Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Subtotal	$ 59,638	$ 55,092
Less: Accumulated Depreciation and Amortization	30,409	28,517
Total	29,229	26,575
Depreciation and amortization	1,896	1,685	$ 1,325
Total rental expense	644	604	530
Rental income	102	94	$ 81
Land and Buildings [Member]
Property, Plant and Equipment [Line Items]
Subtotal	37,003	33,530
Furniture, Fixtures, and Equipment [Member]
Property, Plant and Equipment [Line Items]
Subtotal	20,196	19,125
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Subtotal	$ 2,439	$ 2,437