TRADING ACTIVITIES AND RELATED RISKS, Derivatives by Instrument Type and Location of Instruments on the Statements of Financial Condition (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	$ 8,098,465	$ 5,888,756
Liability derivatives at fair value	0	0
Not Designated as Hedging Instruments [Member]
Derivatives at Fair Value, Net [Abstract]
Asset derivatives at fair value	21,129,165	19,683,612
Liability derivatives at fair value	(13,030,700)	(13,794,856)
Net	8,098,465	5,888,756
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	1,930,551	1,818,426
Liability derivatives at fair value	(34,165)	(149,358)
Net	1,896,386	1,669,068
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	577,340	2,109,057
Liability derivatives at fair value	(902,016)	(1,007,528)
Net	(324,676)	1,101,529
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	2,645,961	3,286,448
Liability derivatives at fair value	(1,905,242)	(1,313,045)
Net	740,719	1,973,403
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	727,473	3,234,375
Liability derivatives at fair value	(731,682)	(1,296,601)
Net	(4,209)	1,937,774
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	1,094,862	262,561
Liability derivatives at fair value	(16,160)	(245,676)
Net	1,078,702	16,885
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	1,313,742	432,750
Liability derivatives at fair value	(1,278,601)	(2,794,166)
Net	35,141	(2,361,416)
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	12,839,236	8,539,995
Liability derivatives at fair value	(8,162,834)	(6,988,482)
Net	$ 4,676,402	$ 1,551,513