UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 8,212	$ 1,430
Accounts receivable	80,166	72,301
Other current assets	2,594	4,327
Total current assets	90,972	78,058
Property, plant and equipment, net	1,887,759	1,795,129
Intangible assets, net	286,665	301,345
Goodwill	16,211	16,211
Investment in equity method investees	670,827	690,485
Other noncurrent assets	13,144	13,565
Total assets	2,965,578	2,894,793
Current liabilities:
Trade accounts payable	21,698	16,375
Accrued expenses	19,433	12,499
Due to affiliate	91	1,088
Deferred revenue	10,778	4,000
Ad valorem taxes payable	6,504	8,329
Accrued interest	12,259	12,310
Accrued environmental remediation	3,522	3,130
Other current liabilities	7,412	11,258
Total current liabilities	81,697	68,989
Long-term debt	1,147,005	1,051,192
Deferred Purchase Price Obligation	453,922	362,959
Noncurrent deferred revenue	38,119	12,707
Noncurrent accrued environmental remediation	1,617	2,214
Other noncurrent liabilities	6,410	7,063
Total liabilities	1,728,770	1,505,124
Commitments and contingencies (Note 16)
Series A Preferred Units (300,000 units issued and outstanding at June 30, 2018 and December 31, 2017)	293,616	294,426
Common limited partner capital (73,355,775 units issued and outstanding at June 30, 2018 and 73,085,996 units issued and outstanding at December 31, 2017)	907,099	1,056,510
General Partner interests (1,490,999 units issued and outstanding at June 30, 2018 and December 31, 2017)	25,137	27,920
Noncontrolling interest	10,956	10,813
Total partners' capital	1,236,808	1,389,669
Total liabilities and partners' capital	$ 2,965,578	$ 2,894,793