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Condensed Statement of Changes in Partners' Capital - USD ($)
Total
General Partner
Limited Partners
Net income (loss) $ 6,464,056    
Net asset value, beginning of period at Dec. 31, 2017 $ 21.05    
Net asset value, end of period at Mar. 31, 2018 $ 22.65    
Beginning Balances at Dec. 31, 2018 $ 50,798,630 $ 0 $ 50,798,630
Redemption of partnership shares (2,237,484) 0 (2,237,484)
Net income (loss) 13,369,839 0 13,369,839
Ending Balances at Mar. 31, 2019 $ 61,930,985 $ 0 $ 61,930,985
Net asset value, beginning of period at Dec. 31, 2018 $ 17.82    
Net asset value, end of period at Mar. 31, 2019 $ 22.52