Statements of Financial Condition (USD $)
Dec. 31, 2013
Dec. 31, 2012
Assets    
Cash and cash equivalents (Notes 2 and 5) $ 52,193,157 $ 56,400,613
Equity in trading accounts:    
Cash and cash equivalents 2,053,484 5,170,139
Unrealized gain on open commodity futures contracts 2,598,553 2,608,343
Receivable from General Partner (Note 3) 137,776 139,446
Dividend receivable 628 1,399
Other assets 172,060 219,375
Total assets 57,155,658 64,539,315
Liabilities and Partners' Capital    
Professional fees payable 225,429 275,643
General Partner management fees payable (Note 3) 28,519 32,860
Brokerage commissions payable 1,723 2,348
Other liabilities 2,816 2,976
Total liabilities 258,487 313,827
Commitments and Contingencies (Notes 3, 4 and 5)      
Partners' Capital    
General Partner 0 0
Limited Partners 56,897,171 64,225,488
Total Partners' Capital 56,897,171 64,225,488
Total liabilities and partners' capital $ 57,155,658 $ 64,539,315
Limited Partners' shares outstanding 950,000 1,100,000
Net asset value per share $ 59.89 $ 58.39
Market value per share $ 59.93 $ 58.44