v3.8.0.1

CONSOLIDATED BALANCE SHEETS Non-Printing - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Allowance for doubtful accounts | $ 10,344 | $ 9,948
Limited partners common units outstanding (in units) | 93,182,045 | 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

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