Loans and Allowance (Age Analysis of Past Due Loans Segregated by Class of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 22,281	$ 28,022
Current	1,466,667	1,469,234
Total loans receivable	1,488,948	1,497,256	$ 1,186,713
Total Loans > 90 Days or More and Accruing	156	517
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11,809	17,091
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,717	3,023
90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,755	7,908
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,391	6,058
Current	498,850	479,750
Total loans receivable	504,241	485,808
Commercial Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,218	1,145
Commercial Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,751	536
Commercial Real Estate [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	422	4,377
Commercial Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	745	4,694
Current	48,751	48,616
Total loans receivable	49,496	53,310
Commercial Segment [Member] | Construction Loans [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	114	4,633
Commercial Segment [Member] | Construction Loans [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	631	61
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,331	801
Current	164,688	148,558
Total loans receivable	166,019	149,359
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	855	617
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	108	93
Commercial Segment [Member] | Commercial and Industrial [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	368	91
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,799	12,205
Current	406,066	452,334
Total loans receivable	415,865	464,539
Total Loans > 90 Days or More and Accruing	156	517
Consumer [Member] | First Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,731	7,847
Consumer [Member] | First Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,774	1,662
Consumer [Member] | First Mortgage [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,294	2,696
Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	975	687
Current	74,621	76,385
Total loans receivable	75,596	77,072
Consumer [Member] | Second Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	447	353
Consumer [Member] | Second Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	220	114
Consumer [Member] | Second Mortgage [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	308	220
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	736	345
Current	56,371	43,322
Total loans receivable	57,107	43,667
Consumer [Member] | Automobile Loan [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	424	257
Consumer [Member] | Automobile Loan [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	104	16
Consumer [Member] | Automobile Loan [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	208	72
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,059	3,118
Current	210,246	213,490
Total loans receivable	213,305	216,608
Consumer [Member] | Boat/RVs [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,892	2,174
Consumer [Member] | Boat/RVs [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	692	594
Consumer [Member] | Boat/RVs [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	475	350
Consumer [Member] | Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	245	114
Current	7,074	6,779
Total loans receivable	7,319	6,893
Consumer [Member] | Other [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	128	65
Consumer [Member] | Other [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	68	8
Consumer [Member] | Other [Member] | 90 Days Past Due or More [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 49	$ 41