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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 | 12 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | $ 43,030 | $ 56,417
2023 | 142,910 | 212,517
2022 | 177,235 | 99,138
2021 | 85,294 | 86,618
2020 | 79,971 | 29,700
Prior Years | 117,949 | 109,934
Total loans | 646,389 | 594,324
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 43,030 | 53,624
2023 | 142,763 | 212,452
2022 | 177,183 | 98,869
2021 | 84,877 | 84,506
2020 | 78,062 | 29,096
Prior Years | 117,237 | 109,593
Total loans | 643,152 | 588,140
Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 72 |
Prior Years |  | 335
Total loans | 72 | 335
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 |  | 2,793
2023 | 147 | 65
2022 | 52 | 269
2021 | 345 | 2,112
2020 | 1,909 | 604
Prior Years | 712 | 6
Total loans | 3,165 | 5,849
One- to four-family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 14,790 | 22,046
2023 | 39,216 | 56,060
2022 | 51,267 | 27,937
2021 | 24,439 | 18,529
2020 | 15,455 | 6,218
Prior Years | 32,096 | 33,064
Total loans | 177,263 | 163,854
Current period charge-offs Prior Years | 3 |
Current period charge-offs Total | 3 |
Current period recoveries Prior Years |  | 1
Current period recoveries Total |  | 1
One- to four-family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 14,790 | 22,032
2023 | 39,202 | 56,054
2022 | 51,262 | 27,843
2021 | 24,362 | 18,468
2020 | 15,455 | 5,996
Prior Years | 31,926 | 32,729
Total loans | 176,997 | 163,122
One- to four-family [Member] | Watch [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 72 |
Prior Years |  | 335
Total loans | 72 | 335
One- to four-family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 |  | 14
2023 | 14 | 6
2022 | 5 | 94
2021 | 5 | 61
2020 |  | 222
Prior Years | 170 |
Total loans | 194 | 397
Multi-family [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 573 | 674
2023 | 9,004 | 37,826
2022 | 51,279 | 10,647
2021 | 20,346 | 14,399
2020 | 22,728 | 8,831
Prior Years | 22,101 | 17,272
Total loans | 126,031 | 89,649
Multi-family [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 573 | 674
2023 | 9,004 | 37,826
2022 | 51,279 | 10,647
2021 | 20,346 | 14,399
2020 | 22,728 | 8,587
Prior Years | 21,867 | 17,272
Total loans | 125,797 | 89,405
Multi-family [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2020 |  | 244
Prior Years | 234 |
Total loans | 234 | 244
Home equity lines of credit [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,629 | 982
2023 | 2,361 | 2,554
2022 | 1,874 | 1,301
2021 | 1,806 | 1,035
2020 | 795 | 789
Prior Years | 1,394 | 1,405
Total loans | 9,859 | 8,066
Home equity lines of credit [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,629 | 982
2023 | 2,361 | 2,554
2022 | 1,874 | 1,301
2021 | 1,806 | 1,035
2020 | 795 | 789
Prior Years | 1,394 | 1,405
Total loans | 9,859 | 8,066
Construction [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 9,123 | 2,882
2023 | 21,043 | 29,188
2022 | 3,250 | 10,432
2021 |  | 8,471
Prior Years | 292 |
Total loans | 33,708 | 50,973
Construction [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 9,123 | 2,882
2023 | 21,043 | 29,188
2022 | 3,250 | 10,432
2021 |  | 8,471
Prior Years | 292 |
Total loans | 33,708 | 50,973
Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 4,602 | 12,214
2023 | 29,665 | 63,645
2022 | 57,530 | 29,320
2021 | 27,772 | 33,364
2020 | 31,310 | 5,925
Prior Years | 49,138 | 49,239
Total loans | 200,017 | 193,707
Commercial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 4,602 | 12,214
2023 | 29,665 | 63,645
2022 | 57,530 | 29,320
2021 | 27,622 | 32,502
2020 | 30,489 | 5,844
Prior Years | 48,886 | 49,239
Total loans | 198,794 | 192,764
Commercial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2021 | 150 | 862
2020 | 821 | 81
Prior Years | 252 |
Total loans | 1,223 | 943
Commercial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 10,357 | 15,228
2023 | 38,986 | 20,063
2022 | 10,205 | 17,847
2021 | 10,088 | 9,986
2020 | 9,289 | 7,726
Prior Years | 12,859 | 8,843
Total loans | 91,784 | 79,693
Current period charge-offs 2023 |  | (10)
Current period charge-offs 2022 |  | (4)
Current period charge-offs Total |  | (14)
Current period recoveries 2020 | 242 | 14
Current period recoveries Prior Years |  | 9
Current period recoveries Total | 242 | 23
Commercial [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 10,357 | 12,449
2023 | 38,853 | 20,004
2022 | 10,158 | 17,673
2021 | 9,898 | 8,797
2020 | 8,201 | 7,669
Prior Years | 12,803 | 8,841
Total loans | 90,270 | 75,433
Commercial [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 |  | 2,779
2023 | 133 | 59
2022 | 47 | 174
2021 | 190 | 1,189
2020 | 1,088 | 57
Prior Years | 56 | 2
Total loans | 1,514 | 4,260
Consumer [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,956 | 2,391
2023 | 2,635 | 3,181
2022 | 1,830 | 1,654
2021 | 843 | 834
2020 | 394 | 211
Prior Years | 69 | 111
Total loans | 7,727 | 8,382
Current period charge-offs 2024 | (48) | (33)
Current period charge-offs 2021 | (1) | (4)
Current period charge-offs Total | (49) | (37)
Current period recoveries 2024 | 14 | 14
Current period recoveries Prior Years |  | 1
Current period recoveries Total | 14 | 15
Consumer [Member] | Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2024 | 1,956 | 2,391
2023 | 2,635 | 3,181
2022 | 1,830 | 1,653
2021 | 843 | 834
2020 | 394 | 211
Prior Years | 69 | 107
Total loans | $ 7,727 | 8,377
Consumer [Member] | Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
2022 |  | 1
Prior Years |  | 4
Total loans |  | $ 5

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