Derivative Financial Instruments Derivative Instruments Not Designated as Hedges (Details) (Cross-currency swap agreements [Member], Not designated as hedging instrument [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Derivative instruments not designated as hedging instruments, gain (loss), net	$ 0	$ (155,000)	$ (1,270,000)	$ (1,665,000)
Interest (expense)/income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative Instruments Not Designated as Hedging Instruments	0	(640,000)	(1,184,000)	(2,172,000)
Other income/(loss), net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative Instruments Not Designated as Hedging Instruments	$ 0	$ 485,000	$ (86,000)	$ 507,000