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Note 9 - Share Based Payments (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
Black-Scholes-Merton |
|  | 2022 |  |  | 2021 |
Volatility |  |  | 68.7 | % |  |  | 134 | %
Expected life of options (in years) |  |  | 5 |  |  |  | 5 |
Risk-free interest rate |  |  | 4.27 | % |  |  | 0.80 | %
Dividend yield |  |  | 0 | % |  |  | 0 | %
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  |  |  |  |  | Average |  |  |  |  |
|  | Number |  |  | Weighted |  |  | Remaining |  |  | Aggregate |
|  | Of |  |  | Average |  |  | Contractual |  |  | Intrinsic |
|  | Shares |  |  | Exercise Price |  |  | Life (years) |  |  | Value* |
Shares under option, January 1, 2021 |  |  | 1,900,000 |  |  | $ | 0.21 |  |  |  | - |  |  | $ | - |
Options granted |  |  | 150,000 |  |  | $ | 0.46 |  |  |  |  |  |  |  |  |
Options exercised |  |  | (450,000 | ) |  | $ | 0.10 |  |  |  |  |  |  |  |  |
Options cancelled and expired |  |  | (150,000 | ) |  | $ | (0.51 | ) |  |  |  |  |  |  |  |
Shares under option, December 31, 2021 |  |  | 1,450,000 |  |  | $ | 0.24 |  |  |  | 5.33 |  |  |  |  |
Options granted |  |  | 1,450,000 |  |  | $ | 0.62 |  |  |  |  |  |  |  |  |
Options exercised |  |  | (410,000 | ) |  | $ | 0.10 |  |  |  |  |  |  |  |  |
Options cancelled and expired |  |  | (150,000 | ) |  | $ | (0.40 | ) |  |  |  |  |  |  |  |
Shares under option, December 31, 2022 |  |  | 2,340,000 |  |  | $ | 0.49 |  |  |  | 6.44 |  |  | $ | 248 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  | Number of |  |  | Average |
|  | Shares |  |  | Fair Value |
Non-vested stock options at January 1, 2021 |  |  | 83,334 |  |  | $ | 0.47 |
Options granted |  |  | 150,000 |  |  | $ | 0.46 |
Vested during period |  |  | (83,834 | ) |  | $ | (0.47 | )
Options cancelled |  |  | - |  |  | $ | - |
Non-vested shares under option, December 31, 2021 |  |  | 150,000 |  |  | $ | 0.46 |
Options granted |  |  | 1,450,000 |  |  | $ | 0.41 |
Vested during period |  |  | (50,000 | ) |  | $ | (0.59 | )
Options cancelled |  |  | - |  |  | $ | - |
Non-vested shares under option, December 31, 2022 |  |  | 1,550,000 |  |  | $ | 0.42 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |
|  |  |  |  |  | Weighted |  |  |  |  |  |  |  |
|  |  |  |  |  | Average |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Remaining |  |  | Average |  |  | Aggregate |
|  |  |  |  |  | Contractual |  |  | Exercise |  |  | Intrinsic |
|  | Options |  |  | Life (years) |  |  | Price |  |  | Value |
Stock options exercisable |  |  | 790,000 |  |  |  | 8.08 |  |  | $ | 0.25 |  |  | $ | 248 |
Stock options expected to vest |  |  | 1,550,000 |  |  |  | 9.77 |  |  | $ | 0.62 |  |  | $ | - |
Options exercisable and expected to vest |  |  | 2,340,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Number of |  |  | Grant Date |
|  | Shares |  |  | Fair Value |
Unvested January 1, 2021 |  |  | 1,720,333 |  |  | $ | 0.89 |
Granted restricted stock |  |  | 10,000 |  |  | $ | 0.85 |
Cancelled restricted stock |  |  | (49,000 | ) |  | $ | (0.65 | )
Vested restricted stock |  |  | (781,333 | ) |  | $ | (0.91 | )
Unvested December 31, 2021 |  |  | 900,000 |  |  | $ | 0.88 |
Granted restricted stock |  |  | 505,000 |  |  | $ | 0.48 |
Cancelled restricted stock |  |  | (186,000 | ) |  | $ | (0.65 | )
Vested restricted stock |  |  | (618,333 | ) |  | $ | (0.89 | )
Unvested December 31, 2022 |  |  | 600,667 |  |  | $ | 0.62 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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