Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Income Tax Disclosure [Abstract]        
Provision for income taxes $ 145 $ 54 $ 145 $ (23)
Percentage of likelihood of realization that the tax position must exceed in order for the amount to be recognized     50.00%