Real Estate Facilities (Activity In Real Estate Facilities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Land [Member]	Dec. 31, 2013 Land [Member]	Mar. 31, 2014 Building And Improvements [Member]	Mar. 31, 2014 Accumulated Depreciation [Member]
Property, Plant and Equipment [Line Items]
Balances	$ 2,138,663		$ 827,092	$ 827,092	$ 2,346,958	$ (1,035,387)
Capital improvements, net	10,534				10,534
Disposals					(1,868)	1,868
Depreciation and amortization	(28,441)	(26,961)				(28,441)
Balances	$ 2,120,756		$ 827,092	$ 827,092	$ 2,355,624	$ (1,061,960)