Revenue - Additional Information (Detail)	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Direct Sales [Member] \| Customer Concentration Risk [Member] \| Significant Customers [Member]
Disaggregation Of Revenue [Line Items]
Direct sales, percentage of net sales	20.70%	16.00%	22.10%	18.60%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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