CONSOLIDATED COMPREHENSIVE INCOME (LOSS) STATEMENTS - 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)	$ 2,669	$ 959	$ (3,397)	$ 23,031
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(5,457)	(3,778)	(5,557)	(5,190)
Comprehensive income (loss)	$ (2,788)	$ (2,819)	$ (8,954)	$ 17,841