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Loans and Allowance for Credit Losses - Credit Risk Profile of Association's Loan Portfolio Based on Risk Rating Category and Year of Origination (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Jun. 30, 2023
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | $ 155,430 | $ 56,417
2022 | 204,216 | 212,517
2021 | 89,327 | 99,138
2020 | 82,321 | 86,618
2019 | 26,951 | 29,700
Prior Years | 102,902 | 109,934
Total loans | 661,147 | 594,324
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 155,416 | 53,624
2022 | 204,172 | 212,452
2021 | 89,023 | 98,869
2020 | 80,005 | 84,506
2019 | 26,402 | 29,096
Prior Years | 102,901 | 109,593
Total loans | 657,919 | 588,140
Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 80 |
Prior Years |  | 335
Total loans | 80 | 335
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 14 | 2,793
2022 | 44 | 65
2021 | 224 | 269
2020 | 2,316 | 2,112
2019 | 549 | 604
Prior Years | 1 | 6
Total loans | 3,148 | 5,849
One- to four-family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 44,065 | 22,046
2022 | 53,685 | 56,060
2021 | 26,294 | 27,937
2020 | 16,009 | 18,529
2019 | 5,555 | 6,218
Prior Years | 30,209 | 33,064
Total loans | 175,817 | 163,854
One- to four-family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 44,051 | 22,032
2022 | 53,679 | 56,054
2021 | 26,209 | 27,843
2020 | 16,009 | 18,468
2019 | 5,381 | 5,996
Prior Years | 30,209 | 32,729
Total loans | 175,538 | 163,122
One- to four-family [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 80 |
Prior Years |  | 335
Total loans | 80 | 335
One- to four-family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 14 | 14
2022 | 6 | 6
2021 | 5 | 94
2020 |  | 61
2019 | 174 | 222
Total loans | 199 | 397
Multi-family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 11,720 | 674
2022 | 48,742 | 37,826
2021 | 20,279 | 10,647
2020 | 23,065 | 14,399
2019 | 8,547 | 8,831
Prior Years | 16,272 | 17,272
Total loans | 128,625 | 89,649
Multi-family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 11,720 | 674
2022 | 48,742 | 37,826
2021 | 20,279 | 10,647
2020 | 23,065 | 14,399
2019 | 8,308 | 8,587
Prior Years | 16,272 | 17,272
Total loans | 128,386 | 89,405
Multi-family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2019 | 239 | 244
Total loans | 239 | 244
Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 3,041 | 982
2022 | 1,960 | 2,554
2021 | 1,455 | 1,301
2020 | 1,002 | 1,035
2019 | 749 | 789
Prior Years | 1,287 | 1,405
Total loans | 9,494 | 8,066
Home equity lines of credit [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 3,041 | 982
2022 | 1,960 | 2,554
2021 | 1,455 | 1,301
2020 | 1,002 | 1,035
2019 | 749 | 789
Prior Years | 1,287 | 1,405
Total loans | 9,494 | 8,066
Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 32,990 | 2,882
2022 | 6,916 | 29,188
2021 |  | 10,432
2020 |  | 8,471
Total loans | 39,906 | 50,973
Construction [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 32,990 | 2,882
2022 | 6,916 | 29,188
2021 |  | 10,432
2020 |  | 8,471
Total loans | 39,906 | 50,973
Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 30,022 | 12,214
2022 | 72,434 | 63,645
2021 | 28,336 | 29,320
2020 | 32,125 | 33,364
2019 | 5,578 | 5,925
Prior Years | 47,070 | 49,239
Total loans | 215,565 | 193,707
Commercial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 30,022 | 12,214
2022 | 72,434 | 63,645
2021 | 28,336 | 29,320
2020 | 31,285 | 32,502
2019 | 5,498 | 5,844
Prior Years | 47,070 | 49,239
Total loans | 214,645 | 192,764
Commercial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2020 | 840 | 862
2019 | 80 | 81
Total loans | 920 | 943
Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 29,889 | 15,228
2022 | 18,046 | 20,063
2021 | 11,797 | 17,847
2020 | 9,546 | 9,986
2019 | 6,412 | 7,726
Prior Years | 8,008 | 8,843
Total loans | 83,698 | 79,693
Commercial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 29,889 | 12,449
2022 | 18,008 | 20,004
2021 | 11,578 | 17,673
2020 | 8,070 | 8,797
2019 | 6,356 | 7,669
Prior Years | 8,007 | 8,841
Total loans | 81,908 | 75,433
Commercial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 |  | 2,779
2022 | 38 | 59
2021 | 219 | 174
2020 | 1,476 | 1,189
2019 | 56 | 57
Prior Years | 1 | 2
Total loans | 1,790 | 4,260
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 3,703 | 2,391
2022 | 2,433 | 3,181
2021 | 1,166 | 1,654
2020 | 574 | 834
2019 | 110 | 211
Prior Years | 56 | 111
Total loans | 8,042 | 8,382
Consumer [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 3,703 | 2,391
2022 | 2,433 | 3,181
2021 | 1,166 | 1,653
2020 | 574 | 834
2019 | 110 | 211
Prior Years | 56 | 107
Total loans | $ 8,042 | 8,377
Consumer [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 |  | 1
Prior Years |  | 4
Total loans |  | $ 5

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