Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Allowance for loan losses	$ 10,841	$ 13,189
Preferred stock, par value	$ 1	$ 1
Liquidation preference	$ 1,000	$ 1,000
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, shares issued	21,750	21,750
Preferred stock, shares outstanding	21,750	21,750
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	2,883,936	2,879,158
Common stock, shares outstanding	2,883,936	2,879,158
Net tax effect of accumulated other comprehensive income	$ 36	$ 89