Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation (Tables)

v3.20.2
Note 12 - Share-based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   
Three Months Ended
June 30
   
Six Months Ended
June 30
 
   
2020
   
2019
   
2020
   
2019
 
Research and development
  $
131
    $
67
    $
238
    $
125
 
General and administrative
   
305
     
115
     
591
     
187
 
Total share-based compensation
  $
436
    $
182
    $
829
    $
312
 
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   
Shares
Underlying
Options
Outstanding
   
Weighted
Average Exercise
Price Per Share
   
Aggregate
Intrinsic Value
 
Balances at December 31, 2019
   
1,220,359
    $
5.26
    $
 
Granted
   
267,332
     
4.75
     
 
 
Exercised
   
(7,200
)    
2.21
     
 
 
Expired/cancelled
   
(66,505
)    
5.04
     
 
 
Forfeited
   
     
     
 
 
Balances at June 30, 2020
   
1,413,988
    $
5.19
    $
3,191
 
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
       
Outstanding, Vested and Expected to Vest
   
Options Vested and Exercisable
 
Per Share Exercise Price
 
Shares
   
Weighted Average
Remaining
Contractual Life
(Years)
   
Weighted Average
Exercise Price
   
Options
Exercisable
   
Weighted Average
Remaining
Contractual Life
(Years)
 
$2.00
-
$2.99
   
125,700
     
5.5
    $
2.24
     
125,700
     
5.5
 
$3.00
-
$3.99
   
98,572
     
6.5
     
3.81
     
98,572
     
6.5
 
$4.00
-
$4.99
   
951,791
     
9.0
     
4.56
     
399,541
     
8.5
 
$5.00
-
$10.00
   
187,775
     
7.4
     
7.35
     
112,009
     
7.6
 
$10.01
-
$34.00
   
50,150
     
2.4
     
17.81
     
50,150
     
2.4
 
 
 
 
   
1,413,988
     
8.1
    $
5.19
     
785,972
     
7.3