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Acquisitions - Additional Information (Detail) - USD ($)
1 Months Ended 2 Months Ended 3 Months Ended 4 Months Ended 12 Months Ended
Jun. 11, 2015
Oct. 31, 2014
Jan. 31, 2017
Dec. 31, 2014
Mar. 31, 2016
Oct. 04, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition [Line Items]                  
Payments of contingent consideration             $ 11,697,000    
Universal Robots                  
Business Acquisition [Line Items]                  
Total purchase price $ 315,437,000                
Cash paid to acquire outstanding common and preferred stock 283,800,000                
Contingent consideration 31,600,000                
Arrangement range of outcomes value high 65,000,000                
Payments of contingent consideration         $ 15,000,000   $ 15,000,000    
EBITDA contingent consideration amount, percentage         100.00%   100.00%    
Maximum payment per earn-out             $ 25,000,000    
Goodwill, not deductible for tax purposes $ 221,100,000                
Revenues           $ 41,900,000      
Income (loss) before income taxes           $ (7,600,000)      
Net income               $ 199,784,000 $ 61,078,000
Universal Robots | Fair Value Adjustment to Inventory                  
Business Acquisition [Line Items]                  
Net income               1,600,000 1,600,000
Universal Robots | Acquisition Related Costs                  
Business Acquisition [Line Items]                  
Net income               $ 1,000,000 1,000,000
Avionics Interface Technologies, LLC                  
Business Acquisition [Line Items]                  
Total purchase price   $ 21,243,000              
Cash paid to acquire outstanding common and preferred stock   19,400,000              
Contingent consideration   $ 1,800,000              
Revenues       $ 600,000          
Income (loss) before income taxes       $ (800,000)          
Net income                 $ 82,169,000
Discount rate   4.70%              
Goodwill, expected tax deduction   $ 10,500,000              
Avionics Interface Technologies, LLC | Subsequent Event                  
Business Acquisition [Line Items]                  
Payments of contingent consideration     $ 1,100,000