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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner [Member]
Limited Partners [Member]
Net income (loss) $ (2,470,405)    
Net asset value, beginning of period at Dec. 31, 2016 $ 11.75    
Net asset value, end of period at Jun. 30, 2017 $ 10.02    
Balances at Dec. 31, 2017 $ 8,334,440 $ 0 $ 8,334,440
Redemption of 250,000 partnership shares (2,343,741) 0 (2,343,741)
Net income (loss) 180,954 0 180,954
Balances at Jun. 30, 2018 $ 6,171,653 $ 0 $ 6,171,653
Net asset value, beginning of period at Dec. 31, 2017 $ 9.26    
Net asset value, end of period at Jun. 30, 2018 $ 9.49