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Investments in Real Estate Entities - Expensed Acquisition, Development and Other Pursuit Costs and Impairment of Long-Lived Assets & Casualty Gains and Losses (Details) ft² in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) home ft²	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) home ft²	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Equity method investment
Income Tax Expense (Benefit)	$ 11,184	$ 29	$ 11,178	$ 87
Impairment of investment in unconsolidated entities	0	0	0	0
Casualty and impairment (gain) loss, net	0	(554)	0	(612)
Other Selling, General and Administrative Expense	1,108	339	2,526	497
Inventory, Real Estate	453,686		453,686		$ 0
Land Parcel [Member]
Equity method investment
Casualty and impairment (gain) loss, net	$ 0	$ 0	0	$ 0
Development Communities [Member] | The Park Loggia [Member]
Equity method investment
Income Tax Expense (Benefit)			$ 6,645
Number Of Residential Units In Development | home	172		172
Retail Square Feet Development | ft²	67		67
Real Estate Investments, Projected Total Capitalized Cost	$ 626,000		$ 626,000

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Real Estate Investments, Projected Total Capitalized Cost

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Retail Square Feet Development

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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The charge against earnings in the period to reduce the carrying amount of real property to fair value.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Total of (1) improvements, (2) held-for-sale, (3) land and land under development, (4) construction-in-process, (5) mortgage loans held-in-inventory, and (6) other real estate investments which are considered inventory due to being held for sale or disposition.

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