v3.10.0.1

Immaterial Correction of Prior Period Financial Statements - Revisions (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income before income taxes	$ 83,361	$ 44,130	$ 41,418
Provision for income taxes	(18,221)	(30,075)	(12,178)
Net income	$ 65,140	$ 14,055	$ 29,240
Basic (in dollars per share)	$ 2.11	$ 0.47	$ 1.01
Diluted (in dollars per share)	$ 2.06	$ 0.46	$ 0.96
Basic weighted average shares outstanding (in shares)	30,854	29,791	28,976
Diluted weighted average shares outstanding (in shares)	31,578	30,799	30,414
Unrealized gain (loss) on investments in marketable available for sale securities	$ 366	$ (558)	$ (61)
Unrealized (loss) gain on foreign currency translation adjustments	(8,882)	1,529	843
Other comprehensive (loss) income, before tax	(8,516)	971	782
Income tax (provision) benefit related to items of other comprehensive income	(146)	140	24
Other comprehensive (loss) income, net of tax	(8,662)	1,111	806
Comprehensive income	56,478	15,166	30,046
Accumulated earnings	$ (207,521)	$ (125,788)		$ (142,382)
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accumulated earnings			17,900
Scenario, Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Income before income taxes			41,418
Provision for income taxes			(11,165)
Net income			$ 30,253
Basic (in dollars per share)			$ 1.04
Diluted (in dollars per share)			$ 0.99
Basic weighted average shares outstanding (in shares)			28,976
Diluted weighted average shares outstanding (in shares)			30,414
Unrealized gain (loss) on investments in marketable available for sale securities			$ (61)
Unrealized (loss) gain on foreign currency translation adjustments			843
Other comprehensive (loss) income, before tax			782
Income tax (provision) benefit related to items of other comprehensive income			24
Other comprehensive (loss) income, net of tax			806
Comprehensive income			$ 31,059

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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

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Amount before tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount before tax of other comprehensive income (loss) attributable to parent entity.

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