Product Line, Customer and Geographic Information - Schedule of Revenues and Total Trade Accounts Receivable Represents Customer Accounted for 10% or More Percentage (Detail) - Customer Concentration Risk [Member] - Trade Accounts Receivable [Member]	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Customer A [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk percentage	31.00%	15.00%
Customer B [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk percentage	10.00%	8.00%
Customer C [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Concentration risk percentage	0.00%	11.00%