STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (Unaudited) (USD $)	Total	Limited [Member]	General [Member]
Partners' Capital beginning balance at Dec. 31, 2009	$ 399,908,477	$ 395,815,421	$ 4,093,056
Partners' Capital beginning balance (in units) at Dec. 31, 2009	13,841,108.731
Subscriptions	2,026,779	2,026,779	0
Subscriptions (in units)	73,727.879
Net Loss	(19,970,494)	(19,765,804)	(204,690)
Redemptions	(38,119,456)	(37,717,788)	(401,668)
Redemptions (in units)	(1,404,615.854)
Partners' Capital ending balance at Sep. 30, 2010	343,845,306	340,358,608	3,486,698
Partners' Capital ending balance (in units) at Sep. 30, 2010	12,510,220.756
Partners' Capital beginning balance at Dec. 31, 2010	361,601,794	357,913,170	3,688,624
Partners' Capital beginning balance (in units) at Dec. 31, 2010	12,523,668.457
Subscriptions	44,563,039	44,263,039	300,000
Subscriptions (in units)	1,597,401.690
Net Loss	(54,427,087)	(53,863,785)	(563,302)
Redemptions	(30,392,782)	(30,392,782)	0
Redemptions (in units)	(1,113,091.117)
Partners' Capital ending balance at Sep. 30, 2011	$ 321,344,964	$ 317,919,642	$ 3,425,322
Partners' Capital ending balance (in units) at Sep. 30, 2011	13,007,979.030