XML 21 R6.htm IDEA: XBRL DOCUMENT v3.19.2
Condensed Statement of Changes in Partners' Capital - USD ($)
General Partner [Member]
Limited Partner [Member]
Total
Net asset value, beginning of year at Dec. 31, 2017     $ 18.18
Net income (loss)     $ 18,857,204
Net asset value, end of year at Jun. 30, 2018     $ 22.21
Beginning Balances at Dec. 31, 2018 $ 0 $ 73,624,628 $ 73,624,628
Net asset value, beginning of year at Dec. 31, 2018     $ 15.18
Addition of partnership shares 0 11,705,130 $ 11,705,130
Redemption of partnership shares 0 (13,425,987) (13,425,987)
Net income (loss) 0 19,932,422 19,932,422
Ending Balances at Jun. 30, 2019 $ 0 $ 91,836,193 $ 91,836,193
Net asset value, end of year at Jun. 30, 2019     $ 19.13