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Loans - Schedule of Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Residential real estate |  |
Beginning balance | $ 2,127 |
Provision for (recovery of) credit losses on loans | 39 | $ 24
Loans charged off |  | (26)
Recoveries | 7 | 4
Credit Losses for Unfunded Liabilities | (3) | (6)
Ending balance | 2,170 | 2,127
One- to four-family [Member] |  |
Residential real estate |  |
Beginning balance | 1,661 |
Provision for (recovery of) credit losses on loans | 29 | 82
Loans charged off |  | (18)
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 1,690 | 1,661
Multi-family [Member] |  |
Residential real estate |  |
Beginning balance | 100 |
Provision for (recovery of) credit losses on loans | (14) | (33)
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 86 | 100
Construction [Member] |  |
Residential real estate |  |
Beginning balance | 122 |
Provision for (recovery of) credit losses on loans | (49) | (12)
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities | (3) | (4)
Ending balance | 70 | 122
Land [Member] |  |
Residential real estate |  |
Beginning balance | 28 |
Provision for (recovery of) credit losses on loans | (4) | 13
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 24 | 28
Farm Loan [Member] |  |
Residential real estate |  |
Beginning balance | 4 |
Provision for (recovery of) credit losses on loans | 12 | (2)
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 16 | 4
Nonresidential real estate [Member] |  |
Residential real estate |  |
Beginning balance | 192 |
Provision for (recovery of) credit losses on loans | 38 | 8
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 230 | 192
Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance | 3 |
Provision for (recovery of) credit losses on loans | 4 |
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 7 | 3
Loans on deposits [Member] |  |
Residential real estate |  |
Beginning balance |  |
Provision for (recovery of) credit losses on loans |  |
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance |  |
Home Equity [Member] |  |
Residential real estate |  |
Beginning balance | 14 |
Provision for (recovery of) credit losses on loans | 15 | (31)
Loans charged off |  | (8)
Recoveries | 7 | 4
Credit Losses for Unfunded Liabilities |  | (2)
Ending balance | 36 | 14
Automobile Loan [Member] |  |
Residential real estate |  |
Beginning balance |  |
Provision for (recovery of) credit losses on loans | 1 | (1)
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 1 |
Unsecured Loan Member |  |
Residential real estate |  |
Beginning balance | 3 |
Provision for (recovery of) credit losses on loans | 7 | 2
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance | 10 | 3
Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance | $ 3 |
Provision for (recovery of) credit losses on loans |  | (2)
Loans charged off |  |
Recoveries |  |
Credit Losses for Unfunded Liabilities |  |
Ending balance |  | 3
Pre-ASC 326 Adoption [Member] |  |
Residential real estate |  |
Beginning balance |  | 1,634
Pre-ASC 326 Adoption [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Beginning balance |  | 857
Pre-ASC 326 Adoption [Member] | Multi-family [Member] |  |
Residential real estate |  |
Beginning balance |  | 278
Pre-ASC 326 Adoption [Member] | Construction [Member] |  |
Residential real estate |  |
Beginning balance |  | 41
Pre-ASC 326 Adoption [Member] | Land [Member] |  |
Residential real estate |  |
Beginning balance |  | 1
Pre-ASC 326 Adoption [Member] | Farm Loan [Member] |  |
Residential real estate |  |
Beginning balance |  | 4
Pre-ASC 326 Adoption [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Beginning balance |  | 405
Pre-ASC 326 Adoption [Member] | Loans on deposits [Member] |  |
Residential real estate |  |
Beginning balance |  | 1
Pre-ASC 326 Adoption [Member] | Home Equity [Member] |  |
Residential real estate |  |
Beginning balance |  | 23
Pre-ASC 326 Adoption [Member] | Automobile Loan [Member] |  |
Residential real estate |  |
Beginning balance |  |
Pre-ASC 326 Adoption [Member] | Unsecured Loan Member |  |
Residential real estate |  |
Beginning balance |  | 1
Pre-ASC 326 Adoption [Member] | Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance |  | 23
Impact of ASC 326 Adoption [Member] |  |
Residential real estate |  |
Beginning balance |  | 497
Impact of ASC 326 Adoption [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Beginning balance |  | 740
Impact of ASC 326 Adoption [Member] | Multi-family [Member] |  |
Residential real estate |  |
Beginning balance |  | (145)
Impact of ASC 326 Adoption [Member] | Construction [Member] |  |
Residential real estate |  |
Beginning balance |  | 97
Impact of ASC 326 Adoption [Member] | Land [Member] |  |
Residential real estate |  |
Beginning balance |  | 14
Impact of ASC 326 Adoption [Member] | Farm Loan [Member] |  |
Residential real estate |  |
Beginning balance |  | 2
Impact of ASC 326 Adoption [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Beginning balance |  | (221)
Impact of ASC 326 Adoption [Member] | Loans on deposits [Member] |  |
Residential real estate |  |
Beginning balance |  | (1)
Impact of ASC 326 Adoption [Member] | Home Equity [Member] |  |
Residential real estate |  |
Beginning balance |  | 28
Impact of ASC 326 Adoption [Member] | Automobile Loan [Member] |  |
Residential real estate |  |
Beginning balance |  | 1
Impact of ASC 326 Adoption [Member] | Unsecured Loan Member |  |
Residential real estate |  |
Beginning balance |  |
Impact of ASC 326 Adoption [Member] | Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance |  | (18)
As Reported Under ASC 326 [Member] |  |
Residential real estate |  |
Beginning balance |  | 2,131
As Reported Under ASC 326 [Member] | One- to four-family [Member] |  |
Residential real estate |  |
Beginning balance |  | 1,597
As Reported Under ASC 326 [Member] | Multi-family [Member] |  |
Residential real estate |  |
Beginning balance |  | 133
As Reported Under ASC 326 [Member] | Construction [Member] |  |
Residential real estate |  |
Beginning balance |  | 138
As Reported Under ASC 326 [Member] | Land [Member] |  |
Residential real estate |  |
Beginning balance |  | 15
As Reported Under ASC 326 [Member] | Farm Loan [Member] |  |
Residential real estate |  |
Beginning balance |  | 6
As Reported Under ASC 326 [Member] | Nonresidential real estate [Member] |  |
Residential real estate |  |
Beginning balance |  | 184
As Reported Under ASC 326 [Member] | Loans on deposits [Member] |  |
Residential real estate |  |
Beginning balance |  |
As Reported Under ASC 326 [Member] | Home Equity [Member] |  |
Residential real estate |  |
Beginning balance |  | 51
As Reported Under ASC 326 [Member] | Automobile Loan [Member] |  |
Residential real estate |  |
Beginning balance |  | 1
As Reported Under ASC 326 [Member] | Unsecured Loan Member |  |
Residential real estate |  |
Beginning balance |  | 1
As Reported Under ASC 326 [Member] | Commercial and industrial [Member] |  |
Residential real estate |  |
Beginning balance |  | $ 5

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