Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stock-based Compensation (Tables)

v3.19.2
Note 4 - Stock-based Compensation (Tables)
6 Months Ended
Jun. 30, 2019
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, 2019
   
June 30, 2018
   
June 30, 2019
   
June 30, 2018
 
Risk-free interest rate
 
2.31%
   
2.71%
-
2.92%
   
2.31%
   
2.65%
-
2.92%
 
Dividend yield
 
0%
   
0%
   
0%
   
0%
 
Expected term (in years)
 
5
   
5
   
5
   
5
 
Expected volatility
 
57.9%
   
49.5%
-
51.3%
   
57.9%
   
49.0%
-
51.3%
 
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 January 1, 2019
   
1,376,500
    $
0.23
 
 
   
 
 
Options granted
   
-
     
-
 
 
   
 
 
Options exercised
   
-
     
-
 
 
   
 
 
Options expired
   
(4,500
)    
0.13
 
 
   
 
 
Options forfeited
   
-
     
-
 
 
   
 
 
Outstanding at March 31, 2019
   
1,372,000
    $
0.23
 
 
   
 
 
Options granted
   
3,000
     
0.21
 
 
   
 
 
Options exercised
   
(10,000
)    
0.10
 
 
   
 
 
Options expired
   
(11,000
)    
0.08
 
 
   
 
 
Options forfeited
   
(2,500
)    
0.46
 
 
   
 
 
Outstanding at June 30, 2019
   
1,351,500
    $
0.23
 
4 years, 4 months
  $
33,783
 
Exercisable at June 30, 2019
   
1,322,500
    $
0.23
 
4 years, 3 months
  $
33,783
 
Schedule of Nonvested Share Activity [Table Text Block]
   
Nonvested
 
           
Weighted average
 
           
grant date
 
   
Shares
   
fair value
 
Nonvested at January 1, 2019
   
148,500
    $
0.20
 
Granted
   
-
     
-
 
Vested
   
(107,500
)    
0.21
 
Forfeited
   
-
     
-
 
Nonvested at March 31, 2019
   
41,000
    $
0.17
 
Granted
   
3,000
     
0.11
 
Vested
   
(12,500
)    
0.17
 
Forfeited
   
(2,500
)    
0.21
 
Nonvested at June 30, 2019
   
29,000
    $
0.16