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Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Dec. 31, 2022 USD ($) Instrument	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($) Instrument	Dec. 31, 2021 USD ($)	Jun. 30, 2022 USD ($)
Derivative [Line Items]
Reclassifications to interest expense	$ 4,104,000	$ (1,506,000)	$ 5,724,000	$ (3,003,000)
Derivative liability	2,900,000		2,900,000
Interest rate contracts	2,500,000		2,500,000
Interest Rate Contract
Derivative [Line Items]
Interest rate contracts	2,500,000		2,500,000
Interest Expense
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months			28,200,000
Interest Income
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months			81,000
Loan Origination Commitments
Derivative [Line Items]
Pipeline of loans held-for-sale	10,200,000		10,200,000		$ 20,300,000
Cash Flow Hedges
Derivative [Line Items]
Reclassifications to interest expense	$ (4,100,000)		$ (5,700,000)
Cash Flow Hedges | Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held | Instrument	12		12
Derivative, notional amount	$ 1,330,000,000		$ 1,330,000,000
Cash Flow Hedges | Interest Rate Floor
Derivative [Line Items]
Number of interest rate derivative instruments held | Instrument	1		1
Derivative, notional amount	$ 100,000,000		$ 100,000,000
Fair Value Hedging | Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held | Instrument	3		3
Derivative, notional amount	$ 500,000,000		$ 500,000,000

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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