v3.26.1
Allowance for Credit Losses - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]          
Accrued interest related to financial assets held at amortized cost $ 336,700 $ 341,300 $ 336,700 $ 341,300 $ 312,200
Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable and other Accrued interest receivable and other Accrued interest receivable and other Accrued interest receivable and other Accrued interest receivable and other
Nonaccrual loans with no related allowance for credit losses $ 72,400   $ 72,400    
Provision for credit losses 23,171 $ 22,282 52,768 $ 46,256  
Loan net charge-offs 13,400   31,900    
Provision for credit losses (37)   (40)    
Foreclosed residential real estate properties 0   0    
Commitments to lend 52,500 21,000 52,500 21,000  
Commercial          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Provision for credit losses 32,977 (2,213) 72,400 31,926  
Premium finance receivables—property & casualty          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Provision for credit losses 3,978 3,404 8,402 5,258  
Residential real estate          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Provision for credit losses 338 801 1,249 982  
Financing Receivable | Residential Real Estate          
Financing Receivable, Allowance for Credit Loss [Line Items]          
Recorded investment, foreclosure proceedings in process $ 59,300 $ 58,200 $ 59,300 $ 58,200