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Loans Receivable - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022 USD ($) Property Loan	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2022 USD ($) Loan Property	Dec. 31, 2021 USD ($) Loan	Jun. 30, 2022 USD ($) Property Loan
Financing Receivable Recorded Investment [Line Items]
Troubled debt restructuring	$ 18,373		$ 18,373		$ 22,184
Troubled debt restructuring, allowance for credit loss	331		331		$ 365
Financing receivable, troubled debt restructuring, commitment to lend	69		69
TDR charge-offs	$ 5	$ 0	$ 15	$ 0
Number of TDR defaults | Loan	2	2	4	3
Number of TDR loans in process of defaulting | Loan	2		2
TDR defaults	$ 170	$ 0	$ 170	$ 0
Financing receivable, individually evaluated for impairment	$ 40,500		$ 40,500
Number of loans in process of foreclosure | Loan					7
Mortgage loans in process of foreclosure, carrying value					$ 1,500
Single-family Property [Member]
Financing Receivable Recorded Investment [Line Items]
Real estate acquired through foreclosure, number of properties | Property	2		2		1
Real estate acquired through foreclosure	$ 454		$ 454		$ 178
Nonresidential Property
Financing Receivable Recorded Investment [Line Items]
Real estate acquired through foreclosure, number of properties | Property	1		1
Real estate acquired through foreclosure	$ 13,000		$ 13,000
Residential mortgage
Financing Receivable Recorded Investment [Line Items]
Number of loans in process of foreclosure | Loan	5		5
Mortgage loans in process of foreclosure, carrying value	$ 951		$ 951
Commercial Mortgage
Financing Receivable Recorded Investment [Line Items]
Number of loans in process of foreclosure | Loan	6		6
Mortgage loans in process of foreclosure, carrying value	$ 9,300		$ 9,300
Collateral Pledged
Financing Receivable Recorded Investment [Line Items]
Financing receivable, individually evaluated for impairment	$ 36,882		$ 36,882		$ 63,287

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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