Trade secrets 250 (250 ) - 250 (233 ) 17 5.0 0.0 Trade names 1,080 (945 ) 135 1,080 (540 ) 540 2.0 0.3 Software technology 13,229 (1,933 ) 11,296 12,229 (997 ) 11,232 10.0 8.3 Customer relationships 10,070 (3,721 ) 6,349 10,070 (2,569 ) 7,501 6.0 - 9.0 4.1 Total intangible assets $ 25,829 $ (7,571 ) $ 18,258 $ 24,829 $ (4,979 ) $ 19,850 Amortization expense for intangible assets was $0.9 million and $0.8 million for the three September 30, 2019 2018 nine September 30, 2019 2018 Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets is as follows: (in thousands) Estimated Remaining 2019 $ 889 2020 3,016 2021 3,016 2022 3,016 2023 2,813 Thereafter 5,508 Total estimated amortization expense $ 18,258

Note 5 - Fair Value Measurement

Note 5 - Fair Value Measurements	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 5 ASC 820, Fair Value Measuremen 820 820 three may Level 1—Quoted Level 2—Observable 1 not Level 3—Unobservable no The Company’s cash consists of bank deposits. The Company’s cash equivalents measured at fair value consist of money market mutual funds. The Company determines the fair value of these investments using Level 1 The following table summarizes financial assets as of September 30, 2019 December 31, 2018 September 30, 2019 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents Money market mutual fund $ 58,563 $ - $ - $ 8,943 $ - $ - Total $ 58,563 $ - $ - $ 8,943 $ - $ -

Note 6 - Marketable Securities

Note 6 - Marketable Securities	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Investment [Text Block]	Note 6 The Company invests in short-term and long-term agency, municipal, corporate and other debt securities. The securities are categorized as held-to-maturity and are recorded at amortized cost. Categorization as held-to-maturity is based on the Company’s ability and intent to hold these securities to maturity. The following table summarizes information regarding the Company’s short-term and long-term marketable securities as of September 30, 2019 December 31, 2018 September 30, 2019 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 5,612 $ 11 $ (3 ) $ 5,620 Corporate debt securities 16,503 100 (1 ) 16,602 U.S. government agency securities 8,340 1 (10 ) 8,331 Certificates of deposit/time deposits 1,479 22 (1 ) 1,500 Commercial paper 1,491 - (1 ) 1,490 Total marketable securities $ 33,425 $ 134 $ (16 ) $ 33,543 December 31, 2018 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 17,509 $ 1 $ (33 ) $ 17,477 Corporate debt securities 31,769 - (96 ) 31,673 U.S. government agency securities 16,843 - (88 ) 16,755 Certificates of deposit/time deposits 4,208 - (25 ) 4,183 Total marketable securities $ 70,329 $ 1 $ (242 ) $ 70,088 Fair values for the corporate debt securities are primarily determined based on quoted market prices (Level 1 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. In reaching this conclusion, the Company considered the credit quality of the issuers of the debt securities as well as the Company’s intent 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 September 30, 2019 may may September 30, (in thousands) 2019 Due in one year or less $ 23,642 Due after one year through five years 9,783 Total marketable securities $ 33,425

Note 7 - Inventory

Note 7 - Inventory	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 7 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 consisted of the following as of the dates indicated: September 30, December 31, (in thousands) 2019 2018 Raw materials $ 9,328 $ 9,560 Work in process 304 792 Total inventory 9,632 10,352 Allowance for obsolescence (184 ) (265 ) Inventory, net of allowance $ 9,448 $ 10,087

Note 8 - Leases

Note 8 - Leases	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	Note 8 The Company’s significant accounting policies are disclosed in Note 2 10 December 31, 2018 842 The Company accounts for leases in accordance with ASC 842. January 1, 2019, 842, 840 not 842. not January 1, 2019. not 842 not The Company has operating leases for office space, manufacturing facilities and certain company vehicles and equipment. The leases have remaining lease terms of one 12 not may September 30, 2019 not The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease assets, current operating lease liabilities and long-term operating lease liabilities in the Consolidated Balance Sheets and are recognized based on the present value of lease payments over the lease term at commencement date. The majority of the Company’s leases do not Supplemental balance sheet information related to leases was as follows: (in thousands) September 30, 2019 Operating lease assets $ 12,008 Current operating lease liabilities $ 3,364 Long-term operating lease liabilities 9,006 Total operating lease liabilities $ 12,370 Lease expense is recognized on a straight-line basis over the lease term, with variable payments recognized in the period those payments are incurred. The components of lease expense for the periods reported were as follows: (in thousands) Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease cost $ 967 $ 2,984 Variable lease cost 306 811 Total lease cost $ 1,273 $ 3,795 Maturities of operating lease liabilities as of September 30, 2019 842 (in thousands) Operating Leases Year Ending December 31, 2019 (excluding nine months ended September 30, 2019) $ 1,216 2020 3,514 2021 2,770 2022 2,580 2023 1,041 After 2023 2,050 Total future minimum lease payments 13,171 Less interest (801 ) Present value of lease liabilities $ 12,370 As of September 30, 2019 not Weighted average remaining lease term and discount rate was as follows: September 30, 2019 Weighted Average Remaining Lease Term (Years) 4.8 Weighted Average Discount Rate 2.6 % Supplemental cash flow information related to leases was as follows: (in thousands) Nine Months Ended September 30, 2019 Cash paid for amounts included in the measurement of operating lease liabilities: Operating cash flows for operating leases $ 3,878 Lease assets obtained in exchange for new operating lease liabilities 1,837

Note 9 - Stock-based Compensati

Note 9 - Stock-based Compensation	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	Note 9 Under the Company’s 2012 2012 2012 ten may 2012 may not Employee Stock Purchase Plan The Company’s 2012 six May 15 November 15, first Stock-Based Compensation Expense Stock-based compensation expense was $3.2 million and $3.0 million for the three September 30, 2019 2018 nine September 30, 2019 2018 Stock Options The following table summarizes stock option activity during the nine September 30, 2019 Weighted- Average Stock Options Exercise Price Options outstanding at December 31, 2018 252,616 $ 64.71 Granted 53,708 105.81 Exercised (11,921 ) 56.25 Forfeited (10,833 ) 83.74 Options outstanding at September 30, 2019 283,570 $ 72.12 Exercisable at September 30, 2019 154,539 $ 58.18 The outstanding options generally have a term of ten four five first first The weighted-average grant date fair value of options that were granted during the nine September 30, 2019 The following table provides the assumptions used in the Black-Scholes pricing model valuation of options during the nine September 30, 2019 2018 Nine Months Ended September 30, 2019 2018 Risk-free interest rate 2.35 - 2.58% 2.52 - 3.07% Expected life (years) 6.25 6.25 Expected volatility 42.52 - 42.74% 41.68 - 42.22% Expected dividend yield 0% 0% As of September 30, 2019 Restricted Stock Restricted stock awards are share-settled awards and restrictions lapse ratably over the vesting period, which is generally a period from four five first first The following table summarizes restricted stock activity during the nine September 30, 2019 Weighted- Average Grant Date Restricted Fair Value Stock Per Share Restricted stock at December 31, 2018 323,921 $ 79.85 Granted 114,467 106.41 Restrictions lapsed (95,884 ) 79.32 Forfeited (20,299 ) 86.54 Restricted stock at September 30, 2019 322,205 $ 89.02 As of September 30, 2019 Performance Stock Performance stock units (PSUs) are expressed in terms of a target number of PSUs, with anywhere between 0 percent and 150 percent of that target number capable of being earned and vesting at the end of a three The following table summarizes performance stock activity during the nine September 30, 2019 Weighted- Average Grant Date Performance Fair Value Stock Per Share Performance stock at December 31, 2018 52,140 $ 76.54 Granted 21,434 104.99 Restrictions lapsed - - Performance change (12,854 ) 58.35 Forfeited (2,375 ) 105.37 Performance stock at September 30, 2019 58,345 $ 89.82 As of September 30, 2019 Employee Stock Purchase Plan The following table presents the assumptions used to estimate the fair value of the ESPP during the nine September 30, 2019 2018 Nine Months Ended September 30, 2019 2018 Risk-free interest rate 2.33 - 2.35% 1.48 - 2.06% Expected life (months) 6.00 6.00 Expected volatility 37.36 - 53.57% 24.49 - 31.50% Expected dividend yield 0% 0%

Note 10 - Accumulated Other Com

Note 10 - Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Disclosure of Reclassification Amount [Text Block]	Note 10 Other comprehensive income (loss) is comprised entirely of foreign currency translation adjustments. The following table presents the changes in accumulated other comprehensive income (loss) balances during the three nine September 30, 2019 2018 Three Months Ended Nine Months Ended September 30, September 30, (in thousands) 2019 2018 2019 2018 Foreign currency translation adjustments Balance at beginning of period $ (8,494 ) $ (6,359 ) $ (8,492 ) $ (5,234 ) Other comprehensive income (loss) before reclassifications (2,150 ) (879 ) (2,152 ) (2,004 ) Amounts reclassified from accumulated other comprehensive loss - - - - Net current-period other comprehensive income (loss) (2,150 ) (879 ) (2,152 ) (2,004 ) Balance at end of period $ (10,644 ) $ (7,238 ) $ (10,644 ) $ (7,238 )

Note 11 - Income Taxes

Note 11 - Income Taxes	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 11 The Company is subject to income tax in multiple jurisdictions and the use of estimates is required to determine the provision for income taxes. For the three September 30, 2019 2018 nine September 30, 2019 2018 three September 30, 2019 three September 30, 2019 2018 2018. nine September 30, 2019 nine September 30, 2019 2018 2018. The effective income tax rate for the nine September 30, 2019 The Company had unrecognized tax benefits totaling $4.4 million and $4.1 million as of September 30, 2019 December 31, 2018

Note 12 - Segment Reporting

Note 12 - Segment Reporting	9 Months Ended
	Sep. 30, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 12 The Company’s reportable segments are based on the internal reporting used by the Company’s Chief Executive Officer, who is the chief operating decision maker (CODM), to assess operating performance and make decisions about the allocation of resources. The Corporate Unallocated and Japan category includes non-reportable segments, as well as research and development and general and administrative costs that the Company does not 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 Beginning in 2019, Revenue and income from operations by reportable segment for the three nine September 30, 2019 2018 Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2019 2018 2019 2018 Revenue: United States $ 92,916 $ 90,732 $ 271,877 $ 261,253 Europe 20,721 21,273 62,915 61,431 Japan 3,818 3,425 12,047 10,143 Total revenue $ 117,455 $ 115,430 $ 346,839 $ 332,827 Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2019 2018 2019 2018 Income from Operations: United States $ 28,109 $ 30,479 $ 82,367 $ 88,579 Europe 4,045 5,465 12,022 12,835 Corporate Unallocated and Japan (10,881 ) (10,913 ) (34,095 ) (32,671 ) Total Income from Operations $ 21,273 $ 25,031 $ 60,294 $ 68,743 Total long-lived assets at September 30, 2019 December 31, 2018 September 30, December 31, (in thousands) 2019 2018 Total long-lived assets: United States $ 203,771 $ 185,979 Europe 40,353 34,577 Japan 8,455 7,445 Total Assets $ 252,579 $ 228,001

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements During the first 2019, 2016 02, Leases 842 2018 11, Leases 840, Leases 12 January 1, 2019 Recently Issued Accounting Pronouncements In January 2017, 2017 04, Intangibles – Goodwill and Other December 15, 2019 not In June 2016, 2016 13, Financial Instruments – Credit Losses December 15, 2019 not

Note 3 - Net Income Per Commo_2

Note 3 - Net Income Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, (in thousands, except share and per share amounts) 2019 2018 2019 2018 Net income $ 16,792 $ 20,937 $ 48,469 $ 57,302 Basic - weighted-average shares outstanding: 26,846,030 27,038,585 26,894,420 26,963,205 Effect of dilutive securities: Employee stock options and other 159,311 299,301 178,453 305,106 Diluted - weighted-average shares outstanding: 27,005,341 27,337,886 27,072,873 27,268,311 Net income per share: Basic $ 0.63 $ 0.77 $ 1.80 $ 2.13 Diluted $ 0.62 $ 0.77 $ 1.79 $ 2.10

Note 4 - Goodwill and Other I_2

Note 4 - Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	September 30, 2019 December 31, 2018 Useful Weighted Average (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Life Useful Life Intangible assets with finite lives: Marketing assets $ 930 $ (504 ) $ 426 $ 930 $ (434 ) $ 496 10.0 4.6 Non-compete agreement 270 (218 ) 52 270 (206 ) 64 2.0 - 5.0 3.3 Trade secrets 250 (250 ) - 250 (233 ) 17 5.0 0.0 Trade names 1,080 (945 ) 135 1,080 (540 ) 540 2.0 0.3 Software technology 13,229 (1,933 ) 11,296 12,229 (997 ) 11,232 10.0 8.3 Customer relationships 10,070 (3,721 ) 6,349 10,070 (2,569 ) 7,501 6.0 - 9.0 4.1 Total intangible assets $ 25,829 $ (7,571 ) $ 18,258 $ 24,829 $ (4,979 ) $ 19,850
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	(in thousands) Estimated Remaining 2019 $ 889 2020 3,016 2021 3,016 2022 3,016 2023 2,813 Thereafter 5,508 Total estimated amortization expense $ 18,258

Note 5 - Fair Value Measureme_2

Note 5 - Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	September 30, 2019 December 31, 2018 (in thousands) Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents Money market mutual fund $ 58,563 $ - $ - $ 8,943 $ - $ - Total $ 58,563 $ - $ - $ 8,943 $ - $ -

Note 6 - Marketable Securities

Note 6 - Marketable Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Debt Securities, Held-to-maturity [Table Text Block]	September 30, 2019 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 5,612 $ 11 $ (3 ) $ 5,620 Corporate debt securities 16,503 100 (1 ) 16,602 U.S. government agency securities 8,340 1 (10 ) 8,331 Certificates of deposit/time deposits 1,479 22 (1 ) 1,500 Commercial paper 1,491 - (1 ) 1,490 Total marketable securities $ 33,425 $ 134 $ (16 ) $ 33,543 December 31, 2018 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 17,509 $ 1 $ (33 ) $ 17,477 Corporate debt securities 31,769 - (96 ) 31,673 U.S. government agency securities 16,843 - (88 ) 16,755 Certificates of deposit/time deposits 4,208 - (25 ) 4,183 Total marketable securities $ 70,329 $ 1 $ (242 ) $ 70,088
Investments Classified by Contractual Maturity Date [Table Text Block]	September 30, (in thousands) 2019 Due in one year or less $ 23,642 Due after one year through five years 9,783 Total marketable securities $ 33,425

Note 7 - Inventory (Tables)

Note 7 - Inventory (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, December 31, (in thousands) 2019 2018 Raw materials $ 9,328 $ 9,560 Work in process 304 792 Total inventory 9,632 10,352 Allowance for obsolescence (184 ) (265 ) Inventory, net of allowance $ 9,448 $ 10,087

Note 8 - Leases (Tables)

Note 8 - Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Schedule of Operating Lease Assets and Liabilities [Table Text Block]	(in thousands) September 30, 2019 Operating lease assets $ 12,008 Current operating lease liabilities $ 3,364 Long-term operating lease liabilities 9,006 Total operating lease liabilities $ 12,370
Schedule of Lease Expense [Table Text Block]	(in thousands) Three Months Ended September 30, 2019 Nine Months Ended September 30, 2019 Operating lease cost $ 967 $ 2,984 Variable lease cost 306 811 Total lease cost $ 1,273 $ 3,795
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	(in thousands) Operating Leases Year Ending December 31, 2019 (excluding nine months ended September 30, 2019) $ 1,216 2020 3,514 2021 2,770 2022 2,580 2023 1,041 After 2023 2,050 Total future minimum lease payments 13,171 Less interest (801 ) Present value of lease liabilities $ 12,370
Schedule of Lease Terms and Discount Rates [Table Text Block]	<tbody> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="padding-bottom: 1px; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> <p style="margin: 0pt; text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><b><em style="font-weight: inherit; font-style: normal;">September 30, 2019</em></b></b></p> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="width: 82%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Remaining Lease Term (Years)</p> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">4.8</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Discount Rate</p> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">2.6</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">%</td> </tr> </tbody> </table> " id="sjs-B7" xml:space="preserve"> &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 85%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-right: 7.5%; margin-left: 7.5%;"> &lt;tbody> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="padding-bottom: 1px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> &lt;p style="margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&lt;b>&lt;b>&lt;em style="font-weight: inherit; font-style: normal;">September 30, 2019&lt;/em>&lt;/b>&lt;/b>&lt;/p> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> &lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="width: 82%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Remaining Lease Term (Years)&lt;/p> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">4.8&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"> &lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Discount Rate&lt;/p> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">2.6&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">%&lt;/td> &lt;/tr> &lt;/tbody> &lt;/table>
Schedule of Lease Cash Flow Information [Table Text Block]	<tbody> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="width: 83%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">(in thousands)</p> </td> <td style="padding-bottom: 1px; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td colspan="2" style="text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> <p style="margin: 0pt; text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><b><b>Nine Months Ended </b></b></b></p> <p style="margin: 0pt; text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><b><b>September 30, 2019</b></b></b></p> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Cash paid for amounts included in the measurement of operating lease liabilities:</p> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="padding-left: 9pt; font-family: "Times New Roman", Times, serif; font-size: 10pt;">Operating cash flows for operating leases</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="width: 1%; padding-left: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0px;">$</td> <td style="width: 14%; text-align: right; padding-left: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0px;">3,878</td> <td style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> <td style="margin: 0px; padding: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt;">Lease assets obtained in exchange for new operating lease liabilities</td> <td style="margin: 0px; padding: 0px; width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="margin: 0px; padding: 0px; width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> <td style="margin: 0px; padding: 0px; width: 14%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt;">1,837</td> <td style="margin: 0px; padding: 0px; width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt;"> </td> </tr> </tbody> </table> " id="sjs-B8" xml:space="preserve"> &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 90%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-right: 5%; margin-left: 5%;"> &lt;tbody> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="width: 83%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">(in thousands)&lt;/p> &lt;/td> &lt;td style="padding-bottom: 1px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> &lt;p style="margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&lt;b>&lt;b>&lt;b>Nine Months Ended &lt;/b>&lt;/b>&lt;/b>&lt;/p> &lt;p style="margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&lt;b>&lt;b>&lt;b>September 30, 2019&lt;/b>&lt;/b>&lt;/b>&lt;/p> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> &lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Cash paid for amounts included in the measurement of operating lease liabilities:&lt;/p> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="padding-left: 9pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Operating cash flows for operating leases&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="width: 1%; padding-left: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0px;">$&lt;/td> &lt;td style="width: 14%; text-align: right; padding-left: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0px;">3,878&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"> &lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(204, 238, 255);"> &lt;td style="margin: 0px; padding: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Lease assets obtained in exchange for new operating lease liabilities&lt;/td> &lt;td style="margin: 0px; padding: 0px; width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="margin: 0px; padding: 0px; width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;td style="margin: 0px; padding: 0px; width: 14%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">1,837&lt;/td> &lt;td style="margin: 0px; padding: 0px; width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> &lt;/td> &lt;/tr> &lt;/tbody> &lt;/table>

Note 9 - Stock-based Compensa_2

Note 9 - Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Weighted- Average Stock Options Exercise Price Options outstanding at December 31, 2018 252,616 $ 64.71 Granted 53,708 105.81 Exercised (11,921 ) 56.25 Forfeited (10,833 ) 83.74 Options outstanding at September 30, 2019 283,570 $ 72.12 Exercisable at September 30, 2019 154,539 $ 58.18
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Nine Months Ended September 30, 2019 2018 Risk-free interest rate 2.35 - 2.58% 2.52 - 3.07% Expected life (years) 6.25 6.25 Expected volatility 42.52 - 42.74% 41.68 - 42.22% Expected dividend yield 0% 0%
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	Weighted- Average Grant Date Restricted Fair Value Stock Per Share Restricted stock at December 31, 2018 323,921 $ 79.85 Granted 114,467 106.41 Restrictions lapsed (95,884 ) 79.32 Forfeited (20,299 ) 86.54 Restricted stock at September 30, 2019 322,205 $ 89.02
Schedule of Nonvested Performance-based Units Activity [Table Text Block]	Weighted- Average Grant Date Performance Fair Value Stock Per Share Performance stock at December 31, 2018 52,140 $ 76.54 Granted 21,434 104.99 Restrictions lapsed - - Performance change (12,854 ) 58.35 Forfeited (2,375 ) 105.37 Performance stock at September 30, 2019 58,345 $ 89.82
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Nine Months Ended September 30, 2019 2018 Risk-free interest rate 2.33 - 2.35% 1.48 - 2.06% Expected life (months) 6.00 6.00 Expected volatility 37.36 - 53.57% 24.49 - 31.50% Expected dividend yield 0% 0%

Note 10 - Accumulated Other C_2

Note 10 - Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, (in thousands) 2019 2018 2019 2018 Foreign currency translation adjustments Balance at beginning of period $ (8,494 ) $ (6,359 ) $ (8,492 ) $ (5,234 ) Other comprehensive income (loss) before reclassifications (2,150 ) (879 ) (2,152 ) (2,004 ) Amounts reclassified from accumulated other comprehensive loss - - - - Net current-period other comprehensive income (loss) (2,150 ) (879 ) (2,152 ) (2,004 ) Balance at end of period $ (10,644 ) $ (7,238 ) $ (10,644 ) $ (7,238 )

Note 12 - Segment Reporting (Ta

Note 12 - Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2019
Notes Tables
Income from Operations by Geographic Area [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2019 2018 2019 2018 Income from Operations: United States $ 28,109 $ 30,479 $ 82,367 $ 88,579 Europe 4,045 5,465 12,022 12,835 Corporate Unallocated and Japan (10,881 ) (10,913 ) (34,095 ) (32,671 ) Total Income from Operations $ 21,273 $ 25,031 $ 60,294 $ 68,743
Long-lived Assets by Geographic Areas [Table Text Block]	September 30, December 31, (in thousands) 2019 2018 Total long-lived assets: United States $ 203,771 $ 185,979 Europe 40,353 34,577 Japan 8,455 7,445 Total Assets $ 252,579 $ 228,001
Operating Segments [Member]
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2019 2018 2019 2018 Revenue: United States $ 92,916 $ 90,732 $ 271,877 $ 261,253 Europe 20,721 21,273 62,915 61,431 Japan 3,818 3,425 12,047 10,143 Total revenue $ 117,455 $ 115,430 $ 346,839 $ 332,827

Note 2 - Recent Accounting Pr_2

Note 2 - Recent Accounting Pronouncements (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset	$ 12,008		$ 0
Operating Lease, Liability, Total	$ 12,370
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 13,100
Operating Lease, Liability, Total		$ 13,100

Note 3 - Net Income Per Commo_3

Note 3 - Net Income Per Common Share - Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Net income	$ 16,792	$ 16,166	$ 15,511	$ 20,937	$ 18,314	$ 18,051	$ 48,469	$ 57,302
Basic - weighted-average shares outstanding: (in shares)	26,846,030			27,038,585			26,894,420	26,963,205
Employee stock options and other (in shares)	159,311			299,301			178,453	305,106
Diluted - weighted-average shares outstanding: (in shares)	27,005,341			27,337,886			27,072,873	27,268,311
Basic (in dollars per share)	$ 0.63			$ 0.77			$ 1.80	$ 2.13
Diluted (in dollars per share)	$ 0.62			$ 0.77			$ 1.79	$ 2.10

Note 4 - Goodwill and Other I_3

Note 4 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Goodwill, Period Increase (Decrease), Total	$ 0		$ 0
Amortization of Intangible Assets, Total	$ 900	$ 800	$ 2,600	$ 2,400

Note 4 - Goodwill and Other I_4

Note 4 - Goodwill and Other Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Gross	$ 25,829	$ 24,829
Accumulated Amortization	(7,571)	(4,979)
Net	18,258	19,850
Marketing-Related Intangible Assets [Member]
Gross	930	930
Accumulated Amortization	(504)	(434)
Net	$ 426	496
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	4 years 7 months 6 days
Noncompete Agreements [Member]
Gross	$ 270	270
Accumulated Amortization	(218)	(206)
Net	$ 52	64
Weighted average useful life remaining (Year)	3 years 3 months 18 days
Noncompete Agreements [Member] | Minimum [Member]
Useful Life (Year)	2 years
Noncompete Agreements [Member] | Maximum [Member]
Useful Life (Year)	5 years
Trade Secrets [Member]
Gross	$ 250	250
Accumulated Amortization	(250)	(233)
Net	$ 0	17
Useful Life (Year)	5 years
Weighted average useful life remaining (Year)	0 years
Trade Names [Member]
Gross	$ 1,080	1,080
Accumulated Amortization	(945)	(540)
Net	$ 135	540
Useful Life (Year)	2 years
Weighted average useful life remaining (Year)	3 months 18 days
Computer Software, Intangible Asset [Member]
Gross	$ 13,229	12,229
Accumulated Amortization	(1,933)	(997)
Net	$ 11,296	11,232
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	8 years 3 months 18 days
Customer Relationships [Member]
Gross	$ 10,070	10,070
Accumulated Amortization	(3,721)	(2,569)
Net	$ 6,349	$ 7,501
Weighted average useful life remaining (Year)	4 years 1 month 6 days
Customer Relationships [Member] | Minimum [Member]
Useful Life (Year)	6 years
Customer Relationships [Member] | Maximum [Member]
Useful Life (Year)	9 years

Note 4 - Goodwill and Other I_5

Note 4 - Goodwill and Other Intangible Assets - Estimated Aggregated Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Remaining 2019	$ 889
2020	3,016
2021	3,016
2022	3,016
2023	2,813
Thereafter	5,508
Total estimated amortization expense	$ 18,258	$ 19,850

Note 5 - Fair Value Measureme_3

Note 5 - Fair Value Measurements - Fair Value of Financial Assets Measured on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Inputs, Level 1 [Member]
Money market mutual fund	$ 58,563	$ 8,943
Total	58,563	8,943
Fair Value, Inputs, Level 2 [Member]
Money market mutual fund	0	0
Total	0	0
Fair Value, Inputs, Level 3 [Member]
Money market mutual fund	0	0
Total	$ 0	$ 0

Note 6 - Marketable Securitie_2

Note 6 - Marketable Securities - Short-term and Long-term Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost	$ 33,425	$ 70,329
Unrealized Gains	134	1
Unrealized Losses	(16)	(242)
Fair Value	33,543	70,088
Bank Time Deposits [Member]
Amortized Cost	1,479	4,208
Unrealized Gains	22	0
Unrealized Losses	(1)	(25)
Fair Value	1,500	4,183
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	5,612	17,509
Unrealized Gains	11	1
Unrealized Losses	(3)	(33)
Fair Value	5,620	17,477
Corporate Debt Securities [Member]
Amortized Cost	16,503	31,769
Unrealized Gains	100	0
Unrealized Losses	(1)	(96)
Fair Value	16,602	31,673
US Government Agencies Debt Securities [Member]
Amortized Cost	8,340	16,843
Unrealized Gains	1	0
Unrealized Losses	(10)	(88)
Fair Value	8,331	$ 16,755
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Amortized Cost	1,491
Unrealized Gains	0
Unrealized Losses	(1)
Fair Value	$ 1,490

Note 6 - Marketable Securitie_3

Note 6 - Marketable Securities - Balance of Held-to-maturity Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Due in one year or less	$ 23,642
Due after one year through five years	9,783
Total marketable securities	$ 33,425	$ 70,329

Note 7 - Inventory - Inventory

Note 7 - Inventory - Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Raw materials	$ 9,328	$ 9,560
Work in process	304	792
Total inventory	9,632	10,352
Allowance for obsolescence	(184)	(265)
Inventory, net of allowance	$ 9,448	$ 10,087

Note 8 - Leases (Details Textua

Note 8 - Leases (Details Textual) Pure in Thousands, $ in Thousands	Sep. 30, 2019USD ($)	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Operating Lease, Right-of-Use Asset	$ 12,008		$ 0
Operating Lease, Liability, Total	$ 12,370
Lessee, Financial Lease, Liability, Number of Leases	0
Lessee, Operating Lease, Lease Not yet Commenced, Number of Leases	0
Minimum [Member] | Office Space, Manufacturing Facilities, and Certain Company Vehicles and Equipment [Member]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member] | Office Space, Manufacturing Facilities, and Certain Company Vehicles and Equipment [Member]
Lessee, Operating Lease, Term of Contract	10 years
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset		$ 13,100
Operating Lease, Liability, Total		$ 13,100

Note 8 - Leases - Balance Sheet

Note 8 - Leases - Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating lease assets	$ 12,008	$ 0
Current operating lease liabilities	3,364	0
Long-term operating lease liabilities	9,006	$ 0
Total operating lease liabilities	$ 12,370

Note 8 - Leases - Lease Expense

Note 8 - Leases - Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Operating lease cost	$ 967	$ 2,984
Variable lease cost	306	811
Total lease cost	$ 1,273	$ 3,795

Note 8 - Leases - Maturities of

Note 8 - Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
2019 (excluding nine months ended September 30, 2019)	$ 1,216
2020	3,514
2021	2,770
2022	2,580
2023	1,041
After 2023	2,050
Total future minimum lease payments	13,171
Less interest	(801)
Present value of lease liabilities	$ 12,370

Note 8 - Leases - Weighted Aver

Note 8 - Leases - Weighted Average Remaining Terms and Discount Rates (Details)	Sep. 30, 2019
Weighted Average Remaining Lease Term (Years) (Year)	4 years 9 months 18 days
Weighted Average Discount Rate	2.60%

Note 8 - Leases - Cash Flow Inf

Note 8 - Leases - Cash Flow Information (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019USD ($)
Operating cash flows for operating leases	$ 3,878
Lease assets obtained in exchange for new operating lease liabilities	$ 1,837

Note 9 - Stock-based Compensa_3

Note 9 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement, Expense	$ 3.2	$ 3	$ 9.7	$ 8
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 47.84
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	4.2		$ 4.2
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			2 years 9 months 18 days
Share-based Payment Arrangement, Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Share-based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			5 years
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date			15.00%
Employee Stock Purchase Plan, Offering Period			6 months
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent			85.00%
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	24.4		$ 24.4
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			2 years 9 months 18 days
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			4 years
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			5 years
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period			3 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 2.7		$ 2.7
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition			1 year 10 months 24 days
Percentage of Target Number Capable of Being Earned and Vesting, Lower Limit	0.00%		0.00%
Percentage of Target Number Capable of Being Earned and Vesting, Upper Limit	150.00%		150.00%

Note 9 - Stock-based Compensa_4

Note 9 - Stock-based Compensation - Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Options outstanding (in shares) | shares	252,616
Options outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 64.71
Granted (in shares) | shares	53,708
Granted, weighted-average exercise price (in dollars per share) | $ / shares	$ 105.81
Exercised (in shares) | shares	(11,921)
Exercised, weighted-average exercise price (in dollars per share) | $ / shares	$ 56.25
Forfeited (in shares) | shares	(10,833)
Forfeited, weighted-average exercise price (in dollars per share) | $ / shares	$ 83.74
Options outstanding (in shares) | shares	283,570
Options outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 72.12
Options exercisable (in shares) | shares	154,539
Options exercisable, weighted-average exercise price (in dollars per share) | $ / shares	$ 58.18

Note 9 - Stock-based Compensa_5

Note 9 - Stock-based Compensation - Assumptions Used in the Black-Scholes Option Pricing Model (Details) - Share-based Payment Arrangement, Option [Member]	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Expected life (Year)	6 years 3 months	6 years 3 months
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Risk-free interest rate	2.35%	2.52%
Expected volatility	42.52%	41.68%
Maximum [Member]
Risk-free interest rate	2.58%	3.07%
Expected volatility	42.74%	42.22%

Note 9 - Stock-based Compensa_6

Note 9 - Stock-based Compensation - Restricted Stock Options (Details) - Restricted Stock [Member]	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Restricted stock (in shares) | shares	323,921
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 79.85
Granted (in shares) | shares	114,467
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 106.41
Restrictions lapsed (in shares) | shares	(95,884)
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 79.32
Forfeited (in shares) | shares	(20,299)
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 86.54
Restricted stock (in shares) | shares	322,205
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 89.02

Note 9 - Stock-based Compensa_7

Note 9 - Stock-based Compensation - Performance Stock (Details) - Performance Shares [Member]	9 Months Ended
	Sep. 30, 2019$ / sharesshares
Restricted stock (in shares) | shares	52,140
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 76.54
Granted (in shares) | shares	21,434
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 104.99
Restrictions lapsed (in shares) | shares	0
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 0
Performance change (in shares) | shares	(12,854)
Performance change, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 58.35
Forfeited (in shares) | shares	(2,375)
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 105.37
Restricted stock (in shares) | shares	58,345
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 89.82

Note 9 - Stock-based Compensa_8

Note 9 - Stock-based Compensation - Assumptions Used to Estimate the Fair Value of the ESPP (Details) - ESPP [Member]	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Expected life (Month)	6 months	6 months
Expected dividend yield	0.00%	0.00%
Minimum [Member]
Risk-free interest rate	2.33%	1.48%
Expected volatility	37.36%	24.49%
Maximum [Member]
Risk-free interest rate	2.35%	2.06%
Expected volatility	53.57%	31.50%

Note 10 - Accumulated Other C_3

Note 10 - Accumulated Other Comprehensive Loss - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Balance	$ 558,113	$ 506,253	$ 541,497	$ 461,215
Balance	564,097	531,206	564,097	531,206
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(8,494)	(6,359)	(8,492)	(5,234)
Other comprehensive income (loss) before reclassifications	(2,150)	(879)	(2,152)	(2,004)
Amounts reclassified from accumulated other comprehensive loss	0	0	0	0
Net current-period other comprehensive income (loss)	(2,150)	(879)	(2,152)	(2,004)
Balance	$ (10,644)	$ (7,238)	$ (10,644)	$ (7,238)

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Expense (Benefit), Total	$ 4,709	$ 4,484	$ 13,391	$ 12,817
Effective Income Tax Rate Reconciliation, Percent, Total	21.90%	17.60%	21.60%	18.30%
Effective Income Tax Rate, Increase (Decrease), Percentage	4.30%		3.30%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Unrecognized Tax Benefits, Ending Balance	$ 4,400		$ 4,400		$ 4,100

Note 12 - Segment Reporting - R

Note 12 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 117,455	$ 115,430	$ 346,839	$ 332,827
Operating Segments [Member]
Revenue	117,455	115,430	346,839	332,827
Operating Segments [Member] | United States Segment [Member]
Revenue	92,916	90,732	271,877	261,253
Operating Segments [Member] | Europe Segment [Member]
Revenue	20,721	21,273	62,915	61,431
Operating Segments [Member] | Japan Segment [Member]
Revenue	$ 3,818	$ 3,425	$ 12,047	$ 10,143

Note 12 - Segment Reporting - I

Note 12 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income from operations	$ 21,273	$ 25,031	$ 60,294	$ 68,743
Operating Segments [Member] | United States Segment [Member]
Income from operations	28,109	30,479	82,367	88,579
Operating Segments [Member] | Europe Segment [Member]
Income from operations	4,045	5,465	12,022	12,835
Operating Segments [Member] | Corporate Unallocated and Japan Segment[Member]
Income from operations	(10,881)	(10,913)	(34,095)	(32,671)
Corporate and Reconciling Items [Member]
Income from operations	$ 21,273	$ 25,031	$ 60,294	$ 68,743

Note 12 - Segment Reporting - L

Note 12 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Long-lived assets	$ 252,579	$ 228,001
Operating Segments [Member] | United States Segment [Member]
Long-lived assets	203,771	185,979
Operating Segments [Member] | Europe Segment [Member]
Long-lived assets	40,353	34,577
Operating Segments [Member] | Japan Segment [Member]
Long-lived assets	$ 8,455	$ 7,445