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Summary of Significant Accounting Policies - Summary of Activities for Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012
Summary of activities for discontinued operations
Total revenues	$ 1,630us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue
Income (loss) from discontinued operations	(325)us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss
Gain on sales of aesthetics business	1,149us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax
Income from discontinued operations, before income taxes	824us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax
Income tax (benefit) expense	(784)us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation
Income from discontinued operations, net of tax	$ 1,608us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity

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Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component.

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-Publisher FASB

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Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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