Loans and Allowance (Newly Restructured Loans by Type) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term			$ 61	$ 72
Total modification			61	72
Consumer [Member] | First Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term	$ 38	$ 26	38	26
Combination	63		250	188
Total modification	101	$ 26	288	214
Consumer [Member] | Second Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term			35	3
Combination			59
Total modification			94	$ 3
Consumer [Member] | Automobile Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term			10
Total modification			10
Consumer [Member] | Boat/RVs [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term	15		34
Combination	21		21
Total modification	36		55
Consumer [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term	4		4
Total modification	$ 4		$ 4