Real Estate Facilities (Summary Of Real Estate Assets Acquired And Liabilities Assumed) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Real Estate Facilities [Abstract]
Land	$ 11,123	$ 9,668
Buildings and improvements	2,153	3,978
Accrued and other liabilities (below-market in-place rents)		(212)
Other assets (in-place lease value)	237	390
Total purchase price	13,513	13,824
Net operating assets acquired and liabilities assumed	(90)	(88)
Total cash paid	$ 13,423	$ 13,736