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Intangibles (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Intangibles [Abstract]      
Intangibles, net $ 61,996 $ 3,031  
Amortization expense on intangible assets $ 11,866 $ 886 $ 1,100