Derivative Financial Instruments (Pre-tax Impact of Derivative Instruments as Recorded in Consolidated Statements of Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	$ 933	$ 364	$ 1,129	$ (215)
Amount of Gain or (Loss) Reclassified from OCI into Income (Effective Portion)	(201)	(113)	(443)	(752)
Amount of gain or (loss) recognized in income on derivative not designated as hedging instruments	0	67	0	(162)
Interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	763	(10)	760	(95)
Gain (loss) on interest rate derivative instruments not designated as hedging instruments	0	0	0	0
Interest rate contracts | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from OCI into Income (Effective Portion)	(228)	(343)	(460)	(743)
Foreign currency exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	170	374	369	(120)
Foreign currency exchange contracts | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Reclassified from OCI into Income (Effective Portion)	27	230	17	(9)
Foreign currency exchange contracts | Other
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments	$ 0	$ 67	$ 0	$ (162)