v3.26.1
Derivative Financial Instruments - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Contract
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Contract
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Contract
Designated as Hedging Instrument [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Total excluded components of earnings recognition $ 118 $ 131 $ 241 $ 261  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Total notional amount 1,645,000   1,645,000   $ 1,630,000
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months     4,400    
Designated as Hedging Instrument [Member] | Interest Rate Floor [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Total notional amount $ 1,645,000   $ 1,645,000   $ 1,630,000
Derivatives not Designated as Hedging Instruments [Member] | Beneficiary [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Number of risk participation agreements | Contract 10   10   10
Aggregate notional amount of credit risk participation agreements $ 120,100   $ 120,100   $ 113,700
Derivatives not Designated as Hedging Instruments [Member] | Guarantor [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Number of risk participation agreements | Contract 26   26   27
Aggregate notional amount of credit risk participation agreements $ 329,800   $ 329,800   $ 267,900
Derivatives not Designated as Hedging Instruments [Member] | Mortgage Servicing Rights Hedge [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Total notional amount 354,500   354,500   345,500
Net (negative) positive ineffectiveness on MSR fair value 199 $ (541) 103 $ (1,100)  
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Swap [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Total notional amount 2,158,000   2,158,000   1,991,000
Termination value of derivatives 2,800   2,800   117
Collateral Posted 4,500   4,500   2,200
Derivatives not Designated as Hedging Instruments [Member] | Forward Contracts [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Off-balance sheet obligations 187,500   187,500   152,000
Valuation adjustment     (42)   (287)
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Lock Commitments [Member]          
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]          
Off-balance sheet obligations $ 87,200   87,200   74,500
Valuation adjustment     $ 1,100   $ 998