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Financial Assets and Financial Liabilities Measured at Fair Value (Details 2) (Measured on a recurring basis, (Level 2), USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Forward exchange contracts
Fair values for derivatives
Derivative net asset (liability) position	$ 3	$ (3)
Interest-rate swap
Fair values for derivatives
Derivative net asset (liability) position	$ (3,632)	$ 3,268

- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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