Derivative Instruments and Hedges (Fair Value of Forward Exchange Contracts) (Details) (Not Designated as Hedging Instrument [Member], Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Gain (loss) recognized in income	$ 1,421	$ (4,534)	$ (123)	$ (7,531)