Proto Labs (PRLB) 10-Q 30 Apr 19 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 25, 2019
Document Information [Line Items]
Entity Registrant Name	Proto Labs Inc
Entity Central Index Key	0001443669
Trading Symbol	prlb
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		26,848,544
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 85,350	$ 85,046
Short-term marketable securities	35,045	46,750
Accounts receivable, net of allowance for doubtful accounts of $939 and $919 as of March 31, 2019 and December 31, 2018, respectively	61,535	59,155
Inventory	9,356	10,087
Prepaid expenses and other current assets	8,613	8,567
Income taxes receivable	2,852	5,757
Total current assets	202,751	215,362
Property and equipment, net	234,211	228,001
Goodwill	128,752	128,752
Other intangible assets, net	18,979	19,850
Long-term marketable securities	18,262	23,579
Operating lease assets	11,965
Other long-term assets	3,676	3,441
Total assets	618,596	618,985
Current liabilities
Accounts payable	16,672	17,411
Accrued compensation	10,129	18,130
Accrued liabilities and other	11,027	16,702
Current operating lease liabilities	3,021
Income taxes payable	594	491
Total current liabilities	41,443	52,734
Long-term operating lease liabilities	9,107
Long-term deferred tax liabilities	20,549	20,162
Other long-term liabilities	4,702	4,592
Total liabilities	75,801	77,488
Shareholders' equity
Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and outstanding 0 shares as of each of March 31, 2019 and December 31, 2018
Common stock, $0.001 par value, authorized 150,000,000 shares; issued and outstanding 26,846,981 and 26,984,747 shares as of March 31, 2019 and December 31, 2018, respectively	27	27
Additional paid-in capital	259,611	258,502
Retained earnings	291,173	291,460
Accumulated other comprehensive loss	(8,016)	(8,492)
Total shareholders' equity	542,795	541,497
Total liabilities and shareholders' equity	$ 618,596	$ 618,985

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Allowance for doubtful accounts	$ 939	$ 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)	26,846,981	26,984,747
Common stock, shares outstanding (in shares)	26,846,981	26,984,747

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statements of Operations:
Revenue	$ 113,452	$ 107,745
Cost of revenue	54,592	49,837
Gross profit	58,860	57,908
Operating expenses
Marketing and sales	18,577	16,572
Research and development	8,013	6,665
General and administrative	12,822	12,943
Total operating expenses	39,412	36,180
Income from operations	19,448	21,728
Other income, net	213	178
Income before income taxes	19,661	21,906
Provision for income taxes	4,150	3,855
Net income	$ 15,511	$ 18,051
Net income per share:
Basic (in dollars per share)	$ 0.58	$ 0.67
Diluted (in dollars per share)	$ 0.57	$ 0.66
Shares used to compute net income per share:
Basic (in shares)	26,963,366	26,879,388
Diluted (in shares)	27,177,039	27,197,099
Comprehensive Income (net of tax)
Comprehensive income	$ 15,987	$ 20,444

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)
Repurchases of common stock
Net income			18,051		18,051
Foreign currency translation adjustment				2,393	2,393
Comprehensive income					20,444
Balance (in shares) at Mar. 31, 2018	26,931,546
Balance at Mar. 31, 2018	$ 27	246,282	244,208	(2,841)	487,676
Other comprehensive income
Foreign currency translation adjustment				2,393	2,393
Comprehensive income					20,444
Balance (in shares) at Mar. 31, 2018	26,931,546
Balance at Mar. 31, 2018	$ 27	246,282	244,208	(2,841)	487,676
Revenue recognition transition adjustment			1,460		$ 1,460
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
Foreign currency translation adjustment				476	476
Comprehensive income					$ 15,987
Balance (in shares) at Mar. 31, 2019	26,846,981				26,846,981
Balance at Mar. 31, 2019	$ 27	259,611	291,173	(8,016)	$ 542,795
Other comprehensive income
Foreign currency translation adjustment				476	476
Comprehensive income					$ 15,987
Balance (in shares) at Mar. 31, 2019	26,846,981				26,846,981
Balance at Mar. 31, 2019	$ 27	$ 259,611	$ 291,173	$ (8,016)	$ 542,795

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net income	$ 15,511	$ 18,051
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,439	6,259
Stock-based compensation expense	3,040	2,307
Deferred taxes	379	612
Amortization of held-to-maturity securities	16	163
Other	236	106
Changes in operating assets and liabilities:
Accounts receivable	(2,386)	(4,013)
Inventories	739	807
Prepaid expenses and other	(211)	(1,707)
Income taxes	3,006	2,387
Accounts payable	(805)	2,291
Accrued liabilities and other	(8,962)	(1,118)
Net cash provided by operating activities	18,002	26,145
Investing activities
Purchases of property, equipment and other capital assets	(12,735)	(25,513)
Cash used for acquisitions, net of cash acquired		(90)
Purchases of other assets and investments	(4,000)
Purchases of marketable securities		(3,389)
Proceeds from maturities of marketable securities	17,006	13,551
Net cash provided by (used in) investing activities	271	(15,441)
Financing activities
Payments on debt		(5,000)
Proceeds from exercises of stock options	174	2,880
Purchases of shares withheld for tax obligations	(594)	(628)
Repurchases of common stock	(17,309)
Net cash used in financing activities	(17,729)	(2,748)
Effect of exchange rate changes on cash and cash equivalents	(240)	432
Net increase in cash and cash equivalents	304	8,388
Cash and cash equivalents, beginning of period	85,046	36,707
Cash and cash equivalents, end of period	$ 85,350	$ 45,095

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	3 Months Ended
	Mar. 31, 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	3 Months Ended
	Mar. 31, 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 $13.1 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, 2020 not

Note 3 - Net Income Per Common

Note 3 - Net Income Per Common Share	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Earnings Per Share [Text Block]	Note 3 – Net Income per Common Share Basic net income per share is computed based on the weighted-average number of common shares outstanding. Diluted net income per share is computed based on the weighted-average number of common shares outstanding, increased by the number of additional shares that would have been outstanding had potentially dilutive common shares been issued and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially dilutive shares. Potentially dilutive shares of common stock include stock options, restricted stock units and restricted stock awards granted under stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan. Performance stock units are excluded from the calculation of dilutive potential common shares until the performance conditions have been satisfied. The table below sets forth the computation of basic and diluted net income per share: Three Months Ended March 31, (in thousands, except share and per share amounts) 2019 2018 Net income $ 15,511 $ 18,051 Basic - weighted-average shares outstanding: 26,963,366 26,879,388 Effect of dilutive securities: Employee stock options and other 213,673 317,711 Diluted - weighted-average shares outstanding: 27,177,039 27,197,099 Net income per share: Basic $ 0.58 $ 0.67 Diluted $ 0.57 $ 0.66

Note 4 - Goodwill and Other Int

Note 4 - Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	Note 4 – Goodwill and Other Intangible Assets There were no three March 31, 2019. Intangible Assets other than goodwill at March 31, 2019 December 31, 2018 March 31, 2019 December 31, 2018 Useful Weighted Average (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Life Useful Life Remaining (in years) Intangible Assets with finite lives: Marketing assets $ 930 $ (457 ) $ 473 $ 930 $ (434 ) $ 496 10.0 5.1 Non-compete agreement 270 (210 ) 60 270 (206 ) 64 2.0 - 5.0 3.8 Trade secrets 250 (246 ) 4 250 (233 ) 17 5.0 0.1 Trade names 1,080 (675 ) 405 1,080 (540 ) 540 2.0 0.8 Software technology 12,229 (1,309 ) 10,920 12,229 (997 ) 11,232 10.0 8.8 Customer relationships 10,070 (2,953 ) 7,117 10,070 (2,569 ) 7,501 6.0 - 9.0 4.6 Total intangible assets $ 24,829 $ (5,850 ) $ 18,979 $ 24,829 $ (4,979 ) $ 19,850 Amortization expense for intangible assets was $0.9 $0.8 three March 31, 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 $ 2,580 2020 2,895 2021 2,895 2022 2,895 2023 2,691 Thereafter 5,023 Total estimated amortization expense $ 18,979

Note 5 - Fair Value Measurement

Note 5 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Fair Value Disclosures [Text Block]	Note 5 – Fair Value Measurements 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 March 31, 2019 December 31, 2018 March 31, 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 $ 9,155 $ - $ - $ 8,943 $ - $ - Total $ 9,155 $ - $ - $ 8,943 $ - $ -

Note 6 - Marketable Securities

Note 6 - Marketable Securities	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Investment [Text Block]	Note 6 – Marketable Securities The Company invests in short-term and long-term agency, municipal, corporate and other debt securities. The securities are categorized as held-to-maturity and are recorded at amortized cost. Categorization as held-to-maturity is based on the Company’s ability and intent to hold these securities to maturity. The following table summarizes information regarding the Company’s short-term and long-term marketable securities as of March 31, 2019 December 31, 2018: March 31, 2019 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 10,825 $ 7 $ (6 ) $ 10,826 Corporate debt securities 24,513 52 (27 ) 24,538 U.S. government agency securities 14,505 - (40 ) 14,465 Certificates of deposit/time deposits 3,464 10 (10 ) 3,464 Total marketable securities $ 53,307 $ 69 $ (83 ) $ 53,293 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 March 31, 2019 may may March 31, (in thousands) 2019 Due in one year or less $ 35,045 Due after one year through five years 18,262 Total marketable securities $ 53,307

Note 7 - Inventory

Note 7 - Inventory	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Inventory Disclosure [Text Block]	Note 7 – Inventory Inventory consists primarily of raw materials, which are recorded at the lower of cost or market using the average-cost method, which approximates first first The Company’s inventory consisted of the following as of the dates indicated: March 31, December 31, (in thousands) 2019 2018 Raw materials $ 9,132 $ 9,560 Work in process 412 792 Total inventory 9,544 10,352 Allowance for obsolescence (188 ) (265 ) Inventory, net of allowance $ 9,356 $ 10,087

Note 8 - Leases

Note 8 - Leases	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	Note 8 – Leases 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 $13.1 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 10 12 not may March 31, 2019, not no 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) March 31, 2019 Operating lease assets $ 11,965 Current operating lease liabilities $ 3,021 Long-term operating lease liabilities 9,107 Total operating lease liabilities $ 12,128 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 March 31, 2019 Operating lease cost $ 1,070 Variable lease cost 239 Total lease cost $ 1,309 Maturities of operating lease liabilities as of March 31, 2019 ( 842 (in thousands) Operating Leases Year Ending December 31, 2019 (excluding three months ended March 31, 2019) $ 2,706 2020 2,627 2021 2,307 2022 2,256 2023 1,028 After 2023 2,098 Total future minimum lease payments 13,022 Less interest (894 ) Present value of lease liabilities $ 12,128 As of March 31, 2019, no not Weighted average remaining lease term and discount rate was as follows: March 31, 2019 Weighted Average Remaining Lease Term (Years) 5.38 Weighted Average Discount Rate 2.6 % Supplemental cash flow information related to leases was as follows: (in thousands) Three Months Ended March 31, 2019 Cash paid for amounts included in the measurement of operating lease liabilities: Operating cash flows for operating leases $ 1,197 Lease assets obtained in exchange for new operating lease liabilities 13,049

Note 9 - Stock-based Compensati

Note 9 - Stock-based Compensation	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	Note 9 – Stock-Based Compensation Under the Company’s 2012 2012 2012 ten may 2012 may not Employee Stock Purchase Plan The Company’s 2012 15 six May 15 November 15, 85 first Stock-Based Compensation Expense Stock-based compensation expense was $3.0 $2.3 three March 31, 2019 2018, Stock Options The following table summarizes stock option activity during the three March 31, 2019: Weighted- Average Stock Options Exercise Price Options outstanding at December 31, 2018 252,616 $ 64.71 Granted 30,046 104.99 Exercised (3,010 ) 57.85 Forfeited (680 ) 96.20 Options outstanding at March 31, 2019 278,972 $ 69.04 Exercisable at March 31, 2019 157,602 $ 56.70 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 three March 31, 2019 $47.76. The following table provides the assumptions used in the Black-Scholes pricing model valuation of options during the three March 31, 2019 2018: Three Months Ended March 31, 2019 2018 Risk-free interest rate 2.58 % 2.52 % Expected life (years) 6.25 6.25 Expected volatility 42.74 % 42.22 % Expected dividend yield 0 % 0 % As of March 31, 2019, $4.3 3.0 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 three March 31, 2019: Weighted- Average Grant Date Restricted Fair Value Stock Per Share Restricted stock at December 31, 2018 323,921 $ 79.85 Granted 27,476 105.03 Restrictions lapsed (22,420 ) 71.40 Forfeited (3,692 ) 108.51 Restricted stock at March 31, 2019 325,285 $ 82.35 As of March 31, 2019, $21.3 3.0 Performance Stock Performance stock units (PSUs) are expressed in terms of a target number of PSUs, with anywhere between 0 150 three The following table summarizes performance stock activity during the three March 31, 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 - - Forfeited - - Performance stock at March 31, 2019 73,574 $ 84.83 As of March 31, 2019, $4.0 2.3 Employee Stock Purchase Plan The following table presents the assumptions used to estimate the fair value of the ESPP during the three March 31, 2019 2018: Three Months Ended March 31, 2019 2018 Risk-free interest rate 2.33 % 1.48 % Expected life (months) 6.00 6.00 Expected volatility 37.36 % 24.49 % Expected dividend yield 0 % 0 %

Note 10 - Accumulated Other Com

Note 10 - Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Disclosure of Reclassification Amount [Text Block]	Note 1 0 – Accumulated Other Comprehensive Loss Other comprehensive income (loss) is comprised entirely of foreign currency translation adjustments. The following table presents the changes in accumulated other comprehensive income (loss) balances during the three March 31, 2019 2018: Three Months Ended March 31, (in thousands) 2019 2018 Foreign currency translation adjustments Balance at beginning of period $ (8,492 ) $ (5,234 ) Other comprehensive income before reclassifications 476 2,393 Amounts reclassified from accumulated other comprehensive income - - Net current-period other comprehensive income 476 2,393 Balance at end of period $ (8,016 ) $ (2,841 )

Note 11 - Income Taxes

Note 11 - Income Taxes	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Income Tax Disclosure [Text Block]	Note 1 1 – Income Taxes The Company is subject to income tax in multiple jurisdictions and the use of estimates is required to determine the provision for income taxes. For the three March 31, 2019 2018, $4.2 $3.9 three March 31, 2019 21.1 17.6 3.5 three March 31, 2019 2018 The effective income tax rate for the three March 31, 2019 21.0 The Company had reserves against unrecognized tax benefits totaling $4.3 $4.1 March 31, 2019 December 31, 2018,

Note 12 - Segment Reporting

Note 12 - Segment Reporting	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	Note 1 2 – Segment Reporting The Company’s reportable segments are based on the internal reporting used by the Company’s Chief Executive Officer, who is the chief operating decision maker (CODM), to assess operating performance and make decisions about the allocation of resources. The Corporate Unallocated and Japan category includes non-reportable segments, as well as research and development and general and administrative costs that the Company does not 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 March 31, 2019 2018 Three Months Ended March 31, (in thousands) 2019 2018 Revenue: United States $ 87,811 $ 84,167 Europe 21,254 19,945 Japan 4,387 3,633 Total revenue $ 113,452 $ 107,745 Three Months Ended March 31, (in thousands) 2019 2018 Income from Operations: United States $ 26,310 $ 28,843 Europe 4,221 3,361 Corporate Unallocated and Japan (11,083 ) (10,476 ) Total Income from Operations $ 19,448 $ 21,728 Total long-lived assets at March 31, 2019 December 31, 2018 March 31, December 31, (in thousands) 2019 2018 Total long-lived assets: United States $ 191,296 $ 185,979 Europe 35,465 34,577 Japan 7,450 7,445 Total Assets $ 234,211 $ 228,001

Significant Accounting Policies

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 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 $13.1 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, 2020 not

Note 3 - Net Income Per Commo_2

Note 3 - Net Income Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended March 31, (in thousands, except share and per share amounts) 2019 2018 Net income $ 15,511 $ 18,051 Basic - weighted-average shares outstanding: 26,963,366 26,879,388 Effect of dilutive securities: Employee stock options and other 213,673 317,711 Diluted - weighted-average shares outstanding: 27,177,039 27,197,099 Net income per share: Basic $ 0.58 $ 0.67 Diluted $ 0.57 $ 0.66

Note 4 - Goodwill and Other I_2

Note 4 - Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	March 31, 2019 December 31, 2018 Useful Weighted Average (in thousands) Gross Accumulated Amortization Net Gross Accumulated Amortization Net Life Useful Life Remaining (in years) Intangible Assets with finite lives: Marketing assets $ 930 $ (457 ) $ 473 $ 930 $ (434 ) $ 496 10.0 5.1 Non-compete agreement 270 (210 ) 60 270 (206 ) 64 2.0 - 5.0 3.8 Trade secrets 250 (246 ) 4 250 (233 ) 17 5.0 0.1 Trade names 1,080 (675 ) 405 1,080 (540 ) 540 2.0 0.8 Software technology 12,229 (1,309 ) 10,920 12,229 (997 ) 11,232 10.0 8.8 Customer relationships 10,070 (2,953 ) 7,117 10,070 (2,569 ) 7,501 6.0 - 9.0 4.6 Total intangible assets $ 24,829 $ (5,850 ) $ 18,979 $ 24,829 $ (4,979 ) $ 19,850
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	(in thousands) Estimated Remaining 2019 $ 2,580 2020 2,895 2021 2,895 2022 2,895 2023 2,691 Thereafter 5,023 Total estimated amortization expense $ 18,979

Note 5 - Fair Value Measureme_2

Note 5 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	March 31, 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 $ 9,155 $ - $ - $ 8,943 $ - $ - Total $ 9,155 $ - $ - $ 8,943 $ - $ -

Note 6 - Marketable Securities

Note 6 - Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Debt Securities, Held-to-maturity [Table Text Block]	March 31, 2019 (in thousands) Cost Unrealized Gains Unrealized Losses Fair Value U.S. municipal securities $ 10,825 $ 7 $ (6 ) $ 10,826 Corporate debt securities 24,513 52 (27 ) 24,538 U.S. government agency securities 14,505 - (40 ) 14,465 Certificates of deposit/time deposits 3,464 10 (10 ) 3,464 Total marketable securities $ 53,307 $ 69 $ (83 ) $ 53,293 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]	March 31, (in thousands) 2019 Due in one year or less $ 35,045 Due after one year through five years 18,262 Total marketable securities $ 53,307

Note 7 - Inventory (Tables)

Note 7 - Inventory (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Inventory, Current [Table Text Block]	March 31, December 31, (in thousands) 2019 2018 Raw materials $ 9,132 $ 9,560 Work in process 412 792 Total inventory 9,544 10,352 Allowance for obsolescence (188 ) (265 ) Inventory, net of allowance $ 9,356 $ 10,087

Note 8 - Leases (Tables)

Note 8 - Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Schedule of Operating Lease Assets and Liabilities [Table Text Block]	(in thousands) March 31, 2019 Operating lease assets $ 11,965 Current operating lease liabilities $ 3,021 Long-term operating lease liabilities 9,107 Total operating lease liabilities $ 12,128
Schedule of Lease Expense [Table Text Block]	(in thousands) Three Months Ended March 31, 2019 Operating lease cost $ 1,070 Variable lease cost 239 Total lease cost $ 1,309
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	(in thousands) Operating Leases Year Ending December 31, 2019 (excluding three months ended March 31, 2019) $ 2,706 2020 2,627 2021 2,307 2022 2,256 2023 1,028 After 2023 2,098 Total future minimum lease payments 13,022 Less interest (894 ) Present value of lease liabilities $ 12,128
Schedule of Lease Terms and Discount Rates [Table Text Block]	<table border="0" cellpadding="0" cellspacing="0" style="; text-indent: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-right: 20%; min-; min-width: 700px;"> <tr style="vertical-align: bottom;"> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td> </td> </tr> <tr style="vertical-align: bottom;"> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> </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; background-color: rgb(255, 255, 255);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> </div><div style=" margin: 0pt; text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">March 31, 2019</div></div></div> </td> <td style="padding-bottom: 1px; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> </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;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Remaining Lease Term (Years)</div> </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;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">5.38</div></td> <td nowrap="nowrap" 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;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Discount Rate</div> </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;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2.6</div></td> <td nowrap="nowrap" style="width: 1%; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;">%</td> </tr> <tr style="vertical-align: bottom;"> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td> </td> </tr> </table></div>" id="sjs-B7">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table border="0" cellpadding="0" cellspacing="0" style="; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-right: 20%; min-; min-width: 700px;"> &lt;tr style="vertical-align: bottom;"> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom;"> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&nbsp;&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; background-color: rgb(255, 255, 255);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> &lt;/div>&lt;div style=" margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">March 31, 2019&lt;/div>&lt;/div>&lt;/div> &lt;/td> &lt;td style="padding-bottom: 1px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&nbsp;&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;div 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;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&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;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">5.38&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&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;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Weighted Average Discount Rate&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&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;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">2.6&lt;/div>&lt;/td> &lt;td nowrap="nowrap" 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;"> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>
Schedule of Lease Cash Flow Information [Table Text Block]	<table border="0" cellpadding="0" cellspacing="0" style="; text-indent: 0px; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-right: 20%; min-; min-width: 700px;"> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;"> </td> <td> </td> </tr> <tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> <td style="width: 82%; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; background-color: rgb(255, 255, 255);">(in thousands)</div> </td> <td style="font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> </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; background-color: rgb(255, 255, 255);"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> </div><div style=" margin: 0pt; text-align: center; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;"><div style="display: inline; font-weight: bold;">Three Months Ended March 31, 2019</div></div></div></div></div> </td> <td style="padding-bottom: 1px; font-family: "Times New Roman", Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> </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;"> <div 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:</div> </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="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 18pt;">Operating cash flows for operating leases</div> </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; margin-left: 0pt;">$</td> <td style="width: 15%; text-align: right; font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-left: 0pt;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">1,197</div></td> <td nowrap="nowrap" 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="font-family: "Times New Roman", Times, serif; font-size: 10pt;"> <div style=" font-family: "Times New Roman", Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Lease assets obtained in exchange for new operating lease liabilities</div> </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;"><div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">13,049</div></td> <td nowrap="nowrap" 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="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td style="padding-bottom: 1px; border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;"> </td> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> </td> <td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;"> </td> <td style="padding-bottom: 1px;"> </td> </tr> </table></div>" id="sjs-B8">&lt;div style="display: inline; font-family: times new roman; font-size: 10pt">&lt;table border="0" cellpadding="0" cellspacing="0" style="; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-right: 20%; min-; min-width: 700px;"> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td style="border-top-color: rgb(0, 0, 0); border-top-width: thin; border-top-style: solid;">&nbsp;&lt;/td> &lt;td>&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="width: 82%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);"> &lt;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; background-color: rgb(255, 255, 255);">(in thousands)&lt;/div> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&nbsp;&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; background-color: rgb(255, 255, 255);">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;"> &lt;/div>&lt;div style=" margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">&lt;div style="display: inline; font-weight: bold;">Three Months Ended March 31, 2019&lt;/div>&lt;/div>&lt;/div>&lt;/div>&lt;/div> &lt;/td> &lt;td style="padding-bottom: 1px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; background-color: rgb(255, 255, 255);">&nbsp;&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;div 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;/div> &lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&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;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt; margin-left: 18pt;">Operating cash flows for operating leases&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&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;td style="width: 15%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">1,197&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&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;div style=" font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;">Lease assets obtained in exchange for new operating lease liabilities&lt;/div> &lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&lt;/td> &lt;td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&nbsp;&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;">&lt;div style="display: inline; font-style: italic; font-weight: inherit; font-style: normal;">13,049&lt;/div>&lt;/td> &lt;td nowrap="nowrap" style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&nbsp;&lt;/td> &lt;/tr> &lt;tr style="vertical-align: bottom; background-color: rgb(255, 255, 255);"> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="padding-bottom: 1px; border-bottom-color: rgb(0, 0, 0); border-bottom-width: thin; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="border-bottom-color: rgb(0, 0, 0); border-bottom-width: 1px; border-bottom-style: solid;">&nbsp;&lt;/td> &lt;td style="padding-bottom: 1px;">&nbsp;&lt;/td> &lt;/tr> &lt;/table>&lt;/div>

Note 9 - Stock-based Compensa_2

Note 9 - Stock-based Compensation (Tables)	3 Months Ended
	Mar. 31, 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 30,046 104.99 Exercised (3,010 ) 57.85 Forfeited (680 ) 96.20 Options outstanding at March 31, 2019 278,972 $ 69.04 Exercisable at March 31, 2019 157,602 $ 56.70
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Three Months Ended March 31, 2019 2018 Risk-free interest rate 2.58 % 2.52 % Expected life (years) 6.25 6.25 Expected volatility 42.74 % 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 27,476 105.03 Restrictions lapsed (22,420 ) 71.40 Forfeited (3,692 ) 108.51 Restricted stock at March 31, 2019 325,285 $ 82.35
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 - - Forfeited - - Performance stock at March 31, 2019 73,574 $ 84.83
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Three Months Ended March 31, 2019 2018 Risk-free interest rate 2.33 % 1.48 % Expected life (months) 6.00 6.00 Expected volatility 37.36 % 24.49 % Expected dividend yield 0 % 0 %

Note 10 - Accumulated Other C_2

Note 10 - Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Comprehensive Income (Loss) [Table Text Block]	Three Months Ended March 31, (in thousands) 2019 2018 Foreign currency translation adjustments Balance at beginning of period $ (8,492 ) $ (5,234 ) Other comprehensive income before reclassifications 476 2,393 Amounts reclassified from accumulated other comprehensive income - - Net current-period other comprehensive income 476 2,393 Balance at end of period $ (8,016 ) $ (2,841 )

Note 12 - Segment Reporting (Ta

Note 12 - Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2019
Notes Tables
Income from Operations by Geographic Area [Table Text Block]	Three Months Ended March 31, (in thousands) 2019 2018 Income from Operations: United States $ 26,310 $ 28,843 Europe 4,221 3,361 Corporate Unallocated and Japan (11,083 ) (10,476 ) Total Income from Operations $ 19,448 $ 21,728
Long-lived Assets by Geographic Areas [Table Text Block]	March 31, December 31, (in thousands) 2019 2018 Total long-lived assets: United States $ 191,296 $ 185,979 Europe 35,465 34,577 Japan 7,450 7,445 Total Assets $ 234,211 $ 228,001
Operating Segments [Member]
Notes Tables
Revenue from External Customers by Geographic Areas [Table Text Block]	Three Months Ended March 31, (in thousands) 2019 2018 Revenue: United States $ 87,811 $ 84,167 Europe 21,254 19,945 Japan 4,387 3,633 Total revenue $ 113,452 $ 107,745

Note 2 - Recent Accounting Pr_2

Note 2 - Recent Accounting Pronouncements (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Lease, Right-of-Use Asset	$ 11,965
Operating Lease, Liability, Total	$ 12,128
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
	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 15,511	$ 18,051
Basic - weighted-average shares outstanding: (in shares)	26,963,366	26,879,388
Effect of dilutive securities:
Employee stock options and other (in shares)	213,673	317,711
Diluted - weighted-average shares outstanding: (in shares)	27,177,039	27,197,099
Basic (in dollars per share)	$ 0.58	$ 0.67
Diluted (in dollars per share)	$ 0.57	$ 0.66

Note 4 - Goodwill and Other I_3

Note 4 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Goodwill, Period Increase (Decrease), Total	$ 0
Amortization of Intangible Assets, Total	$ 900	$ 800

Note 4 - Goodwill and Other I_4

Note 4 - Goodwill and Other Intangible Assets - Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Gross	$ 24,829	$ 24,829
Accumulated amortization	(5,850)	(4,979)
Net	18,979	19,850
Marketing-Related Intangible Assets [Member]
Gross	930	930
Accumulated amortization	(457)	(434)
Net	$ 473	496
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	5 years 36 days
Noncompete Agreements [Member]
Gross	$ 270	270
Accumulated amortization	(210)	(206)
Net	$ 60	64
Weighted average useful life remaining (Year)	3 years 292 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	(246)	(233)
Net	$ 4	17
Useful Life (Year)	5 years
Weighted average useful life remaining (Year)	36 days
Trade Names [Member]
Gross	$ 1,080	1,080
Accumulated amortization	(675)	(540)
Net	$ 405	540
Useful Life (Year)	2 years
Weighted average useful life remaining (Year)	292 days
Computer Software, Intangible Asset [Member]
Gross	$ 12,229	12,229
Accumulated amortization	(1,309)	(997)
Net	$ 10,920	11,232
Useful Life (Year)	10 years
Weighted average useful life remaining (Year)	8 years 292 days
Customer Relationships [Member]
Gross	$ 10,070	10,070
Accumulated amortization	(2,953)	(2,569)
Net	$ 7,117	$ 7,501
Weighted average useful life remaining (Year)	4 years 219 days
Customer Relationships [Member] | Minimum [Member]
Useful Life (Year)	6 years 328 days
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	Mar. 31, 2019	Dec. 31, 2018
Remaining 2019	$ 2,580
2020	2,895
2021	2,895
2022	2,895
2023	2,691
Thereafter	5,023
Total estimated amortization expense	$ 18,979	$ 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	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents:
Money market mutual fund	$ 9,155	$ 8,943
Total	9,155	8,943
Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents:
Money market mutual fund
Total
Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents:
Money market mutual fund
Total

Note 6 - Marketable Securitie_2

Note 6 - Marketable Securities - Short-term and Long-term Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Amortized Cost	$ 53,307	$ 70,329
Unrealized Gains	69	1
Unrealized Losses	(83)	(242)
Fair Value	53,293	70,088
Bank Time Deposits [Member]
Amortized Cost	3,464	4,208
Unrealized Gains	10
Unrealized Losses	(10)	(25)
Fair Value	3,464	4,183
US States and Political Subdivisions Debt Securities [Member]
Amortized Cost	10,825	17,509
Unrealized Gains	7	1
Unrealized Losses	(6)	(33)
Fair Value	10,826	17,477
Corporate Debt Securities [Member]
Amortized Cost	24,513	31,769
Unrealized Gains	52
Unrealized Losses	(27)	(96)
Fair Value	24,538	31,673
US Government Agencies Debt Securities [Member]
Amortized Cost	14,505	16,843
Unrealized Gains
Unrealized Losses	(40)	(88)
Fair Value	$ 14,465	$ 16,755

Note 6 - Marketable Securitie_3

Note 6 - Marketable Securities - Balance of Held-to-maturity Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Due in one year or less	$ 35,045
Due after one year through five years	18,262
Total marketable securities	$ 53,307	$ 70,329

Note 7 - Inventory - Inventory

Note 7 - Inventory - Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Raw materials	$ 9,132	$ 9,560
Work in process	412	792
Total inventory	9,544	10,352
Allowance for obsolescence	(188)	(265)
Inventory, net of allowance	$ 9,356	$ 10,087

Note 8 - Leases (Details Textua

Note 8 - Leases (Details Textual) xbrli-pure in Thousands, $ in Thousands	Mar. 31, 2019USD ($)	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Operating Lease, Right-of-Use Asset	$ 11,965
Lessee, Financial Lease, Liability, Number of Leases	0
Lessee, Operating Lease, Lease Not yet Commenced, Number of Leases	0
Operating Lease, Liability, Total	$ 12,128
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	Mar. 31, 2019	Dec. 31, 2018
Operating lease assets	$ 11,965
Current operating lease liabilities	3,021
Long-term operating lease liabilities	9,107
Total operating lease liabilities	$ 12,128

Note 8 - Leases - Lease Expense

Note 8 - Leases - Lease Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Operating lease cost	$ 1,070
Variable lease cost	239
Total lease cost	$ 1,309

Note 8 - Leases - Maturities of

Note 8 - Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019USD ($)
2019 (excluding three months ended March 31, 2019)	$ 2,706
2020	2,627
2021	2,307
2022	2,256
2023	1,028
After 2023	2,098
Total future minimum lease payments	13,022
Less interest	(894)
Present value of lease liabilities	$ 12,128

Note 8 - Leases - Weighted Aver

Note 8 - Leases - Weighted Average Remaining Terms and Discount Rates (Details)	Mar. 31, 2019
Weighted Average Remaining Lease Term (Years) (Year)	5 years 138 days
Weighted Average Discount Rate	2.60%

Note 8 - Leases - Cash Flow Inf

Note 8 - Leases - Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Operating cash flows for operating leases	$ 1,197
Lease assets obtained in exchange for new operating lease liabilities	$ 13,049

Note 9 - Stock-based Compensa_3

Note 9 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-based Payment Arrangement, Noncash Expense, Total	$ 3,040	$ 2,307
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 47.76
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	180 days
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	10 years
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 4,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years
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
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total	$ 21,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	3 years
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	$ 4,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 109 days
Percentage of Target Number Capable of Being Earned and Vesting, Lower Limit	0.00%
Percentage of Target Number Capable of Being Earned and Vesting, Upper Limit	150.00%

Note 9 - Stock-based Compensa_4

Note 9 - Stock-based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 31, 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	30,046
Granted, weighted-average exercise price (in dollars per share) | $ / shares	$ 104.99
Exercised (in shares) | shares	(3,010)
Exercised, weighted-average exercise price (in dollars per share) | $ / shares	$ 57.85
Forfeited (in shares) | shares	(680)
Forfeited, weighted-average exercise price (in dollars per share) | $ / shares	$ 96.20
Options outstanding (in shares) | shares	278,972
Options outstanding, weighted-average exercise price (in dollars per share) | $ / shares	$ 69.04
Options exercisable (in shares) | shares	157,602
Options exercisable, weighted-average exercise price (in dollars per share) | $ / shares	$ 56.70

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]	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Risk-free interest rate	2.58%	2.52%
Expected life (Year)	6 years 91 days	6 years 91 days
Expected volatility	42.74%	42.22%
Expected dividend yield	0.00%	0.00%

Note 9 - Stock-based Compensa_6

Note 9 - Stock-based Compensation - Restricted Stock Options (Details) - Restricted Stock [Member]	3 Months Ended
	Mar. 31, 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	27,476
Granted, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 105.03
Restrictions lapsed (in shares) | shares	(22,420)
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 71.40
Forfeited (in shares) | shares	(3,692)
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 108.51
Restricted stock (in shares) | shares	325,285
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 82.35

Note 9 - Stock-based Compensa_7

Note 9 - Stock-based Compensation - Performance Stock (Details) - Performance Shares [Member]	3 Months Ended
	Mar. 31, 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
Restrictions lapsed, weighted-average grant date fair value (in dollars per share) | $ / shares
Performance change (in shares) | shares
Performance change, weighted-average grant date fair value (in dollars per share) | $ / shares
Forfeited (in shares) | shares
Forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares
Restricted stock (in shares) | shares	73,574
Restricted stock, weighted-average grant date fair value (in dollars per share) | $ / shares	$ 84.83

Note 9 - Stock-based Compensa_8

Note 9 - Stock-based Compensation - Assumptions Used to Estimate the Fair Value of the ESPP (Details) - ESPP [Member]	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Risk-free interest rate	2.33%	1.48%
Expected life (Month)	180 days	180 days
Expected volatility	37.36%	24.49%
Expected dividend yield	0.00%	0.00%

Note 10 - Accumulated Other C_3

Note 10 - Accumulated Other Comprehensive Loss - Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Balance	$ 541,497	$ 461,215
Balance	542,795	487,676
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Balance	(8,492)	(5,234)
Other comprehensive income before reclassifications	476	2,393
Amounts reclassified from accumulated other comprehensive income
Net current-period other comprehensive income	476	2,393
Balance	$ (8,016)	$ (2,841)

Note 11 - Income Taxes (Details

Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Expense (Benefit), Total	$ 4,150	$ 3,855
Effective Income Tax Rate Reconciliation, Percent, Total	21.10%	17.60%
Effective Income Tax Rate, Increase (Decrease), Percentage	3.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Unrecognized Tax Benefits, Ending Balance	$ 4,300		$ 4,100

Note 12 - Segment Reporting - R

Note 12 - Segment Reporting - Revenue From Operations by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue:
Revenue	$ 113,452	$ 107,745
Operating Segments [Member] | United States Segment [Member]
Revenue:
Revenue	87,811	84,167
Operating Segments [Member] | Europe Segment [Member]
Revenue:
Revenue	21,254	19,945
Operating Segments [Member] | Japan Segment [Member]
Revenue:
Revenue	$ 4,387	$ 3,633

Note 12 - Segment Reporting - I

Note 12 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income from operations	$ 19,448	$ 21,728
Operating Segments [Member] | United States Segment [Member]
Income from operations	26,310	28,843
Operating Segments [Member] | Europe Segment [Member]
Income from operations	4,221	3,361
Corporate and Reconciling Items [Member] | Corporate Unallocated and Japan Segment[Member]
Income from operations	$ (11,083)	$ (10,476)

Note 12 - Segment Reporting - L

Note 12 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Long-lived assets	$ 234,211	$ 228,001
Operating Segments [Member] | United States Segment [Member]
Long-lived assets	191,296	185,979
Operating Segments [Member] | Europe Segment [Member]
Long-lived assets	35,465	34,577
Operating Segments [Member] | Japan Segment [Member]
Long-lived assets	$ 7,450	$ 7,445