Loans and Allowance for Credit Losses - Summary of Loans by Major Class (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Loans and Allowance for Loan Losses
Loans held for investment	$ 1,556,969	$ 1,521,252
Commercial, financial, & agricultural
Loans and Allowance for Loan Losses
Loans held for investment	227,372	244,549
Real estate construction − residential
Loans and Allowance for Loan Losses
Loans held for investment	58,774	32,095
Real estate construction − commercial
Loans and Allowance for Loan Losses
Loans held for investment	130,572	137,235
Real estate mortgage − residential
Loans and Allowance for Loan Losses
Loans held for investment	379,514	361,025
Real estate mortgage − commercial
Loans and Allowance for Loan Losses
Loans held for investment	739,413	722,729
Installment and other consumer
Loans and Allowance for Loan Losses
Loans held for investment	$ 21,324	$ 23,619