Loans and Allowance for Credit Losses - Schedule of Past Due and Non-accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Aging information for the Company's past due and non-accrual loans
Loans held for investment	$ 1,454,171	$ 1,486,792
90 Days Past Due And Still Accruing	8	29
Non-Accrual	6,783	6,836
Current or Less Than 30 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	1,445,201	1,477,402
30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	2,179	2,525
Commercial, Financial, & Agricultural
Aging information for the Company's past due and non-accrual loans
Loans held for investment	223,378	227,584
90 Days Past Due And Still Accruing	2	0
Non-Accrual	834	1,003
Commercial, Financial, & 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	222,542	226,129
Commercial, Financial, & Agricultural | 30 - 89 Days Past Due
Aging information for the Company's past due and non-accrual loans
Loans held for investment	0	452
Real estate construction − residential
Aging information for the Company's past due and non-accrual loans
Loans held for investment	42,487	39,609
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	42,487	39,521
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	88
Real estate construction − commercial
Aging information for the Company's past due and non-accrual loans
Loans held for investment	83,666	83,846
90 Days Past Due And Still Accruing	0	0
Non-Accrual	0	0
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	83,666	83,846
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	367,081	369,636
90 Days Past Due And Still Accruing	0	29
Non-Accrual	5,714	5,656
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	359,947	362,289
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	1,420	1,662
Real estate mortgage − commercial
Aging information for the Company's past due and non-accrual loans
Loans held for investment	728,184	755,892
90 Days Past Due And Still Accruing	0	0
Non-Accrual	191	143
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	727,337	755,512
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	656	237
Installment and Other Consumer
Aging information for the Company's past due and non-accrual loans
Loans held for investment	9,375	10,225
90 Days Past Due And Still Accruing	6	0
Non-Accrual	44	34
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	9,222	10,105
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	$ 103	$ 86