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Property and Equipment
12 Months Ended
Dec. 31, 2016
Property and Equipment  
Property and Equipment

7. Property and Equipment

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

                                                                                                                                                                                    

 

 

December 31,

 

 

 

2016

 

2015

 

Property and equipment consist of the following:

 

 

 

 

 

 

 

Computer equipment

 

$

3,511

 

$

5,075

 

Computer software

 

 

1,347

 

 

1,354

 

Research equipment

 

 

7,465

 

 

6,483

 

Furniture and fixtures

 

 

3,018

 

 

2,444

 

Leasehold improvements

 

 

6,970

 

 

4,175

 

​  

​  

​  

​  

 

 

 

22,311

 

 

19,531

 

Less accumulated depreciation

 

 

(12,495

)

 

(13,353

)

​  

​  

​  

​  

 

 

$

9,816

 

$

6,178

 

​  

​  

​  

​  

​  

​  

​  

​  

        Depreciation expense was $3.2 million and $1.8 million for the years ended December 31, 2016 and 2015, respectively. As of December 31, 2016, $0.2 million of the depreciation expense was related to capital lease obligation. There were no capital lease obligations outstanding as of December 31, 2015.