Revenue - Unsatisfied Performance Obligation - Additional Information (Detail)	Sep. 30, 2020
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-10-01
Revenue From Contract With Customer [Line Items]
Unsatisfied performance obligations, expected to recognize	18.00%
Unsatisfied performance obligations, expected to recognize, period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Revenue From Contract With Customer [Line Items]
Unsatisfied performance obligations, expected to recognize	52.00%
Unsatisfied performance obligations, expected to recognize, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenue From Contract With Customer [Line Items]
Unsatisfied performance obligations, expected to recognize	30.00%
Unsatisfied performance obligations, expected to recognize, period