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Organization (Details) - USD ($)
Jun. 30, 2018
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2016
May 17, 2003
Oct. 31, 2001
Limited Member [Member]            
Organization (Details) [Line Items]            
Capital Units, Value           $ 1,000
Limited Partners' Capital Account, Units Outstanding (in Shares) 23,531.79 23,657.21 23,806.08 23,928.48 24,831.283 1,500
Limited Partners' Contributed Capital         $ 24,831,283 $ 1,500,000
Managing Member [Member]            
Organization (Details) [Line Items]            
General Partners' Contributed Capital         $ 1,000