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Quantitative Range of Significant Unobservable Inputs Used in Calculation of Fair Value of Continent Consideration Liability (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2016
Jan. 02, 2016
Business Acquisition, Contingent Consideration [Line Items]    
Fair Value $ 906 $ 890
Fair Value, Inputs, Level 3 | Revenue Earnout    
Business Acquisition, Contingent Consideration [Line Items]    
Valuation technique Discounted cash flow  
Fair Value $ 906  
Fair Value, Inputs, Level 3 | Revenue Earnout | Weighted Average    
Business Acquisition, Contingent Consideration [Line Items]    
Weighted average cost of capital 15.40%  
Probability weighting of achieving revenue forecasts 33.50%  
Fair Value, Inputs, Level 3 | Revenue Earnout | Minimum    
Business Acquisition, Contingent Consideration [Line Items]    
Probability weighting of achieving revenue forecasts 10.00%  
Fair Value, Inputs, Level 3 | Revenue Earnout | Maximum    
Business Acquisition, Contingent Consideration [Line Items]    
Probability weighting of achieving revenue forecasts 80.00%