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Note 11 - Stock-based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Nonvested Share Activity [Table Text Block] |
|  |  |  |  |  | Weighted- |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant-date |
|  | Shares |  |  | Fair Value |
Nonvested at December 31, 2021 |  |  | 634,247 |  |  | $ | 11.14 |
Granted |  |  | 219,878 |  |  | $ | 2.22 |
Forfeited or canceled |  |  | - |  |  | $ | - |
Vested |  |  | (310,501 | ) |  | $ | 8.75 |
Nonvested at December 31, 2022 |  |  | 543,624 |  |  | $ | 8.90 |
Granted |  |  | 603,884 |  |  | $ | 3.85 |
Forfeited or canceled |  |  | (90,315 | ) |  | $ | 10.75 |
Vested |  |  | (468,116 | ) |  | $ | 7.19 |
Nonvested at December 31, 2023 |  |  | 589,077 |  |  | $ | 4.80 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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