Loans and Related Allowance for Loan Losses (Age Analysis of Past Due Status of Loans, Excluding PCI Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 1,058,323	$ 993,705
Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	854,925	791,290
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	191,183	188,722
Consumer Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	11,163	12,048
All Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,052	1,645
Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	223,538	216,268
Commercial [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	396,858	379,904
Construction and Land Development [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	146,566	120,413
Second Mortgages [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	6,639	6,778
Multifamily [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	72,978	59,557
Agriculture [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	8,346	8,370
Loans Excluding PCI Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	5,292	9,500
Past Due	9,619	13,254
Current	1,048,704	980,451
Total Loans	1,058,323	993,705
Loans Excluding PCI Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	3,381	3,754
Loans Excluding PCI Loans [Member] | 90+ Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	946
Loans Excluding PCI Loans [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	5,223	7,951
Past Due	7,478	11,615
Current	847,447	779,675
Total Loans	854,925	791,290
Loans Excluding PCI Loans [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,255	3,664
Loans Excluding PCI Loans [Member] | Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	62	1,549
Past Due	2,093	1,629
Current	189,090	187,093
Total Loans	191,183	188,722
Loans Excluding PCI Loans [Member] | Commercial Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,085	80
Loans Excluding PCI Loans [Member] | Commercial Loans [Member] | 90+ Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	946
Loans Excluding PCI Loans [Member] | Consumer Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	7
Past Due	48	10
Current	11,115	12,038
Total Loans	11,163	12,048
Loans Excluding PCI Loans [Member] | Consumer Installment Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	41	10
Loans Excluding PCI Loans [Member] | All Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual
Past Due
Current	1,052	1,645
Total Loans	1,052	1,645
Loans Excluding PCI Loans [Member] | All Other Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due
Loans Excluding PCI Loans [Member] | Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,378	1,257
Past Due	2,686	1,752
Current	220,852	214,516
Total Loans	223,538	216,268
Loans Excluding PCI Loans [Member] | Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	1,308	495
Loans Excluding PCI Loans [Member] | Commercial [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,006	2,123
Past Due	1,558	2,674
Current	395,300	377,230
Total Loans	396,858	379,904
Loans Excluding PCI Loans [Member] | Commercial [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	552	551
Loans Excluding PCI Loans [Member] | Construction and Land Development [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	376	4,571
Past Due	542	4,630
Current	146,024	115,783
Total Loans	146,566	120,413
Loans Excluding PCI Loans [Member] | Construction and Land Development [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	166	59
Loans Excluding PCI Loans [Member] | Second Mortgages [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual
Past Due	229
Current	6,410	6,778
Total Loans	6,639	6,778
Loans Excluding PCI Loans [Member] | Second Mortgages [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	229
Loans Excluding PCI Loans [Member] | Multifamily [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	2,463
Past Due	2,463	2,559
Current	70,515	56,998
Total Loans	72,978	59,557
Loans Excluding PCI Loans [Member] | Multifamily [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		2,559
Loans Excluding PCI Loans [Member] | Agriculture [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual
Past Due
Current	8,346	8,370
Total Loans	8,346	8,370
Loans Excluding PCI Loans [Member] | Agriculture [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due