Revenues - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Additions in deferred revenue	$ 8,200
Additional Invoicing	207,200
Total revenues	198,968	$ 151,798
Deferred revenue, revenue recognized	120,900
Revenue remaining performance obligation, contracts exceeds one year	$ 183,700
Revenue remaining performance obligation contract period	1 year
Revenue remaining performance obligation percentage recognized	94.00%
Short-term deferred revenue	$ 238,913		$ 231,030
Increase (decrease) in deferred commission expense	800
Incremental costs of deferred sales commission expense	11,500
Amortization of deferred commission expense	$ 10,700
Minimum [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Amortization period of deferred commissions	1 year
Maximum [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Amortization period of deferred commissions	3 years
Accrued Expenses and Other Current Liabilities [Member]
Revenue Initial Application Period Cumulative Effect Transition [Line Items]
Short-term deferred revenue	$ 1,400		$ 1,400