Loans and Related Allowance for Loan Losses (Age Analysis of Past Due Status of Loans, Excluding PCI Loans) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	$ 4,225	$ 5,292
Past Due	7,066	9,619
Current	1,158,244	1,048,704
Total Loans	1,165,310	1,058,323
30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,841	3,381
90+ Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		946
Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	3,506	5,223
Past Due	5,964	7,478
Current	885,120	847,447
Total Loans		854,925
Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	2,458	2,255
Commercial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	707	62
Past Due	1,069	2,093
Current	261,886	189,090
Total Loans		191,183
Commercial Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	362	1,085
Commercial Loans [Member] | 90+ Days Past Due and Accruing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due		946
Consumer Installment Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	12	7
Past Due	33	48
Current	10,224	11,115
Total Loans		11,163
Consumer Installment Loans [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	21	41
All Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,014	1,052
Total Loans		1,052
Residential 1-4 Family [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,697	1,378
Past Due	3,696	2,686
Current	202,091	220,852
Total Loans		223,538
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	1,999	1,308
Commercial [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	636	1,006
Past Due	866	1,558
Current	443,057	395,300
Total Loans		396,858
Commercial [Member] | Mortgage Loans on Real Estate [Member] | 30-89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	230	552
Construction and Land Development [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	1,122	376
Past Due	1,122	542
Current	150,407	146,024
Total Loans		146,566
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
Second Mortgages [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past Due	229	229
Current	5,907	6,410
Total Loans		6,639
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	229
Multifamily [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual		2,463
Past Due		2,463
Current	76,587	70,515
Total Loans		72,978
Agriculture [Member] | Mortgage Loans on Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual	51
Past Due	51
Current	$ 7,071	8,346
Total Loans		$ 8,346