Stock-Based Compensation - Summary of Stock-Based Compensation Activity (Detail)	6 Months Ended
Jul. 15, 2017 $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares Under Options, Outstanding, Beginning balance \| shares	200,517
Shares Under Options, Exercised/Vested \| shares	(152,589)
Shares Under Options, Outstanding, Ending balance \| shares	47,928
Weighted Average Exercise Price, Option outstanding, Beginning balance \| $ / shares	$ 19.94
Weighted Average Exercise Price, Exercised/Vested \| $ / shares	21.02
Weighted Average Exercise Price, Options outstanding, Ending balance \| $ / shares	$ 16.52
Restricted Stock Awards, Outstanding, Beginning balance \| shares	660,143
Restricted Stock Awards, Granted \| shares	292,205
Restricted Stock Awards, Exercised/Vested \| shares	(253,280)
Restricted Stock Awards, Cancelled/Forfeited \| shares	(75,951)
Restricted Stock Awards, Outstanding, Ending balance \| shares	623,117
Weighted Average Grant-Date Fair Value, Beginning balance \| $ / shares	$ 26.48
Weighted Average Grant-Date Fair Value, Granted \| $ / shares	34.82
Weighted Average Grant-Date Fair Value, Exercised/Vested \| $ / shares	25.85
Weighted Average Grant-Date Fair Value, Cancelled/Forfeited \| $ / shares	29.03
Weighted Average Grant-Date Fair Value, Ending balance \| $ / shares	$ 30.34

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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-Publisher FASB
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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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

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

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