Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Time certificates of deposit least amount	$ 100,000
Securities Held to Maturity, fair value	$ 195,454,000	$ 211,494,000
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	1,000,000	1,000,000
Preferred Stock, shares outstanding
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, shares issued	21,666,926	21,499,768
Common Stock, shares outstanding	21,666,926	21,499,768
Common Stock, unvested restricted Stock awards	263,124	235,540
Shares Held in Rabbi Trust	179,004	180,058