Property And Equipment (Summary Of Investment And Development Property) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Investment and development property, net	$ 50,231	$ 43,687	[1]
Land [Member]
Property, Plant and Equipment [Line Items]
Investment and development property, net	24,791	24,616
Building [Member]
Property, Plant and Equipment [Line Items]
Investment and development property, net	1,900	1,900
Construction-In-Progress (including capitalized interest) [Member]
Property, Plant and Equipment [Line Items]
Investment and development property, net	$ 23,540	$ 17,171

[1] Certain 2016 balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).