v3.26.1
Schedule of Reportable Transactions (Details) - EBP 001
12 Months Ended
Dec. 31, 2025
USD ($)
EBP, Schedule of Reportable Transaction [Line Items]  
Plan name Employee Stock Ownership Plan
EIN 64-0655312
Plan number 001
Investment, Identifier [Axis]: American Funds American Fund TD 2025  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2030  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2035  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2040  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2045  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2050  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2055  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2060  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: American Funds American Fund TD 2065  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] American Funds [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BancPlus Corporation common stock  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BancPlus Corporation common stock [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Employer, Common Stock [Member]
Investment, Identifier [Axis]: BankPlus Wealth Management BankPlus Wealth Mgmt Aggressive  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BankPlus Wealth Management [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BankPlus Wealth Management BankPlus Wealth Mgmt Cons Growth  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BankPlus Wealth Management [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BankPlus Wealth Management BankPlus Wealth Mgmt Conservative  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BankPlus Wealth Management [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BankPlus Wealth Management BankPlus Wealth Mgmt Growth  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BankPlus Wealth Management [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BankPlus Wealth Management BankPlus Wealth Mgmt Mod Growth  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BankPlus Wealth Management [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: BlackRock iShares MSCI EAFE Index Fund  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] BlackRock [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Fidelity Fidelity 500 Index Fund  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Fidelity [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Goldman Sachs Financial Square Government Fund  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Goldman Sachs [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Money Market Mutual Fund [Member]
Investment, Identifier [Axis]: Goldman Sachs Financial Square Government Fund Purchases  
EBP, Schedule of Reportable Transaction [Line Items]  
Purchase Price $ 8,164,258
Selling Price 0
Lease Rental 0
Expenses Incurred with Transaction 0
Purchases, Cost of Asset 8,164,258
Purchases, Current Value of Asset on Transaction Date 8,164,258
Net Gain or (Loss) 0
Investment, Identifier [Axis]: Goldman Sachs Financial Square Government Fund Sales  
EBP, Schedule of Reportable Transaction [Line Items]  
Purchase Price 0
Selling Price 13,847,163
Lease Rental 0
Expenses Incurred with Transaction 0
Sales, Cost of Asset 13,847,163
Sales, Current Value of Asset on Transaction Date 13,847,163
Net Gain or (Loss) $ 0
Investment, Identifier [Axis]: Goldman Sachs Goldman Sachs GQG Partners Int'l  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Goldman Sachs [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Invesco Invesco QQQ Trust  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Invesco [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: JP Morgan JP Morgan Core Plus  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] JP Morgan [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Loomis Sayles Loomis Sayles Investment Grade Bond Fund  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Loomis Sayles [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Neuberger Berman Neuberger Berman Large Cap Value  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Neuberger Berman [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: PIMCO PIMCO Income Fund  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] PIMCO [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Reliance Trust Reliance MetLife Stable Value  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Reliance Trust [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Common Collective Trust [Member]
Investment, Identifier [Axis]: Vanguard Vanguard Emerging Markets ETF  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Vanguard Vanguard Inflation Protected Securities  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Vanguard Vanguard Mid Cap ETF  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Vanguard Vanguard Small Cap ETF  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: Vanguard Vanguard Total Bond Market ETF  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] Vanguard [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]
Investment, Identifier [Axis]: William Blair William Blair Small-Mid Cap  
EBP, Schedule of Reportable Transaction [Line Items]  
EBP, Investment, Issuer Name [Extensible Enumeration] William Blair [Member]
EBP, Investment, Current Value, Type [Extensible Enumeration] Mutual Fund [Member]