Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months.

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Amount of net positive or negative ineffectiveness from comparing the total hedge cost to the changes in fair value of Mortgage Servicing Rights derivative assets attributable to interest rate changes.

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The number of risk participation agreements the entity has entered into.

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Termination value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to a provision from agreements with each of its derivative counterparties stating that the entity will be considered on default on its derivative obligations if the entity defaulted on payment of indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender.

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Amount of positive (negative) valuation adjustment on the fair value of derivative instruments, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 50
-Paragraph 4H
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Nominal or face amount used to calculate payments on the derivative asset.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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Amount of gain (loss) from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Nominal or face amount used to calculate payment on derivative.

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-Name Accounting Standards Codification
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The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Derivative Financial Instruments - Additional Information (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) Contract	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) Contract
Designated as Hedging Instrument [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total excluded components of earnings recognition	$ 9,000
Designated as Hedging Instrument [Member] \| Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	875,000,000.0		$ 825,000,000.0
Interest and fees on LHFS and LHFI reclassified as a reduction over twelve months	12,400,000
Designated as Hedging Instrument [Member] \| Interest Rate Floor [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	$ 875,000,000.0		$ 825,000,000.0
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	5		5
Aggregate notional amount of credit risk participation agreements	$ 49,900,000		$ 50,200,000
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	28		29
Aggregate notional amount of credit risk participation agreements	$ 242,100,000		$ 235,800,000
Derivatives not Designated as Hedging Instruments [Member] \| Interest Rate Swap [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Total notional amount	1,414,000,000		1,391,000,000
Termination value of derivatives	832,000		0
Collateral Posted	1,200,000		740,000
Derivatives not Designated as Hedging Instruments [Member] \| Forward Contracts [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet obligations	162,500,000		97,000,000.0
Valuation adjustment	(735,000)		168,000
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	126,900,000		68,400,000
Valuation adjustment	1,300,000		157,000
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	253,500,000		$ 277,000,000.0
Net (negative) positive ineffectiveness on MSR fair value	$ (1,800,000)	$ 1,000,000.0