Real Estate Net Revenue and Net Income from Property Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Real Estate [Abstract]
Net revenue from discontinued operations					$ 0	$ 6,734	$ 10,133
Results from discontinued operations
Income from discontinued operations					0	932	1,672
Gain on sale of real estate from discontinued operations					0	36,720	3,981
Results from discontinued operations	$ 36,999	$ 317	$ 228	$ 108	$ 0	$ 37,652	$ 5,653

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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Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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