STATEMENTS OF FINANCIAL CONDITION (Unaudited) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Trading Equity:
Unrestricted cash	$ 70,147,720	$ 78,094,582
Restricted cash	5,091,538	2,865,033
Total cash	75,239,258	80,959,615
Net unrealized gain on open contracts (MS&Co.)	6,602	2,156,329
Net unrealized gain (loss) on open contracts (MSIP)	(264,093)	288,889
Total net unrealized gain (loss) on open contracts	(257,491)	2,445,218
Options purchased (premiums paid $4,425 and $4,000, respectively)	898	2,775
Total Trading Equity	74,982,665	83,407,608
Interest receivable (MSSB)	645	6,527
Total Assets	74,983,310	83,414,135
Liabilities:
Redemptions payable	607,197	2,102,069
Accrued brokerage fees (MS&Co.)	384,682	399,170
Accrued management fees	96,170	133,056
Options written (premiums received $8,713 and $7,425, respectively)	1,925	5,500
Total Liabilities	1,089,974	2,639,795
Partners' Capital:
Limited Partners (6,057,122.838 and 6,431,165.896 Units, respectively)	73,027,014	79,881,815
General Partner (71,855.857 and 71,855.857 Units, respectively)	866,322	892,525
Total Partners' Capital	73,893,336	80,774,340
Total Liabilities and Partners' Capital	$ 74,983,310	$ 83,414,135
NET ASSET VALUE PER UNIT (in dollars per unit)	$ 12.06	$ 12.42