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Property and Equipment (Tables)
12 Months Ended
Jan. 02, 2016
Property, Plant and Equipment [Abstract]  
Components of Property and Equipment
Property and equipment are stated at cost. Depreciation is calculated using the straight-line method over estimated useful lives as follows:
 
Useful Lives
Building
39 years
Building improvements
7 to 10 years
Leasehold improvements
Lesser of useful life or term of lease
Machinery and equipment
5 years
Vehicles
5 years
Tooling
3 years
Computer equipment
2 to 6 years
Furniture and office equipment
2 to 6 years
Demonstration units
3 years
Property and equipment, net consists of the following (in thousands):
 
January 2,
2016
 
January 3,
2015
Building and building improvements
$
78,877

 
$
30,678

Machinery and equipment
42,460

 
38,588

Land
23,738

 
22,894

Computer equipment
15,023

 
13,035

Tooling
13,079

 
12,317

Leasehold improvements
7,734

 
9,912

Furniture and office equipment
8,885

 
4,864

Demonstration units
973

 
972

Vehicles
45

 
45

Construction-in-progress
7,124

 
25,731

     Total property and equipment
197,938

 
159,036

Accumulated depreciation and amortization
(65,472
)
 
(57,084
)
     Total
$
132,466

 
$
101,952