v3.22.2.2
Note 6 - Stock-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2022
Outstanding, shares (in shares) 1,306,824
Outstanding, weighted average exercise price (in dollars per share) $ 6.87
Granted, shares (in shares) 11,500
Granted, weighted average exercise price (in dollars per share) $ 4.49
Exercised, shares (in shares) (59,500)
Exercised, weighted average exercise price (in dollars per share) $ 3.82
Forfeited or expired, shares (in shares) (56,748)
Forfeited or expired, weighted average exercise price (in dollars per share) $ 6.63
Outstanding, shares (in shares) 1,202,076
Outstanding, weighted average exercise price (in dollars per share) $ 7.01
Outstanding, weighted average remaining contractual term (Year) 3 years 9 months 21 days
Outstanding, aggregate intrinsic value $ 70
Vested and expected to vest, shares (in shares) 1,119,892
Vested and expected, weighted average exercise price (in dollars per share) $ 7.04
Vested and expected to vest, weighted average remaining contractual term (Year) 3 years 8 months 1 day
Vested and expected to vest, aggregate intrinsic value $ 70
Exercisable, shares (in shares) 803,774
Exercisable, weighted average exercise price (in dollars per share) $ 7.22
Exercisable, weighted average remaining contractual term (Year) 2 years 9 months 25 days
Exercisable, aggregate intrinsic value $ 67