Derivatives and Other Financial Instruments - Schedule Of Cash Flow Hedges (Details) (Foreign Exchange Forward Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended		15 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013
Foreign Exchange Forward Contracts [Member]
Derivative [Line Items]
Amount of Loss Recognized in AOCI on Derivative (Effective Portion)		$ (180)	$ (31)
Amount of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	$ (72)	$ (166)	$ 714	$ 251