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Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Jan. 02, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 419,482		$ 419,482		$ 406,647
Accumulated depreciation	(144,759)		(144,759)		(134,136)
Property and equipment, net	274,723		274,723		272,511
Depreciation	6,400	$ 5,300	12,300	$ 10,200
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	141,856		141,856		122,310
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Total property and equipment	100,682		100,682		90,843
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	57,255		57,255		57,151
Transportation, vehicles and other
Property, Plant and Equipment [Line Items]
Total property and equipment	33,111		33,111		33,175
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	31,510		31,510		24,693
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	20,476		20,476		19,295
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	14,103		14,103		13,567
Demonstration units
Property, Plant and Equipment [Line Items]
Total property and equipment	1,046		1,046		1,024
Construction-in-progress (CIP)
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 19,443		$ 19,443		$ 44,589

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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