XML 60 R49.htm IDEA: XBRL DOCUMENT v3.20.2
Note 7 - Stockholders' Equity - Status of Options and Changes During the Year (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Outstanding, shares (in shares) 25,000  
Outstanding, weighted average exercise price (in dollars per share) $ 2.96  
Outstanding, average remaining life (Year) 1 month 13 days 7 months 13 days
Outstanding, weighted average intrinsic value $ 62,500 $ 72,250
Granted, shares (in shares) 0  
Granted, weighted average exercise price (in dollars per share) $ 0  
Exercised, shares (in shares) 0  
Exercised, weighted average exercise price (in dollars per share) $ 0  
Forfeited, shares (in shares) 0  
Forfeited, weighted average exercise price (in dollars per share) $ 0  
Expired, shares (in shares) 0  
Expired, weighted average exercise price (in dollars per share) $ 0  
Outstanding, shares (in shares) 25,000 25,000
Outstanding, weighted average exercise price (in dollars per share) $ 2.96 $ 2.96
Vested and expected to vest, shares (in shares) 25,000  
Vested and expected to vest, weighted average exercise price (in dollars per share) $ 2.96  
Vested and expected to vest, average remaining life (Year) 1 month 13 days  
Vested and expected to vest, weighted average intrinsic value $ 62,500  
Exercisable end of period, shares (in shares) 25,000  
Exercisable end of period, weighted average exercise price (in dollars per share) $ 2.96  
Exercisable end of period, average remaining life (Year) 1 month 13 days  
Exercisable end of period, weighted average intrinsic value $ 62,500