Revenue and Related Matters - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract assets	$ 0	$ 0	$ 0	$ 0
Contract with customer, contract duration			1 year
Deferred revenue recognized	58,400,000	43,600,000	$ 139,300,000	115,900,000
Revenue expected to be recognized	409,700,000		409,700,000
Amortization expense related to deferred commissions	$ 11,800,000	$ 10,000,000.0	21,800,000	18,900,000
Impairment of deferred commissions			$ 0	$ 0
Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with customer, expected payment term			one year