Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (24,024)	$ 15,767	$ (13,023)	$ 48,168
Other comprehensive income (loss):
Foreign currency translation loss, net	(11,739)	(18,891)	(29,306)	(19,650)
Total comprehensive income (loss)	$ (35,763)	$ (3,124)	$ (42,329)	$ 28,518