Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2017	Dec. 31, 2016
Common
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
Limited partners' interests, Common Units authorized	184,072	184,072
Common Units issued	184,072	184,072
Common Units outstanding	184,072	184,072