Statements of Changes in Partners' Capital - USD ($)	Total	Limited Partners [Member]	General Partner [Member]	Class A Redeemable Units [Member]	Class A Redeemable Units [Member] Limited Partners [Member]	Class Z Redeemable Units [Member]	Class Z Redeemable Units [Member] Limited Partners [Member]	Class Z Redeemable Units [Member] General Partner [Member]
Net asset value per unit				$ 3,004.84		$ 1,133.48
Partners' Capital, beginning of period at Dec. 31, 2015	$ 1,090,699,381			$ 1,075,725,600		$ 14,973,781
Subscriptions		$ 88,000,830			$ 87,337,421		$ 663,409
Redemptions		$ (173,743,088)	$ (1,039,843)		$ (173,180,117)		$ (562,971)	$ (1,039,843)
Net income (loss)	(6,003,529)			(6,127,946)		124,417
Partners' Capital, end of period at Dec. 31, 2016	$ 997,913,751			$ 983,754,958		$ 14,158,793
Partners' Capital, beginning of period at Dec. 31, 2015	371,208.4063			357,997.9468		13,210.4595
Subscriptions - Redemptions Units		29,321.5150			28,744.7430		576.7720
Partners' Capital, end of period at Dec. 31, 2016	342,247.1463			329,826.9338		12,420.2125
Redemptions - Redeemable Units		(57,410.5730)	(872.2020)		(56,915.7560)		(494.8170)	(872.2020)
Net asset value per unit				$ 2,982.64		$ 1,139.98
Subscriptions		$ 34,917,405			$ 33,736,567		$ 1,180,838
Redemptions		$ (199,782,666)	$ (1,274,988)		$ (198,980,126)		$ (802,540)	$ (1,274,988)
Net income (loss)	$ (33,240,575)			$ (32,973,626)		$ (266,949)
Partners' Capital, end of period at Dec. 31, 2017	$ 798,532,927			$ 785,537,773		$ 12,995,154
Subscriptions - Redemptions Units		12,757.7100			11,683.0890		1,074.6210
Partners' Capital, end of period at Dec. 31, 2017	283,624.9493			272,051.1558		11,573.7935
Redemptions - Redeemable Units		(70,201.7950)	(1,178.1120)		(69,458.8670)		(742.9280)	(1,178.1120)
Net asset value per unit				$ 2,887.46		$ 1,122.81
Subscriptions		$ 31,006,582			$ 29,451,751		$ 1,554,831
Redemptions		$ (150,634,605)	$ (2,300,010)		$ (150,354,149)		$ (280,456)	$ (2,300,010)
Net income (loss)	$ (70,546,419)			$ (69,603,950)		$ (942,469)
Partners' Capital, end of period at Dec. 31, 2018	$ 606,058,475			$ 595,031,425		$ 11,027,050
Subscriptions - Redemptions Units		11,892.8620			10,485.7950		1,407.0670
Partners' Capital, end of period at Dec. 31, 2018	238,810.0823			228,146.2478		10,663.8345
Redemptions - Redeemable Units		(54,651.0220)	(2,056.7070)		(54,390.7030)		(260.3190)	(2,056.7070)
Net asset value per unit				$ 2,608.11		$ 1,034.06