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Fair Value of Financial Instruments (Details) - Recurring - USD ($)
$ in Thousands
Oct. 01, 2016
Jan. 02, 2016
Level 1    
Fair Value of Financial Instruments    
Total Assets $ 22 $ 6,015
Level 1 | Money market funds    
Fair Value of Financial Instruments    
Cash and cash equivalents 22 6,015
Level 3    
Fair Value of Financial Instruments    
Contingent acquisition liability 510 773
Total Liabilities $ 510 $ 773