Loans and Allowance for Loan Losses - Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	$ 1,542,074	$ 1,521,252
Non-accrual loans	19,598	18,700
90 Days Past Due And Still Accruing	1	1
Total Non-performing Loans		1,661
Loan Restructuring Modification Member
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	300	300
Commercial, Financial, and Agricultural
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	227,992	244,549
Non-accrual loans	166	121
90 Days Past Due And Still Accruing	0	0
Real Estate Construction - Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	157,860	137,235
Non-accrual loans	83	87
90 Days Past Due And Still Accruing	0	0
Real Estate Mortgage - Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	363,634	361,025
Non-accrual loans	914	685
90 Days Past Due And Still Accruing	0	0
Real Estate Mortgage - Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	725,573	722,729
Non-accrual loans	18,355	17,801
90 Days Past Due And Still Accruing	0	0
Installment and Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans held for investment	22,548	23,619
Non-accrual loans	80	6
90 Days Past Due And Still Accruing	1	1
Non-performing TDRs - 90 days past due
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	18,276	17,664
Loans held for investment	1,322	1,036
Non-accrual loans	19,598	18,700
90 Days Past Due And Still Accruing	1	1
Total Non-performing Loans	19,599	18,701
Non-performing TDRs - 90 days past due | Commercial, Financial, and Agricultural
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	50	0
Loans held for investment	116	121
Non-accrual loans	166	121
90 Days Past Due And Still Accruing	0	0
Total Non-performing Loans	166	121
Non-performing TDRs - 90 days past due | Real Estate Construction - Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	0	0
Loans held for investment	83	87
Non-accrual loans	83	87
90 Days Past Due And Still Accruing	0	0
Total Non-performing Loans	83	87
Non-performing TDRs - 90 days past due | Real Estate Mortgage - Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	0	0
Loans held for investment	914	685
Non-accrual loans	914	685
90 Days Past Due And Still Accruing	0	0
Total Non-performing Loans	914	685
Non-performing TDRs - 90 days past due | Real Estate Mortgage - Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	18,226	17,664
Loans held for investment	129	137
Non-accrual loans	18,355	17,801
90 Days Past Due And Still Accruing	0	0
Total Non-performing Loans	18,355	17,801
Non-performing TDRs - 90 days past due | Installment and Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual with no Allowance	0	0
Loans held for investment	80	6
Non-accrual loans	80	6
90 Days Past Due And Still Accruing	1	1
Total Non-performing Loans	$ 81	$ 7