CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 991,471	$ 472,246
Short-term investments	17	9,500
Accounts receivable, net of allowance of $67,292 and $69,807, respectively	287,572	362,977
Inventory, net	126,448	160,585
Assets held for sale	16,561	16,562
Other current assets	95,740	109,595
Total current assets	1,517,809	1,131,465
Property, plant and equipment, net	3,332,498	3,985,707
Restricted cash held in trust	281,523
Deferred income taxes	258,631	247,171
Other long-term assets	134,903	139,085
Total assets (1)	5,525,364	5,503,428
Current liabilities:
Trade accounts payable	253,748	220,922
Accrued liabilities	247,171	276,085
Income taxes payable	18,887	10,157
Current lease liabilities	5,422	8,305
Total current liabilities	525,228	515,469
Long-term debt	3,262,795	2,968,701
Other long-term liabilities	340,347	318,034
Deferred income taxes	2,773	1,576
Total liabilities (1)	4,131,143	3,803,780
Commitments and contingencies (Note 15)
Redeemable noncontrolling interest in subsidiary	675,283	442,840
Shareholders' equity:
Preferred shares, par value $0.001 per share: Series A 6% Cumulative Mandatory Convertible; $50 per share liquidation preference; outstanding 0 and 4,870, respectively		5
Common shares, par value $0.05 per share: Authorized common shares 32,000; issued 9,295 and 8,383, respectively	466	419
Capital in excess of par value	3,454,563	3,423,935
Accumulated other comprehensive income (loss)	(10,634)	(11,124)
Retained earnings (accumulated deficit)	(1,537,988)	(946,100)
Less: treasury shares, at cost, 1,090 and 1,090 common shares, respectively	(1,315,751)	(1,315,751)
Total shareholders' equity	590,656	1,151,384
Noncontrolling interest	128,282	105,424
Total equity	718,938	1,256,808
Total liabilities and equity	$ 5,525,364	$ 5,503,428