Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets
Securities held to maturity, fair value (in dollars)	$ 17,864	$ 20,150
Other real estate owned, covered (in dollars)	65,849	69,317
Other real estate owned, non-covered (in dollars)	$ 18,022	$ 17,264
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 2.50	$ 2.50
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	14,039,422	12,793,823
Common stock, shares outstanding	14,039,422	12,793,823