CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (11,143)	$ 14,326	$ (64,568)	$ (19,514)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(6,548)	4,845	(5,592)	(18,086)
Total comprehensive income (loss)	$ (17,691)	$ 19,171	$ (70,160)	$ (37,600)