Loans and Allowance for Loan Losses - Past Due and Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Aging information for the Company's past due and non-accrual loans
Loans held for investment	$ 1,542,074	$ 1,521,252
90 Days Past Due And Still Accruing	1	1
Non-Accrual	19,598	18,700
Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	1,520,562	1,501,738
30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	1,913	813
Commercial, Financial, and Agricultural
Aging information for the Company's past due and non-accrual loans
Loans held for investment	227,992	244,549
90 Days Past Due And Still Accruing	0	0
Non-Accrual	166	121
Commercial, Financial, and Agricultural | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	227,824	244,392
Commercial, Financial, and Agricultural | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	2	36
Real Estate Construction - Residential
Aging information for the Company's past due and non-accrual loans
Loans held for investment	44,467	32,095
90 Days Past Due And Still Accruing	0	0
Non-Accrual	0	0
Real Estate Construction - Residential | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	44,467	32,095
Real Estate Construction - Residential | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	0	0
Real Estate Construction - Commercial
Aging information for the Company's past due and non-accrual loans
Loans held for investment	157,860	137,235
90 Days Past Due And Still Accruing	0	0
Non-Accrual	83	87
Real Estate Construction - Commercial | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	157,777	137,148
Real Estate Construction - Commercial | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	0	0
Real Estate Mortgage - Residential
Aging information for the Company's past due and non-accrual loans
Loans held for investment	363,634	361,025
90 Days Past Due And Still Accruing	0	0
Non-Accrual	914	685
Real Estate Mortgage - Residential | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	361,087	359,672
Real Estate Mortgage - Residential | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	1,633	668
Real Estate Mortgage - Commercial
Aging information for the Company's past due and non-accrual loans
Loans held for investment	725,573	722,729
90 Days Past Due And Still Accruing	0	0
Non-Accrual	18,355	17,801
Real Estate Mortgage - Commercial | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	707,032	704,925
Real Estate Mortgage - Commercial | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	186	3
Installment and Other Consumer
Aging information for the Company's past due and non-accrual loans
Loans held for investment	22,548	23,619
90 Days Past Due And Still Accruing	1	1
Non-Accrual	80	6
Installment and Other Consumer | Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	22,375	23,506
Installment and Other Consumer | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	$ 92	$ 106