Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment	1
Restricted cash, current	$ 17,000		$ 17,000
Restricted cash, noncurrent	32,000		$ 34,000
Short-term Investments	$ 900,000
Business And Wholesale [Member] | Minimum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Useful life	11 years
Business And Wholesale [Member] | Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Useful life	16 years
Trademarks and Tradenames [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Useful life	5 years
Amortization method	5
Successor [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Lease Impairment	$ 44,000
Predecessor [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Reorganization Items		$ 25,000
Customer surcharges		$ 55,000