Derivatives (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	$ (316)	$ (667)
Prepaid Assets and Other Current Assets [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	520	1,617
Prepaid Assets and Other Current Assets [Member] | Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	0	327
Prepaid Assets and Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	0	0
Prepaid Assets and Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	0	327
Prepaid Assets and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	520	1,290
Accrued Liabilities [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	(175)	0
Accrued Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	(141)	0
Other Liabilities [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	0	(667)
Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	$ (175)	$ (667)