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Note Q - Stock Options (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 average |  |  | Weighted average remaining |  |  | Aggregate |
|  | 2015 Plan |  |  | Non Plan |  |  | Total |  |  | exercise price |  |  | life (in years) |  |  | intrinsic value |
Outstanding, as of December 31, 2020 |  |  | 94,183 |  |  |  | 133,091 |  |  |  | 227,274 |  |  | $ | 17.61 |  |  |  | 3.87 |  |  | $ | 0 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited |  |  | (3,291 | ) |  |  | — |  |  |  | (3,291 | ) |  |  | 3.87 |  |  |  |  |  |  |  |  |
Expired |  |  | (84 | ) |  |  | (11,438 | ) |  |  | (11,522 | ) |  |  | 39.13 |  |  |  |  |  |  |  |  |
Outstanding, as of December 31, 2021 |  |  | 90,808 |  |  |  | 121,653 |  |  |  | 212,461 |  |  | $ | 16.65 |  |  |  | 3.03 |  |  | $ | 0 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Expired |  |  | — |  |  |  | (9,465 | ) |  |  | (9,465 | ) |  |  | 17.28 |  |  |  |  |  |  |  |  |
Outstanding, as of December 31, 2022 |  |  | 90,808 |  |  |  | 112,188 |  |  |  | 202,996 |  |  | $ | 16.63 |  |  |  | 2.14 |  |  | $ | 0 |
Vested or expected to vest at December 31, 2022 |  |  |  |  |  |  |  |  |  |  | 201,271 |  |  | $ | 16.72 |  |  |  | 2.12 |  |  | $ | 0 |
Exercisable at December 31, 2022 |  |  |  |  |  |  |  |  |  |  | 194,561 |  |  | $ | 17.12 |  |  |  | 2.03 |  |  | $ | 0 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] |
|  |  |  |  |  |  | Options Outstanding |  |  | Options Exercisable |
| Range of exercise prices |  |  | Number of shares |  |  | Weighted average exercise price |  |  | Weighted average remaining life (in years) |  |  | Number exercisable |  |  | Weighted average exercise price |
| $ | 4.08 | - | 5.84 |  |  |  | 25,565 |  |  | $ | 5.20 |  |  |  | 4.63 |  |  |  | 17,130 |  |  | $ | 5.20 |
| $ | 5.85 | - | 28.00 |  |  |  | 177,431 |  |  |  | 18.27 |  |  |  | 1.81 |  |  |  | 177,431 |  |  |  | 18.27 |
| $ | 4.08 | - | 28.00 |  |  |  | 202,996 |  |  |  |  |  |  |  |  |  |  |  | 194,561 |  |  |  |  |

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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding and exercisable options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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