Schedule of Investments - Futures Contracts | 12 Months Ended |
Dec. 31, 2020USD ($)Contract | Dec. 31, 2019USD ($)Contract |
Schedule of Investments [Line Items] | | | |
Investments in Securities, Value | | $ 1,290,974,857 | $ 1,432,745,979 |
Futures [Member] | Long [Member] | | | |
Schedule of Investments [Line Items] | | | |
Investments in Securities, Value | [1] | 148,843,441 | 47,694,395 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 148,843,441 | $ 47,694,395 |
Futures [Member] | Long [Member] | CBOT Corn [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 3,432 | 3,905 |
Commodity Futures Contracts, Expiration Date | | Sep. 30, 2021 | Sep. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 76,619,400 | $ 78,295,250 |
Investments in Securities, Value | [1] | 13,698,838 | (3,026,104) |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 13,698,838 | $ (3,026,104) |
Futures [Member] | Long [Member] | CBOT Soybean [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 1,357 | 1,602 |
Commodity Futures Contracts, Expiration Date | | Nov. 30, 2021 | Nov. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 75,432,238 | $ 78,397,875 |
Investments in Securities, Value | [1] | 8,764,789 | 1,276,086 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 8,764,789 | $ 1,276,086 |
Futures [Member] | Long [Member] | CBOT Wheat [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 2,267 | 2,954 |
Commodity Futures Contracts, Expiration Date | | Jul. 31, 2021 | Jul. 31, 2020 |
Commodity Futures Contracts, Notional Value | | $ 71,212,137 | $ 83,228,950 |
Investments in Securities, Value | [1] | 10,140,859 | 3,287,335 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 10,140,859 | $ 3,287,335 |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (COMEX) Gold [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 522 | 749 |
Commodity Futures Contracts, Expiration Date | | Feb. 28, 2021 | Feb. 29, 2020 |
Commodity Futures Contracts, Notional Value | | $ 98,924,220 | $ 114,080,190 |
Investments in Securities, Value | [1] | 8,422,812 | 14,071,689 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 8,422,812 | $ 14,071,689 |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (COMEX) Silver [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 204 | 323 |
Commodity Futures Contracts, Expiration Date | | May 31, 2021 | May 31, 2020 |
Commodity Futures Contracts, Notional Value | | $ 27,002,460 | $ 29,084,535 |
Investments in Securities, Value | [1] | 6,274,804 | 3,636,158 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 6,274,804 | $ 3,636,158 |
Futures [Member] | Long [Member] | ICE FUTURES EUROPE Brent Crude Oil [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 3,344 | 2,802 |
Commodity Futures Contracts, Expiration Date | | Nov. 30, 2021 | Jan. 31, 2020 |
Commodity Futures Contracts, Notional Value | | $ 169,239,840 | $ 184,932,000 |
Investments in Securities, Value | [1] | 18,862,705 | 10,124,770 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 18,862,705 | $ 10,124,770 |
Futures [Member] | Long [Member] | LME CLEAR Aluminum [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 1,063 | 1,259 |
Commodity Futures Contracts, Expiration Date | | May 31, 2021 | Apr. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 52,784,594 | $ 57,111,388 |
Investments in Securities, Value | [1] | 8,099,254 | 1,559,850 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 8,099,254 | $ 1,559,850 |
Futures [Member] | Long [Member] | LME CLEAR Copper [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 293 | 386 |
Commodity Futures Contracts, Expiration Date | | May 31, 2021 | Jun. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 56,909,756 | $ 59,694,900 |
Investments in Securities, Value | [1] | 13,145,981 | 4,507,945 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 13,145,981 | $ 4,507,945 |
Futures [Member] | Long [Member] | LME CLEAR Zinc [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 762 | 924 |
Commodity Futures Contracts, Expiration Date | | Aug. 31, 2021 | Mar. 31, 2020 |
Commodity Futures Contracts, Notional Value | | $ 52,746,212 | $ 52,546,725 |
Investments in Securities, Value | [1] | 8,824,518 | 1,010,894 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 8,824,518 | $ 1,010,894 |
Futures [Member] | Long [Member] | ICE FUTURES U.S. Sugar [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 4,594 | 5,329 |
Commodity Futures Contracts, Expiration Date | | Sep. 30, 2021 | Sep. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 72,239,731 | $ 82,842,502 |
Investments in Securities, Value | [1] | 7,253,129 | 7,476,859 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 7,253,129 | $ 7,476,859 |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (NYMEX) Natural Gas [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 2,406 | 3,161 |
Commodity Futures Contracts, Expiration Date | | Apr. 30, 2021 | Apr. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 61,473,300 | $ 69,162,680 |
Investments in Securities, Value | [1] | 1,883,068 | (12,073,446) |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 1,883,068 | $ (12,073,446) |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (NYMEX) NY Harbor ULSD [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 2,825 | 2,184 |
Commodity Futures Contracts, Expiration Date | | May 31, 2021 | May 31, 2020 |
Commodity Futures Contracts, Notional Value | | $ 176,847,825 | $ 180,823,407 |
Investments in Securities, Value | [1] | 28,150,558 | (4,811,899) |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 28,150,558 | $ (4,811,899) |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (NYMEX) RBOB Gasoline [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 3,061 | 2,649 |
Commodity Futures Contracts, Expiration Date | | Nov. 30, 2021 | Nov. 30, 2020 |
Commodity Futures Contracts, Notional Value | | $ 173,083,020 | $ 176,221,546 |
Investments in Securities, Value | [1] | 9,090,619 | 6,030,558 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 9,090,619 | $ 6,030,558 |
Futures [Member] | Long [Member] | CME SWAPS MARKETS (NYMEX) WTI Crude Oil [Member] | | | |
Schedule of Investments [Line Items] | | | |
Commodity Futures Contracts, Number of Contracts | Contract | | 3,641 | 3,000 |
Commodity Futures Contracts, Expiration Date | | Feb. 28, 2021 | Feb. 29, 2020 |
Commodity Futures Contracts, Notional Value | | $ 177,061,830 | $ 182,310,000 |
Investments in Securities, Value | [1] | 6,231,507 | 14,623,700 |
Commodity Futures Contracts, Unrealized Appreciation (Depreciation) | [1] | $ 6,231,507 | $ 14,623,700 |
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[1] | Unrealized Appreciation (Depreciation) and Value are presented above, net by contract. | |