Goodwill And Intangible Assets (Summary Of Intangible Assets Other Than Goodwill) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 25,185	$ 26,189
Less: Accumulated amortization	(22,964)	(23,758)
Less: Impairments	(24)	(40)
Net intangible assets other than goodwill	2,197	2,391
Beneficial Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	11,262	12,216
Less: Accumulated amortization	(11,040)	(11,964)
Net intangible assets other than goodwill	222	252
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	9,058	9,058
Less: Accumulated amortization	(7,917)	(7,838)
Net intangible assets other than goodwill	1,141	1,220
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	4,865	4,915
Less: Accumulated amortization	(4,007)	(3,956)
Less: Impairments	(24)	(40)
Net intangible assets other than goodwill	$ 834	$ 919