XML 113 R54.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands, shares in Millions
 3 Months Ended 12 Months Ended
Mar. 30, 2019
USD ($)
Dec. 28, 2019
USD ($)
segment
shares
Dec. 29, 2018
USD ($)
shares
Dec. 30, 2017
USD ($)
shares
Dec. 30, 2018
USD ($)
Summary Of Significant Accounting Policies [Line Items]          
Short-term investments   $ 120,000 $ 0    
Number of Sources of Product Revenue | segment   4      
Royalty Revenue, Number of Days Royalty Revenue is Adjusted Subsequent to Quarter End   60 days      
Royalty   $ 700 26,400 $ 32,800  
Advertising costs   $ 14,000 $ 17,900 $ 17,800  
Options to purchase of shares of common stock | shares   0.4 1.1 0.4  
Number of reportable segments | segment   1      
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability         $ 22,500
Cumulative Effect on Retained Earnings, Net of Tax, Lease Receivable         62,000
Cumulative Effect on Retained Earnings, Net of Tax, Leased Equipment         103,500
Cumulative Effect on Retained Earnings, Net of Tax, Deferred Tax Assets         8,600
Cumulative Effect on Retained Earnings, Net of Tax, Deferred Tax Deferred Revenue and Contract-Related Liabilities         9,100
Cumulative Effect on Retained Earnings, Net of Tax, Other Current Liabilities         $ 3,000
Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Maturity of Time Deposits   2 months      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period   3 years      
Warranty period for defects in material and workmanship   6 months      
Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Maturity of Time Deposits   10 months      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period     6 years    
Warranty period for defects in material and workmanship   48 months      
Restricted Stock Units (RSUs)          
Summary Of Significant Accounting Policies [Line Items]          
Weighted Average Number of Shares, Contingently Issuable | shares   2.7 2.7 2.7  
Aircraft and components | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   4 years      
Aircraft and components | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   20 years      
Building          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   39 years      
Buildings improvements | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   7 years      
Buildings improvements | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   15 years      
Computer equipment | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   2 years      
Computer equipment | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   6 years      
Demonstration units          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   3 years      
Furniture and Office Equipment | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   2 years      
Furniture and Office Equipment | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   6 years      
Machinery and equipment | Minimum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   5 years      
Machinery and equipment | Maximum          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   10 years      
Tooling          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   3 years      
Vehicles          
Summary Of Significant Accounting Policies [Line Items]          
Property and equipment, useful life   5 years      
Retained Earnings | Accounting Standards Update 2016-02          
Summary Of Significant Accounting Policies [Line Items]          
Cumulative Effect on Retained Earnings, Tax $ 26,800        
Patents          
Summary Of Significant Accounting Policies [Line Items]          
Estimated life maximum   10 years      
Trademarks          
Summary Of Significant Accounting Policies [Line Items]          
Estimated life maximum   17 years