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Loans and Allowance for Credit Losses - Association's Loan Portfolio Aging Analysis (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | $ 2,600 | $ 1,863 |
Current | 652,033 | 644,526 |
Total loans | 654,633 | 646,389 | $ 661,147
Total Loans > 90 Days & Accruing | 52 |  |
Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 676 | 150 |
Current | 204,672 | 199,867 |
Total loans | 205,348 | 200,017 | 215,565
Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 101 | 41 |
Current | 93,941 | 91,743 |
Total loans | 94,042 | 91,784 | 83,698
Total Loans > 90 Days & Accruing | 52 |  |
Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 54 | 51 |
Current | 6,872 | 7,676 |
Total loans | 6,926 | 7,727 | 8,042
One- to four-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 1,626 | 1,201 |
Current | 176,107 | 176,062 |
Total loans | 177,733 | 177,263 | 175,817
Multi-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 143 | 141 |
Current | 129,228 | 125,890 |
Total loans | 129,371 | 126,031 | 128,625
Home equity lines of credit [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 42 |
Current | 9,887 | 9,817 |
Total loans | 9,887 | 9,859 | 9,494
Construction [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 237 |
Current | 31,326 | 33,471 |
Total loans | 31,326 | 33,708 | $ 39,906
Financing Receivables, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 2,082 | 1,452 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 676 |  |
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 21 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 34 | 27 |
Financing Receivables, 30 to 59 Days Past Due [Member] | One- to four-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 1,347 | 1,009 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Multi-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 25 | 141 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Home equity lines of credit [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 17 |
Financing Receivables, 30 to 59 Days Past Due [Member] | Construction [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 237 |
Financing Receivables, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 429 | 238 |
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 49 | 20 |
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 20 | 1 |
Financing Receivables, 60 to 89 Days Past Due [Member] | One- to four-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 242 | 192 |
Financing Receivables, 60 to 89 Days Past Due [Member] | Multi-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 118 |  |
Financing Receivables, 60 to 89 Days Past Due [Member] | Home equity lines of credit [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 25 |
Financing Receivables, Greater Than 90 Days [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 89 | 173 |
Financing Receivables, Greater Than 90 Days [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | 150 |
Financing Receivables, Greater Than 90 Days [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | 52 |  |
Financing Receivables, Greater Than 90 Days [Member] | Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due |  | $ 23 |
Financing Receivables, Greater Than 90 Days [Member] | One- to four-family [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |
Total Past Due | $ 37 |  |

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