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Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 28, 2012	Sep. 29, 2011	Jun. 30, 2011
Commitments And Contingencies Disclosure [Abstract]
Amount of settlement agreement			$ 2,600
Accrual for the class action wage and hour lawsuit			1,950
Payment to the claims administrator		2,600
Reverter payment for unclaimed settlement funds	$ 665

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- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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Amount of loss contingency liability.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

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Amount of damages paid to the plaintiff in the legal matter.

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Amount of collections of receivables pertaining to a loss contingency.

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