Derivatives and Other Financial Instruments (Details 1) (Foreign Currency Exchange Contracts, Other Expense: Loss on foreign currency exchange rate, Not designated as hedging instrument, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Foreign Currency Exchange Contracts | Other Expense: Loss on foreign currency exchange rate | Not designated as hedging instrument
Derivatives, Fair Value [Line Items]
Derivative gain (loss) on derivative net	$ (6)	$ (12)	$ (13)	$ (15)