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Property and Equipment
12 Months Ended
Dec. 29, 2018
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
Property and equipment, net consists of the following (in thousands):
 
December 29,
2018
 
December 30,
2017
Building and building improvements
$
88,449

 
$
87,999

Machinery and equipment
54,525

 
47,556

Aircraft and vehicles
25,555

 
25,329

Land
23,762

 
23,762

Computer equipment
16,582

 
15,789

Leasehold improvements
16,428

 
15,326

Tooling
14,212

 
13,754

Furniture and office equipment
10,459

 
9,967

Demonstration units
470

 
486

Construction-in-progress (CIP)
13,320

 
6,365

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


The balance in CIP at December 29, 2018 relates primarily to capitalized costs related to the implementation of a new enterprise resource planning (ERP) software system, capital improvements to various facilities and manufacturing equipment, the underlying assets for which have not been completed or placed into service. The balance in CIP at December 30, 2017 related primarily to capitalized costs related to leasehold improvements, furniture and equipment for a new manufacturing facility in Irvine, California, as well as other manufacturing equipment, the majority of which was placed into service during the year ended December 29, 2018.