CONSOLIDATED STATEMENTS OF CONDITION (unaudited) (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Common stock, stated value	$ 0.83	$ 0.83
Common stock, shares authorized	21,000,000	21,000,000
Common stock, shares issued	9,438,438	9,325,977
Common stock, shares outstanding	9,030,260	8,917,799
Treasury stock, shares	408,178	408,178