Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income (Loss) Attributable to Parent		$ 11,194	$ 6,705
Other comprehensive income (loss), net of tax
Currency translation adjustment	[1]	563	(142)
Total comprehensive income		$ 11,757	$ 6,563

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