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Real Estate Held for Sale in Consolidated VIEs (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	Feb. 28, 2019	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Investment [Line Items]
Real estate held for sale before accumulated depreciation and amortization			$ 0		$ 0		$ 29,704,000
Riverchase Landing | VIE, Primary Beneficiary
Investment [Line Items]
Gain on sale		$ 2,300,000
Land							2,650,000
Building and improvements							26,032,000
Furniture, fixtures and equipment							974,000
Lease intangible							2,802,000
Real estate held for sale before accumulated depreciation and amortization							32,458,000
Accumulated depreciation							(418,000)
Accumulated amortization of lease intangible							(2,336,000)
Real estate held for sale in consolidated variable interest entities			0		0		$ 29,704,000
Depreciation			0	$ 0	0	$ 0
Amortization			$ 0		$ 0	$ 0
The Clusters | VIE, Primary Beneficiary
Investment [Line Items]
Gain on sale	$ 1,600,000

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The net gain (loss) resulting from sales and other disposals of real estate owned for investment purposes.

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