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Summary of Significant Accounting Policies - Additional Information (Detail) shares in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 29, 2019 USD ($) shares | Mar. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) shares | Jun. 29, 2019 USD ($) segment shares | Jun. 30, 2018 USD ($) shares | Dec. 30, 2018 USD ($) | Dec. 29, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Short-term investments | $ 180,000,000.0 |  |  | $ 180,000,000.0 |  |  | $ 0
Impairment of goodwill, intangible assets and other long-lived assets |  |  |  | $ 0 | $ 0 |  |
Number of Sources of Product Revenue | segment |  |  |  | 4 |  |  |
Number of days royalty revenue is adjusted subsequent to quarter end |  |  |  | 60 days |  |  |
Royalty | $ 0.0 |  | $ 9,100,000 | $ 700,000 | $ 17,200,000 |  |
Options to purchase of shares of common stock | shares | 400 |  | 1,200 | 300 | 1,100 |  |
Cumulative Effect on Retained Earnings, Net of Tax, ROU Assets and Lease Liabilities |  |  |  |  |  | $ 22,500,000 |
Cumulative Effect on Retained Earnings, Net of Tax, Lease Receivable |  |  |  |  |  | 62,000,000.0 |
Cumulative Effect on Retained Earnings, Net of Tax, Leased Equipment |  |  |  |  |  | 103,500,000 |
Cumulative Effect on Retained Earnings, Net of Tax, Deferred Tax Assets |  |  |  |  |  | 8,600,000 |
Cumulative Effect on Retained Earnings, Net of Tax, Deferred Tax Deferred Revenue and Contract-Related Liabilities |  |  |  |  |  | 9,100,000 |
Cumulative Effect on Retained Earnings, Net of Tax, Other Current Liabilities |  |  |  |  |  | $ 3,000,000.0 |
Patents |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend |  |  |  | $ 400,000 | $ 200,000 |  |
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 |  |  |
Demonstration units |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 3 years |  |  |
Tooling |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 3 years |  |  |
Vehicles |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 5 years |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |
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 |  |  |  | 98 |  |  |
Restricted Stock Units (RSUs) | Chief Executive Officer |  |  |  |  |  |  |
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 2016-02 |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Cumulative Effect on Retained Earnings, Tax, Adoption of ASU 2016-02 |  | $ (26,795,000) |  |  |  |  |
Minimum |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity of Time Deposits | 6 months |  |  |  |  |  |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 3 years |  |  | 3 years |  |  |
Warranty period for defects in material and workmanship |  |  |  | 6 months |  |  |
Minimum | Aircraft and components |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 10 years |  |  |
Minimum | Building 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 |  |  |
Maximum |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Maturity of Time Deposits | 1 year |  |  |  |  |  |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 6 years |  |  | 6 years |  |  |
Warranty period for defects in material and workmanship |  |  |  | 48 months |  |  |
Maximum | Aircraft and components |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 20 years |  |  |
Maximum | Building 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 |  |  |
Retained Earnings | Accounting Standards Update 2016-02 |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Cumulative Effect on Retained Earnings, Tax, Adoption of ASU 2016-02 |  | $ (26,795,000) |  |  |  |  |

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