Note 5 - Lease Intangibles - Net Value of Other Intangibles (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Lease intangibles, gross | $ 1,400,602 | $ 3,467,798 |
| Accumulated Amortization | (1,399,575) | (3,463,694) |
| Lease Intangibles, net | 1,027 | 4,104 |
| Leases, Acquired-in-Place [Member] | ||
| Lease intangibles, gross | 932,175 | 2,377,414 |
| Accumulated Amortization | (931,717) | (2,375,580) |
| Lease Intangibles, net | 459 | 1,834 |
| Leases, Acquired-in-Place [Member] | Shea Center II [Member] | ||
| Lease intangibles, gross | 1,445,239 | 0 |
| Accumulated Amortization | (1,445,239) | 0 |
| Lease Intangibles, net | 0 | 0 |
| Leasing Costs [Member] | ||
| Lease intangibles, gross | 468,427 | 1,090,384 |
| Accumulated Amortization | (467,859) | (1,088,114) |
| Lease Intangibles, net | 568 | 2,270 |
| Leasing Costs [Member] | Shea Center II [Member] | ||
| Lease intangibles, gross | 621,957 | 0 |
| Accumulated Amortization | (621,957) | 0 |
| Lease Intangibles, net | $ 0 | $ 0 |