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Statement of Changes in Partners' Capital (Parenthetical) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Addition of partnership share 550,000 50,000  
Redemption of partnership shares 0 150,000 400,000
Partners Capital $ 7,351,460 $ 3,373,894  
General Partner [Member]      
Partners' shares outstanding 0 0 0
Partners Capital $ 0 $ 0 $ 0