FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Effect of Derivative Instruments on Statements of Operations (Details) - USD ($)	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
FAIR VALUE OF FINANCIAL INSTRUMENTS
Location of Gain (Loss) on Derivatives Recognized in Income	Unrealized Gain (Loss) On Investments	Unrealized Gain (Loss) On Investments	Unrealized Gain (Loss) On Investments
Change in unrealized gain (loss) on open commodity futures contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income	$ 3,782,570	$ (16,427,730)	$ 2,763,860
Futures - Commodity Contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Location of Gain (Loss) on Derivatives Recognized in Income	Realized gain (loss) on closed commodity futures contracts	Realized gain (loss) on closed commodity futures contracts	Realized gain (loss) on closed commodity futures contracts
Futures - Commodity Contracts \| Realized gain (loss) on closed commodity futures contracts
FAIR VALUE OF FINANCIAL INSTRUMENTS
Realized Gain (Loss) in Derivatives Recognized in Income	$ 1,237,760	$ 5,488,970	$ 79,019,530

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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