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Property and Equipment - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 246,333	$ 204,229
Accumulated depreciation and amortization	(82,237)	(68,233)
Total property and equipment, net	164,096	135,996
Construction in Progress, Gross		7,923
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	87,999	85,966
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	47,556	41,683
Aircraft and vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	25,329	45
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	15,789	13,549
Tooling
Property, Plant and Equipment [Line Items]
Total property and equipment	13,754	12,895
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	15,326	8,289
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	9,967	9,669
Demonstration units
Property, Plant and Equipment [Line Items]
Total property and equipment	486	$ 448
Construction-in-progress (CIP)
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 6,365

X

- Definition

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

+ References

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-Publisher FASB
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- Definition

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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