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Condensed Statements of Operations (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Gain (loss) on trading of commodity futures contracts: |  |
Realized gain on closed positions | $ 1,440,840 | $ 6,361,470
Change in unrealized gain (loss) on open positions | (662,270) | 1,154,200
Dividend income | 2,259 | 1,263
Interest income | 995 | 2,249
Other income | 4,900 | 4,550
Total income | 786,724 | 7,523,732
Expenses |  |
General Partner management fees (Note 3) | 80,291 | 105,515
Professional fees | 30,882 | 29,056
Brokerage commissions | 8,402 | 9,947
Other expenses | 2,284 | 2,144
Total expenses | 121,859 | 146,662
Expense waiver (Note 3) | (14,868) | (8,066)
Net expenses | 106,991 | 138,596
Net income | $ 679,733 | $ 7,385,136
Net income per limited partnership unit | 1.31 | 11.76
Net income per weighted average limited partnership unit | 1.32 | 10.86
Weighted average limited partnership units outstanding | 516,111 | 680,220

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