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Note 7 - Investments (Details Textual) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 25, 2024 | Nov. 14, 2022 | Dec. 31, 2024 | Dec. 31, 2023
Treasury Stock, Shares, Acquired (in shares) | 52,000 |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 650 |  | $ 651 |
Treasury Stock, Common, Shares (in shares) | 342,080 |  | 342,080 | 290,080
Gain (Loss) on Investments |  |  | $ (91) | $ (740)
Series A Preferred Stock [Member] | FG Holdings LLC. [Member] |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 8.00% |  |
Preferred Stock, Total Return, Percentage of Positive Profits |  | 20.00% |  |
Series B Preferred Stock [Member] | FG Holdings LLC. [Member] |  |  |  |
Stock Issued During Period, Periodic Return on Investment, Percentage |  | 1.5 |  |
FG Holdings LLC. [Member] |  |  |  |
Realized Investment Gains (Losses) | $ (91) |  |  |
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments |  |  | 0 |
Investment Owned, Balance, Shares (in shares) |  |  |  | 5,666,111
Equity Method Investment, Ownership Percentage |  |  |  | 55.00%
Gain (Loss) on Investments |  |  | $ (91) | $ (740)

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