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Note 17 - Stock-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Assumptions |  | Options |  |  | Options |  |  | Options |
Expected volatility rate |  |  | n/a |  |  |  | 56.61 | % |  |  | n/a |
Expected dividend yield |  |  | n/a |  |  |  | 3.34 | % |  |  | n/a |
Risk-free interest rate |  |  | n/a |  |  |  | 3.20 | % |  |  | n/a |
Expected forfeiture rate |  |  | n/a |  |  |  | 0.00 | % |  |  | n/a |
Expected term in years |  |  | n/a |  |  |  | 2.3 |  |  |  | n/a |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  | Options |  |  | Exercise Price |
Outstanding at January 1, 2021 |  |  | 44,000 |  |  | $ | 12.73 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | (20,000 | ) |  |  | 11.56 |
Canceled, forfeited, or expired |  |  | - |  |  |  | - |
Outstanding at December 31, 2021 |  |  | 24,000 |  |  |  | 13.71 |
Granted |  |  | 20,000 |  |  |  | 7.18 |
Exercised |  |  | - |  |  |  | - |
Canceled, forfeited, or expired |  |  | - |  |  |  | - |
Outstanding at December 31, 2022 |  |  | 44,000 |  |  |  | 10.74 |
Granted |  |  | - |  |  |  | - |
Exercised |  |  | - |  |  |  | - |
Canceled, forfeited, or expired |  |  | (10,000 | ) |  |  | 16.21 |
Outstanding at December 31, 2023 |  |  | 34,000 |  |  |  | 9.13 |
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  |  |  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  | Number |  |  | Average |  |  | Weighted |  |  | Number |  |  | Weighted |
|  |  |  | Outstanding at |  |  | Remaining |  |  | Average |  |  | Exercisable at |  |  | Average |
Exercise |  |  | December 31, |  |  | Contractual |  |  | Exercise |  |  | December 31, |  |  | Exercise |
Price |  |  | 2023 |  |  | Life |  |  | Price |  |  | 2022 |  |  | Price |
$ | 12.07 |  |  |  | 10,000 |  |  |  | 0.71 |  |  | $ | 12.07 |  |  |  | 10,000 |  |  | $ | 12.07 |
| 11.56 |  |  |  | 4,000 |  |  |  | 1.06 |  |  |  | 11.56 |  |  |  | 4,000 |  |  |  | 11.56 |
| 7.18 |  |  |  | 20,000 |  |  |  | 3.61 |  |  |  | 7.18 |  |  |  | 20,000 |  |  |  | 7.18 |
|  |  |  |  | 34,000 |  |  |  | 2.46 |  |  |  | 9.13 |  |  |  | 34,000 |  |  |  | 9.13 |

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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 -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: 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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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