Annual report pursuant to Section 13 and 15(d)

Note 14 - Share-based Compensation - Stock Option Activity (Details)

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Note 14 - Share-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Granted (in shares) 725,825    
Exercised (in shares)   (16,954)  
Share-based Payment Arrangement, Option [Member]      
Balance (in shares) 639,359 480,035  
Balance, weighted average exercise price (in dollars per share) $ 6.07 $ 4.98  
Balance, aggregate intrinsic value $ 678 $ 508
Granted (in shares) 725,825 196,800  
Granted, weighted average exercise price (in dollars per share) $ 4.52 $ 8.55  
Exercised (in shares) (50,000) (16,954)  
Exercised, weighted average exercise price (in dollars per share) $ 1.50 $ 2.54  
Expired/cancelled (in shares) (7,353)  
Expired / cancelled, weighted average exercise price (in dollars per share) $ 5.49  
Forfeited (in shares) (87,472) (20,522)  
Forfeited, weighted average exercise price (in dollars per share) $ 5.22 $ 6.94  
Balance (in shares) 1,220,359 639,359  
Balance, weighted average exercise price (in dollars per share) $ 5.33 $ 6.07