CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Limited partner interest, units outstanding	33,995,563
General partner interest (as a percent)	0.67%	0.67%
General partner interest, equivalent units outstanding	230,303	230,303
Accounts receivable, allowance (in dollars)	$ 2,729	$ 2,433
Series A Preferred Limited Partners
Limited partner interest, units issued	2,760,000	0
Common Limited Partners
Limited partner interest, units issued	33,995,563	33,995,563
Limited partner interest, units outstanding	33,867,393	33,751,435