Derivative Financial Instruments - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) Contract	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) Contract	Jun. 30, 2023 USD ($)	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	$ 124,000	$ 13,000	$ 209,000	$ 22,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	1,315,000,000		1,315,000,000		$ 1,125,000,000
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months			15,600,000
Designated as Hedging Instrument [Member] | Interest Rate Floor [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	$ 1,315,000,000		$ 1,315,000,000		$ 1,125,000,000
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	8		8		6
Aggregate notional amount of credit risk participation agreements	$ 53,400,000		$ 53,400,000		$ 40,100,000
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	37		37		35
Aggregate notional amount of credit risk participation agreements	$ 304,900,000		$ 304,900,000		$ 304,700,000
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	301,500,000		301,500,000		285,000,000
Net (negative) positive ineffectiveness on MSR fair value	(4,500,000)	$ (1,300,000)	(5,600,000)	$ (3,100,000)
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	1,640,000,000		1,640,000,000		1,500,000,000
Termination value of derivatives	0		0		1,400,000
Collateral Posted	40,000		40,000		2,000,000
Derivatives not Designated as Hedging Instruments [Member] | Forward Contracts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations	125,000,000		125,000,000		109,500,000
Valuation adjustment			119,000		(994,000)
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	$ 89,500,000		89,500,000		61,900,000
Valuation adjustment			$ 691,000		$ 845,000