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Loans and Allowance for Credit Losses - Allowance for Credit Losses (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2023
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | $ 7,450 | $ 7,023 | $ 7,139 | $ 7,052 | $ 7,052
Impact of adopting ASU 2016-13 |  |  |  | 47 | 47
Provision charged to expense | 437 | 142 | 747 | 75 | 52
Losses charged off | (18) | (9) | (25) | (25) | (51)
Recoveries | 66 | 10 | 74 | 17 | 39
Balance, end of period | 7,935 | 7,166 | 7,935 | 7,166 | 7,139
Loans: |  |  |  |  |
Ending balance | 661,147 | 568,240 | 661,147 | 568,240 | 594,324
One- to four-family [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 1,906 | 1,537 | 1,898 | 1,028 | 1,028
Impact of adopting ASU 2016-13 |  |  |  | 382 | 382
Provision charged to expense | (97) | 185 | (89) | 311 | 487
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 1 | 1
Balance, end of period | 1,809 | 1,722 | 1,809 | 1,722 | 1,898
Loans: |  |  |  |  |
Ending balance | 175,817 | 150,711 | 175,817 | 150,711 | 163,854
Multi-family [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 1,115 | 1,284 | 1,121 | 1,375 | 1,375
Impact of adopting ASU 2016-13 |  |  |  | (140) | (140)
Provision charged to expense | 750 | 118 | 744 | 167 | (114)
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Balance, end of period | 1,865 | 1,402 | 1,865 | 1,402 | 1,121
Loans: |  |  |  |  |
Ending balance | 128,625 | 100,147 | 128,625 | 100,147 | 89,649
Home equity lines of credit [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 134 | 94 | 121 | 70 | 70
Impact of adopting ASU 2016-13 |  |  |  | 33 | 33
Provision charged to expense | 13 | 7 | 26 | (2) | 18
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Balance, end of period | 147 | 101 | 147 | 101 | 121
Loans: |  |  |  |  |
Ending balance | 9,494 | 6,926 | 9,494 | 6,926 | 8,066
Construction [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 1,165 | 549 | 765 | 489 | 489
Impact of adopting ASU 2016-13 |  |  |  | 192 | 192
Provision charged to expense | (626) | 36 | (226) | (96) | 84
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Balance, end of period | 539 | 585 | 539 | 585 | 765
Loans: |  |  |  |  |
Ending balance | 39,906 | 36,595 | 39,906 | 36,595 | 50,973
Commercial [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 2,265 | 2,386 | 2,369 | 1,985 | 1,985
Impact of adopting ASU 2016-13 |  |  |  | 385 | 385
Provision charged to expense | 328 | 6 | 224 | 22 | (1)
Losses charged off | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Balance, end of period | 2,593 | 2,392 | 2,593 | 2,392 | 2,369
Loans: |  |  |  |  |
Ending balance | 215,565 | 192,015 | 215,565 | 192,015 | 193,707
Commercial [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 788 | 1,090 | 794 | 2,025 | 2,025
Impact of adopting ASU 2016-13 |  |  |  | (818) | (818)
Provision charged to expense | 66 | (227) | 54 | (344) | (422)
Losses charged off | 0 | 0 | 0 | (4) | (14)
Recoveries | 61 | 8 | 67 | 12 | 23
Balance, end of period | 915 | 871 | 915 | 871 | 794
Loans: |  |  |  |  |
Ending balance | 83,698 | 72,360 | 83,698 | 72,360 | 79,693
Consumer [Member] |  |  |  |  |
Allowance for loan losses: |  |  |  |  |
Balance, beginning of year | 77 | 83 | 71 | 80 | 80
Impact of adopting ASU 2016-13 |  |  |  | 13 | 13
Provision charged to expense | 3 | 17 | 14 | 17 | 0
Losses charged off | (18) | (9) | (25) | (21) | (37)
Recoveries | 5 | 2 | 7 | 4 | 15
Balance, end of period | 67 | 93 | 67 | 93 | 71
Loans: |  |  |  |  |
Ending balance | $ 8,042 | $ 9,486 | $ 8,042 | $ 9,486 | $ 8,382

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