CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 367,693	$ 447,766
Short-term investments		28,023	34,036
Accounts receivable, net		737,353	756,320
Inventory, net		178,367	165,587
Assets held for sale		8,004	12,250
Other current assets		147,239	177,604
Total current assets		1,466,679	1,593,563
Property, plant and equipment, net		5,301,252	5,467,870
Goodwill		90,645	183,914
Deferred income taxes		357,267	345,091
Other long-term assets		298,660	263,506
Total assets (1)	[1]	7,514,503	7,853,944
Current liabilities:
Current portion of debt		790	561
Trade accounts payable		410,469	392,843
Accrued liabilities		319,763	417,912
Income taxes payable		27,179	20,761
Current lease liabilities		13,966
Total current liabilities		772,167	832,077
Long-term debt		3,550,577	3,585,884
Other long-term liabilities		294,128	274,485
Deferred income taxes		27,448	6,311
Total liabilities (1)	[1]	4,644,320	4,698,757
Commitments and contingencies (Note 7)
Redeemable noncontrolling interest in subsidiary (Note 3)		415,042	404,861
Shareholders' equity:
Preferred shares, par value $0.001 per share: Series A 6% Cumulative Mandatory Convertible; $50 per share liquidation preference; issued 5,746 and 5,750, respectively		6	6
Common shares, par value $0.001 per share: Authorized common shares 800,000; issued 416,282 and 409,652, respectively		416	410
Capital in excess of par value		3,405,421	3,392,937
Accumulated other comprehensive income (loss)		(13,490)	(29,325)
Retained earnings		303,181	650,842
Less: treasury shares, at cost, 52,800 and 52,800 common shares, respectively		(1,314,020)	(1,314,020)
Total shareholders' equity		2,381,514	2,700,850
Noncontrolling interest		73,627	49,476
Total equity		2,455,141	2,750,326
Total liabilities and equity		$ 7,514,503	$ 7,853,944

[1] The condensed consolidated balance sheet as of June 30, 2019 and December 31, 2018 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.