Stock-Based Compensation Expense - Summary of Stock Option Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding, Shares	6,138
Granted, Shares	1,206
Exercised, Shares	(396)
Forfeited or expired, Shares	(73)
Outstanding, Shares	6,875
Exercisable, Shares	2,481
Options vested or expected to vest, Shares	6,130	[1]
Outstanding, Weighted-Average Exercise Price, in dollars per share	$ 15.65
Granted, Weighted-Average Exercise Price, in dollars per share	$ 39.31
Exercised, Weighted-Average Exercise Price, in dollars per share	$ 15.02
Forfeited or expired, Weighted-Average Exercise Price, in dollars per share	$ 18.02
Outstanding, Weighted-Average Exercise Price, in dollars per share	$ 19.80
Exercisable, Weighted-Average Exercise Price, in dollars per share	$ 13.59
Options vested or expected to vest, Weighted-Average Exercise Price, in dollars per share	$ 18.93	[1]
Outstanding, Weighted-Average Remaining Contractual Term	7 years 5 months 6 days
Exercisable, Weighted-Average Remaining Contractual Term	5 years 9 months 24 days
Options vested or expected to vest, Weighted-Average Remaining Contractual Term	7 years 2 months 2 days	[1]
Outstanding, Aggregate Intrinsic Value	$ 98,435
Exercisable, Aggregate Intrinsic Value	48,212
Options vested or expected to vest, Aggregate Intrinsic Value	$ 92,123	[1]

[1] In addition to the vested options, the Company expects a portion of the unvested options to vest at some point in the future. Options expected to vest are calculated by applying an estimated forfeiture rate to the unvested options.