Loans and Allowance (Troubled Debts Restructured) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) loan	Dec. 31, 2015 USD ($) loan	Dec. 31, 2014 USD ($) loan
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	4	6
Pre-Modification Outstanding Recorded Balance	$ 406	$ 2,399	$ 1,229
Post-Modification Outstanding Recorded Balance	$ 406	$ 2,406	$ 1,248
Commercial Real Estate [Member] | Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	1
Pre-Modification Outstanding Recorded Balance	$ 83	$ 155
Post-Modification Outstanding Recorded Balance	83	155
Commercial Segment [Member] | Construction Loans [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Balance	$ 83	$ 155
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan		1	2
Pre-Modification Outstanding Recorded Balance		$ 88	$ 193
Post-Modification Outstanding Recorded Balance		$ 83	$ 223
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	14	8	12
Pre-Modification Outstanding Recorded Balance	$ 881	$ 287	$ 1,493
Post-Modification Outstanding Recorded Balance	$ 911	$ 287	$ 1,139
Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	3	5
Pre-Modification Outstanding Recorded Balance	$ 39	$ 51	$ 58
Post-Modification Outstanding Recorded Balance	$ 39	$ 51	$ 59
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	2
Pre-Modification Outstanding Recorded Balance	$ 4	$ 25
Post-Modification Outstanding Recorded Balance	$ 4	$ 25
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	3
Pre-Modification Outstanding Recorded Balance	$ 56
Post-Modification Outstanding Recorded Balance	$ 56
Consumer [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	2
Pre-Modification Outstanding Recorded Balance	$ 7
Post-Modification Outstanding Recorded Balance	$ 7