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Stock Based Compensation
3 Months Ended
Mar. 31, 2016
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Stock Based Compensation

15. Stock Based Compensation

Total stock-based compensation recorded related to option granted to employees and nonemployees was as follows (in thousands):

 

 

 

 

 

 

 

March 31,

 

 

 

2016

 

 

2015

 

Stock-based compensation expense:

 

 

 

 

 

 

 

 

Research and development

 

$

1,349

 

 

$

79

 

General and administrative

 

 

1,172

 

 

 

96

 

Total stock-based compensation expense

 

$

2,521

 

 

$

175