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Property and Equipment
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Property and Equipment

Property and equipment are stated at cost, less accumulated depreciation, and consist of the following as of December 31, 2018 and 2017 (in thousands):

 

    December 31,  
    2018       2017  
Computer equipment and software   $ 7,143     $ 6,935  
Furniture and office equipment     142       142  
Leasehold improvements     348       348  
Construction in progress            
      7,633       7,425  
Accumulated depreciation     (6,930 )     (6,292  
    $ 703     $ 1,133  

 

Depreciation expense was $638,000 and $628,000 for the years ended December 31, 2018 and 2017, respectively.