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FAIR VALUE OF FINANCIAL INSTRUMENTS - Effect of Derivative Instruments (Details) - USD ($)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Location of Gain (Loss) on Derivatives Recognized in Income Realized gain (loss) on closed positions  
Realized Gain (Loss) on Derivatives Recognized in Income $ 63,479,920 $ 14,459,540
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income $ (7,628,810) $ (341,900)
Commodity Contract [Member]    
Location of Gain (Loss) on Derivatives Recognized in Income Change in unrealized gain (loss) on open positions