Net Income Per Share - Schedule of Earning Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 24, 2014	Sep. 25, 2013	Sep. 24, 2014	Sep. 25, 2013
Numerator:
Net income	$ 25,849	$ 918	$ 37,888	$ 1,268
Denominator:
Weighted-average shares outstanding-basic	34,221,829	28,712,622	30,549,979	28,712,622
Weighted-average shares outstanding-diluted	37,171,670	29,564,795	33,499,820	29,564,795
Net income per share-basic	$ 0.76	$ 0.03	$ 1.24	$ 0.04
Net income per share-diluted	$ 0.70	$ 0.03	$ 1.13	$ 0.04
Anti-dilutive securities not considered in diluted EPS calculation		218,356		218,356

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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