Derivative Financial Instruments - Additional Information (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) Contract	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) Contract	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) Contract
Designated as Hedging Instrument [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total excluded components of earnings recognition	$ 132	$ 13	$ 341	$ 35
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	1,390,000		1,390,000		$ 1,125,000
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months			5,800
Designated as Hedging Instrument [Member] | Interest Rate Floor [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	$ 1,390,000		$ 1,390,000		$ 1,125,000
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	9		9		6
Aggregate notional amount of credit risk participation agreements	$ 60,300		$ 60,300		$ 40,100
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	36		36		35
Aggregate notional amount of credit risk participation agreements	$ 286,200		$ 286,200		$ 304,700
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	296,500		296,500		285,000
Net (negative) positive ineffectiveness on MSR fair value	(2,500)	$ (1,000)	(8,100)	$ (4,100)
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	1,721,000		1,721,000		1,500,000
Termination value of derivatives	2,000		2,000		1,400
Collateral Posted	2,900		2,900		2,000
Derivatives not Designated as Hedging Instruments [Member] | Forward Contracts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations	116,500		116,500		109,500
Valuation adjustment			144		(994)
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	$ 81,000		81,000		61,900
Valuation adjustment			$ 704		$ 845