Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (778)	$ 4,009	$ (2,168)	$ 11,578
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(1,126)	(625)	(1,069)	(1,263)
Comprehensive income (loss)	$ (1,904)	$ 3,384	$ (3,237)	$ 10,315