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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ 1,266,173    
Net asset value, beginning of period at Dec. 31, 2015 $ 9.72    
Net asset value, end of period at Jun. 30, 2016 $ 10.64    
Balances at Dec. 31, 2016 $ 16,445,678 $ 0 $ 16,445,678
Addition of 50,000 partnership shares 543,667 0 543,667
Redemption of 500,000 partnership shares (4,996,389) 0 (4,996,389)
Net income (loss) (2,470,405) 0 (2,470,405)
Balances at Jun. 30, 2017 $ 9,522,551 $ 0 $ 9,522,551
Net asset value, beginning of period at Dec. 31, 2016 $ 11.75    
Net asset value, end of period at Jun. 30, 2017 $ 10.02