Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 205,748,000	$ 188,006,000
Accounts receivable, net of allowance for doubtful accounts of $0 and $24,629 at June 30, 2021 and December 31, 2020, respectively	171,480,000	158,516,000
Income taxes receivable		8,891,000
Prepaid expenses	34,540,000	31,793,000
Inventory	86,064,000	77,027,000
Other current assets	7,762,000	9,171,000
Assets held for sale	170,194,000	242,104,000
Total current assets	675,788,000	715,508,000
Property, plant and equipment, net	455,079,000	408,107,000
Operating lease right-of-use assets	30,755,000	33,317,000
Goodwill		138,677,000
Notes receivable	74,370,000	72,129,000
Restricted cash	80,159,000	80,179,000
Intangible and other long-term assets, net	24,436,000	53,162,000
Total assets	1,340,587,000	1,501,079,000
Current liabilities:
Accounts payable	60,735,000	50,330,000
Accrued expenses	115,069,000	114,777,000
Income taxes payable	4,829,000
Liabilities held for sale	35,730,000	46,376,000
Total current liabilities	216,363,000	211,483,000
Decommissioning liabilities	171,744,000	134,436,000
Operating lease liabilities	21,353,000	29,464,000
Deferred income taxes	43,227,000	5,288,000
Other long-term liabilities	72,758,000	123,261,000
Total non-current liabilities	309,082,000	292,449,000
Liabilities subject to compromise		1,335,794,000
Total liabilities	525,445,000	1,839,726,000
Stockholders’ equity (deficit):
Common stock		16,000
Predecessor Treasury stock at cost, 972,412 shares at December 31, 2020		(4,290,000)
Accumulated other comprehensive loss, net		(67,947,000)
Accumulated deficit	(87,629,000)	(3,023,315,000)
Total stockholders’ equity (deficit)	815,142,000	(338,647,000)
Total liabilities and stockholders’ equity (deficit)	1,340,587,000	1,501,079,000
Common Class A [Member]
Stockholders’ equity (deficit):
Common stock	200,000
Additional paid-in capital	902,486,000	$ 2,756,889,000
Common Class B [Member]
Stockholders’ equity (deficit):
Common stock	1,000
Additional paid-in capital	$ 84,000