Derivative Instruments And Hedging Activities - Impact of Derivative Instruments Designated as Hedging Instruments on Accumulated OCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	$ 474	$ 4,293	$ 4,973	$ (2,232)
Foreign Exchange Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	674	5,002	6,496	(1,359)
Interest Rate Swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in OCI on Derivatives, Net of Tax (Effective Portion)	$ (200)	$ (709)	$ (1,523)	$ (873)