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Note 16 - Subsequent Events (Details Textual) |  |  | 2 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 28, 2026 USD ($) $ / shares | Jan. 14, 2026 USD ($) | Mar. 26, 2026 USD ($) | Dec. 31, 2025 USD ($) $ / shares | Dec. 31, 2024 USD ($) | Dec. 24, 2015 USD ($)
Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |
Number of Real Estate Properties |  |  |  | 20 | 51 |
Real Estate Property, Consideration Transferred, Total |  |  |  | $ 9,800,000 | $ 24,800,000 |
Gain (Loss) on Sale of Properties |  |  |  | $ 1,000,000 | $ 3,400,000 |
Promissory Note [Member] | Bancorp Bank [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  | $ 17,727,500
Subsequent Event [Member] | Discontinued Operations, Disposed of by Sale [Member] |  |  |  |  |  |
Number of Real Estate Properties |  |  | 5 |  |  |
Real Estate Property, Consideration Transferred, Total |  |  | $ 2,500,000 |  |  |
Gain (Loss) on Sale of Properties |  |  | $ 100,000 |  |  |
Subsequent Event [Member] | Dakota Center [Member] |  |  |  |  |  |
Proceeds from Sale of Real Estate |  | $ 5,125,000 |  |  |  |
Series D Preferred Stock [Member] |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 9.375% |  |
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares |  |  |  | $ 2.34375 |  |
Series D Preferred Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 9.375% |  |  |  |  |
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares | $ 0.19531 |  |  |  |  |
Preferred Stock, Yearly Cash Savings From Dividends Suspension | $ 2,300,000 |  |  |  |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482130/360-10-45-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-3 + Details
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