Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total Cost	$ 60,225	$ 58,949
Accumulated Depreciation and Amortization	(33,287)	(31,509)
Net Premises and Equipment	26,938	27,440
Land and Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Total Cost	35,017	34,609
Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total Cost	23,604	22,879
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total Cost	$ 1,604	$ 1,461