Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ 53,639	$ (79,030)
Foreign currency translation adjustments	60,693	(174,450)
Comprehensive income (loss)	$ 114,332	$ (253,480)