CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 10,300		$ 9,041
Accounts receivable—trade, net	323,462		495,449
Inventories	73,531		88,653
Other	35,986		42,890
Total current assets	443,279		636,033
FIXED ASSETS, at cost	5,440,858		5,601,015
Less: Accumulated depreciation	(1,023,825)		(734,986)
Net fixed assets	4,417,033		4,866,029
MINERALS LEASEHOLDS, net of accumulated depletion	560,481		564,506
NET INVESTMENT IN DIRECT FINANCING LEASES, net of unearned income	116,925		125,283
EQUITY INVESTEES	355,085		381,550
INTANGIBLE ASSETS, net of amortization	162,602		182,406
GOODWILL	301,959		325,046
OTHER ASSETS, net of amortization	121,707		56,628
TOTAL ASSETS	6,479,071		7,137,481
CURRENT LIABILITIES:
Accounts payable—trade	127,327		270,855
Accrued liabilities	205,507		185,409
Total current liabilities	332,834		456,264
SENIOR SECURED CREDIT FACILITY	970,100		1,099,200
SENIOR UNSECURED NOTES, net of debt issuance costs	2,462,363		2,598,918
DEFERRED TAX LIABILITIES	12,576		11,913
OTHER LONG-TERM LIABILITIES	259,198		256,571
Total liabilities	4,037,071		4,422,866
MEZZANINE CAPITAL
Class A Convertible Preferred Units, 24,438,022 and 22,411,728 issued and outstanding at December 31, 2018 and 2017, respectively	761,466		697,151
COMMITMENTS AND CONTINGENCIES (Note 22)
PARTNERS’ CAPITAL:
Common unitholders, 122,579,218 and 122,579,218 units issued and outstanding at December 31, 2018 and 2017, respectively	1,690,799		2,026,147
Accumulated other comprehensive income (loss)	939	[1]	(604)
Noncontrolling interests	(11,204)		(8,079)
Total partners' capital	1,680,534		2,017,464
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	$ 6,479,071		$ 7,137,481

[1] The entire balance and activity within Accumulated Other Comprehensive Income is related to our pension held within our Guarantor Subsidiaries.