Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accounts receivable, allowance for doubtful accounts	$ 60	$ 0
Limited Partners' Interest Common Unit-Public
Units issued	6,901,044	6,900,000
Units outstanding	6,901,044	6,900,000
Limited Partners' Interest Common Unit-Affiliates
Units issued	625,000	625,000
Units outstanding	625,000	625,000
Limited Partners' Interest Subordinated Unit-Affiliates
Units issued	7,525,000	7,525,000
Units outstanding	7,525,000	7,525,000