Statements of Financial Condition (USD $)	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents (Notes 2 and 5)	$ 39,667,209	$ 19,719,092
Equity in UBS Securities LLC trading accounts:
Cash and cash equivalents	4,416,055	10,131,179
Unrealized loss on open commodity futures contracts	(906,580)	(8,583,320)
Receivable from General Partner (Note 3)	68,503	113,169
Dividend receivable	423	195
Interest receivable	0	8
Other assets	321	203
Total assets	43,245,931	21,380,526
Liabilities and Partners' Capital
Investment payable	0	8
Professional fees payable	125,273	151,075
General Partner management fees payable (Note 3)	28,625	14,661
Brokerage commissions payable	4,008	4,260
Other liabilities	2,334	976
Total liabilities	160,240	170,980
Commitments and Contingencies (Notes 3, 4 and 5)	0	0
Partners' Capital
General Partner	0	0
Limited Partners	43,085,691	21,209,546
Total Partners' Capital	43,085,691	21,209,546
Total liabilities and partners' capital	$ 43,245,931	$ 21,380,526
Limited Partners' units outstanding	2,500,000	1,000,000
Net asset value per unit	$ 17.23	$ 21.21
Market value per unit	$ 17.24	$ 21.12