Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Consolidated Balance Sheets
Securities held to maturity, fair value (in dollars)	$ 199,107	$ 213,702
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Authorized shares	20,000,000	20,000,000
Common stock, shares issued	8,975,984	8,923,010
Common stock, shares outstanding	8,973,788	8,907,890
Treasury Stock, shares	2,196	15,120
Net unrealized gain on securities, deferred income taxes (in dollars)	(1,403)	(1,803)
Pension liability, deferred income taxes (in dollars)	2,011	2,036
Net unrealized loss on cash flow hedge, deferred income taxes (in dollars)	$ 59	$ 70