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Property and Equipment
12 Months Ended
Dec. 31, 2015
Property and Equipment [Abstract]  
Property and Equipment

4.   Property and Equipment

 

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

 

  As of December 31, 
  2015  2014 
       
Computers, software, furniture and fixtures $637  $546 
Equipment under capital lease  428   458 
Less accumulated depreciation and amortization  (471)  (350)
Property and equipment, net $594  $654 

 

Depreciation and amortization expense was $187,000, $202,000 and $144,000 for the years ended December 31, 2015, 2014 and 2013, respectively.