Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Information [Abstract]

Supplemental Cash Flow Information

Supplemental Cash Flow Information

	Successor				Predecessor
	Year Ended Dec. 31, 2021		Period from Sept. 19, 2020 through Dec. 31, 2020		Period from Jan. 1, 2020 through Sept. 18, 2020		Year Ended Dec. 31, 2019
In thousands
Supplemental cash flow information
Cash paid for interest, expensed	$	4,227	$	813	$	29,357	$	72,842
Cash paid for interest, capitalized	4,585		1,261		22,885		36,671
Cash paid for interest, treated as a reduction of debt	—		—		46,417		85,303
Cash paid for income taxes	184		—		453		2,361
Cash received from income tax refunds	3		10,457		1,932		9,820
Noncash investing and financing activities
Increase in asset retirement obligations	112,760		23,398		4,328		13,560
Increase (decrease) in liabilities for capital expenditures	35,679		1,867		(12,809)		(17,740)
Conversion of convertible senior notes into common stock	—		—		11,501		—