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Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
Sep. 01, 2015 | Mar. 31, 2025 | Dec. 31, 2024
Common Stock, Shares, Outstanding (in shares) |  | 2,199,308 |
Basis of Accounting, Liquidation [Member] |  |  |
Net Assets |  | $ 30,812,390 | $ 30,596,313
Liquidation Basis of Accounting, Common Stock Per Share, Net (in dollars per share) |  | $ 14.01 | $ 13.91
Common Stock, Shares, Outstanding (in shares) |  | 2,199,308 |
The Corporation [Member] |  |  |
Maximum Value of Asset to Effect Dissolution | $ 1,000,000 | $ 1,000,000 |

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