Real Estate Net Revenue and Net Income from Property Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate [Abstract]
Net revenue from discontinued operations	$ 0	$ 0	$ 6,734
Results from discontinued operations
Income from discontinued operations	0	0	932
Gain on sale of real estate from discontinued operations	0	0	36,720
Results from discontinued operations	$ 0	$ 0	$ 37,652

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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