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Investments in Real Estate Ventures at Fair Value - Schedule of Investments in Real Estate Ventures (Detail) - USD ($)	5 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Equity Method Investments And Joint Ventures [Abstract]
Fair value investments, beginning balance	$ 9,306,000	$ 0
Investments	1,200,000
Distributions	(1,525,000)
Change in fair value	(560,000)	(560,000)	$ 0
Fair value investments, ending balance	$ 8,421,000	$ 8,421,000	$ 0

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