Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stock-based Compensation (Tables)

v3.20.2
Note 4 - Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   
Three Months
Ended
   
Three Months
Ended
   
Six Months
Ended
   
Six Months
Ended
 
   
June 30, 2020
   
June 30, 2019
   
June 30, 2020
   
June 30, 2019
 
Risk-free interest rate
 
 
0.33%
 
   
2.31%
   
 
0.33%
 
   
2.31%
 
Dividend yield
 
 
0%
 
   
0%
   
 
0%
 
   
0%
 
Expected term (in years)
 
 
5
 
   
5
   
 
5
 
   
5
 
Expected volatility
 
 65.8%
-
 66.0%
   
57.9%
   
 65.8%
-
 66.0%
   
57.9%
 
Share-based Payment Arrangement, Option, Activity [Table Text Block]
   
Options outstanding
           
           
Weighted average
 
Weighted average
 
Aggregate
 
           
exercise price
 
remaining
 
intrinsic
 
Incentive Options
 
Shares
   
per share
 
contractual term
 
value
 
Outstanding at December 31, 2019
   
1,349,000
    $
0.23
 
 
   
 
 
Options granted
   
-
     
-
 
 
   
 
 
Options exercised
   
-
     
-
 
 
   
 
 
Options expired
   
(129,000
)    
0.17
 
 
   
 
 
Options forfeited
   
-
     
-
 
 
   
 
 
Outstanding at March 31, 2020
   
1,220,000
    $
0.24
 
 
   
 
 
Options granted
   
10,000
     
0.15
 
 
   
 
 
Options exercised
   
-
     
-
 
 
   
 
 
Options expired
   
(10,000
)    
0.19
 
 
   
 
 
Options forfeited
   
-
     
-
 
 
   
 
 
Outstanding at June 30, 2020
   
1,220,000
    $
0.24
 
3 years, 9 months
  $
37,353
 
Exercisable at June 30, 2020
   
1,207,000
    $
0.24
 
3 years, 8 months
  $
36,703
 
Schedule of Nonvested Share Activity [Table Text Block]
   
Nonvested
 
           
Weighted average
 
           
grant date
 
   
Shares
   
fair value
 
Nonvested at January 1, 2020
   
23,500
    $
0.17
 
Granted
   
-
     
-
 
Vested
   
(5,000
)    
0.21
 
Forfeited
   
-
     
-
 
Nonvested at March 31, 2020
   
18,500
    $
0.15
 
Granted
   
10,000
     
0.08
 
Vested
   
(15,500
)    
0.16
 
Forfeited
   
-
     
-
 
Nonvested at June 30, 2020
   
13,000
    $
0.09