Stockholders' Equity (Tables)
 6 Months Ended
Jun. 30, 2016
Equity [Abstract]  
Summary of Warrants Outstanding

The following table summarizes the Company’s warrants outstanding at June 30, 2016:

 

Exercise prices

    Number of Shares
Underlying Warrants		     

Expiration

$39.00

      462       April 27, 2017

$4.55

      1,256,502       July 2, 2016

$5.20

      1,300,002       June 2, 2020
  

 

 

     

Total warrants outstanding

      2,556,966