Property And Depreciation (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Depreciation	$ 43,100,000	$ 37,600,000	$ 36,200,000
Net book value of sold assets held for sale	0	0	400,000
Gain on sale of assets held for sale			$ 9,100,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Other Operating Income (Expense), Net
Capitalized Computer Software, Additions	11,900,000	2,100,000
Impairment, Long-Lived Asset, Held-for-Use	0	0	$ 0
Held-for-sale [Member]
Property, Plant and Equipment [Line Items]
Net book value of assets held for sale	$ 6,700,000	$ 6,700,000