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
	Mar. 31, 2013	Mar. 31, 2012
Discontinued Operations [Abstract]
Total revenues	$ 3,952	$ 6,685
Operating and other expenses	(1,677)	(2,541)
Depreciation and amortization	(297)	(1,643)
Interest expense (net of interest income)	(81)	(509)
Income from discontinued operations	1,897	1,992
Unrealized losses on disposition of rental property		(499)
Realized gains (losses) on disposition of rental property, net		4,511
Realized gains (losses) and unrealized losses on disposition of rental property, net		4,012
Total discontinued operations, net	$ 1,897	$ 6,004