Condensed 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
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 14,929	$ 11,217	$ (13,154)	$ 28,098
Currency translation adjustment, net of tax	(4,047)	(2,463)	(4,319)	(9,702)
Comprehensive income (loss)	$ 10,882	$ 8,754	$ (17,473)	$ 18,396