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Note J - Stock Option Plans (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Options |  |  | Weighted Averaged Exercise Price $ |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Aggregate Intrinsic Options Value $ |
Options outstanding January 1, 2022 |  |  | 2,843,693 |  |  |  | 2.39 |  |  |  | 7.69 |  |  |  | 49,246 |
Granted during 2022 |  |  | 216,296 |  |  |  | 1.52 |  |  |  | 2.23 |  |  |  | - |
Exercised during 2022 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Forfeited or expired during 2022 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Options outstanding December 31, 2022 |  |  | 3,059,989 |  |  |  | 2.36 |  |  |  | 6.38 |  |  |  | - |
Exercisable, December 31, 2022 |  |  | 1,026,987 |  |  |  | 2.18 |  |  |  | 4.93 |  |  |  | - |
|  | Number of Options |  |  | Weighted Averaged Exercise Price $ |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Aggregate Intrinsic Options Value $ |
Options outstanding January 1, 2022 |  |  | 83,330 |  |  |  | 1.85 |  |  |  | 3.33 |  |  |  | 49,748 |
Granted during 2022 |  |  | 8,333 |  |  |  | 0.73 |  |  |  | 4.80 |  |  |  | - |
Exercised during 2022 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Options outstanding December 31, 2022 |  |  | 91,663 |  |  |  | 1.75 |  |  |  | 2.55 |  |  |  | 1,083 |
Exercisable, December 31, 2022 |  |  | 77,776 |  |  |  | 1.66 |  |  |  | 2.30 |  |  |  | 1,083 |
Restricted Stock [Member] |
Notes Tables |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant-Date Fair Value per Award |
Non-vested as January 1, 2022 |  |  | 96,557 |  |  |  | 2.33 |
Granted |  |  | 975,148 |  |  |  | 0.86 |
Vested |  |  | (449,695 | ) |  |  | - |
Cancelled |  |  | (186,717 | ) |  |  | - |
Non-vested as December 31, 2022 |  |  | 435,293 |  |  |  | 1.18 |

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