Income Taxes Income Tax Reconciliation, Narrative (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Change in valuation allowance	$ 1,190	$ 0	$ 0
Federal tax credits	520
Research and development tax credits	304
Income Taxes Paid, Net	58	1,318	97
Income Tax Settlement			$ 1,300

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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