STATEMENTS OF FINANCIAL CONDITION (Unaudited) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Trading Equity:
Unrestricted cash	$ 72,354,987	$ 78,094,582
Restricted cash	3,154,435	2,865,033
Total cash	75,509,422	80,959,615
Net unrealized gain on open contracts (MS&Co.)	458,939	2,156,329
Net unrealized gain on open contracts (MSIP)	206,955	288,889
Total net unrealized gain on open contracts	665,894	2,445,218
Options purchased (premiums paid $6,665 and $4,000, respectively)	13,725	2,775
Total Trading Equity	76,189,041	83,407,608
Interest receivable (MSSB)	1,398	6,527
Total Assets	76,190,439	83,414,135
Liabilities:
Redemptions payable	477,263	2,102,069
Accrued brokerage fees (MS&Co.)	379,401	399,170
Accrued management fees	94,850	133,056
Options written (premiums received $12,490 and $7,425, respectively)	25,880	5,500
Total Liabilities	977,394	2,639,795
Partners' Capital:
Limited Partners (5,803,955.443 and 6,431,165.896 Units, respectively)	74,293,257	79,881,815
General Partner (71,855.857 and 71,855.857 Units, respectively)	919,788	892,525
Total Partners' Capital	75,213,045	80,774,340
Total Liabilities and Partners' Capital	$ 76,190,439	$ 83,414,135
NET ASSET VALUE PER UNIT (in dollars per share)	$ 12.80	$ 12.42