Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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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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Percentage of vesting of share-based compensation awards.

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Number of non-vested options outstanding.

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Equity-Based Compensation - Additional Information (Detail) - USD ($)			3 Months Ended		6 Months Ended
	May. 21, 2015	Mar. 11, 2015	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			5,300,000		5,300,000		6,900,000
Unvested stock outstanding			800,000		800,000		900,000
Unrecognized compensation expense			$ 4,400,000		$ 4,400,000
Weighted-average period expected to be recognized					1 year 6 months
Recognized compensation expense			$ 1,292,000	$ 1,588,000	$ 2,434,000	$ 2,995,000
Proceeds from the exercise of stock options					$ 6,218,000	$ 4,786,000
Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
2013 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under plan			10,089,072		10,089,072
2013 Incentive Plan [Member] \| Officers and Team Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate purchase of common stock granted		277,833
Stock options awarded to employees, exercise price		$ 34.33
Grant date fair value		$ 9.42
2013 Incentive Plan [Member] \| Independent Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate purchase of common stock granted	14,492
Stock options awarded to employees, exercise price	$ 30.30
Grant date fair value	$ 8.28
2011 Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance under plan			12,100,000		12,100,000
Options outstanding			4,433,993		4,433,993
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested stock outstanding			100,000		100,000		100,000
Unrecognized compensation expense			$ 4,300,000		$ 4,300,000
Weighted-average period expected to be recognized					1 year 9 months 18 days
RSUs [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					2 years
RSUs [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					3 years
RSUs [Member] \| 2013 Incentive Plan [Member] \| Officers and Team Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate purchase of common stock granted		87,394
Grant date fair value		$ 34.33
RSUs [Member] \| 2013 Incentive Plan [Member] \| Independent Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate purchase of common stock granted	3,896
Grant date fair value	$ 30.30
Performance Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards vesting description					The performance conditions must be met at the end of the next fiscal year, or the performance stock awards are cancelled. If the performance conditions are met, the performance stock awards vest 50 percent at each of the second and third anniversary of the grant date.
Unvested stock outstanding			100,000		100,000		0
Unrecognized compensation expense			$ 2,500,000		$ 2,500,000
Weighted-average period expected to be recognized					2 years 2 months 12 days
Recognized compensation expense					$ 0
Performance Stock Awards [Member] \| Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards vesting percentage					50.00%
Performance Stock Awards [Member] \| Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance stock awards vesting percentage					50.00%
Performance Stock Awards [Member] \| 2013 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate purchase of common stock granted		71,753
Grant date fair value		$ 34.33