TRADING ACTIVITIES AND RELATED RISKS, Derivatives by Instrument Type and Location of Instruments on the Statements of Financial Condition (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	$ 5,758,294	$ 8,098,465
Liability derivatives at fair value	(1,487,988)	0
Not Designated as Hedging Instruments [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	18,046,919	21,129,165
Liability derivatives at fair value	(13,776,613)	(13,030,700)
Net	4,270,306	8,098,465
Agriculture Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	383,308	1,930,551
Liability derivatives at fair value	(952,480)	(34,165)
Net	(569,172)	1,896,386
Energy Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	543,659	577,340
Liability derivatives at fair value	(141,142)	(902,016)
Net	402,517	(324,676)
Metal Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	1,188,293	2,645,961
Liability derivatives at fair value	(1,959,318)	(1,905,242)
Net	(771,025)	740,719
Stock Indices Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	1,450,994	727,473
Liability derivatives at fair value	(145,639)	(731,682)
Net	1,305,355	(4,209)
Short-Term Interest Rate Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	2,972,666	1,094,862
Liability derivatives at fair value	(53,796)	(16,160)
Net	2,918,870	1,078,702
Long-Term Interest Rate Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Futures Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	2,954,721	1,313,742
Liability derivatives at fair value	(482,972)	(1,278,601)
Net	2,471,749	35,141
Forward Currency Contracts [Member] | Not Designated as Hedging Instruments [Member] | Net Unrealized Gain (Loss) on Open Forward Currency Contracts [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	8,553,278	12,839,236
Liability derivatives at fair value	(10,041,266)	(8,162,834)
Net	$ (1,487,988)	$ 4,676,402