CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents		$ 469,438	$ 451,025
Short-term investments		6,294	1,290
Accounts receivable, net of allowance of $52,550 and $52,895, respectively		307,005	327,397
Inventory, net		144,223	127,947
Other current assets		86,283	92,964
Total current assets		1,013,243	1,000,623
Property, plant and equipment, net		2,976,831	3,026,100
Restricted cash held in trust		290,472	284,841
Deferred income taxes		251,761	257,320
Other long-term assets		167,669	160,970
Total assets	[1]	4,699,976	4,729,854
Current liabilities:
Trade accounts payable		306,543	314,041
Accrued liabilities		190,039	247,575
Income taxes payable		37,857	27,990
Current lease liabilities		6,039	6,784
Total current liabilities		540,478	596,390
Long-term debt		2,562,327	2,537,540
Other long-term liabilities		321,114	377,671
Deferred income taxes		2,580	2,858
Total liabilities	[1]	3,426,499	3,514,459
Commitments and contingencies (Note 8)
Redeemable noncontrolling interest in subsidiary		691,095	678,604
Shareholders' equity:
Common shares, par value $0.05 per share: Authorized common shares 32,000; issued 10,630 and 10,505, respectively		531	525
Capital in excess of par value		3,533,240	3,536,373
Accumulated other comprehensive income (loss)		(10,940)	(11,038)
Retained earnings (accumulated deficit)		(1,804,369)	(1,841,153)
Less: treasury shares, at cost, 1,090 and 1,090 common shares, respectively		(1,315,751)	(1,315,751)
Total shareholders' equity		402,711	368,956
Noncontrolling interest		179,671	167,835
Total equity		582,382	536,791
Total liabilities and equity		$ 4,699,976	$ 4,729,854

[1] The condensed consolidated balance sheet as of March 31, 2023 and December 31, 2022 include assets and liabilities of variable interest entities. See Note 3—Joint Ventures for additional information.