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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 ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Beginning of year $ 114,133,349 $ 61,660,905 $ 61,660,905
Additional investments in unconsolidated affiliates 0   45,094,500
Distributions received 0   (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
Equity in loss of unconsolidated affiliates (4,980,078) $ (3,675,303) (1,387,620)
End of period $ 109,153,271   $ 114,133,349