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Loans and Allowance for Credit Losses - Loans Modified as Troubled Debt Restructurings (Detail) - USD ($) $ in Thousands | Jun. 30, 2023 | Jun. 30, 2022
--- | --- | ---
Real estate loans |  |
Total | $ 215 | $ 998
One- to four-family [Member] |  |
Real estate loans |  |
Total | 189 | 962
Multi-family [Member] |  |
Real estate loans |  |
Total | 0 | 0
Home equity lines of credit [Member] |  |
Real estate loans |  |
Total | 0 | 0
Real Estate Loan [Member] |  |
Real estate loans |  |
Total | 189 | 962
Construction Loans [Member] |  |
Real estate loans |  |
Total | 0 | 0
Commercial [Member] |  |
Real estate loans |  |
Total | 0 | 0
Commercial Business Loans [Member] |  |
Real estate loans |  |
Total | 26 | 36
Consumer Loans [Member] |  |
Real estate loans |  |
Total | $ 0 | $ 0

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- Definition Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-42 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 33 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-33 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 310 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481746/310-40-50-4 + Details
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