Investment in Joint Ventures - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Operational Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Management and call center fee earned	$ 1.8	$ 2.7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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