Property and Equipment - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 332,654	$ 263,762
Accumulated depreciation	(113,102)	(97,790)
Property and equipment, net	219,552	165,972
Building and building improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	101,731	88,449
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	58,864	54,525
Land
Property, Plant and Equipment [Line Items]
Total property and equipment	40,216	23,762
Aircraft and vehicles
Property, Plant and Equipment [Line Items]
Total property and equipment	29,934	25,555
Computer equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	19,650	16,582
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	15,921	16,428
Tooling
Property, Plant and Equipment [Line Items]
Total property and equipment	15,346	14,212
Furniture and office equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	11,049	10,459
Demonstration units
Property, Plant and Equipment [Line Items]
Total property and equipment	836	470
Construction-in-progress (CIP)
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 39,107	$ 13,320