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Condensed Statements of Cash Flows (Parenthetical) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Components of Cash and Cash Equivalents:      
Cash and cash equivalents $ 311,507,932 $ 72,725,833 $ 62,639,874
Equity in Trading Accounts:      
Cash and cash equivalents 33,830,326 10,877,607 17,417,768
Total Cash, Cash Equivalents and Equity in Trading Accounts $ 345,338,258 $ 83,603,440 $ 80,057,642