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Concentrations Of Credit Risk - Additional Information (Detail) - Customer
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Concentration Risk [Line Items]      
Number of customers that accounted for more than 10% of consolidated net sales 0 0 0
Concentration risk threshold 10.00% 10.00% 10.00%
All Foreign Countries [Member] | Sales [Member]      
Concentration Risk [Line Items]      
Concentration risk threshold 10.00% 10.00% 10.00%