Premises and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Subtotal	$ 51,921,000	$ 51,596,000
Less: Accumulated Depreciation and Amortization	29,020,000	27,538,000
Total	22,901,000	24,058,000
Depreciation and Amortization	1,704,000	1,801,000	1,867,000
Total rental expense	391,000	386,000	372,000
Rental income	148,000	130,000	157,000
Land and Building [Member]
Property, Plant and Equipment [Line Items]
Subtotal	32,843,000	32,832,000
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Subtotal	17,024,000	16,710,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Subtotal	$ 2,054,000	$ 2,054,000