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Organization (Details) - USD ($)
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Dec. 31, 2016
Oct. 19, 2007
Apr. 03, 2006
Limited Member [Member]            
Organization (Details) [Line Items]            
Capital Units, Value           $ 10
Limited Partners' Capital Account, Units Outstanding (in Shares) 1,738,006.0 1,738,006.0 1,744,006.0 1,744,006.0 1,832,736 150,000
Limited Partners' Contributed Capital         $ 18,327,360 $ 1,500,000
Managing Member [Member]            
Organization (Details) [Line Items]            
General Partners' Contributed Capital         $ 1,000