Stockholders' Equity - Summary of Company's Equity Award Activity - Options (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Disclosure Stockholders Equity Summary Of Companys Equity Award Activity Options [Abstract]
Number of Options, beginning balance	6,367	9,008	9,873
Number of Options, granted	25	0	127
Number of Options, exercised (in shares)	(2,001)	(2,217)	(582)
Number of Options, canceled	(93)	(424)	(410)
Number of Options, ending balance	4,298	6,367	9,008
Number of Options, Vested and expected to vest as of December 27, 2014	4,296
Number of Options, Exercisable at December 27, 2014	4,219
Weighted-Average Exercise Price Per Share, beginning balance	$ 7.26	$ 7.13	$ 7.03
Weighted-Average Exercise Price Per Share, Options granted	$ 9.02	$ 0.00	$ 7.18
Weighted-Average Exercise Price Per Share, Options exercised	$ 6.99	$ 6.59	$ 4.39
Weighted-Average Exercise Price Per Share, Options canceled	$ 12.38	$ 8.04	$ 8.50
Weighted-Average Exercise Price Per Share, ending balance	$ 7.29	$ 7.26	$ 7.13
Weighted-Average Exercise Price Per Share, Exercisable at December 27, 2014	$ 7.28
Aggregate Intrinsic Value, beginning balance	$ 17,452	$ 5,726	$ 7,924
Aggregate Intrinsic Value, Options exercised	8,182	7,583	1,484
Aggregate Intrinsic Value, ending Balance	32,833	17,452	5,726
Aggregate Intrinsic Value, Vested and expected to vest as of December 27, 2014	32,814
Aggregate Intrinsic Value, Exercisable at December 27, 2014	$ 32,261

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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