Loans - Amortized cost basis of collateral-dependent loans (Details) - USD ($) |
Dec. 31, 2025 |
Jun. 30, 2025 |
|---|---|---|
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||
| Total Collateral Dependent Loans | $ 190,013 | $ 66,645 |
| Residential | One-to-four-family residential | ||
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||
| Total Collateral Dependent Loans | 190,013 | 66,645 |
| Real Estate Secured Loans | ||
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||
| Total Collateral Dependent Loans | 190,013 | 66,645 |
| Real Estate Secured Loans | Residential | One-to-four-family residential | ||
| Financing Receivable, Allowance for Credit Loss [Line Items] | ||
| Total Collateral Dependent Loans | $ 190,013 | $ 66,645 |