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Note 11 - Commitments (Details Textual) - USD ($) |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 14, 2023 | Sep. 05, 2023 | Mar. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 04, 2023 | Jan. 01, 2020
Other Commitment, Total |  |  | $ 381,500 |  |  |  |  |  |  |
Retention Bonus Plan, Minimum Internal Rate of Return Percentage |  | 4.00% |  |  |  |  |  |  |  |
Retention Bonus Plan, Minimum Account Balance for Early Payment |  | $ 500,000 |  |  |  |  |  |  |  |
Retention bonus Plan, Additional Percentage for Property Sales |  | 1.00% |  |  |  |  |  |  |  |
Payment for Retention Bonus Plan |  |  | $ 0 |  |  |  |  |  |  |
Deferred Compensation Arrangement Fixed Interest Rate |  |  |  |  |  |  |  |  |  | 5.00%
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 91,628 |  |  |  |  |  |  |
Stock Plan [Member] |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) | 91,628 |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized | 91,628 |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum | 5.80% |  |  |  |  |  |  |  |  |
Rights Offering [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum |  |  | 4.20% |  |  |  |  |  |  |
Chief Executive Officer [Member] | Bonus Payable [Member] |  |  |  |  |  |  |  |  |  |
Other Commitment, Total |  |  | $ 125,000 |  |  |  |  |  |  |
Other Employees [Member] |  |  |  |  |  |  |  |  |  |
Supplemental Unemployment Benefits, Severance Benefits |  |  | $ 31,500 |  |  |  |  |  |  |
Bonus Pool Distribution Proportions |  | 2.143% |  |  |  |  |  |  | 0.75% |
Director [Member] |  |  |  |  |  |  |  |  |  |
Retention Bonus Plan, Forfeited Benefits |  | $ 1,137,108 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) |  | 91,628 |  |  |  |  |  |  |  |
Employees [Member] |  |  |  |  |  |  |  |  |  |
Retention Bonus Plan, Minimum Internal Rate of Return Percentage |  | 4.12% |  |  |  |  |  |  |  |
Real Estate Value, Net of Commissions |  | $ 50,985,000 |  |  |  |  |  |  |  |
Bonus Pool Funding as Percentage of Appraised Value of Contributed Properties |  | 6.72% |  |  |  |  |  |  |  |
Board of Directors Chairman [Member] |  |  |  |  |  |  |  |  |  |
Bonus Pool Distribution Proportions |  | 18.75% |  |  |  |  |  |  | 15.00% |
Other 3 Directors [Member] |  |  |  |  |  |  |  |  |  |
Bonus Pool Distribution Proportions |  | 12.50% |  |  |  |  |  |  | 10.00% |
Officers and Employees [Member] |  |  |  |  |  |  |  |  |  |
Bonus Pool Distribution Proportions |  | 8.857% |  |  |  |  |  |  | 3.10% |
Director 1 [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 30,542 |  |  |  |  |  |  |
Director 2 [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 20,362 |  |  |  |  |  |  |
Director 3 [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 20,362 |  |  |  |  |  |  |
Director 4 [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 20,362 |  |  |  |  |  |  |
Most Directors [Member] |  |  |  |  |  |  |  |  |  |
Director Fees, Deferred, Percentage |  |  |  | 100.00% | 100.00% | 100.00% | 100.00% | 100.00% |  |

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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
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