Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Share-based Compensation - Stock Option Activity (Details)

v3.21.2
Note 12 - Share-based Compensation - Stock Option Activity (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Exercised (in shares) (40,000) (7,200)  
Exercised, aggregate intrinsic value $ 132,000    
Share-based Payment Arrangement, Option [Member]      
Balance (in shares) 1,389,568    
Balance, weighted average exercise price (in dollars per share) $ 5.38    
Balance, aggregate intrinsic value $ 0   $ 7,109,000
Granted (in shares) 85,000    
Granted, weighted average exercise price (in dollars per share) $ 9.69    
Exercised (in shares) (40,000)    
Exercised, weighted average exercise price (in dollars per share) $ 6.11    
Exercised, aggregate intrinsic value $ 132,000    
Expired/cancelled (in shares) (13,476)    
Expired / cancelled, weighted average exercise price (in dollars per share) $ 6.54    
Balance (in shares) 1,421,092    
Balance, weighted average exercise price (in dollars per share) $ 5.63