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Note 8 - Investments, Including Investments Accounted for Using the Equity Method - Summarized Financial Data (Details) - USD ($)
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenue $ 16,292,947 $ 13,205,019
Gross profit 10,673,909 8,457,849
Net income 16,368,771 88,120,060
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]    
Revenue 6,612,827 9,416,765
Gross profit 3,261,322 6,637,948
Income from continuing operations (5,134,293) 20,713
Net income $ (18,695,284) $ (453,471)