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Summary of Significant Accounting Policies - Additional Information (Detail) shares in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 30, 2019 USD ($) segment shares | Mar. 31, 2018 USD ($) shares | Dec. 30, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |
Depreciation and amortization | $ 5,419,000 | $ 5,241,000 |
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 | $ 700,000 | $ 8,100,000 |
Options to purchase of shares of common stock | shares | 300 | 900 |
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 |  |  | 57,700,000
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 |  |  | 13,400,000
Cumulative Effect on Retained Earnings, Net of Tax, Other Current Liabilities |  |  | $ 3,000,000
Patents |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend | $ 300,000 | $ 100,000 |
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 | 88 |  |
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 |
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 |  |
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 |  |
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 |  |

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