CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Securities held to maturity, fair value	$ 71,363	$ 73,057
Loans, net allowance for loan losses	$ 14,747	$ 15,172
Preferred stock, par value	$ 2.50	$ 2.50
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	6,102,324	6,078,250
Common stock, shares outstanding	6,039,724	6,015,650
Treasury stock, shares	62,600	62,600