CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 161,148	$ (11,627)	$ (45,192)
Other comprehensive income (loss):
Foreign currency translation adjustments	(1,665)	1,398	(364)
Comprehensive income (loss)	$ 159,483	$ (10,229)	$ (45,556)