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Condensed Statements of Cash Flows (Parenthetical) - USD ($)
Mar. 31, 2019
Mar. 31, 2018
Components of Cash and Cash Equivalents:    
Cash and Cash Equivalents $ 194,777,636 $ 303,769,409
Equity in Trading Accounts:    
Cash and Cash Equivalents 77,620,675 64,518,650
Total Cash, Cash Equivalents and Equity in Trading Accounts $ 272,398,311 $ 368,288,059