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Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Goodwill and Intangible Assets Disclosure [Abstract]    
Goodwill, Subsequent Recognition of Deferred Tax Asset $ 645  
Finite-Lived Intangible Assets, Amortization Expense 12,522 19,777
Goodwill and Intangible Asset Impairment $ 0  
Percentage decrease in fair value that would require step two of quantitative assessment to be performed 12.00%  
Percentage of hypothetical decrease 20.00%