Quarterly report [Sections 13 or 15(d)]

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

v3.26.1
Note 5 - Stock Incentive Plan - Options Outstanding (Details)
 6 Months Ended
Jun. 30, 2026
$ / shares
shares
Number of shares subject to options outstanding (in shares) 678,293
Number of shares, exercisable (in shares) 454,412
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) 206,725
Weighted-average remaining contractual term (Year) 5 years 4 months 9 days
Number of shares, exercisable (in shares) 191,472
Weighted-average remaining contractual term, exercisable (Year) 5 years 2 months 19 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) 331,109
Weighted-average remaining contractual term (Year) 6 years 5 months 1 day
Number of shares, exercisable (in shares) 227,452
Weighted-average remaining contractual term, exercisable (Year) 5 years 4 months 17 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) 87,166
Weighted-average remaining contractual term (Year) 8 years 1 month 9 days
Number of shares, exercisable (in shares) 22,691
Weighted-average remaining contractual term, exercisable (Year) 3 years 7 months 17 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) 49,293
Weighted-average remaining contractual term (Year) 9 years 1 month 28 days
Number of shares, exercisable (in shares) 12,130
Weighted-average remaining contractual term, exercisable (Year) 8 years 3 months 10 days
Price Range 5 [Member]  
Lower exercise price (in dollars per share) | $ / shares $ 100.01
Upper exercise price (in dollars per share) | $ / shares $ 125
Number of shares subject to options outstanding (in shares) 4,000
Weighted-average remaining contractual term (Year) 9 years 3 months 14 days
Number of shares, exercisable (in shares) 667