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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partner [Member]
Net income (loss) $ (19,958,712)    
Net asset value, beginning of period at Dec. 31, 2014 $ 22.39    
Net asset value, end of period at Sep. 30, 2015 $ 16.56    
Balances at Dec. 31, 2015 $ 82,492,110 $ 0 $ 82,492,110
Addition of partnership shares 31,775,859 0 31,775,859
Redemption of partnership shares (24,486,264) 0 (24,486,264)
Net income (loss) 27,633,527 0 27,633,527
Balances at Sep. 30, 2016 $ 117,415,232 $ 0 $ 117,415,232
Net asset value, beginning of period at Dec. 31, 2015 $ 12.22    
Net asset value, end of period at Sep. 30, 2016 $ 14.59