Premises and Equipment Class of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total cost	$ 32,905	$ 27,882
Less accumulated depreciation	(11,982)	(11,809)
Premises and equipment, net	20,923	16,073
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	3,922	3,260
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	18,490	14,760
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	10,402	9,053
Construction in progress and deposits on equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 91	$ 809