Accumulated Other Comprehensive Income (loss) ("OCI") - Components Of Accumulated OCI (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative foreign currency translation adjustment	$ (49,295)	$ (43,010)
Unrealized loss on hedges, net	(23,392)	(27,891)
Accumulated other comprehensive loss	(72,687)	(70,901)
Deferred income taxes	$ 12,700	$ 15,100