Statements of Changes in Partners' Capital (Parenthetical)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Redemptions of Redeemable Units	3,931.9621	4,862.4076	2,871.0299
Net asset value per unit	10,271.31	10,524.14	10,172.06
Limited Partners [Member]
Redemptions of Redeemable Units	3,931.9621	4,862.4076	2,871.0299
General Partner Units [Member]
Redemptions of Redeemable Units	59.5110	24.1950	49.7338
General Partner Units [Member] | General Partner [Member]
Redemptions of Redeemable Units	59.5110	24.1950	49.7338