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Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Statement of Financial Position [Abstract]      
Securities held to maturity fair values $ 61,226 $ 62,754 $ 58,526
Preferred stock, shares authorized 5,000,000 5,000,000 5,000,000
Preferred stock, shares issued 63,500 63,500 65,000
Preferred stock, shares outstanding 63,500 63,500 65,000
common stock, shares authorized 40,000,000 40,000,000 40,000,000
Common stock, shares issued 16,937,641 16,909,820 16,824,489
Common stock, shares outstanding 16,937,641 16,909,820 16,824,489