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Note 9 - Fair Value - Fair Values for Investments (Details) | 9 Months Ended
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Sep. 30, 2021 USD ($)
Realized gains and (losses) | $ 37,854,470
Total changes in fair values included in current period earnings (loss) | 47,904,192
Reported Value Measurement [Member] |
Marketable equity securities and U.S. Treasury trading securities | 131,272,283
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |
Marketable equity securities and U.S. Treasury trading securities | $ 131,272,283

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- Definition Cost of investment in debt investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. + References No definition available. + Details
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