Note 5 - Lease Intangibles - Net Value of Other Intangibles (Details) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Lease intangibles, gross | $ 1,400,602 | $ 3,467,798 |
| Accumulated Amortization | (1,398,035) | (3,463,694) |
| Lease Intangibles, net | 2,567 | 4,104 |
| Leases, Acquired-in-Place [Member] | ||
| Lease intangibles, gross | 932,175 | 2,377,414 |
| Accumulated Amortization | (931,029) | (2,375,580) |
| Lease Intangibles, net | 1,146 | 1,834 |
| Leasing Costs [Member] | ||
| Lease intangibles, gross | 468,427 | 1,090,384 |
| Accumulated Amortization | (467,006) | (1,088,114) |
| Lease Intangibles, net | $ 1,421 | $ 2,270 |
| X | ||||||||||
- Definition Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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