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Note J - Stock Option Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
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, 2021 |  |  | 1,953,443 |  |  | $ | 1.88 |  |  |  | 3.09 |  |  | $ | 476,964 |
Granted during 2021 |  |  | 2,140,175 |  |  |  | 2.46 |  |  |  | 8.92 |  |  |  | - |
Exercised during 2021 |  |  | (818,166 | ) |  |  | 1.70 |  |  |  | - |  |  |  | - |
Forfeited or expired during 2021 |  |  | (431,759 | ) |  |  | 2.02 |  |  |  | - |  |  |  | - |
Options outstanding December 31, 2021 |  |  | 2,843,693 |  |  | $ | 2.39 |  |  |  | 7.69 |  |  |  | 49,246 |
Exercisable, December 31, 2021 |  |  | 522,157 |  |  |  | 2.19 |  |  |  | 3.90 |  |  |  | 32,831 |
|  | Number of Options |  |  | Weighted Averaged Exercise Price $ |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Aggregate Intrinsic Options Value $ |
Options outstanding January 1, 2021 |  |  | 74,997 |  |  | $ | 1.41 |  |  |  | 3.18 |  |  | $ | 54,748 |
Granted |  |  | 24,999 |  |  |  | 3.28 |  |  |  | 4.43 |  |  |  | - |
Exercised |  |  | (8,333 | ) |  |  | 1.70 |  |  |  | - |  |  |  | - |
Forfeited |  |  | (8,333 | ) |  |  | 2.34 |  |  |  | - |  |  |  | - |
Options outstanding December 31, 2021 |  |  | 83,330 |  |  |  | 1.85 |  |  |  | 3.33 |  |  |  | 49,748 |
Exercisable, December 31, 2021 |  |  | 55,546 |  |  |  | 1.45 |  |  |  | 2.97 |  |  |  | 45,079 |
Restricted Stock [Member] |
Notes Tables |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
Restricted Stock Awards |  | Shares |  |  | Weighted Average Grant-Date Fair Value per Award |
Non-vested as January 31, 2021 |  |  | - |  |  |  | - |
Granted |  |  | 116,399 |  |  |  | 2.36 |
Vested |  |  | - |  |  |  | - |
Cancelled |  |  | (19,842 | ) |  |  | 2.52 |
Non-vested as December 31, 2021 |  |  | 96,557 |  |  |  | 2.33 |

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