Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 382	$ 3,258	$ 1,680	$ 6,670
Other comprehensive income (loss), net of tax:
Foreign currency translation gain (loss)	290	1,175	345	(1,093)
Comprehensive income	$ 672	$ 4,433	$ 2,025	$ 5,577