Supplemental Balance Sheet Information - Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Accrued interest	$ 3,903	$ 10,735
Asset retirement obligations	0	2,721
Property and other taxes payable	5,225	5,751
Accrued payroll	3,933	3,110
Operating lease liabilities	8,520	0
Other	2,094	2,063
Total other accrued liabilities	$ 23,675	$ 24,380	[1]

[1] Financial information for 2018 has been revised to include results attributable to MTI acquired from Martin Resource Management Corporation. See Note 1 – Nature of Operations and Basis of Presentation.