Note 5 - Stock Incentive Plan - Option Activity (Details) - $ / shares |
9 Months Ended | ||||||||
---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 |
Jun. 30, 2024 |
Jan. 01, 2024 |
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Balances (in shares) | 428,915 | 421,820 | |||||||
Balances, exercise price (in dollars per share) | $ 19.35 | $ 20.06 | |||||||
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | [1] | 43,523 | |||||||
Granted, exercise price (in dollars per share) | [1] | $ 3.42 | |||||||
Forfeited(2) (in shares) | [2] | (19,628) | |||||||
Forfeited, exercise price (in dollars per share) | [2] | $ 15.88 | |||||||
Exercised, options (in shares) | (16,800) | ||||||||
Exercised, exercise price (in dollars per share) | $ 0.005 | ||||||||
Unvested options outstanding expected to vest(3) (in shares) | [3] | 104,425 | |||||||
Unvested options outstanding expected to vest(3), exercise price (in dollars per share) | [3] | $ 11.38 | |||||||
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