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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Income Taxes [Line Items]        
(Benefit from) provision for income taxes $ (135) $ 4 $ (103) $ 29
Release of deferred tax assets valuation allowance     (9,200)  
Unrecognized tax benefits recognition impact on income tax rate $ 900   $ 900  
Earliest Tax Year        
Income Taxes [Line Items]        
Open Tax Year     2008  
Latest Tax Year        
Income Taxes [Line Items]        
Open Tax Year     2014