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Statements of Operations - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Gain (loss) on trading of commodity futures contracts:      
Realized gain (loss) on closed commodity futures contracts $ 218,669,630 $ 6,104,950 $ (206,518,620)
Change in unrealized gain (loss) on open commodity futures contracts (146,128,350) 15,817,312 6,313,791
Dividend income 5,230,113 48,789 832,573
Interest income [1] 2,036,445 70,125 1,846,120
ETF transaction fees 209,000 107,000 158,070
Total Income (Loss) 80,016,838 22,148,176 (197,368,066)
Expenses      
General Partner management fees 2,824,586 2,024,410 2,413,189
Professional fees 1,283,049 693,849 647,911
Brokerage commissions 702,686 794,337 1,879,043
Directors' fees and insurance 106,413 81,479 83,030
License Fees 70,615 50,610 60,330
Registration fees   103,290 364,200
Total Expenses 4,987,349 3,747,975 5,447,703
Net Income (Loss) $ 75,029,489 $ 18,400,201 $ (202,815,769)
Net Income (Loss) per limited partner share $ 1.83 $ 3.19 $ (7.71)
Net Income (Loss) per weighted average limited partner share $ 3.43 $ 0.69 $ (6.11)
Weighted average limited partner shares outstanding 21,883,766 26,747,876 33,208,424
[1] Interest income does not exceed paid in kind of 5%.