v3.26.1
Allowance for Credit Losses, Credit Quality and Other - Amortized Cost Basis of Collateral-dependent Impaired Loans (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost $ 220,300 $ 219,400
Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 101,598 99,888
Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 39,128 40,327
Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 79,601 79,207
Commercial real estate loans | Non-farm/non-residential | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 92,744 93,550
Commercial real estate loans | Non-farm/non-residential | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial real estate loans | Non-farm/non-residential | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial real estate loans | Construction/land development | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 8,456 5,849
Commercial real estate loans | Construction/land development | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial real estate loans | Construction/land development | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial real estate loans | Agricultural | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 398 489
Commercial real estate loans | Agricultural | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial real estate loans | Agricultural | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Residential real estate loans | Residential 1-4 family | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Residential real estate loans | Residential 1-4 family | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 27,953 29,402
Residential real estate loans | Residential 1-4 family | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Residential real estate loans | Multifamily residential | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Residential real estate loans | Multifamily residential | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 11,175 10,925
Residential real estate loans | Multifamily residential | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Total real estate | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 101,598 99,888
Total real estate | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 39,128 40,327
Total real estate | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Consumer | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Consumer | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Consumer | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 12,393 13,616
Commercial and industrial | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial and industrial | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Commercial and industrial | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 65,977 64,367
Agricultural & other | Commercial Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Agricultural & other | Residential Real Estate    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost 0 0
Agricultural & other | Other    
Financing Receivable Allowance For Credit Losses [Line Items]    
Amortized cost $ 1,231 $ 1,224