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Note 8 - Investments, Including Investments Accounted for Using the Equity Method (As Restated) - Reconciliation of the Company's Investments in Equity Affiliates (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Beginning of year $ 118,218,389 $ 61,660,905
Additional investments in unconsolidated affiliates 19,500 45,094,500
Distributions received (271,355) (642,511)
Reclassification of marketable securities to investment in affiliate 0 23,483
Transfer of interest 0 (625,498)
Gain on retained interest of deconsolidated affiliate 0 10,010,090
Reclassification to consolidated subsidiaries 15,832,981 0
Equity in income (loss) of unconsolidated affiliates (7,888,765) 2,697,420
End of year $ 94,244,788 $ 118,218,389