XML 53 R40.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Significant Accounting Policies - Additional Information (Detail)
shares in Thousands
 3 Months Ended 9 Months Ended
Sep. 29, 2018
USD ($)
shares
Sep. 30, 2017
USD ($)
shares
Sep. 29, 2018
USD ($)
segment
shares
Sep. 30, 2017
USD ($)
shares
Dec. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Summary Of Significant Accounting Policies [Line Items]            
Accrued and other current liabilities $ 27,802,000   $ 27,802,000   $ 24,254,000  
Number of Sources of Product Revenue | segment     4      
Impairment of goodwill, intangible assets and other long-lived assets $ 0 $ 0 $ 0 $ 0    
Number of days royalty revenue is adjusted subsequent to quarter end     60 days      
Options to purchase of shares of common stock | shares 600 600 1,100 200    
Retained earnings $ 884,138,000   $ 884,138,000   737,955,000  
Deferred Tax Assets, Net         19,981,000  
Prepaid Taxes 15,377,000   15,377,000   3,493,000  
Royalty $ 8,100,000 $ 8,400,000 25,300,000 $ 25,700,000    
Patents            
Summary Of Significant Accounting Policies [Line Items]            
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend     $ 300,000 $ 400,000    
Weighted average number of years until the next renewal     1 year      
Trademarks            
Summary Of Significant Accounting Policies [Line Items]            
Weighted average number of years until the next renewal     6 years      
Buildings            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     39 years      
Vehicles            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Tooling            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     3 years      
Demonstration units            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     3 years      
Restricted Stock Units (RSUs) [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares     7      
Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | shares     2,700 2,700    
Accounting Standards Update 2016-16            
Summary Of Significant Accounting Policies [Line Items]            
Retained earnings         400,000  
Deferred Tax Assets, Net         100,000  
Prepaid Taxes         500,000  
Adjustments            
Summary Of Significant Accounting Policies [Line Items]            
Accrued and other current liabilities         18,090,000  
Retained earnings         17,113,000  
Deferred Tax Assets, Net         3,917,000  
Cumulative effect adjustment         17,100,000 $ 23,900,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Accrued and other current liabilities         42,344,000  
Retained earnings         720,842,000  
Deferred Tax Assets, Net         $ 23,898,000  
Minimum            
Summary Of Significant Accounting Policies [Line Items]            
Revenue, remaining performance obligation, expected timing of satisfaction, period 3 years   3 years      
Warranty period for defects in material and workmanship     6 months      
Minimum | Land, Buildings and Improvements            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     7 years      
Minimum | Computer equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     2 years      
Minimum | Furniture and office equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     2 years      
Minimum | Machinery and equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Minimum | Aircraft and Components            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     10 years      
Maximum            
Summary Of Significant Accounting Policies [Line Items]            
Revenue, remaining performance obligation, expected timing of satisfaction, period 6 years   6 years      
Warranty period for defects in material and workmanship     48 months      
Maximum | Land, Buildings and Improvements            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     15 years      
Maximum | Computer equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     6 years      
Maximum | Furniture and office equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     6 years      
Maximum | Machinery and equipment            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     10 years      
Maximum | Aircraft and Components            
Summary Of Significant Accounting Policies [Line Items]            
Property, Plant and Equipment, Useful Life     20 years