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Equity (Tables)
3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Information about Warrants Outstanding
Information about warrants outstanding during the three months ended March 31, 2018 follows:

Original
Number
of
Warrants
Issued
  
Exercise
Price per
Common
Share
  
Exercisable at
December 31,
2017
  
Became
Exercisable
  
Exercised
  
Terminated /
Cancelled /
Expired
  
Exercisable
at March 31,
2018
 
Expiration
Date
 
25,000
  
$
7.00
   
25,000
   
   
   
   
25,000
 
April 2020
         
25,000
   
   
   
   
25,000