Properties And Equipment (Schedule Of Property And Equipment) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total cost	$ 540,345	$ 546,440
Less: accumulated depreciation	(258,459)	(259,488)
Operating property, net	281,886	286,952
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	66,977	67,392
Building And Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	212,055	213,226
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	62,163	64,230
Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	192,088	194,753
Construction-In-Progress [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 7,062	$ 6,839