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Property Acquisitions, Discontinued Operations, And Assets Held For Sale (Summary Of Income From Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Property Acquisitions, Discontinued Operations, And Assets Held For Sale [Abstract]
Property revenues	$ 164	$ 9,127	$ 1,896	$ 19,288
Property expenses	(102)	(4,159)	(871)	(8,932)
Operating results	62	4,968	1,025	10,356
Depreciation and Amortization	0	2,223	215	4,621
Income from discontinued operations	62	2,745	810	5,735
Gain on sale of discontinued operations, net of tax	$ 24,866	$ 0	$ 56,649	$ 32,541

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Amount of expense from discontinued operations, that reflects the allocation of the cost of tangible and intangible assets over the assets' useful lives.

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Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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After tax income (loss) from operations of a business component (exclusive of any gain (loss) on disposal, or provision therefore) during the reporting period, until its disposal.

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