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Condensed Statement of Changes in Partners' Capital (USD $) | Total | General Partner [Member] | Limited Partners [Member]
--- | --- | --- | ---
Beginning Balances at Dec. 31, 2012 | $ 99,521,782 | $ 0 | $ 99,521,782
Net asset value, beginning of period at Dec. 31, 2012 | $ 39.81 |  |
Addition of 500,000 partnership units | 20,455,450 | 0 | 20,455,450
Redemption of 500,000 partnership units | (20,639,699) | 0 | (20,639,699)
Net income | 3,240,912 | 0 | 3,240,912
Ending Balances at Mar. 31, 2013 | $ 102,578,445 | $ 0 | $ 102,578,445
Net asset value, end of period at Mar. 31, 2013 | $ 41.03 |  |

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