Loans and Allowance (Newly Restructured Loans by Type) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term		$ 30
Total modification		30
Commercial Segment [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	49	61	$ 72
Total modification	49	61	72
Consumer [Member] | First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term		38	27
Combination	134	350	297
Total modification	134	388	324
Consumer [Member] | Second Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	7	35	3
Combination	26	59	13
Total modification	33	94	$ 16
Consumer [Member] | Automobile Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	8	30
Combination	17
Total modification	25	30
Consumer [Member] | Boat/RVs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	16	321
Combination	300	27
Total modification	316	348
Consumer [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest Only
Term	10	4
Total modification	$ 10	$ 4