Premises and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 62,699,000	$ 62,528,000
Less accumulated depreciation	37,297,000	35,296,000
Total premises and equipment, net	25,402,000	27,232,000
Depreciation expense	3,300,000	3,200,000	3,200,000
Land and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	6,020,000	5,974,000
Premises and Improvements [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	32,429,000	32,043,000
Furniture, Fixtures and Equipment [Member]
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 24,250,000	$ 24,511,000