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Common Stock Warrants and Common Stock Warrant Liability (Tables)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Warrants and Rights Note Disclosure [Abstract]    
Schedule of common stock warrant activity

Common Stock Warrants  Number
of
Warrants
   Date
Issued
  Term  Exercise Price 
               
Outstanding at December 31, 2017   321,590            
                 
Warrants issued   56,696   June 2018  5 Years  $36.40 
Common Stock Offering Warrants Issued   267,853   August 2018  5 Years  $23.00(1)
Common Stock Offering - Dealer Manager Warrants   13,393   August 2018  5 Years  $34.50 
Warrants exercised   (73,783)           
Expired Warrants   (24,406)           
Outstanding at December 31, 2018   561,343            
Warrants issued   8,334   July 2019  5 Years  $33.75 
Warrants Exercised   (64,901)  August 2018     $23.00 
Warrants Exercised   (15,600)  August 2018     $19.00 
Outstanding at September 30, 2019   489,176            

 

  (1) The common stock warrants issued in November 2017 with an initial exercise price of $30.00 per share adjusted downward to $19.00 per share effective July 24, 2018 in connection with our Rights Offering, and may be subject to further downward adjustments, pursuant to antidilution price adjustment protection contained within those warrants.

Common Stock Warrants  Number
 of
Warrants
   Date
Issued
  Term  Exercise Price 
               
Outstanding at December 31, 2016   41,465            
                 
Common Stock Offering Warrants Issued   232,875   November 2017  5 years  $30.00(1)
Common Stock Offering Underwriter Warrants   47,250   November 2017  5 years  $30.00 
Outstanding at December 31, 2017   321,590            
                 
Warrants issued   56,696   June 2018  5 Years  $36.40 
Common Stock Offering Warrants Issued   267,853   August 2018  5 Years  $23.00(1)
Common Stock Offering - Dealer Manager Warrants   13,393   August 2018  5 Years  $34.50 
Warrants exercised   (73,783)           
Expired Warrants   (24,406)           
Outstanding at December 31, 2018   561,343            

 

(1) The Common Stock warrants issued in November 2017 with an initial exercise price of $30.00 per share adjusted downward to $19.00 per share effective July 24, 2018 in connection with our Rights Offering, and may be subject to further downward adjustments, pursuant to antidilution price adjustment protection contained within those warrants.