CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CONSOLIDATED BALANCE SHEETS
Loans, allowance for loan losses (in dollars)	$ 31,728	$ 32,227
Preferred stock, par value	$ 0.00	$ 0.00
Preferred stock, Authorized shares	400,000	400,000
Preferred stock, Issued shares	57,000	57,000
Preferred stock, Outstanding shares	15,100	15,100
Preferred stock, Aggregate liquidation preference (in dollars)	$ 15,100	$ 15,100
Common stock, stated value (in dollars per share)	$ 0.50	$ 0.50
Common stock, Authorized shares	100,000,000	100,000,000
Common stock, Issued shares	20,866,227	20,859,027
Common stock, Outstanding shares	20,326,725	20,304,525
Treasury stock, shares	539,502	554,502