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Statement of Changes in Partners' Capital - USD ($)
General Partner [Member]
Limited Partner [Member]
Total
Balances at Dec. 31, 2016 $ 0 $ 16,445,678 $ 16,445,678
Addition of partnership shares 0 1,021,619 1,021,619
Redemption of partnership shares 0 (5,986,374) (5,986,374)
Net income (loss) 0 (3,146,483) (3,146,483)
Balances at Dec. 31, 2017 0 8,334,440 $ 8,334,440
Net asset value, beginning of year at Dec. 31, 2016     $ 11.75
Net asset value, end of year at Dec. 31, 2017     $ 9.26
Addition of partnership shares 0 584,722 $ 584,722
Redemption of partnership shares 0 (3,843,434) (3,843,434)
Net income (loss) 0 567,143 567,143
Balances at Dec. 31, 2018 0 5,642,871 $ 5,642,871
Net asset value, end of year at Dec. 31, 2018     $ 10.26
Redemption of partnership shares 0 (1,454,651) $ (1,454,651)
Net income (loss) 0 (814,326) (814,326)
Balances at Dec. 31, 2019 $ 0 $ 3,373,894 $ 3,373,894
Net asset value, end of year at Dec. 31, 2019     $ 8.43