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Stock-Based Compensation - Total Share-Based Compensation Expense Included in Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Schedule Of Share Based Compensation Arrangements [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost	$ 27,400	$ 17,200	$ 12,500
Cost of goods sold
Schedule Of Share Based Compensation Arrangements [Line Items]
Stock-based compensation	334	351	355
Selling, general and administrative
Schedule Of Share Based Compensation Arrangements [Line Items]
Stock-based compensation	21,391	13,272	9,443
Research and development
Schedule Of Share Based Compensation Arrangements [Line Items]
Stock-based compensation	5,692	3,564	2,705
Employee Stock Option
Schedule Of Share Based Compensation Arrangements [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost	$ 13,800	$ 12,000	$ 12,200

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Schedule Of Share Based Compensation Arrangements [Line Items]

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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