Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Fair Values of Derivative Instruments
Asset Derivatives	$ 1,643,257	$ 5,103,822
Liability Derivatives	$ (5,729,145)	$ (1,733,649)
Agriculturals | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	6.00%	3.00%
Energy | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	1.00%	3.00%
Interest rates | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	53.00%	46.00%
Interest rates | Deutsche Bank Total Return Swap Terminating July 1, 2020
Fair Values of Derivative Instruments
Sector exposure index	42.00%	39.00%
Metals | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	4.00%	5.00%
Stock indices | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	3.00%	12.00%
Stock indices | Deutsche Bank Total Return Swap Terminating July 1, 2020
Fair Values of Derivative Instruments
Sector exposure index	10.00%	22.00%
Futures Contracts
Fair Values of Derivative Instruments
Asset Derivatives	$ 1,507,844	$ 1,385,860
Liability Derivatives	(532,469)	(984,053)
Fair Value	975,375	401,807
Futures Contracts | Agriculturals
Fair Values of Derivative Instruments
Asset Derivatives	69,794	201,399
Liability Derivatives	(5,448)	(45,915)
Fair Value	64,346	155,484
Futures Contracts | Currencies
Fair Values of Derivative Instruments
Asset Derivatives	121,017	77,837
Liability Derivatives	(3,845)	(71,524)
Fair Value	117,172	6,313
Futures Contracts | Energy
Fair Values of Derivative Instruments
Asset Derivatives	203,381	399,221
Liability Derivatives	(44,744)	(314,480)
Fair Value	158,637	84,741
Futures Contracts | Interest rates
Fair Values of Derivative Instruments
Asset Derivatives	466,955	47,095
Liability Derivatives	(118,585)	(324,965)
Fair Value	348,370	(277,870)
Futures Contracts | Meats
Fair Values of Derivative Instruments
Asset Derivatives	25,317	1,715
Liability Derivatives		(5,030)
Fair Value	25,317	(3,315)
Futures Contracts | Metals
Fair Values of Derivative Instruments
Asset Derivatives	329,602	277,156
Liability Derivatives	(131,144)	(152,572)
Fair Value	198,458	124,584
Futures Contracts | Soft commodities
Fair Values of Derivative Instruments
Asset Derivatives	89,342	56,283
Liability Derivatives	(10,809)	(3,922)
Fair Value	78,533	52,361
Futures Contracts | Stock indices
Fair Values of Derivative Instruments
Asset Derivatives	202,436	325,154
Liability Derivatives	(217,894)	(65,645)
Fair Value	(15,458)	259,509
Forward Contracts
Fair Values of Derivative Instruments
Fair Value	10,353	(69,073)
Forward Contracts | Currencies
Fair Values of Derivative Instruments
Asset Derivatives	135,413	67,730
Liability Derivatives	(125,060)	(136,803)
Fair Value	$ 10,353	$ (69,073)
Forward Contracts | Currencies | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	33.00%	31.00%
Forward Contracts | Currencies | Deutsche Bank Total Return Swap Terminating July 1, 2020
Fair Values of Derivative Instruments
Sector exposure index	48.00%	39.00%
Swap Contracts
Fair Values of Derivative Instruments
Asset Derivatives		$ 3,650,232
Liability Derivatives	$ (5,071,616)	(612,793)
Fair Value	$ (5,071,616)	$ 3,037,439
Swap Contracts | Deutsche Bank Total Return Swap Terminating April 30, 2024
Fair Values of Derivative Instruments
Sector exposure index	100.00%	100.00%
Swap Contracts | Deutsche Bank Total Return Swap Terminating July 1, 2020
Fair Values of Derivative Instruments
Sector exposure index	100.00%	100.00%