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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 $ 60,694,670 $ 112,107,560 $ 76,578,011
Change in unrealized gain (loss) on open commodity futures contracts (22,781,720) (17,234,420) 33,279,859
Realized gain (loss) on short-term investments     1,240
Dividend income 640,075 29,830 158,704
Interest income [1] 872,602 32,668 252,605
ETF transaction fees 11,200 14,350 33,264
Total Income (Loss) 39,436,827 94,949,988 110,303,683
Expenses      
General Partner management fees 759,048 1,074,705 1,080,769
Professional fees 140,802 288,152 231,301
Brokerage commissions 16,355 26,177 102,980
Directors' fees and insurance 46,961 46,172 17,435
License Fee 18,975 26,868 27,019
Registration fees 92,130 151,475 124,835
Total Expenses 1,074,271 1,613,549 1,584,339
Net Income (Loss) $ 38,362,556 $ 93,336,439 $ 108,719,344
Net Income (Loss) per limited partner share $ 7.64 $ 10.58 $ (5.72)
Net Income (Loss) per weighted average limited partner share $ 11.00 $ 12.18 $ 8.83
Weighted average limited partner shares outstanding 3,487,123 7,662,329 12,315,890
[1] Interest income does not exceed paid in kind of 5%