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Revenues from Contracts with Customers - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]      
Deferred revenue $ 2.4   $ 2.9
Deferred revenue, revenue recognized $ 1.3 $ 0.2