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Common Stock (Tables)
12 Months Ended
Dec. 31, 2017
Common Stock  
Schedule of Common Stock Reserved for Issuance

 

 

 

 

 

 

 

December 31, 

 

    

2017

    

2016

Options issued and outstanding

 

2,438,151

  

2,393,829

Options available for future grants

 

531,039

  

164,328

ESPP shares available for future grants

 

268,554

  

150,000

Total

 

3,237,744

  

2,708,157