Stock-Based Compensation Expense - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jul. 03, 2016	Jul. 03, 2016
Shares (in thousands)
Outstanding, shares	6,644
Granted, shares	1,687
Exercised, shares	(461)
Forfeited or expired, shares	(125)
Outstanding, shares	7,745
Exercisable as of reporting date, shares		3,408
Options vested or expected to vest as of reporting date, shares		7,025
Weighted- Average Exercise Price
Outstanding, in dollars per share	$ 28.27
Granted, in dollars per share	33.55
Exercised, in dollars per share	18.88
Forfeited or expired, in dollars per share	37.06
Outstanding, in dollars per share	29.84
Outstanding	$ 28.27	$ 29.84
Exercisable as of reporting date, Weighted-Average Exercise Price, in dollars per share		21.92
Weighted- Average Remaining Contractual Term (in years)		$ 29.13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, in years	7 years 3 months 18 days
Exercisable, in years	5 years 7 months 6 days
Options vested or expected to vest, in years	7 years 2 months 12 days
Aggregate Intrinsic Value (in thousands)
Outstanding, in dollars		$ 102,823
Exercisable, in dollars		72,213
Options vested or expected to vest, in dollars		$ 98,222