v3.26.1
Allowance for Credit Losses, Credit Quality and Other - Presentation of Troubled Debt Restructurings ("TDRs") by Class (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 115,986 $ 115,605
Percentage of Total Class of Loans Receivable 0.74% 0.74%
Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 1,456 $ 1,469
Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 96,021 95,410
Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 97 99
Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 965 1,057
Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 2,804 2,704
Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 14,530 14,752
Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 113 114
Commercial real estate loans | Non-farm/non-residential    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 48,040 $ 48,330
Percentage of Total Class of Loans Receivable 0.89% 0.91%
Commercial real estate loans | Non-farm/non-residential | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 376 $ 378
Commercial real estate loans | Non-farm/non-residential | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 31,869 31,869
Commercial real estate loans | Non-farm/non-residential | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Non-farm/non-residential | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 937 1,001
Commercial real estate loans | Non-farm/non-residential | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 328 330
Commercial real estate loans | Non-farm/non-residential | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Commercial real estate loans | Non-farm/non-residential | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 14,530 14,752
Commercial real estate loans | Non-farm/non-residential | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Construction/land development    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 9 $ 36
Percentage of Total Class of Loans Receivable 0.00% 0.00%
Commercial real estate loans | Construction/land development | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 0 $ 0
Commercial real estate loans | Construction/land development | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Construction/land development | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Construction/land development | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 9 36
Commercial real estate loans | Construction/land development | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Construction/land development | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Commercial real estate loans | Construction/land development | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial real estate loans | Construction/land development | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Residential real estate loans | Residential 1-4 family    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 4,269 $ 4,584
Percentage of Total Class of Loans Receivable 0.20% 0.21%
Residential real estate loans | Residential 1-4 family | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 1,023 $ 1,033
Residential real estate loans | Residential 1-4 family | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 784 1,018
Residential real estate loans | Residential 1-4 family | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 97 99
Residential real estate loans | Residential 1-4 family | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 19 20
Residential real estate loans | Residential 1-4 family | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 2,233 2,300
Residential real estate loans | Residential 1-4 family | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Residential real estate loans | Residential 1-4 family | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Residential real estate loans | Residential 1-4 family | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 113 114
Total real estate    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 52,318 $ 52,950
Percentage of Total Class of Loans Receivable 0.45% 0.46%
Total real estate | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 1,399 $ 1,411
Total real estate | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 32,653 32,887
Total real estate | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 97 99
Total real estate | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 965 1,057
Total real estate | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 2,561 2,630
Total real estate | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Total real estate | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 14,530 14,752
Total real estate | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 113 114
Consumer    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 3,161 $ 2,938
Percentage of Total Class of Loans Receivable 0.25% 0.23%
Consumer | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 0 $ 0
Consumer | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 3,161 2,938
Consumer | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Consumer | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Consumer | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Consumer | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Consumer | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Consumer | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial and industrial    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 60,507 $ 59,717
Percentage of Total Class of Loans Receivable 2.79% 2.69%
Commercial and industrial | Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 57 $ 58
Commercial and industrial | Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 60,207 59,585
Commercial and industrial | Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial and industrial | Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial and industrial | Interest Rate Reduction and Term Extension    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 243 74
Commercial and industrial | Principal Reduction and Interest Rate Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance   0
Commercial and industrial | Term Extension and Interest Only    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance 0 0
Commercial and industrial | Term Extension and Principal Reduction    
Financing Receivable, Modifications [Line Items]    
Post- Modification Outstanding Balance $ 0 $ 0