Schedule of Fair Value Hedging Instruments (Details) (Designated as Hedging Instrument, USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss)
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 3,818	$ (2,232)	$ 1,426	$ (3,830)
Cost of Sales | Forward Contracts | Fair Value Hedges
Derivative Instruments, Gain (Loss)
Gain (Loss) on Fair Value Hedges Recognized in Earnings	$ 3,818	$ (2,232)	$ 1,426	$ (3,830)