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Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings (Detail) Age in Thousands	12 Months Ended
	Jun. 30, 2021 USD ($) Modification	Jun. 30, 2020 USD ($) Modification Age
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification	0	1
Recorded Investment	$ 0	$ 61,000
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications	0	1
Recorded Investment	$ 0	$ 61,000
One- to four-family [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification	0	0
Recorded Investment	$ 0	$ 0
Real Estate Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of Modifications | Modification	0	0
Recorded Investment	$ 0	$ 0

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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