CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 951	$ 6,712	$ 2,270	$ 13,312
Other comprehensive income (loss) — foreign currency translation	1,140	(998)	2,555	(2,788)
Comprehensive income	$ 2,091	$ 5,714	$ 4,825	$ 10,524