Property and Equipment
 12 Months Ended
Dec. 31, 2015
Property Plant 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

 

Laboratory equipment

 

$

1,314

 

 

$

1,163

 

Computer equipment

 

 

350

 

 

 

260

 

Office furniture and equipment

 

 

25

 

 

 

292

 

Leasehold improvements

 

 

33

 

 

 

117

 

 

 

 

1,722

 

 

 

1,832

 

Less accumulated depreciation and amortization

 

 

(1,146

)

 

 

(1,490

)

Property and equipment, net

 

$

576

 

 

$

342

 

 

Depreciation and amortization expense for the years ended December 31, 2015, 2014, and 2013 was $192,000, $126,000, and $197,000, respectively.