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Revenue Recognition - Summary of Deferred Revenue Balances Offset with Contract Assets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Revenue Recognition [Abstract]        
Gross deferred revenue $ 58,022 $ 85,402 $ 56,920 $ 63,204
Gross contract assets (21,018) (50,868)    
Deferred revenue, net $ 37,004 $ 34,534