Property And Equipment (Summary Of Investment And Development Property) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Investment and development property	$ 21,793	$ 26,124
Land [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	20,329	23,833
Construction-In-Progress (Including Capitalized Interest) [Member]
Property, Plant and Equipment [Line Items]
Investment and development property	$ 1,464	$ 2,291