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Summary Of Significant Accounting Policies (Schedule Of Weighted Average Lives Of Property And Equipment) (Details)
12 Months Ended
Dec. 31, 2022
Building And Building Improvements [Member]  
Property, Plant and Equipment [Line Items]  
Weighted average lives of property and equipment 14 years 8 months 12 days
Transportation Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Weighted average lives of property and equipment 9 years
Machinery And Equipment [Member]  
Property, Plant and Equipment [Line Items]  
Weighted average lives of property and equipment 5 years
Computer Software [Member]  
Property, Plant and Equipment [Line Items]  
Weighted average lives of property and equipment 3 years 9 months 18 days
Furniture And Fixtures [Member]  
Property, Plant and Equipment [Line Items]  
Weighted average lives of property and equipment 4 years 6 months