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Property and Equipment
12 Months Ended
Dec. 31, 2017
Property and Equipment  
Property and Equipment

7. Property and Equipment

        Property and equipment consist of the following (in thousands):

                                                                                                                                                                                    

 

 

December 31,

 

 

 

2017

 

2016

 

Property and equipment consist of the following:

 

 

 

 

 

 

 

Computer equipment

 

$

3,746

 

$

3,511

 

Computer software

 

 

1,236

 

 

1,347

 

Research equipment

 

 

6,379

 

 

7,465

 

Furniture and fixtures

 

 

2,992

 

 

3,018

 

Leasehold improvements

 

 

7,193

 

 

6,970

 

Construction in progress

 

 

31

 

 

 

​  

​  

​  

​  

 

 

 

21,577

 

 

22,311

 

Less accumulated depreciation

 

 

(12,515

)

 

(12,495

)

​  

​  

​  

​  

 

 

$

9,062

 

$

9,816

 

​  

​  

​  

​  

​  

​  

​  

​  

        Depreciation expense was $3.6 million and $3.2 million for the years ended December 31, 2017 and 2016, respectively, and includes depreciation expenses related to capital lease obligations.