Real Estate Facilities (Summary Of Real Estate Assets Acquired And Liabilities Assumed) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Real Estate Facilities [Abstract]
Land	$ 21,408	$ 39,667
Land held for development		990
Buildings and improvements	24,890	76,943
Above-market in-place lease value		403
Below-market in-place lease value	(666)	(2,428)
Total purchase price	45,632	115,575
Net operating assets acquired and liabilities assumed	(611)	(1,630)
Total cash paid	$ 45,021	$ 113,945