STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (Unaudited) (USD $)	Limited Partners [Member]	General Partner [Member]	Total
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
Increase/(decrease) in Partners' Capital [Roll Forward]
Net Income (Loss)	(1,297,416)	(16,665)	(1,314,081)
Redemptions	(15,911,073)	0	(15,911,073)
Redemptions (in units)			(504,926.429)
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
Balance at Dec. 31, 2012	193,760,270	2,213,811	195,974,081
Balance (in units) at Dec. 31, 2012			7,059,632.492
Increase/(decrease) in Partners' Capital [Roll Forward]
Net Income (Loss)	4,416,893	46,396	4,463,289
Redemptions	(9,897,356)	(250,012)	(10,147,368)
Redemptions (in units)			(355,658.427)
Balance at Mar. 31, 2013	$ 188,279,807	$ 2,010,195	$ 190,290,002
Balance (in units) at Mar. 31, 2013			6,703,974.065