Properties And Equipment (Summary Of Investment And Development Property) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Investment and development property	$ 9,668	$ 9,570
Land [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	4,224	4,193
Construction-In-Progress (Including Capitalized Interest) [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	$ 5,444	$ 5,377