FRESH START ACCOUNTING (Gain on Settlement of Liabilities Subject to Compromise) (Details) - USD ($) $ in Thousands	2 Months Ended	4 Months Ended	8 Months Ended	12 Months Ended
	Aug. 31, 2020	Dec. 31, 2020	Aug. 31, 2020	Dec. 31, 2021	Sep. 01, 2020
Reorganization, Chapter 11 [Line Items]
6.625% senior subordinated notes due 2021 (including accrued interest as of the petition date)					$ 672,369
Accounts payable					1,179
Employee separation benefit plan obligations					23,394
Litigation settlements		$ 2,070		$ 0	45,000
Royalty suspense accounts payable					20,273
Total liabilities subject to compromise					0
Separation settlement treatment					(6,905)
Common Stock, Value, Issued		(120)		(120)
Gain on settlement of liabilities subject to compromise	$ 567,853	0	$ 567,853	0
5% equity facility	$ 9,900	$ 0	$ 9,866	$ 0
Predecessor
Reorganization, Chapter 11 [Line Items]
Total liabilities subject to compromise					762,215
Allowed claim holders
Reorganization, Chapter 11 [Line Items]
Common Stock, Value, Issued					(175,521)
Disputed Claims Reserve [Member]
Reorganization, Chapter 11 [Line Items]
Common Stock, Value, Issued					$ (11,936)