Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (3,393)	$ 5,239
Other comprehensive income (loss)
Foreign currency translation adjustment	4,915	(23,010)
Total other comprehensive income (loss), net of income tax	4,915	(23,010)
Comprehensive income (loss)	$ 1,522	$ (17,771)