Consolidated Balance Sheets (Parenthetical)	Dec. 31, 2011	Dec. 31, 2010
Common
Limited partners' interests, Common Units authorized	18,501,576	18,501,576
Limited partners' interests, Common Units issued	18,501,576	18,501,576
Limited partners' interests, Common Units outstanding	18,501,576	18,501,576
Class B Common
Limited partners' interests, Common Units authorized	184,072	184,072
Limited partners' interests, Common Units issued	184,072	184,072
Limited partners' interests, Common Units outstanding	184,072	184,072