Summary Of Significant Accounting Policies (Composition Of Intangible And Other Long-term Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Feb. 02, 2021	Dec. 31, 2020
Schedule of Intangible Assets by Major Class [Line Items]
Gross Amount	$ 9,414		$ 22,814
Accumulated Amortization	850		17,818
Net Balance	$ 8,564	$ 24,220	4,996
Customer relationships
Schedule of Intangible Assets by Major Class [Line Items]
Estimated Useful Lives	17 years
Gross Amount	$ 0		14,592
Accumulated Amortization	0		10,077
Net Balance	$ 0		4,515
Trademarks
Schedule of Intangible Assets by Major Class [Line Items]
Estimated Useful Lives	10 years
Gross Amount	$ 7,294		4,744
Accumulated Amortization	655		4,263
Net Balance	$ 6,639		481
Non-Compete Agreements
Schedule of Intangible Assets by Major Class [Line Items]
Estimated Useful Lives	3 years
Gross Amount	$ 0		3,478
Accumulated Amortization	0		3,478
Net Balance	$ 0