Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (3,760)	$ (2,699)	$ 7,564	$ (14,460)
Other comprehensive income (loss), net of taxes:
Foreign currency translation	2,577	(1,614)	1,542	(1,450)
Net change in fair value of interest rate swap	205		(931)
Other comprehensive income (loss)	2,782	(1,614)	611	(1,450)
Comprehensive income (loss)	$ (978)	$ (4,313)	$ 8,175	$ (15,910)