Revenue Recognition - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Reserve for chargebacks	$ 4.0	$ 3.3
Cumulative profit sharing payment recognized	$ 9.4	6.9
Revenue, practical expedient, incremental cost of obtaining contract	true
Accrued Expenses
Disaggregation Of Revenue [Line Items]
Reserve for chargebacks	$ 2.1	1.8
Other Long-term Liabilities
Disaggregation Of Revenue [Line Items]
Reserve for chargebacks	1.9	1.5
Prepaid Expenses and Other Current Assets
Disaggregation Of Revenue [Line Items]
Cumulative profit sharing payment recognized	0.8	0.3
Other Assets
Disaggregation Of Revenue [Line Items]
Cumulative profit sharing payment recognized	$ 8.6	$ 6.6