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Quantitative Information Associated With Fair Value Measurement of Level 3 Financial Instrument (Detail) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2014
Oct. 04, 2015
Jun. 11, 2015
Dec. 31, 2014
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Contingent consideration   $ 14,447   $ 895
Universal Robots        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Contingent consideration     $ 33,800  
Avionics Interface Technologies, LLC        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Contingent consideration $ 1,800      
Discount rate 4.70%      
Significant Unobservable Inputs (Level 3) | Income Approach Valuation Technique | Universal Robots        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Contingent consideration   33,845    
Significant Unobservable Inputs (Level 3) | Income Approach Valuation Technique | Avionics Interface Technologies, LLC        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Contingent consideration   $ 750    
Ebitda | Universal Robots        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Target achievement, probability   99.00%    
Discount rate   6.00%    
Forecasted Revenues | Universal Robots        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Target achievement, probability   72.00%    
Discount rate   8.00%    
Outperformance Revenue | Universal Robots        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Target achievement, probability   29.00%    
Discount rate   10.00%    
Revenue Earnout | Avionics Interface Technologies, LLC        
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]        
Target achievement, probability   36.00%    
Discount rate   4.70%