Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - 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)	$ 4,996	$ 1,043	$ 4,815	$ (6,722)
Foreign currency translation adjustment	5	(2)	11	(3)
Comprehensive income (loss)	$ 5,001	$ 1,041	$ 4,826	$ (6,725)