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Loans and Allowance for Credit Losses - Non Accruals (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Jun. 30, 2022
Mortgages on real estate:
Total, Nonaccrual, No Allowance	$ 0
Total	335	$ 1,127
One- to four-family [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	24	1,127
Multi-family [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	0	0
Real Estate Loans Home Equity Lines Of Credit [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	0	0
Construction Loans [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	0	0
Consumer Loans [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	0	0
Commercial [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	46	0
Commercial Business Loans [Member]
Mortgages on real estate:
Total, Nonaccrual, No Allowance	0
Total	$ 265	$ 0

X

- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
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- References

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