Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 18, 2020	Dec. 31, 2022	Dec. 31, 2021
Supplemental cash flow information
Cash paid for interest, expensed	$ 813	$ 29,357	$ 1,961	$ 4,227
Cash paid for interest, capitalized	1,261	22,885	4,237	4,585
Cash paid for interest, treated as a reduction of debt	0	46,417	0	0
Cash paid for income taxes	0	453	7,543	184
Cash received from income tax refunds	10,457	1,932	3	3
Noncash investing and financing activities
Increase in asset retirement obligations	23,398	4,328	65,214	112,760
Increase (decrease) in liabilities for capital expenditures	1,867	(12,809)	27,271	35,679
Conversion of convertible senior notes into common stock	$ 0	$ 11,501	$ 0	$ 0