Derivative Instruments and Hedging Activities (Details) (Foreign Exchange Contract [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
(Loss) gain recognized on non-designated derivative instruments:
(Loss) gain recognized on non-designated derivative instruments, total	$ (199)	$ 587
Interest expense [Member]
(Loss) gain recognized on non-designated derivative instruments:
(Loss) gain recognized on non-designated derivative instruments, total	(1,430)	(815)
Foreign exchange loss, net [Member]
(Loss) gain recognized on non-designated derivative instruments:
(Loss) gain recognized on non-designated derivative instruments, total	$ 1,231	$ 1,402