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Loans and Allowance for Credit Losses - Categories of Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Jun. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2021
--- | --- | --- | --- | ---
Real estate loans |  |  |  |
Total loans | $ 550,905 | $ 525,736 | $ 512,984 |
Unearned fees and discounts, net | (225) | (247) |  |
Allowance for credit losses | 7,023 | 7,052 | 6,470 | $ 6,599
Loans, net | 544,107 | 518,931 |  |
One- to four-family [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 142,417 | 132,474 | 117,854 |
Allowance for credit losses | 1,537 | 1,028 | 974 | 967
Multi-family [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 98,778 | 88,247 | 97,211 |
Allowance for credit losses | 1,284 | 1,375 | 1,562 | 1,674
Home equity lines of credit [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 6,778 | 6,987 | 6,274 |
Allowance for credit losses | 94 | 70 | 63 | 67
Construction [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 34,314 | 41,254 | 31,209 |
Allowance for credit losses | 549 | 489 | 321 | 258
Commercial [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 181,934 | 167,375 | 163,859 |
Allowance for credit losses | 2,386 | 1,985 | 1,916 | 1,831
Commercial [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 77,103 | 80,418 | 88,962 |
Allowance for credit losses | 1,090 | 2,025 | 1,571 | 1,740
Consumer [Member] |  |  |  |
Real estate loans |  |  |  |
Total loans | 9,581 | 8,981 | 7,615 |
Allowance for credit losses | $ 83 | $ 80 | $ 63 | $ 62

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