Consolidated Statements of Cash Flows - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Apr. 23, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net loss	$ (1,961,989)	$ (177,344)	$ (103,211)		$ (1,254,904)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	92,758	68,504	103,478		320,085
Loss on impairment of assets	197,027	132,449	0		842,016
Reorganization items, net	1,587,392				22,106
(Gain) loss on disposition of assets	(5,486)	(1,024)	(4,895)		(7,375)
Deferred tax provision	(35,894)	(3,482)	479		(19,228)
Stock-based compensation expense		10,766	20,159		5,637
Contract liabilities, net	10,617	48,293	(36,292)		8,823
Contract assets, net	(742)	(1,418)	1,694		3,444
Deferred contract costs, net	(12,034)	(13,081)	(1,594)		1,960
Long-term employee remuneration programs	475	119	62		(4,256)
Collateral deposits		6,030	17,479		(18,262)
Other assets, noncurrent	2,685	361	(2,950)		(7,950)
Other liabilities, noncurrent	(371)	(2,092)	115		(2,279)
Other	2,683	1,579	2,194		3,321
Changes in operating assets and liabilities:
Accounts receivable	2,108	(16,984)	(25,718)		114,329
Prepaid expenses and other current assets	(2,791)	305	2,028		6,334
Accounts payable and accrued liabilities	29,302	(40,133)	55,006		(14,143)
Taxes payable	(5,804)	6,056	(19,170)		8,721
Net cash provided by (used in) operating activities	(100,064)	18,904	8,864		8,379
Investing activities:
Capital expenditures	(49,119)	(42,812)	(60,023)		(189,528)
Proceeds from disposition of assets, net of disposal costs	7,484	1,053	5,959		13,333
Deposits on asset sales			1,670
Proceeds from sale of foreign bonds					5,915
Net cash used in investing activities	(41,635)	(41,759)	(52,394)		(170,280)
Financing activities:
(Repayments of) borrowings under revolving credit facility	(442,034)				436,000
Borrowings on exit facilities	200,000	50,000	94,000
Repayments on exit facilities		(70,000)
Issuance of exit notes	75,000
Debt issuance costs and arrangement fees	(6,218)
Principal payments of finance lease liabilities		(9,845)	(15,865)
Net cash provided by (used in) financing activities	(173,252)	(29,845)	78,135		436,000
Net change in cash, cash equivalents and restricted cash	(314,951)	(52,700)	34,605		274,099
Cash, cash equivalents and restricted cash, beginning of period	430,380	115,429	62,729	$ 430,380	156,281
Cash, cash equivalents and restricted cash, end of period	$ 115,429	$ 62,729	$ 97,334	$ 62,729	$ 430,380