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CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Jun. 30, 2017
Dec. 31, 2016
Common Units    
Limited Partners' interests, common units authorized 18,501,576 18,501,576
Common units issued 18,501,576 18,501,576
Common units outstanding 18,501,576 18,501,576
Class B Common Units    
Limited Partners' interests, common units authorized 184,072 184,072
Common units issued 184,072 184,072
Common units outstanding 184,072 184,072