Note 13 - Segments - Assets by Reportable Segment (Details) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|
| Total assets | [1] | $ 111,246,775 | $ 122,052,874 | |||||
| Cash, cash equivalents and restricted cash | 5,171,903 | 7,422,359 | ||||||
| Other assets, net | 10,752,169 | 13,403,170 | ||||||
| Operating Segments [Member] | ||||||||
| Total assets | 108,188,887 | 110,951,716 | ||||||
| Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] | ||||||||
| Cash, cash equivalents and restricted cash | 116,685 | 173,621 | ||||||
| Other assets, net | 2,941,203 | 10,927,537 | ||||||
| Office/Industrial Properties [Member] | Operating Segments [Member] | ||||||||
| Land, buildings and improvements, net | [2] | 61,748,416 | 67,445,290 | |||||
| Total assets | [3] | 69,016,593 | 68,980,087 | |||||
| Model Home Properties [Member] | Operating Segments [Member] | ||||||||
| Land, buildings and improvements, net | [2] | 34,253,639 | 36,688,462 | |||||
| Total assets | [3] | 34,519,643 | 37,301,777 | |||||
| Retail Properties [Member] | Operating Segments [Member] | ||||||||
| Land, buildings and improvements, net | [2] | 4,485,923 | 4,508,851 | |||||
| Total assets | [3] | $ 4,652,651 | $ 4,669,852 | |||||
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cash and cash equivalent, and cash and cash equivalent restricted to withdrawal or usage; attributable to continuing operation. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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