UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 5,300	$ 4,345
Accounts receivable	91,978	97,936
Other current assets	2,812	3,971
Total current assets	100,090	106,252
Property, plant and equipment, net	1,873,929	1,963,713
Intangible assets, net	258,711	273,416
Goodwill	16,211	16,211
Investment in equity method investees	640,226	649,250
Other noncurrent assets	11,423	11,720
Total assets	2,900,590	3,020,562
Current liabilities:
Trade accounts payable	28,324	38,414
Accrued expenses	20,610	21,963
Due to affiliate	320	240
Deferred revenue	11,639	11,467
Ad valorem taxes payable	3,818	10,550
Accrued interest	15,397	12,286
Accrued environmental remediation	2,129	2,487
Other current liabilities	12,858	12,645
Deferred Purchase Price Obligation	100,000
Total current liabilities	195,095	110,052
Long-term debt	1,226,146	1,257,731
Noncurrent Deferred Purchase Price Obligation	288,361	383,934
Noncurrent deferred revenue	41,203	39,504
Noncurrent accrued environmental remediation	3,126	3,149
Other noncurrent liabilities	7,626	4,968
Total liabilities	1,761,557	1,799,338
Commitments and contingencies (Note 16)
Series A Preferred Units (300,000 units issued and outstanding at March 31, 2019 and December 31, 2018)	300,741	293,616
Common limited partner capital (82,695,311 units issued and outstanding at March 31, 2019 and 73,390,853 units issued and outstanding at December 31, 2018)	838,292	902,358
General Partner interests (zero units issued and outstanding at March 31, 2019 and 1,490,999 units issued and outstanding at December 31, 2018)		25,250
Total partners' capital	1,139,033	1,221,224
Total liabilities and partners' capital	$ 2,900,590	$ 3,020,562