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Amounts Recognized in Consolidated Financial Statements of Operations with Respect to Stock Based Compensation Plan (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2020
Dec. 30, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense recognized $ 16,073 $ 16,816 $ 20,681
Cost of goods sold      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense recognized 3,889 3,148 2,893
Selling and marketing      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense recognized 1,919 1,887 1,902
General and administrative      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense recognized 10,083 11,568 15,676
Research and development      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense recognized $ 182 $ 213 $ 210