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)
 3 Months Ended
Mar. 31, 2026
$ / shares
shares
Number of shares subject to options outstanding (in shares) 678,263
Weighted-average remaining contractual term (Year) 7 years
Number of shares, exercisable (in shares) 431,255
Weighted-average remaining contractual term, exercisable (Year) 5 years 8 months 26 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) 207,331
Weighted-average remaining contractual term (Year) 5 years 9 months 3 days
Number of shares, exercisable (in shares) 186,753
Weighted-average remaining contractual term, exercisable (Year) 5 years 7 months 2 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) 331,364
Weighted-average remaining contractual term (Year) 7 years 7 days
Number of shares, exercisable (in shares) 217,640
Weighted-average remaining contractual term, exercisable (Year) 6 years
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) 85,366
Weighted-average remaining contractual term (Year) 8 years 4 months 13 days
Number of shares, exercisable (in shares) 21,982
Weighted-average remaining contractual term, exercisable (Year) 3 years 10 months 13 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) 50,202
Weighted-average remaining contractual term (Year) 9 years 6 months 10 days
Number of shares, exercisable (in shares) 4,880
Weighted-average remaining contractual term, exercisable (Year) 8 years 2 months 15 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 6 months 14 days
Number of shares, exercisable (in shares) 0