| Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
| | | June 30, | | | December 31, | |
| | | 2026 | | | 2025 | |
| | | (dollars in thousands) | |
| Residential real estate | | $ | 29,120 | | | $ | 30,037 | |
| Construction | | | 151 | | | | - | |
| Commercial real estate | | | 590 | | | | 476 | |
| Total real estate loans | | | 29,861 | | | | 30,513 | |
| Share loans | | | 208 | | | | 212 | |
| Total loans | | | 30,069 | | | | 30,725 | |
| Unamortized, net deferred loan costs | | | 188 | | | | 179 | |
| Less allowance for credit losses | | | (185 | ) | | | (185 | ) |
| Loans receivable, net | | $ | 30,072 | | | $ | 30,719 | |
|
| Financing Receivable, Past Due [Table Text Block] |
| | | As of June 30, 2026 | |
| | | 30 to 89 days past due | | | 90 days and over past due | | | Current Loans | | | Total | | | Past due greater than 90 days accruing | |
| | | (dollars in thousands) | |
| Residential real estate | | $ | 88 | | | $ | 67 | | | $ | 28,965 | | | $ | 29,120 | | | $ | - | |
| Construction | | | - | | | | - | | | | 151 | | | | 151 | | | | - | |
| Commercial real estate | | | - | | | | - | | | | 590 | | | | 590 | | | | - | |
| Share loans | | | - | | | | - | | | | 208 | | | | 208 | | | | - | |
| Loans receivable, total | | $ | 88 | | | $ | 67 | | | $ | 29,914 | | | $ | 30,069 | | | $ | - | |
| | | As of December 31, 2025 | |
| | | 30 to 89 days past due | | | 90 days and over past due | | | Current Loans | | | Total | | | Past due greater than 90 days accruing | |
| | | (dollars in thousands) | |
| Residential real estate | | $ | - | | | $ | 136 | | | $ | 29,901 | | | $ | 30,037 | | | $ | - | |
| Construction | | | - | | | | - | | | | - | | | | - | | | | - | |
| Commercial real estate | | | - | | | | - | | | | 476 | | | | 476 | | | | - | |
| Share loans | | | - | | | | - | | | | 212 | | | | 212 | | | | - | |
| Loans receivable, total | | $ | - | | | $ | 136 | | | $ | 30,589 | | | $ | 30,725 | | | $ | - | |
|
| Financing Receivable Credit Quality Indicators [Table Text Block] |
| June 30, 2026 (dollars in thousands) | | 2026 | | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | Prior | | | Total | |
| Residential Real Estate: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | 1,369 | | | $ | 4,500 | | | $ | 1,186 | | | $ | 1,574 | | | $ | 4,912 | | | $ | 15,512 | | | $ | 29,053 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | 67 | | | | 67 | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 1,369 | | | $ | 4,500 | | | $ | 1,186 | | | $ | 1,574 | | | $ | 4,912 | | | $ | 15,579 | | | $ | 29,120 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Construction: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | - | | | $ | 151 | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 151 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | - | | | $ | 151 | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 151 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial Real Estate: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | 179 | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 411 | | | $ | 590 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 179 | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 411 | | | $ | 590 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Share Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 155 | | | $ | 53 | | | $ | 208 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 155 | | | $ | 53 | | | $ | 208 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Total Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | 1,548 | | | $ | 4,651 | | | $ | 1,186 | | | $ | 1,574 | | | $ | 5,067 | | | $ | 15,976 | | | $ | 30,002 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | 67 | | | | 67 | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 1,548 | | | $ | 4,651 | | | $ | 1,186 | | | $ | 1,574 | | | $ | 5,067 | | | $ | 16,043 | | | $ | 30,069 | |
| Current period gross charge-offs | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | |
| December 31, 2025 (dollars in thousands) | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | 2021 | | | Prior | | | Total | |
| Residential Real Estate: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | 4,814 | | | $ | 1,226 | | | $ | 1,911 | | | $ | 5,039 | | | $ | 4,688 | | | $ | 12,223 | | | $ | 29,901 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | 136 | | | | 136 | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 4,814 | | | $ | 1,226 | | | $ | 1,911 | | | $ | 5,039 | | | $ | 4,688 | | | $ | 12,359 | | | $ | 30,037 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Construction: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial Real Estate: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 476 | | | $ | 476 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | 476 | | | $ | 476 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Share Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | - | | | $ | - | | | $ | - | | | $ | 159 | | | $ | - | | | $ | 53 | | | $ | 212 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | - | | | $ | - | | | $ | - | | | $ | 159 | | | $ | - | | | $ | 53 | | | $ | 212 | |
| Current period gross charge-offs | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Total Loans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass/Watch | | $ | 4,814 | | | $ | 1,226 | | | $ | 1,911 | | | $ | 5,198 | | | $ | 4,688 | | | $ | 12,752 | | | $ | 30,589 | |
| Special Mention | | | - | | | | - | | | | - | | | | - | | | | - | | | | 136 | | | | 136 | |
| Classified | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Total | | $ | 4,814 | | | $ | 1,226 | | | $ | 1,911 | | | $ | 5,198 | | | $ | 4,688 | | | $ | 12,887 | | | $ | 30,725 | |
| Current period gross charge-offs | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | |
|