CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Investment securities held to maturity (approximate market value)	$ 84,627	$ 99,427
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	14,341	14,341
Preferred stock, liquidation preference	$ 1,000	$ 1,000
Common stock, stated value	$ 0.83	$ 0.83
Common stock, shares authorized	21,000,000	21,000,000
Common stock, shares issued	9,283,349	9,240,889
Common stock, shares outstanding	8,875,171	8,832,711
Treasury stock, shares	408,178	408,178