Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 3,258	$ 5,515	$ 6,670	$ 7,379
Other comprehensive income (loss), net of tax:
Interest rate swap loss		(293)		(506)
Foreign currency translation gain (loss)	1,175	(744)	(1,093)	234
Comprehensive income	$ 4,433	$ 4,478	$ 5,577	$ 7,107