Consolidated Balance Sheets (Parenthetical) - shares	Sep. 30, 2016	Dec. 31, 2015
General partners' units outstanding (in shares)	461,136	461,136
Common Units
Limited partners' units outstanding (in shares)	14,181,996	11,947,127
Class A Units
Limited partners' units outstanding (in shares)	138,750	185,000
Subordinated Units
Limited partners' units outstanding (in shares)	8,370,836	10,463,545