Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 76,238	$ (175,656)	$ (24,295)
Foreign currency translation adjustments	131,861	(319,559)	(148,807)
Comprehensive income (loss)	$ 208,099	$ (495,215)	$ (173,102)