Discontinued Operations (Summary Of Income From Discontinued Operations And Related Realized And Unrealized Gains (Losses)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Discontinued Operations [Abstract]
Total revenues	$ 938	$ 1,940	$ 2,466	$ 4,056
Operating and other expenses	(607)	(882)	(1,485)	(1,970)
Depreciation and amortization	(13)	(422)	(428)	(863)
Interest expense (net of interest income)		(447)	(428)	(894)
Income from discontinued operations before gains (losses) and unrealized losses on disposition of rental property	318	189	125	329
Realized gains (losses) and unrealized losses on disposition of rental property, net	(1,634)		2,378
Total discontinued operations, net	$ (1,316)	$ 189	$ 2,503	$ 329