Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Equity [Abstract]
Foreign currency translation adjustment	$ 9,979	$ 344
Net unrealized gain (loss) on investments, net of tax	344	(4,379)
Accumulated other comprehensive income (loss)	$ 10,323	$ (4,035)

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Data Type:	xbrli:monetaryItemType
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