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Stock Options - Summary of Activity Under Plans and Agreement (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options Outstanding shares, Granted	848	504
Options Outstanding shares, Exercised
Options Outstanding shares, Canceled	(316)	(552)
Options Outstanding shares, ending balance	4,745	4,213	4,261
Options outstanding weighted average exercise price, Granted	$ 10.06	$ 8.65
Options outstanding weighted average exercise price, Exercised
Options outstanding weighted average exercise price, Canceled	$ 8.40	$ 7.67
Options outstanding weighted average exercise price, ending balance	$ 8.99	$ 9.30	$ 9.19
Options Outstanding Aggregate Intrinsic value	$ 15,434	$ 5,348	$ 2,229
Option Outstanding Weighted Average Remaining Term	6 years 2 months 19 days	5 years 11 months 5 days	6 years 4 months 2 days

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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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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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 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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