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Loans and Allowance for Loan Losses - Loans Modified as Troubled Debt Restructurings (Detail) Age in Thousands | 12 Months Ended
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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

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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 + Details
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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 + Details
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