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Note 9 - Share-based Payment Awards (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted Average |  |  |  |  |
|  |  |  |  |  | Weighted Average |  |  | Remaining |  |  |  |  |
|  |  |  |  |  | Exercise |  |  | Contractual |  |  | Aggregate Intrinsic |
|  | Shares |  |  | Price |  |  | Term |  |  | Value |
Options outstanding as of January 1, 2024 |  |  | 4,839,226 |  |  | $ | 4.57 |  |  |  |  |  |  |  |  |
Issued |  |  | 1,621,118 |  |  |  | 4.83 |  |  |  |  |  |  |  |  |
Exercised |  |  | (266,353 | ) |  |  | 4.47 |  |  |  |  |  |  |  |  |
Forfeited/Cancelled |  |  | (275,375 | ) |  |  | 4.55 |  |  |  |  |  |  |  |  |
Options outstanding as of December 31, 2024 |  |  | 5,918,616 |  |  | $ | 4.65 |  |  |  | 7.0 |  |  | $ | 51,316 |
Options exercisable at December 31, 2024 |  |  | 4,044,105 |  |  | $ | 4.71 |  |  |  | 6.2 |  |  | $ | 34,837 |
Options vested and expected to vest at December 31, 2024 |  |  | 5,918,616 |  |  | $ | 4.65 |  |  |  | 7.0 |  |  | $ | 51,316 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | December 31, 2024 |  |  | December 31, 2023 |  |  | December 31, 2022 |
Expected dividends |  |  | — | % |  |  | — | % |  |  | — | %
Expected volatility |  |  | 70 | % |  |  | 70 | % |  |  | 70 | %
Risk-free interest rate |  |  | 3.5 - 4.4 | % |  |  | 3.5 - 4.7 | % |  |  | 1.5 - 3.9 | %
Expected term (in years) |  |  | 6.2 |  |  |  | 6.3 |  |  |  | 5.9 |
Weighted average grant date fair value |  | $ | 3.22 |  |  | $ | 2.32 |  |  | $ | 2.32 |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  | Weighted Average Grant-Date |
|  | December 31, 2024 |  |  | Fair Value Per Unit |
Outstanding and unvested as of January 1, 2024 |  |  | 274,204 |  |  | $ | 2.63 |
Granted |  |  | 65,266 |  |  | $ | 6.74 |
Vested |  |  | (90,402 | ) |  | $ | 2.63 |
Forfeited |  |  | (23,000 | ) |  | $ | 2.63 |
Outstanding and unvested as of December 31, 2024 |  |  | 226,068 |  |  | $ | 3.82 |

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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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- 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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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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