Statements of Changes in Partners' Capital (USD $)	Limited Partners [Member]	General Partner [Member]	Total
Balance at Dec. 31, 2010	$ 404,921,242	$ 4,329,618	$ 409,250,860
Balance (in units) at Dec. 31, 2010			10,760,255.711
Statement of change in Partners' Capital [Roll Forward]
Net Loss	(16,659,722)	(181,004)	(16,840,726)
Redemptions (in units)			(315,997.827)
Redemptions	(11,582,655)	(199,983)	(11,782,638)
Balance at Mar. 31, 2011	376,678,865	3,948,631	380,627,496
Balance (in units) at Mar. 31, 2011			10,444,257.884
Balance at Dec. 31, 2011	283,036,281	3,108,127	286,144,408
Balance (in units) at Dec. 31, 2011			9,158,617.900
Statement of change in Partners' Capital [Roll Forward]
Net Loss	(1,297,416)	(16,665)	(1,314,081)
Redemptions (in units)			(504,926.429)
Redemptions	(15,911,073)	0	(15,911,073)
Balance at Mar. 31, 2012	$ 265,827,792	$ 3,091,462	$ 268,919,254
Balance (in units) at Mar. 31, 2012			8,653,691.471