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Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($) Instrument	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) Instrument	Mar. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Derivative [Line Items]
Reclassifications to interest expense	$ (1,268,000)	$ (1,987,000)	$ (4,271,000)	$ (6,576,000)
Derivative liability	0		0
Loan Origination Commitments [Member]
Derivative [Line Items]
Pipeline of loans held-for-sale	16,000,000.0		16,000,000.0		$ 48,400,000
Interest Expense [Member]
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months			4,600,000
Cash Flow Hedges [Member]
Derivative [Line Items]
Reclassifications to interest expense	$ 1,300,000		$ (4,300,000)
Cash Flow Hedges [Member] \| Interest Rate Swaps [Member]
Derivative [Line Items]
Number of interest rate derivative instruments held \| Instrument	10		10
Derivative, notional amount	$ 790,000,000.0		$ 790,000,000.0