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Note 8 - Stock-based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Stock options and restricted stock units, net of forfeitures |  | $ | 124 |  |  | $ | 98 |  |  | $ | 228 |  |  | $ | 187 |
After-tax effect of stock-based compensation |  | $ | 124 |  |  | $ | 98 |  |  | $ | 228 |  |  | $ | 187 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted- Average |  |  |  |  |
|  | Number |  |  | Weighted- |  |  | Remaining |  |  | Aggregate |
|  | of |  |  | Average |  |  | Contractual |  |  | Intrinsic |
|  | Options |  |  | Exercise Price |  |  | Term |  |  | Value |
Outstanding on January 1, 2024 |  |  | 270,500 |  |  | $ | 3.09 |  |  |  |  |  |  |  |  |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Expired or forfeited |  |  | (94,500 | ) |  |  | 5.22 |  |  |  |  |  |  |  |  |
Outstanding on June 30, 2024 |  |  | 176,000 |  |  | $ | 1.94 |  |  |  | 1.68 |  |  | $ | 5 |
Exercisable on June 30, 2024 |  |  | 176,000 |  |  | $ | 1.94 |  |  |  | 1.68 |  |  | $ | 5 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  |  |  |  |  | Weighted Average |
|  |  |  |  |  | Grant Date |
|  | Shares |  |  | Fair Value |
Unvested restricted stock units at January 1, 2024 |  |  | 1,762,248 |  |  | $ | 1.29 |
Granted |  |  | 151,000 |  |  |  | 1.09 |
Vested |  |  | (406,026 | ) |  |  | 1.14 |
Forfeited |  |  | (425,100 | ) |  |  | 1.26 |
Unvested restricted stock units at June 30, 2024 |  |  | 1,082,122 |  |  | $ | 1.26 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -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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- 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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -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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