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Note 5 - Net Income Per Common Unit (Details Textual) - $ / shares | Sep. 30, 2023 | Sep. 18, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Mar. 02, 2017
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Warrants at 34.00 Strike Price [Member] |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  | $ 34
Warrants at 22.81 Strike Price [Member] |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  | $ 22.81
Warrant Holder [Member] | Warrants at 34.00 Strike Price [Member] |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 2,190,000 | 60,000 | 2,250,000 | 2,250,000 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 34 | $ 34 | $ 34 | $ 34 |
Warrant Holder [Member] | Warrants at 22.81 Strike Price [Member] |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 0 | 752,500 | 750,000 | 750,000 |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 22.81 | $ 22.81 | $ 22.81 | $ 22.81 |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 + Details
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