Derivative Instruments and Hedging Activities - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2022 USD ($) Instrument	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Derivative [Line Items]
Reclassifications to interest expense	$ 4,273,000	$ 8,281,000	$ (1,870,000)
Pipeline of loans held-for-sale	20,300,000
Loan Origination Commitments [Member]
Derivative [Line Items]
Pipeline of loans held-for-sale	20,300,000	48,400,000
Counter Party [Member]
Derivative [Line Items]
Derivative liability	0
Financial collateral not included as offsetting amounts	0	$ 673,000
Interest Expense [Member]
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months	11,600,000
Cash Flow Hedges [Member]
Derivative [Line Items]
Reclassifications to interest expense	$ 4,300,000
Cash Flow Hedges [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Number of interest rate derivative instruments held | Instrument	9
Derivative, notional amount	$ 750,000,000.0