Shareholders' Equity - Components Of Accumulated OCI (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative foreign currency translation adjustment	$ (67,548)	$ (43,010)
Unrealized loss on hedges, net	(18,026)	(27,891)
Accumulated other comprehensive loss	(85,574)	(70,901)
Deferred income taxes	$ 9,800	$ 15,100