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Contract Balances - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Contract With Customer Asset And Liability [Line Items]      
Revenue, Remaining performance obligation $ 213,500,000    
Prepaid Expenses and Other Current Assets      
Contract With Customer Asset And Liability [Line Items]      
Assets impairment charges 0 $ 0  
Contract assets 1,300,000   $ 1,100,000
Current Deferred Revenue and Advanced Payments      
Contract With Customer Asset And Liability [Line Items]      
Revenue recognized from beginning deferred revenue $ 70,300,000 $ 69,200,000