Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	1 Months Ended	5 Months Ended	6 Months Ended
	Feb. 02, 2021	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 268,777	$ (87,629)	$ (144,570)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion, amortization and accretion	10,498	130,404	78,141
Deferred income taxes	54,322	(16,295)	(716)
Reduction in value of assets			16,522
Reduction in value of assets held for sale	(2,654)	12,430	49,361
Right-of-use assets amortization	1,372	6,309	9,943
Stock-based compensation expense, net		1,570	7,293
Reorganization items, net	(354,279)
Retirement and deferred compensation plan expense, net	260	(1,885)
Bad debt	(210)	(5,433)
Gain on sale of assets and businesses	58	(4,513)
Other reconciling items, net	(307)	(1,886)	(1,906)
Changes in operating assets and liabilities:
Accounts receivable	3,602	(12,518)	88,182
Prepaid expenses	(340)	(2,910)	(8)
Inventory and other current assets	(221)	7,314	5,668
Accounts payable	(2,365)	9,619	(27,250)
Accrued expenses	24,425	(25,604)	(38,137)
Income taxes	340	13,805	(31,677)
Operating lease liabilities and other, net	2,105	(10,275)	(11,419)
Net cash provided by (used in) operating activities	5,383	12,503	(573)
Cash flows from investing activities:
Payments for capital expenditures	(3,035)	(10,995)	(30,518)
Proceeds from sales of assets	775	16,200	39,445
Net cash provided by (used in) investing activities	(2,260)	5,205	8,927
Cash flows from financing activities:
Credit facility costs	(1,920)	(14)
Tax withholdings for vested restricted stock units		(1,485)	(208)
Net cash used in financing activities	(1,920)	(1,499)	(208)
Effect of exchange rate changes on cash	311		(2,351)
Net change in cash, cash equivalents, and restricted cash	1,514	16,209	5,795
Cash, cash equivalents, and restricted cash at beginning of period	268,184	269,698	275,388
Cash, cash equivalents, and restricted cash at end of period	$ 269,698	$ 285,907	$ 281,183