Annual report [Section 13 and 15(d), not S-K Item 405]

Note 5 - Stock Incentive Plan - Options Outstanding (Details)

v3.25.1
Note 5 - Stock Incentive Plan - Options Outstanding (Details)
 12 Months Ended
Dec. 31, 2024
$ / shares
shares
Number of shares subject to options outstanding (in shares) 428,915
Weighted-average remaining contractual term (Year) 5 years 9 months 14 days
Number of shares, exercisable (in shares) 339,881
Weighted-average remaining contractual term, exercisable (Year) 5 years 1 month 6 days
Price Range 1 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 0
Upper exercise price (in dollars per share) | $ / shares $ 25
Number of shares subject to options outstanding (in shares) 282,170
Weighted-average remaining contractual term (Year) 6 years 5 months 15 days
Number of shares, exercisable (in shares) 195,469
Weighted-average remaining contractual term, exercisable (Year) 5 years 6 months 21 days
Price Range 2 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 25.01
Upper exercise price (in dollars per share) | $ / shares $ 50
Number of shares subject to options outstanding (in shares) 122,908
Weighted-average remaining contractual term (Year) 4 years 5 months 4 days
Number of shares, exercisable (in shares) 120,575
Weighted-average remaining contractual term, exercisable (Year) 4 years 4 months 20 days
Price Range 3 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 50.01
Upper exercise price (in dollars per share) | $ / shares $ 75
Number of shares subject to options outstanding (in shares) 22,612
Weighted-average remaining contractual term (Year) 4 years 11 months 23 days
Number of shares, exercisable (in shares) 22,612
Weighted-average remaining contractual term, exercisable (Year) 4 years 11 months 23 days
Price Range 4 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 75.01
Upper exercise price (in dollars per share) | $ / shares $ 100
Number of shares subject to options outstanding (in shares) 1,225
Weighted-average remaining contractual term (Year) 5 years 29 days
Number of shares, exercisable (in shares) 1,225
Weighted-average remaining contractual term, exercisable (Year) 5 years 29 days