Revenues - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Minimum [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue payment terms	30 days
Maximum [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue payment terms	90 days
Revenue recognition timing of invoicing period	1 year
Contract Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Accrued sales incentives	$ 2.5	$ 2.4