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Note 4 - Real Estate Assets (Tables) | 12 Months Ended
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Dec. 31, 2025
Notes Tables |
Schedule of Real Estate Properties [Table Text Block] |
|  | Date |  |  |  | Real estate assets and lease intangibles, net |
Property Name |  | Acquired |  | Location |  | December 31, 2025 |  |  | December 31, 2024 |
Genesis Plaza (1) |  | August 2010 |  | San Diego, CA |  | $ | 7,274,600 |  |  | $ | 7,363,571 |
Dakota Center (2) |  | May 2011 |  | Fargo, ND |  |  | 4,861,267 |  |  |  | 8,154,951 |
Grand Pacific Center (3) |  | March 2014 |  | Bismarck, ND |  |  | 8,082,202 |  |  |  | 8,413,926 |
Arapahoe Center |  | December 2014 |  | Centennial, CO |  |  | 8,874,198 |  |  |  | 9,298,534 |
Union Town Center (3) |  | December 2014 |  | Colorado Springs, CO |  |  | — |  |  |  | 8,922,943 |
West Fargo Industrial |  | August 2015 |  | Fargo, ND |  |  | 6,404,774 |  |  |  | 6,599,953 |
300 N.P. |  | August 2015 |  | Fargo, ND |  |  | 1,949,040 |  |  |  | 1,963,000 |
Research Parkway (3) |  | August 2015 |  | Colorado Springs, CO |  |  | — |  |  |  | 2,220,284 |
One Park Center |  | August 2015 |  | Westminster, CO |  |  | 5,740,065 |  |  |  | 5,580,950 |
Shea Center II (4) |  | December 2015 |  | Highlands Ranch, CO |  |  | 16,249,498 |  |  |  | 18,820,370 |
Mandolin (5) |  | August 2021 |  | Houston, TX |  |  | 4,508,851 |  |  |  | 4,600,562 |
Baltimore |  | December 2021 |  | Baltimore, MD |  |  | 8,016,747 |  |  |  | 8,241,456 |
Commercial properties |  |  |  |  |  |  |  | 71,961,242 |  |  |  | 90,180,500 |
Model Home properties (6) |  | 2020 - 2025 |  |  |  |  | 36,688,462 |  |  |  | 37,416,000 |
Total real estate assets and lease intangibles, net |  |  |  |  |  |  | $ | 108,649,704 |  |  | $ | 127,596,500 |

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