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Stockholders' Equity and Noncontrolling Interests - Summary of ATM Program (Detail) - ATM Program	3 Months Ended
	Mar. 31, 2021 USD ($) $ / shares shares
Subsidiary Sale Of Stock [Line Items]
Number of Shares Sold | shares	2,900
Current forward price | $ / shares	$ 14.20
Net proceeds | $	$ 41,177
December 31, 2020
Subsidiary Sale Of Stock [Line Items]
Number of Shares Sold | shares	900
Current forward price | $ / shares	$ 13.53
Net proceeds | $	$ 12,177
Expiration Date of Forward Contract	Dec. 13, 2021
March 31, 2021
Subsidiary Sale Of Stock [Line Items]
Number of Shares Sold | shares	2,000
Current forward price | $ / shares	$ 14.50
Net proceeds | $	$ 29,000
Expiration Date of Forward Contract	Mar. 31, 2022

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=120519210&loc=d3e90205-114008

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