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Loans and Allowance for Credit Losses - Categories of Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Jun. 30, 2023 | Sep. 30, 2022 | Jun. 30, 2022
--- | --- | --- | --- | ---
Real estate loans |  |  |  |
Total loans | $ 621,771 | $ 594,324 | $ 550,905 |
Unearned fees and discounts, net | (277) | (272) |  |
Allowance for credit losses | 7,450 | 7,139 | 7,023 | $ 7,052
Loans, net | 614,598 | 587,457 |  |
One- to four-family [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 170,154 | 163,854 | 142,417 |
Allowance for credit losses | 1,906 | 1,898 | 1,537 | 1,028
Multi-family [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 89,177 | 89,649 | 98,778 |
Allowance for credit losses | 1,115 | 1,121 | 1,284 | 1,375
Home equity lines of credit [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 8,511 | 8,066 | 6,778 |
Allowance for credit losses | 134 | 121 | 94 | 70
Construction [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 72,810 | 50,973 | 34,314 |
Allowance for credit losses | 1,165 | 765 | 549 | 489
Commercial [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 193,582 | 193,707 | 181,934 |
Allowance for credit losses | 2,265 | 2,369 | 2,386 | 1,985
Commercial [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 79,194 | 79,693 | 77,103 |
Allowance for credit losses | 788 | 794 | 1,090 | 2,025
Consumer [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 8,343 | 8,382 | 9,581 |
Allowance for credit losses | $ 77 | $ 71 | $ 83 | $ 80

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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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- Definition Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481569/310-20-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481161/840-30-50-4 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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