Quarterly report pursuant to Section 13 or 15(d)

Summary of Disaggregation of Revenues Related to Geographic Areas (Detail)

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Summary of Disaggregation of Revenues Related to Geographic Areas (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Disaggregation Of Revenue [Line Items]    
Total revenue $ 8,116 $ 4,783
United States    
Disaggregation Of Revenue [Line Items]    
Total revenue 5,221 3,129
International    
Disaggregation Of Revenue [Line Items]    
Total revenue $ 2,895 $ 1,654