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Fair Value Measurement - Financial Assets and Liabilities Measured and Recognized at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Apr. 02, 2016
Jan. 02, 2016
Money Market Funds    
Assets:    
Assets, Fair Value Measurements $ 9,263 $ 9,212
Money Market Funds | Level 1    
Assets:    
Assets, Fair Value Measurements 9,263 9,212
Earn Out Liability    
Liabilities:    
Liabilities, Fair Value Measurements 920 1,005
Earn Out Liability | Level 3    
Liabilities:    
Liabilities, Fair Value Measurements $ 920 $ 1,005