Loans and Allowance for Credit Losses - Schedule of Past Due and Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Aging information for the Company's past due and non-accrual loans
Loans held for investment	$ 1,470,323	$ 1,466,160
90 Days Past Due And Still Accruing	17	210
Non-Accrual	2,444	2,537
Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	1,455,065	1,459,390
30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	12,797	4,023
Commercial, Financial, and Agricultural
Aging information for the Company's past due and non-accrual loans
Loans held for investment	202,405	202,329
90 Days Past Due And Still Accruing	0	0
Non-Accrual	923	923
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	201,115	201,201
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	367	205
Real estate construction − residential
Aging information for the Company's past due and non-accrual loans
Loans held for investment	30,670	32,046
90 Days Past Due And Still Accruing	0	0
Non-Accrual	454	454
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	30,216	31,592
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	75,053	80,435
90 Days Past Due And Still Accruing	0	0
Non-Accrual	44	49
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	74,737	80,386
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	272	0
Real estate mortgage − residential
Aging information for the Company's past due and non-accrual loans
Loans held for investment	376,026	361,735
90 Days Past Due And Still Accruing	0	207
Non-Accrual	859	963
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	373,371	358,393
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	1,796	2,172
Real estate mortgage − commercial
Aging information for the Company's past due and non-accrual loans
Loans held for investment	773,622	775,594
90 Days Past Due And Still Accruing	0	0
Non-Accrual	136	138
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	763,223	773,918
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	10,263	1,538
Installment and other consumer
Aging information for the Company's past due and non-accrual loans
Loans held for investment	12,547	14,021
90 Days Past Due And Still Accruing	17	3
Non-Accrual	28	10
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	12,403	13,900
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	$ 99	$ 108