Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Stock ($.001 Par Value)	Paid-In Capital in Excess of Par	Retained Earnings (Accumulated Deficit)	Treasury Stock (at cost)
Beginning balance, shares at Dec. 31, 2017		402,549,346			457,041
Beginning balance at Dec. 31, 2017	$ 648,165,000	$ 403,000	$ 2,507,828,000	$ (1,855,810,000)	$ (4,256,000)
Issued pursuant to stock compensation plans, shares		4,556,424
Issued pursuant to stock compensation plans, value		$ 4,000	(4,000)
Issued pursuant to notes conversion, shares		55,249,955
Issued pursuant to notes conversion, value	162,004,000	$ 55,000	161,949,000
Stock-based compensation, value	15,438,000		15,438,000
Tax withholding for stock compensation plans, shares					1,484,708
Tax withholding for stock compensation plans, value	(6,528,000)				$ (6,528,000)
Net income (loss)	322,698,000			322,698,000
Ending balance, shares at Dec. 31, 2018		462,355,725			1,941,749
Ending balance at Dec. 31, 2018	1,141,777,000	$ 462,000	2,685,211,000	(1,533,112,000)	$ (10,784,000)
Issued pursuant to stock compensation plans, shares		9,315,016
Issued pursuant to stock compensation plans, value		$ 9,000	(9,000)
Issued pursuant to notes conversion, value	0
Stock-based compensation, value	16,488,000		16,488,000
Issued pursuant to directors' compensation plan, shares		97,537
Issuance of new shares, shares		36,297,217			(1,990,000)
Issuance of new shares, value	39,555,000	$ 37,000	37,409,000	(5,161,000)	$ 7,270,000
Tax withholding for stock compensation plans, shares					1,701,022
Tax withholding for stock compensation plans, value	(2,520,000)				$ (2,520,000)
Net income (loss)	$ 216,959,000			216,959,000
Ending balance, shares at Dec. 31, 2019	508,065,495	508,065,495			1,652,771
Ending balance at Dec. 31, 2019	$ 1,412,259,000	$ 508,000	2,739,099,000	(1,321,314,000)	$ (6,034,000)
Issued pursuant to stock compensation plans, shares		312,516
Issued pursuant to notes conversion, shares		7,372,250
Issued pursuant to notes conversion, value	11,501,000	$ 8,000	11,493,000
Stock-based compensation, value	14,317,000		14,317,000
Issued pursuant to directors' compensation plan, shares		37,367
Issuance of new shares, shares		49,999,999
Issuance of new shares, value	1,095,419,000	$ 50,000	1,095,369,000
Canceled pursuant to stock compensation plans, shares		(6,313,884)
Canceled pursuant to stock compensation plans, value	0	$ (6,000)	6,000
Tax withholding for stock compensation plans, shares					742,862
Tax withholding for stock compensation plans, value	(168,000)				$ (168,000)
Cancellation of Predecessor equity, shares		(509,473,744)			(2,395,633)
Cancellation of Predecessor equity, value	(5,331,000)	$ (510,000)	(2,764,915,000)	2,753,892,000	$ 6,202,000
Net income (loss)	(1,432,578,000)			(1,432,578,000)
Ending balance, shares at Sep. 18, 2020		49,999,999			0
Ending balance at Sep. 18, 2020	1,095,419,000	$ 50,000	1,095,369,000	0	$ 0
Issued pursuant to notes conversion, value	0
Stock-based compensation, value	8,907,000		8,907,000
Net income (loss)	$ (50,658,000)			(50,658,000)
Ending balance, shares at Dec. 31, 2020	49,999,999	49,999,999			0
Ending balance at Dec. 31, 2020	$ 1,053,668,000	$ 50,000	$ 1,104,276,000	$ (50,658,000)	$ 0