TRADING ACTIVITIES AND RELATED RISKS, Offsetting of Derivative Assets and Collateral Received by Counterparty (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	$ 21,129,165	$ 19,683,612
Gross amounts offset in the Statements of Financial Condition	(13,030,700)	(13,794,856)
Net amounts of unrealized gain presented in the Statements of Financial Condition	8,098,465	5,888,756
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	8,098,465	5,888,756
Gross amounts not offset in the Statements of Financial Condition - Financial instruments	0	0
Gross amounts not offset in the Statements of Financial Condition - Cash collateral received	0	0
Net amount	8,098,465	5,888,756
Futures Contracts [Member] | Exchange-Traded [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	8,289,929	11,143,617
Gross amounts offset in the Statements of Financial Condition	(4,867,866)	(6,806,374)
Net amounts of unrealized gain presented in the Statements of Financial Condition	3,422,063	4,337,243
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	3,422,063	4,337,243
Futures Contracts [Member] | UBS Securities LLC [Member] | Exchange-Traded [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	4,153,364	5,564,291
Gross amounts offset in the Statements of Financial Condition	(2,429,240)	(3,407,630)
Net amounts of unrealized gain presented in the Statements of Financial Condition	1,724,124	2,156,661
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	1,724,124	2,156,661
Gross amounts not offset in the Statements of Financial Condition - Financial instruments	0	0
Gross amounts not offset in the Statements of Financial Condition - Cash collateral received	0	0
Net amount	1,724,124	2,156,661
Futures Contracts [Member] | Goldman Sachs [Member] | Exchange-Traded [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	4,136,565	5,579,326
Gross amounts offset in the Statements of Financial Condition	(2,438,626)	(3,398,744)
Net amounts of unrealized gain presented in the Statements of Financial Condition	1,697,939	2,180,582
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	1,697,939	2,180,582
Gross amounts not offset in the Statements of Financial Condition - Financial instruments	0	0
Gross amounts not offset in the Statements of Financial Condition - Cash collateral received	0	0
Net amount	1,697,939	2,180,582
Forward Currency Contracts [Member] | Over-the-Counter [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	12,839,236	8,539,995
Gross amounts offset in the Statements of Financial Condition	(8,162,834)	(6,988,482)
Net amounts of unrealized gain presented in the Statements of Financial Condition	4,676,402	1,551,513
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	4,676,402	1,551,513
Forward Currency Contracts [Member] | UBS AG [Member] | Over-the-Counter [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	6,419,618	4,269,997
Gross amounts offset in the Statements of Financial Condition	(4,081,417)	(3,494,241)
Net amounts of unrealized gain presented in the Statements of Financial Condition	2,338,201	775,756
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	2,338,201	775,756
Gross amounts not offset in the Statements of Financial Condition - Financial instruments	0	0
Gross amounts not offset in the Statements of Financial Condition - Cash collateral received	0	0
Net amount	2,338,201	775,756
Forward Currency Contracts [Member] | NatWest Markets PLC [Member] | Over-the-Counter [Member]
Offsetting of Derivative Assets by Counterparty [Abstract]
Gross amounts of recognized assets	6,419,618	4,269,998
Gross amounts offset in the Statements of Financial Condition	(4,081,417)	(3,494,241)
Net amounts of unrealized gain presented in the Statements of Financial Condition	2,338,201	775,757
Derivative Assets and Collateral Received by Counterparty [Abstract]
Net amounts of unrealized gain in the Statements of Financial Condition	2,338,201	775,757
Gross amounts not offset in the Statements of Financial Condition - Financial instruments	0	0
Gross amounts not offset in the Statements of Financial Condition - Cash collateral received	0	0
Net amount	$ 2,338,201	$ 775,757