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Revenue Recognition - Summary of Contract Assets Offset with Deferred Revenue Balances (Detail) - USD ($)
$ in Thousands
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Revenue Recognition [Abstract]            
Gross deferred revenue $ 67,817 $ 56,920 $ 63,204 $ 45,801 $ 36,081 $ 51,694
Gross contract assets (29,279)   (38,557)      
Deferred revenue, net $ 38,538   $ 24,647