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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 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Beginning of period     $ 61,660,905 $ 20,913,896 $ 20,913,896
Additional investment in unconsolidated affiliate     45,000,000   55,000,000
Distributions received     (303,117)   (2,251,766)
Reclassification of marketable securities to investment in affiliate     23,483   0
Reclassification of investment in affiliate to marketable securities     0   (12,880,146)
Transfer of interest     (625,498)   0
Gain on retained interest of deconsolidated affiliate     10,010,090   0
Equity in (loss) income of unconsolidated affiliates $ 2,386,339 $ 435,988 (1,288,964) $ 576,285 878,921
End of period $ 114,476,899   $ 114,476,899   $ 61,660,905