Derivatives (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	$ (976)	$ (667)
Designated as Hedging Instrument [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Liabilities	0	(667)
Prepaid Assets and Other Current Assets [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Assets	304	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	276	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	276	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	28	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	0	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	(976)	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)