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Income Taxes (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Abstract]    
Tax receivable, federal and state income taxes $ 21,580,000 $ 5,700,000
Income tax rate reconciliation, federal statutory income tax rate 35.00%  
Retained earnings of prior period $ 21,864,000 $ 21,864,000