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Property and Equipment - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 263,762	$ 246,333
Accumulated depreciation and amortization	(97,790)	(82,237)
Total property and equipment, net	165,972	164,096
Construction in Progress, Gross		6,365
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	88,449	87,999
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	54,525	47,556
Aircraft and vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	25,555	25,329
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	23,762	23,762
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	16,582	15,789
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	16,428	15,326
Tooling
Property, Plant and Equipment [Line Items]
Total property and equipment	14,212	13,754
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	10,459	9,967
Demonstration units
Property, Plant and Equipment [Line Items]
Total property and equipment	470	$ 486
Construction-in-progress (CIP)
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 13,320

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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 of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

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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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