Equity-Based Compensation - Summary of Stock Option Activity (Detail) (Stock Option [Member], USD $)	3 Months Ended
Apr. 04, 2015
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding at beginning of year	415,960
Shares, Exercised	(133,981)
Shares, Expired	(1,550)
Shares, Outstanding at end of period	280,429
Shares, Exercisable at end of period	280,429
Weighted-Average Exercise Price, Outstanding at beginning of year	$ 40.19
Weighted-Average Exercise Price, Exercised	$ 44.36
Weighted-Average Exercise Price, Expired	$ 51.62
Weighted-Average Exercise Price, Outstanding at end of period	$ 38.13
Weighted-Average Exercise Price, Exercisable at end of period	$ 38.13
Intrinsic value of exercised options	$ 5,709,000
Weighted-average remaining contractual term, Outstanding	2 years 6 months
Weighted-average remaining contractual term, Exercisable	2 years 6 months
Aggregate intrinsic value, Outstanding	13,600,000
Aggregate intrinsic value, Exercisable	$ 13,600,000

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 of the plan that expired.

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

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