Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Securities held to maturity, fair value	$ 125,875	$ 139,171
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	6,651,760	6,651,760
Common Stock, Shares, Outstanding	6,338,158	6,327,226
Treasury stock, shares	313,602	324,534
Deferred compensation arrangements, shares	294,937	308,670
Preferred Class A Non-Voting [Member]
Preferred stock, shares authorized	200,000	200,000
Preferred stock, shares outstanding	0	0
Preferred Class B Voting [Member]
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares outstanding	0	0