Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Consolidated Balance Sheets Parenthetical
Securities held to maturity fair values	$ 61,877	$ 62,754	$ 61,512
Preferred stock, shares authorized	5,000,000	5,000,000	5,000,000
Preferred stock, shares issued	63,500	63,500	63,500
Preferred stock, shares outstanding	63,500	63,500	63,500
common stock, shares authorized	40,000,000	40,000,000	40,000,000
Common stock, shares issued	17,013,008	16,909,820	16,884,617
Common stock, shares outstanding	17,013,008	16,909,820	16,884,617