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Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Jan. 02, 2021
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 413,113		$ 406,647
Accumulated depreciation	(138,543)		(134,136)
Property and equipment, net	274,570		272,511
Depreciation	6,000	$ 5,000
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	141,219		122,310
Machinery, equipment and tooling
Property, Plant and Equipment [Line Items]
Total property and equipment	95,828		90,843
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	57,002		57,151
Transportation, vehicles and other
Property, Plant and Equipment [Line Items]
Total property and equipment	33,133		33,175
Computer equipment and software
Property, Plant and Equipment [Line Items]
Total property and equipment	25,142		24,693
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	19,847		19,295
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	14,057		13,567
Demonstration units
Property, Plant and Equipment [Line Items]
Total property and equipment	1,016		1,024
Construction-in-progress (CIP)
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 25,869		$ 44,589

X

- 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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