Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Time certificates of deposit least amount	$ 100,000	$ 100,000
Held to Maturity, Fair Value, Total	$ 451,920,000	$ 478,749,000
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	1,000,000	1,000,000
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, shares issued	26,309,887	26,236,352
Common Stock, unvested restricted Stock awards	223,393	230,900
Shares Held in Rabbi Trust	167,287	173,378
Common Stock Outstanding
Common Stock, shares outstanding	26,309,887	26,236,352
Junior Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 147,000	$ 158,000
Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 388,000	$ 411,000