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Note 4 - Real Estate Assets (Details Textual) |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) ft² | Dec. 07, 2022 USD ($) ft² | Jun. 30, 2024 USD ($) a ft² | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) a ft² | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) | May 05, 2023 ft²
Number of States Real Estate Property is Located |  |  | 3 |  | 3 |  |  |
Number of Limited Partnerships in which Company is Sole General Partner |  |  | 5 |  |  |  |  |
Number of Limited Liability Companies |  |  | 2 |  | 2 |  |  |
Impairment of Real Estate |  |  | $ 101,245 | $ 0 | $ 196,793 | $ 0 |  |
Restricted Cash |  |  | $ 3,200,000 |  | $ 3,200,000 |  | $ 3,700,000 |
NetREIT Palm Self-Storage LP [Member] |  |  |  |  |  |  |  |
Subsidiary, Ownership Percentage, Parent |  |  | 61.30% |  | 61.30% |  |  |
Office/Industrial Properties [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property (Acre) | a |  |  | 758,175 |  | 758,175 |  |  |
Retail Properties [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property (Acre) | ft² |  |  | 65,242 |  | 65,242 |  |  |
Model Home [Member] |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 80 |  | 80 |  |  |
Area of Real Estate Property (Acre) | a |  |  | 241,309 |  | 241,309 |  |  |
Number of Limited Partnerships in which Company is Sole General Partner |  |  |  |  | 5 |  |  |
Number of Limited Liability Companies |  |  | 1 |  | 1 |  |  |
Office Buildings [Member] | Office/Industrial Properties [Member] |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 8 |  | 8 |  |  |
Office Building [Member] | Office/Industrial Properties [Member] |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 1 |  | 1 |  |  |
Retail Site [Member] | Retail Properties [Member] |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 3 |  | 3 |  |  |
Genesis Plaza [Member] | Tenant-in-common One [Member] |  |  |  |  |  |  |  |
Percentage Ownership in Property |  |  | 57.00% |  | 57.00% |  |  |
Genesis Plaza [Member] | Tenant-in-common Two [Member] |  |  |  |  |  |  |  |
Percentage Ownership in Property |  |  | 43.00% |  | 43.00% |  |  |
Percentage Beneficial Ownership in Property |  |  | 76.40% |  | 76.40% |  |  |
Grand Pacific Center [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property (Acre) | ft² |  | 33,296 |  |  |  |  |  | 33,296
Sale Leaseback Transaction, Annual Rental Payments |  | $ 532,736 |  |  |  |  |  |
One Park Centre [Member] |  |  |  |  |  |  |  |
Impairment of Real Estate |  |  |  |  |  |  | $ 2,000,000 |
Shea Center II [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property (Acre) | ft² | 45,535 |  |  |  |  |  |  |
Real Estate Property, Current Base Annual Rent | $ 536,080 |  |  |  |  |  |  |
Restricted Cash | $ 1,100,000 |  |  |  |  |  |  |
COLOMBIA |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 5 |  | 5 |  |  |
NORTH DAKOTA |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 4 |  | 4 |  |  |
CALIFORNIA |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 1 |  | 1 |  |  |
TEXAS |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 1 |  | 1 |  |  |
MARYLAND |  |  |  |  |  |  |  |
Number of Real Estate Properties |  |  | 1 |  | 1 |  |  |

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