Properties And Equipment (Summary Of Investment And Development Property) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Investment and development property	$ 8,353	$ 8,789
Land [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	3,642	3,856
Construction-In-Progress (Including Capitalized Interest) [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	$ 4,711	$ 4,933