Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Common Stock (Tables)

v3.10.0.1
Note 8 - Common Stock (Tables)
6 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
   
 
 
 
 
 
 
 
 
Number of
 
   
 
 
 
 
 
 
 
 
Shares
 
   
 
 
 
 
 
 
 
 
Outstanding
 
   
Exercisable
 
Expiration
 
Exercise
   
Under
 
Issuance Date
 
for
 
Date
 
Price
   
Warrants
 
                         
September 2014
 
Common Shares
 
September 23, 2019
  $
4.24
     
86,831
 
October 2014
 
Common Shares
 
October 13, 2019
  $
4.24
     
29,000
 
November 2014
 
Common Shares
 
November 12, 2019
  $
4.24
     
12,500
 
February 2015
 
Common Shares
 
February 17, 2025
  $
4.00
     
75,697
 
March 2015
 
Common Shares
 
March 26, 2025
  $
2.72
     
1,454
 
May 2015
 
Common Shares
 
May 12, 2025
  $
4.24
     
36,229
 
May 2015
 
Common Shares
 
May 17, 2020
  $
4.24
     
21,585
 
December 2015
 
Common Shares
 
December 16, 2025
  $
5.60
     
26,875
 
April 2016
 
Common Shares
 
April 1, 2026
  $
6.08
     
25,000
 
May 2016
 
Common Shares
 
May 11, 2021
  $
7.74
     
5,000
 
June 2016
 
Common Shares
 
June 20, 2026
  $
4.98
     
100,402
 
May 2017
 
Common Shares
 
May 25, 2027
  $
9.50
     
222,049
 
   
 
 
 
   
 
     
642,622