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v3.25.2

Significant Accounting Policies - Narrative (Details) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 21, 2025 USD ($) $ / shares shares | Apr. 14, 2025 | Jun. 30, 2025 USD ($) facility subsidiary segment shares | Jun. 30, 2024 USD ($) shares | Apr. 20, 2025 USD ($) | Jun. 30, 2023 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Sale of stock, percentage of ownership after transaction |  | 45.00% |  |  |  |
Shares of common stock issued | shares | 1,693,411 |  |  |  |  |
Shares issued to the ESOP | shares | 135,472 |  |  |  |  |
Share price | $ / shares | $ 10 |  |  |  |  |
Exchange ratio for conversion of shares | 1.3728 |  | 1.3728 |  |  |
Gross offering proceeds | $ 16,900,000 |  | $ 15,210,356 |  |  |
Offering expenses | $ 1,700,000 |  | $ 1,700,000 |  |  |
Shares released | shares | 135,472 |  | 6,473 | 4,799 |  |
Amount of ESOP loan | $ 2,100,000 |  |  |  | $ 777,212 |
Annual installments maturity term | 25 years |  |  |  |  |
Number of business facilities | facility |  |  | 5 |  |  |
Nonbank subsidiaries | subsidiary |  |  | 2 |  |  |
Accrued interest receivable on AFS securities |  |  | $ 64,377 | $ 83,986 |  |
Investment in restricted stock, at cost |  |  | 1,329,413 | 1,329,413 |  |
Loans held for sale |  |  | 0 | 0 |  |
Finance lease liability |  |  | 0 | 0 |  |
In process of foreclosure amount |  |  | 66,645 | 0 |  |
Foreclosed assets |  |  | 996,373 | 1,375,140 |  |
Unpaid principal balances of mortgage loans |  |  | 77,322,000 | 81,058,000 |  |
Unrecognized tax benefit |  |  | 0 | 0 |  |
Advertising costs |  |  | $ 42,183 | 61,234 |  |
Number of reportable segments | segment |  |  | 1 |  |  |
Number of operating segments | segment |  |  | 1 |  |  |
Interest bearing |  |  | $ 152,774,734 | 150,418,396 |  |
Non-interest bearing |  |  | 22,466,092 | 22,562,358 |  |
Interest bearing deposits held in other financial institutions |  |  | 237,247 | 199,888 |  |
Total liabilities |  |  | 193,125,579 | 188,001,212 |  |
Net Income (Loss) |  |  | 42,445 | (186,994) |  |
Total equity |  |  | 45,709,221 | 31,294,784 |  | $ 31,279,518
Retained Earnings |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Net Income (Loss) |  |  | 42,445 | (186,994) |  |
Total equity |  |  | $ 25,566,126 | 25,523,681 |  | $ 25,577,300
Marathon Mutual Holding Company |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Sale of stock, percentage of ownership before transaction |  | 55.00% |  |  |  |
Revision of Prior Period, Reclassification, Adjustment [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Interest bearing |  |  |  | 3,400,000 |  |
Non-interest bearing |  |  |  | (3,400,000) |  |
Total deposits |  |  |  | 0 |  |
Total liabilities |  |  |  | 0 |  |
Net Income (Loss) |  |  |  | 0 |  |
Total equity |  |  |  | 0 |  |
Buildings and improvements | Minimum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated useful lives |  |  | 5 years |  |  |
Buildings and improvements | Maximum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated useful lives |  |  | 40 years |  |  |
Furniture and equipment | Minimum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated useful lives |  |  | 3 years |  |  |
Furniture and equipment | Maximum |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Estimated useful lives |  |  | 10 years |  |  |
Other assets |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Servicing right asset |  |  | $ 730,533 | $ 776,659 |  |

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