Quarterly report [Sections 13 or 15(d)]

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

v3.25.3
Note 5 - Stock Incentive Plan - Options Outstanding (Details)
 9 Months Ended
Sep. 30, 2025
$ / shares
shares
Number of shares subject to options outstanding (in shares) 600,705
Weighted-average remaining contractual term (Year) 6 years 11 months 1 day
Number of shares, exercisable (in shares) 399,040
Weighted-average remaining contractual term, exercisable (Year) 5 years 9 months 10 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) 214,826
Weighted-average remaining contractual term (Year) 6 years 2 months 19 days
Number of shares, exercisable (in shares) 178,835
Weighted-average remaining contractual term, exercisable (Year) 5 years 11 months 8 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) 362,040
Weighted-average remaining contractual term (Year) 7 years 6 months 3 days
Number of shares, exercisable (in shares) 196,368
Weighted-average remaining contractual term, exercisable (Year) 5 years 9 months 29 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) 22,614
Weighted-average remaining contractual term (Year) 4 years 2 months 23 days
Number of shares, exercisable (in shares) 22,612
Weighted-average remaining contractual term, exercisable (Year) 4 years 2 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) 4 years 4 months 2 days
Number of shares, exercisable (in shares) 1,225
Weighted-average remaining contractual term, exercisable (Year) 4 years 4 months 2 days