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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Comprehensive income (loss)      
Unrealized gains on hedging contracts, tax effect $ 142 $ 114 $ 304
Pensions, tax effect $ 489 $ 1 $ 204