Loans and Allowance (Age Analysis of Past Due Loans Segregated by Class of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 17,473	$ 18,235
Current	1,155,163	1,065,160
Total loans receivable	1,172,636	1,083,395	$ 1,022,388
Total Loans > 90 Days or More and Accruing	237	267
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,220	9,995
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,250	2,034
90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,003	6,206
First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	478,848
Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total loans receivable	71,222
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,781	3,154
Current	300,796	233,741
Total loans receivable	302,577	236,895
Commercial Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	854	922
Commercial Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	142	20
Commercial Real Estate [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	785	2,212
Commercial Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	22,453	15,744
Total loans receivable	22,453	15,744
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	537	580
Current	130,566	122,463
Total loans receivable	131,103	123,043
Commercial Segment [Member] | Commercial and Industrial [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	497	192
Commercial Segment [Member] | Commercial and Industrial [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	32	383
Commercial Segment [Member] | Commercial and Industrial [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8	5
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,018	11,691
Current	466,830	479,760
Total loans receivable	478,848	491,451
Total Loans > 90 Days or More and Accruing	237	267
Consumer [Member] | First Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,789	7,272
Consumer [Member] | First Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,554	1,328
Consumer [Member] | First Mortgage [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,675	3,091
Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	982	1,248
Current	70,240	69,742
Total loans receivable	71,222	70,990
Consumer [Member] | Second Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	512	296
Consumer [Member] | Second Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	166	187
Consumer [Member] | Second Mortgage [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	304	765
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	133	89
Current	18,806	15,391
Total loans receivable	18,939	15,480
Consumer [Member] | Automobile Loan [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	103	89
Consumer [Member] | Automobile Loan [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	25
Consumer [Member] | Automobile Loan [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,894	1,308
Current	139,708	122,313
Total loans receivable	141,602	123,621
Consumer [Member] | Boat/RVs [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,376	1,135
Consumer [Member] | Boat/RVs [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	305	102
Consumer [Member] | Boat/RVs [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	213	71
Consumer [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	128	165
Current	5,764	6,006
Total loans receivable	5,892	6,171
Consumer [Member] | Other [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	89	89
Consumer [Member] | Other [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	26	14
Consumer [Member] | Other [Member] | 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 13	$ 62