v3.20.2
Segment and Geographic Information - Summary of Revenue by Geography (Parenthetical) (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Revenue Benchmark [Member] | Minimum [Member]        
Disaggregation of Revenue [Line Items]        
Concentration risk, percentage 10.00% 10.00% 10.00% 10.00%