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Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
Long Term Purchase Commitment [Line Items]  
Unconditional purchase obligations, term 4 years
Unconditional purchase obligations $ 70,699
Minimum  
Long Term Purchase Commitment [Line Items]  
Unconditional purchase obligations, term 1 year
Maximum  
Long Term Purchase Commitment [Line Items]  
Unconditional purchase obligations, term 4 years