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v3.24.1

Schedule of Stock Option Activity (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Equity Incentive Plans 2009 [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of options outstanding, beginning of year | 124,399 | 128,504
Weighted average exercise price outstanding, beginning of year | $ 22.23 | $ 25.58
Number of options, granted |  |
Option price, granted |  |
Weighted average exercise price, granted |  |
Number of options, forfeited | (5,047) | (4,105)
Weighted average exercise price, forfeited | $ 57.79 | $ 129.88
Number of options, exercised |  |
Option price, exercised |  |
Weighted average exercise price, exercised |  |
Number of options outstanding, ending of year | 119,352 | 124,399
Weighted average exercise price outstanding, end of year | $ 20.72 | $ 22.23
Number of options exercisable, end of year | 119,352 | 124,399
Weighted average remaining contractual life (years) | 4 years 21 days | 5 years 11 months 23 days
Equity Incentive Plans 2009 [Member] | Minimum [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Option price outstanding, beginning of year | $ 13.20 | $ 13.20
Option price, forfeited | 9.68 | 16.76
Option price exercisable, end of year | 13.20 | 13.20
Option price exercisable, end of year | 13.20 | 13.20
Equity Incentive Plans 2009 [Member] | Maximum [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Option price outstanding, beginning of year | 1,003.20 | 2,127.84
Option price, forfeited | 327.36 | 2,127.84
Option price exercisable, end of year | 2,127.84 | 1,003.20
Option price exercisable, end of year | $ 2,127.84 | $ 1,003.20
Equity Incentive Plans 2018 [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Number of options outstanding, beginning of year | 2,474,971 | 1,650,017
Weighted average exercise price outstanding, beginning of year | $ 1.72 | $ 2.35
Number of options, granted | 400,000 | 850,000
Weighted average exercise price, granted | $ 0.47 | $ 0.51
Number of options, forfeited | (60,829) | (25,046)
Weighted average exercise price, forfeited | $ 1.98 | $ 1.86
Number of options, exercised |  |
Option price, exercised |  |
Weighted average exercise price, exercised |  |
Number of options outstanding, ending of year | 2,814,142 | 2,474,971
Weighted average exercise price outstanding, end of year | $ 1.54 | $ 1.72
Number of options exercisable, end of year | 2,397,474 | 1,916,637
Weighted average remaining contractual life (years) | 7 years 11 months 15 days | 9 years 7 months 24 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ 4.71 | $ 2.22
Number of options outstanding, beginning of year | 1,210,286 | 466,120
Equity Incentive Plans 2018 [Member] | Minimum [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Option price outstanding, beginning of year | $ 0.31 | $ 1.11
Option price, forfeited | 0.31 | 1.85
Option price exercisable, end of year | 0.31 | 0.31
Option price exercisable, end of year | 0.31 | 0.41
Option price, granted | 0.47 | 0.31
Equity Incentive Plans 2018 [Member] | Maximum [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |
Option price outstanding, beginning of year | 9.68 | 9.68
Option price, forfeited | 9.68 | 9.68
Option price exercisable, end of year | 9.68 | 9.68
Option price exercisable, end of year | 327.36 | 9.68
Option price, granted | $ 0.47 | $ 1.71

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