XML 40 R29.htm IDEA: XBRL DOCUMENT v3.22.2
Note 5 - Share-based Compensation - Stock Option Activity (Details) - USD ($)
 3 Months Ended 6 Months Ended
Dec. 31, 2021
Mar. 31, 2022
Jun. 30, 2022
Outstanding, shares (in shares)   4,774,215 4,774,215
Outstanding, weighted average exercise price (in dollars per share)   $ 3.04 $ 3.04
Weighted-average remaining contractual term, outstanding (Year) 6 years 1 month 20 days   6 years 2 months 12 days
Aggregate intrinsic value, outstanding $ 8,413,444   $ 4,113,421
Granted, shares (in shares)     865,825
Granted, weighted average exercise price (in dollars per share)     $ 4.43
Exercised, shares (in shares)     (35,000)
Exercised, weighted average exercise price (in dollars per share)     $ 1.21
Expired, shares (in shares)     (30,000)
Expired, weighted average exercise price (in dollars per share)     $ 6.87
Canceled, shares (in shares)   (75,000)  
Canceled, weighted average exercise price (in dollars per share)   $ 4.81  
Outstanding, shares (in shares) 4,774,215   5,500,040
Outstanding, weighted average exercise price (in dollars per share) $ 3.04   $ 3.23
Exercisable, shares (in shares)     4,070,223
Exercisable, weighted average exercise price (in dollars per share)     $ 2.79
Weighted-average remaining contractual term, exercisable (Year)     5 years 2 months 26 days
Aggregate intrinsic value, exercisable     $ 3,937,808