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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2017
Property Plant And Equipment [Abstract]  
Property and Equipment and Related Accumulated Depreciation and Amortization

Property and equipment and related accumulated depreciation and amortization are as follows (in thousands):

 

 

 

2017

 

 

2016

 

Lab equipment

 

$

36,533

 

 

$

34,727

 

Computer equipment

 

 

11,808

 

 

 

11,534

 

Software

 

 

10,694

 

 

 

5,429

 

Furniture and office equipment

 

 

3,959

 

 

 

3,638

 

Leasehold improvements

 

 

26,968

 

 

 

24,730

 

Construction in progress

 

 

7,523

 

 

 

4,512

 

Total cost

 

 

97,485

 

 

 

84,570

 

Less: accumulated depreciation and amortization

 

 

(56,366

)

 

 

(43,084

)

Total property and equipment, net

 

$

41,119

 

 

$

41,486