CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Sep. 30, 2016	Dec. 31, 2015
CONSOLIDATED BALANCE SHEETS
Common unitholders, units issued	33,995,563	33,995,563
Common unitholders, units outstanding	33,533,402	33,506,844
General partner interest (as a percent)	0.67%	0.67%
General partner interest, equivalent units outstanding	230,303	230,303