v3.10.0.1
CONSOLIDATED BALANCE SHEETS Non-Printing - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Allowance for doubtful accounts $ 9,499 $ 9,948
Series D preferred units outstanding 23,246,650 0
Limited partners common units outstanding (in units) 107,043,594 93,176,683
Series A Preferred Limited Partner [Member]    
Preferred units outstanding 9,060,000 9,060,000
Series B Preferred Limited Partner [Member]    
Preferred units outstanding 15,400,000 15,400,000
Series C Preferred Limited Partner [Member]    
Preferred units outstanding 6,900,000 6,900,000