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SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS - Allowance for Doubtful Accounts (Details) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	May 01, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Movement in Valuation Allowances and Reserves
Balance at Beginning of Period	$ 26,584	$ 0	$ 12,629	$ 25,963
Charges to Costs, Expenses and Other	4,728	12,628	38,273	21,042
Write-off of Accounts Receivable	8,622	0	12,738	20,409
Impact of fresh start accounting	(22,689)	0	0	0
Other	(1)	1	613	(12)
Balance at End of Period	$ 0	$ 12,629	$ 38,777	$ 26,584

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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Amount of valuation and qualifying accounts and reserves.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column B))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column E))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09(Column C)(1))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690

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Amount of decrease in valuation and qualifying accounts and reserves.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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