Contingencies - Additional Information (Detail) $ in Millions		1 Months Ended	12 Months Ended
	Dec. 05, 2019 USD ($)	May 31, 2016 USD ($) Claim	Dec. 31, 2019 USD ($)	Sep. 30, 2020 USD ($)
Loss Contingencies [Line Items]
Payments of civil penalty	$ 5.5
Accounts Payable and Accrued Expenses
Loss Contingencies [Line Items]
Penalty payable				$ 0.8
Operating Expense
Loss Contingencies [Line Items]
Penalty expense			$ 5.5
Supply Company, LLC
Loss Contingencies [Line Items]
Compensatory damages sought		$ 50.0
Kevin Yap
Loss Contingencies [Line Items]
Number of declaratory judgment claims | Claim		2