Annual report pursuant to Section 13 and 15(d)

Basis of Presentation (Details 1)

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Basis of Presentation (Details 1) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]      
Foreign currency translation adjustment, net of tax $ (38,609) $ (21,852) $ (22,435)
Unrealized loss on derivatives, net of tax 800 (5,433) (961)
Total accumulated other comprehensive income (loss) $ (37,809) $ (27,285) $ (23,396)