Product Line, Customer and Geographic Information - Schedule of Revenues and Total Trade Accounts Receivable Represents Customers Accounted for 10% or More Percentage (Detail) - Customer Concentration Risk [Member] - Trade Accounts Receivable [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Customer A [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	16.00%	15.00%
Customer B [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	0.00%	11.00%
Customer C
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk percentage	12.00%	8.00%