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Income Taxes (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Income Taxes [Abstract]        
Income Tax Expense (Benefit) $ 1,632 $ 1,882 $ 6,001 $ 5,527
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate     31.50% 34.90%