Investments in Real Estate - Additional Information (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($) Property	Dec. 31, 2018 USD ($) Property
Real Estate Properties [Line Items]
Number of multifamily properties owned	57
Units (unaudited)	806	2,379
Contract Price \| $	$ 128,925	$ 272,948
Dallas, TX
Real Estate Properties [Line Items]
Date of Purchase	Feb. 11, 2020
Units (unaudited)	251
Contract Price \| $	$ 51,204

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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