v3.26.1
Trust Preferred Securities - Summary of Debentures Payable to Statutory Trusts (Details) - Subordinated Debt - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Debentures payable $ 56,703 $ 56,703
First Bancshares of Baton Rouge Statutory Trust I    
Debt Instrument [Line Items]    
Debentures payable 4,124 4,124
State Capital Statutory Trust IV    
Debt Instrument [Line Items]    
Debentures payable 5,155 5,155
BancPlus Statutory Trust II    
Debt Instrument [Line Items]    
Debentures payable 20,619 20,619
BancPlus Statutory Trust III    
Debt Instrument [Line Items]    
Debentures payable 20,619 20,619
State Capital Master Trust    
Debt Instrument [Line Items]    
Debentures payable $ 6,186 $ 6,186