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Fees and Related Party Transactions (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Advisory Fees [Abstract]        
Advisory fees at annual rate of the Members' Capital     1.50%  
Advisory fees $ 110,261 $ 111,466 $ 314,493 $ 317,862
Sponsor Fees [Abstract]        
Sponsor fees 58,023 58,599 $ 165,889 167,668
Incentive Allocation [Abstract]        
Percentage of incentive allocation     20.00%  
Incentive allocation 238,422 0 $ 315,624 0
Administrator's Fee [Abstract]        
Administrator's fees $ 9,466 $ 9,503 $ 27,083 $ 27,879
Class 0 Units [Member]        
Sponsor Fees [Abstract]        
Sponsor fees at annual rate of the Members' Capital     0.50%  
Class 2 Units [Member]        
Sponsor Fees [Abstract]        
Sponsor fees at annual rate of the Members' Capital     1.25%