Premises and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 67,445	$ 73,036
Accumulated depreciation and amortization	29,179	32,744
Total	38,266	40,292
Depreciation Expense	2,655	2,495	$ 2,196
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	9,933	5,837
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	37,229	44,484
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	16,145	18,340
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	4,109	4,089
Construction in progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 29	$ 286