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Summary of Significant Accounting Policies - Additional Information (Detail) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2022 USD ($) segment shares	Apr. 03, 2021 shares	Jan. 01, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of Sources of Product Revenue | segment	4
Options to purchase of shares of common stock | shares	600	200
Property, Plant and Equipment, Gross	$ 463,377		$ 430,294
Patents
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Trademarks
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	17 years
Computer equipment and software
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Gross	$ 33,517		32,450
Demonstration units
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Property, Plant and Equipment, Gross	$ 869		949
Machinery, equipment and tooling
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Gross	107,122		103,451
Operating lease assets
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Gross	9,930		0
Transportation, vehicles and other
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Gross	$ 33,053		$ 33,082
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	131
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]
Warranty period for defects in material and workmanship	6 months
Minimum | Buildings and building improvements
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Minimum | Computer equipment and software
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, equipment and tooling
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum | Transportation, vehicles and other
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	4 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Warranty period for defects in material and workmanship	48 months
Maximum | Buildings and building improvements
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	39 years
Maximum | Computer equipment and software
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	12 years
Maximum | Furniture and office equipment
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	6 years
Maximum | Machinery, equipment and tooling
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Maximum | Transportation, vehicles and other
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	20 years

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