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Quantitative Information Associated With Fair Value Measurement of Level 3 Financial Instrument (Detail) - USD ($)
$ in Thousands
9 Months Ended
Oct. 02, 2016
Jun. 11, 2015
Universal Robots    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration   $ 31,600
Monte Carlo simulation model | Revenue for the period July 1, 2015-December 31, 2017 | Universal Robots    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Target achievement, volatility 10.70%  
Discount Rate 3.20%  
Monte Carlo simulation model | Revenue for the period July 1, 2015-December 31, 2018 | Universal Robots    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Target achievement, volatility 10.70%  
Discount Rate 3.20%  
Monte Carlo simulation model | Significant Unobservable Inputs (Level 3)    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration $ 12,013  
Monte Carlo simulation model | Significant Unobservable Inputs (Level 3) | Universal Robots    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration $ 19,824  
Income Approach Valuation Technique | Revenue for calendar year 2016 | Avionics Interface Technologies, LLC    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Discount Rate 4.00%  
Target achievement, probability 100.00%  
Income Approach Valuation Technique | Significant Unobservable Inputs (Level 3) | Avionics Interface Technologies, LLC    
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]    
Contingent consideration $ 1,050