Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Stock-based Compensation (Tables)

v3.19.1
Note 10 - Stock-based Compensation (Tables)
 3 Months Ended
Mar. 31, 2019
Notes Tables  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Option numbers are in (000’s)                        
              Three months ended
March 31, 2019		        Weighted
average		  
     
Options
      
Weighted
average
exercise price
       remaining
contractual
life (years)		  
                         
Outstanding, beginning of period    
4,489
     $
3.11
      
 
  
Granted    
1,414
      
1.91
      
 
  
Forfeited    
(119
 )    
2.67
      
 
  
Outstanding, end of the period    
5,784
      
2.86
      
8.1
  
Exercisable, end of the period    
3,237
      
3.33
      
7.2
  
Vested and expected to vest, end of period    
5,400
      
2.90
      
8.0
  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
     
Three months ended

March 31, 2019
      
Three months ended

March 31, 2018
  
                 
Risk-free interest rate    
2.41
 %    
2.39
 %
Expected dividend yield    
–
      
–
  
Expected volatility    
84.0
 %    
93.9
 %
Expected life of options (in years)    
5
      
5
  
Grant date fair value   $
1.29
     $
2.14
  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
     
Three months ended

March 31, 2019
      
Three months ended

March 31, 2018
  
                 
Research and development   $
118
     $
367
  
General and administrative    
544
      
1,861
  
Total   $
662
     $
2,228