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Revenues - Summary of Changes in Certain Contract Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]    
Accounts receivable $ 55,012 $ 40,999
Short-term deferred revenue and customer prepayments (3,916) (7,309)
Long-term deferred revenue (573) (733)
Deferred expenses 980 1,650
Sales allowances (1,919) $ (597)
Accounting Standards Update 2014-09 [Member]    
Disaggregation of Revenue [Line Items]    
Accounts receivable 14,013  
Short-term deferred revenue and customer prepayments 3,393  
Long-term deferred revenue 160  
Deferred expenses (670)  
Sales allowances $ (1,322)