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Loans and Allowance for Credit Losses - Credit Risk Profile of Association's Loan Portfolio Based on Risk Rating Category and Calendar Year of Origination (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | $ 65,466 | $ 43,030
2023 | 145,529 | 142,910
2022 | 170,089 | 177,235
2021 | 83,475 | 85,294
2020 | 77,669 | 79,971
Prior Years | 111,961 | 117,949
Total loans | 654,189 | 646,389
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 65,466 | 43,030
2023 | 145,374 | 142,763
2022 | 170,044 | 177,183
2021 | 83,072 | 84,877
2020 | 75,823 | 78,062
Prior Years | 111,215 | 117,237
Total loans | 650,994 | 643,152
Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 66 | 72
Total loans | 66 | 72
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 155 | 147
2022 | 45 | 52
2021 | 337 | 345
2020 | 1,846 | 1,909
Prior Years | 746 | 712
Total loans | 3,129 | 3,165
One- to Four-Family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 17,952 | 14,790
2023 | 38,730 | 39,216
2022 | 49,619 | 51,267
2021 | 23,784 | 24,439
2020 | 15,223 | 15,455
Prior Years | 31,026 | 32,096
Total loans | 176,334 | 177,263
Current period recoveries Prior Years | 1 | 3
Current period recoveries Total | 1 | 3
One- to Four-Family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 17,952 | 14,790
2023 | 38,730 | 39,202
2022 | 49,615 | 51,262
2021 | 23,713 | 24,362
2020 | 15,223 | 15,455
Prior Years | 30,819 | 31,926
Total loans | 176,052 | 176,997
One- to Four-Family [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 66 | 72
Total loans | 66 | 72
One- to Four-Family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 |  | 14
2022 | 4 | 5
2021 | 5 | 5
Prior Years | 207 | 170
Total loans | 216 | 194
Multi-Family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,634 | 573
2023 | 8,623 | 9,004
2022 | 51,025 | 51,279
2021 | 20,238 | 20,346
2020 | 22,583 | 22,728
Prior Years | 21,803 | 22,101
Total loans | 125,906 | 126,031
Current period charge-offs 2023 | (350) |
Current period charge-offs Total | (350) |
Multi-Family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,634 | 573
2023 | 8,623 | 9,004
2022 | 51,025 | 51,279
2021 | 20,238 | 20,346
2020 | 22,583 | 22,728
Prior Years | 21,572 | 21,867
Total loans | 125,675 | 125,797
Multi-Family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Prior Years | 231 | 234
Total loans | 231 | 234
Home Equity Lines of Credit [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 2,575 | 1,629
2023 | 2,263 | 2,361
2022 | 1,497 | 1,874
2021 | 1,531 | 1,806
2020 | 717 | 795
Prior Years | 1,344 | 1,394
Total loans | 9,927 | 9,859
Home Equity Lines of Credit [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 2,575 | 1,629
2023 | 2,263 | 2,361
2022 | 1,497 | 1,874
2021 | 1,531 | 1,806
2020 | 717 | 795
Prior Years | 1,344 | 1,394
Total loans | 9,927 | 9,859
Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 8,993 | 9,123
2023 | 18,377 | 21,043
2022 | 3,250 | 3,250
Prior Years | 219 | 292
Total loans | 30,839 | 33,708
Construction [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 8,993 | 9,123
2023 | 18,377 | 21,043
2022 | 3,250 | 3,250
Prior Years | 219 | 292
Total loans | 30,839 | 33,708
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 13,090 | 4,602
2023 | 32,704 | 29,665
2022 | 53,483 | 57,530
2021 | 27,484 | 27,772
2020 | 30,756 | 31,310
Prior Years | 47,586 | 49,138
Total loans | 205,103 | 200,017
Commercial Real Estate [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 13,090 | 4,602
2023 | 32,704 | 29,665
2022 | 53,483 | 57,530
2021 | 27,342 | 27,622
2020 | 29,944 | 30,489
Prior Years | 47,334 | 48,886
Total loans | 203,897 | 198,794
Commercial Real Estate [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 142 | 150
2020 | 812 | 821
Prior Years | 252 | 252
Total loans | 1,206 | 1,223
Commercial Business [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 18,935 | 10,357
2023 | 42,519 | 38,986
2022 | 9,646 | 10,205
2021 | 9,776 | 10,088
2020 | 8,089 | 9,289
Prior Years | 9,929 | 12,859
Total loans | 98,894 | 91,784
Current period charge-offs 2023 | (50) |
Current period charge-offs Total | (50) |
Current period recoveries 2020 | 2 | 242
Current period recoveries Total | 2 | 242
Commercial Business [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 18,935 | 10,357
2023 | 42,386 | 38,853
2022 | 9,605 | 10,158
2021 | 9,586 | 9,898
2020 | 7,055 | 8,201
Prior Years | 9,873 | 12,803
Total loans | 97,440 | 90,270
Commercial Business [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 133 | 133
2022 | 41 | 47
2021 | 190 | 190
2020 | 1,034 | 1,088
Prior Years | 56 | 56
Total loans | 1,454 | 1,514
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 2,287 | 1,956
2023 | 2,313 | 2,635
2022 | 1,569 | 1,830
2021 | 662 | 843
2020 | 301 | 394
Prior Years | 54 | 69
Total loans | 7,186 | 7,727
Current period charge-offs 2024 | (8) | (48)
Current period charge-offs 2022 | (1) |
Current period charge-offs 2021 |  | (1)
Current period charge-offs Total | (9) | (49)
Current period recoveries 2024 | 2 | 14
Current period recoveries Total | 2 | 14
Consumer [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 2,287 | 1,956
2023 | 2,291 | 2,635
2022 | 1,569 | 1,830
2021 | 662 | 843
2020 | 301 | 394
Prior Years | 54 | 69
Total loans | 7,164 | $ 7,727
Consumer [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2023 | 22 |
Total loans | $ 22 |

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