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Property and Equipment (Tables)
3 Months Ended
Mar. 29, 2019
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and equipment consisted of the following (in thousands): 
 
March 31,
2019
 
December 31,
2018
Leasehold improvements
$
33,811

 
$
33,941

Computer equipment and software
15,110

 
15,022

Furniture and fixtures
12,908

 
12,709

Laboratory equipment
6,764

 
5,668

Construction in progress
1,231

 
866

 
69,824

 
68,206

Less: accumulated depreciation and amortization
(19,271
)
 
(17,309
)
Property and equipment, net
$
50,553

 
$
50,897