Loans and Allowance (Troubled Debts Restructured) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) loan	Mar. 31, 2018 USD ($) loan
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan		3
Pre-Modification Outstanding Recorded Balance		$ 138
Post-Modification Outstanding Recorded Balance		$ 140
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan		1
Pre-Modification Outstanding Recorded Balance		$ 61
Post-Modification Outstanding Recorded Balance		$ 61
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	3
Pre-Modification Outstanding Recorded Balance	$ 10	$ 47
Post-Modification Outstanding Recorded Balance	$ 10	$ 59
Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	1
Pre-Modification Outstanding Recorded Balance	$ 7	$ 36
Post-Modification Outstanding Recorded Balance	$ 7	$ 36
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1
Pre-Modification Outstanding Recorded Balance	$ 17
Post-Modification Outstanding Recorded Balance	$ 17
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1
Pre-Modification Outstanding Recorded Balance	$ 8
Post-Modification Outstanding Recorded Balance	$ 8