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Summary of Significant Accounting Policies (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Dec. 27, 2014
Dec. 28, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance at beginning of period $ 67 $ 67 $ 111
Provision 0 0  
Deduction [1] (34) 0 (44)
Balance at end of period $ 33 $ 67 $ 67
[1] Deductions related to allowance for doubtful accounts represent amounts written off against the allowance, less recoveries.