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Income Taxes (Details 3) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Tax provision at statutory rate $ 11,473 $ (14,125) $ 7,354
Increase (decrease) in income taxes resulting from:      
Tax-exempt interest income (818) (831) (852)
Low income housing tax credits (150) (181) (163)
Non-deductible interest expense 15 23 33
State income taxes, net of federal benefit 1,366 (1,714) 910
Change in valuation allowance (3) 31 (5)
Other, net 198 (155) 93
Income tax expense (benefit) $ 12,081 $ (16,952) $ 7,370