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Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2017
Equity [Abstract]  
Schedule of Warrant Activity

As of September 30, 2017, there were 2,492,945 warrants outstanding, with a weighted average exercise price of $4.40 per share, and annual expirations as follows:

 

Expiring in 2017     -  
Expiring in 2018     11,383  
Expiring in 2019     600,000  
Expiring in 2020     1,189,079  
Expiring in 2021     343,750  
Expiring thereafter     348,733  
      2,492,945