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Note 14 - Stock-based Compensation - Summary of Outstanding Options (Details)
 12 Months Ended
Dec. 31, 2023
USD ($)
$ / shares
shares
Outstanding (in shares) | shares 802,163
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 12.23
Exercised (in shares) | shares (576,758)
Exercised, weighted average exercise price (in dollars per share) | $ / shares $ 5.9
Expired/Forfeited (in shares) | shares (1,999)
Expired/Forfeited, weighted average exercise price (in dollars per share) | $ / shares $ 15.3
Outstanding (in shares) | shares 223,406
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 28.52
Outstanding, weighted average remaining contractual life (Year) 2 years 2 months 12 days
Outstanding, aggregate intrinsic value | $ $ 2,502,824
Exercisable (in shares) | shares 178,790
Exercisable, weighted average exercise price (in dollars per share) | $ / shares $ 26.31
Exercisable, weighted average remaining contractual life (Year) 2 years 1 month 6 days
Exercisable, aggregate intrinsic value | $ $ 2,366,192