Financial Instruments and 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
	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in OCI on derivatives (Effective Portion)	$ 195	$ (579)
Amount of gain or (loss) reclassified from OCI into income (Effective Portion)	(242)	(639)
Amount of gain or (loss) recognized in income on derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Amount of gain or (loss) recognized in income on derivative not designated as hedging instruments	0	(229)
Interest Rate Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in OCI on derivatives (Effective Portion)	(3)	(85)
Gain (loss) on interest rate derivative instruments not designated as hedging instruments	0	0
Interest Rate Contract | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from OCI into income (Effective Portion)	(232)	(400)
Interest Rate Contract | Other
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in income on derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) recognized in OCI on derivatives (Effective Portion)	198	(494)
Amount of gain or (loss) recognized in income on derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0
Foreign Exchange Contract | Other
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments	0	(229)
Foreign Exchange Contract | Cost of Sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain or (loss) reclassified from OCI into income (Effective Portion)	$ (10)	$ (239)