v3.26.3
Derivative Financial Instruments - Summary of Location and Fair Value of Derivative Instruments (Details)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
Instrument
Dec. 31, 2025
USD ($)
Instrument
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Fair Value $ 78,574 $ 36,515
Derivative Liability, Fair Value $ 63,513 $ 36,926
Interest Rate Swap Agreements on Loans with Commercial Loan Customers | Not Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments | Instrument 7 62
Derivative Asset, Notional Amount $ 87,873 $ 662,325
Derivative Asset, Weighted Average Maturity 2 years 10 months 28 days 3 years 7 months 20 days
Derivative Asset, Fair Value $ 85 $ 9,704
Derivative Liability, Number of Instruments Held | Instrument 123 62
Derivative Liability, Notional Amount $ 1,182,974 $ 504,535
Derivative Liability, Weighted Average Maturity 3 years 9 months 18 days 5 years 3 months 21 days
Derivative Liability, Fair Value $ 63,513 $ 34,558
Interest Rate Swap Agreements on Loans with Third-party Counter Parties | Not Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments | Instrument 130 124
Derivative Asset, Notional Amount $ 1,270,848 $ 1,166,859
Derivative Asset, Weighted Average Maturity 3 years 8 months 23 days 4 years 4 months 9 days
Derivative Asset, Fair Value $ 63,428 $ 24,854
Interest Rate Swap Related to AFS Securities | Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments | Instrument 11 11
Derivative Asset, Notional Amount $ 12,500 $ 12,500
Derivative Asset, Weighted Average Maturity 5 years 6 months 10 days 6 years 3 months 10 days
Derivative Asset, Fair Value $ 1,516 $ 839
Interest Rate Swap Related to Wholesale Funding | Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments | Instrument 45 4
Derivative Asset, Notional Amount $ 472,489 $ 48,400
Derivative Asset, Weighted Average Maturity 2 years 8 months 19 days 2 years 1 month 13 days
Derivative Asset, Fair Value $ 13,545 $ 1,118
Derivative Liability, Number of Instruments Held | Instrument 0 45
Derivative Liability, Notional Amount $ 0 $ 449,089
Derivative Liability, Weighted Average Maturity 0 years 3 years 3 months 14 days
Derivative Liability, Fair Value $ 0 $ 2,368