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Accumulated Other Comprehensive Loss (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Accumulated other comprehensive income    
Unrealized (loss) gain on foreign currency hedging, net of tax $ (313) $ 633
Cumulative foreign currency translation adjustments, net of tax 10 (2,363)
Accumulated other comprehensive loss $ (303) $ (1,730)