STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (Unaudited) (USD $)	Total	Limited Partners [Member]	General Partner [Member]
Partner's Capital at Dec. 31, 2010	$ 409,250,860	$ 404,921,242	$ 4,329,618
Partner's Capital (in units) at Dec. 31, 2010	10,760,255.711
Increase (decrease) in Partners' Capital [Roll Forward]
Net Loss	(41,156,688)	(40,722,391)	(434,297)
Redemptions	(29,712,322)	(29,312,344)	(399,978)
Redemptions (in units)	(815,247.904)
Partner's Capital at Jun. 30, 2011	338,381,850	334,886,507	3,495,343
Partner's Capital (in units) at Jun. 30, 2011	9,945,007.807
Partner's Capital at Dec. 31, 2011	286,144,408	283,036,281	3,108,127
Partner's Capital (in units) at Dec. 31, 2011	9,158,617.900
Increase (decrease) in Partners' Capital [Roll Forward]
Net Loss	(3,877,252)	(3,827,262)	(49,990)
Redemptions	(34,215,020)	(33,915,028)	(299,992)
Redemptions (in units)	(1,089,453.401)
Partner's Capital at Jun. 30, 2012	$ 248,052,136	$ 245,293,991	$ 2,758,145
Partner's Capital (in units) at Jun. 30, 2012	8,069,164.499