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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 03, 2016
Mar. 29, 2015
Jan. 03, 2016
Income Tax Disclosure [Abstract]      
Net income tax expense $ 64 $ 40  
Unrecognized tax benefits 36   $ 36,000
Penalties and interest accrued 1    
Penalties and interest accrued related to uncertain tax positions 18    
Unrecognized tax benefits related to tax positions $ 9