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Note 15 - Share-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | ​ |  |  | ​ |  |  | Weighted |  |  | ​ |  |  | Weighted |  |  | ​ |
​ |  | ​ |  |  | Weighted |  |  | Average |  |  | ​ |  |  | Average |  |  | ​ |
​ |  | ​ |  |  | Average |  |  | Share Price |  |  | Weighted |  |  | Remaining |  |  | Aggregate |
​ |  | Number of |  |  | Exercise |  |  | on Date of |  |  | Average |  |  | Contractual |  |  | Intrinsic |
​ |  | shares |  |  | Price |  |  | Exercise |  |  | Fair Value |  |  | Life |  |  | Value |
​ |  | (in thousands, except price data and Contractual Life) |
Outstanding at January 1, 2024 |  |  | 1 |  |  | $ | 13.84 |  |  |  | — |  |  | $ | 7.12 |  |  |  | 0.08 |  |  | $ | 8 |
Exercised |  |  | — |  |  |  | 13.84 |  |  |  | — |  |  |  | 7.12 |  |  |  | — |  |  |  | 2 |
Forfeited |  |  | (1 | ) |  |  | 13.84 |  |  |  | — |  |  |  | 7.12 |  |  |  | — |  |  |  | — |
Outstanding, March 31, 2024 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercisable, March 31, 2024 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Vested and expected to vest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] |
|  | ​ |  |  | Weighted |  |  | ​ |  |  | ​ |
​ |  | ​ |  |  | Average Share |  |  | Weighted |  |  | Aggregate |
​ |  | Number of |  |  | Price on Date |  |  | Average Fair |  |  | Intrinsic |
​ |  | shares |  |  | of Release |  |  | Value |  |  | Value |
​ |  | (in thousands, except price data) |
Outstanding at January 1, 2024 |  |  | 1,533 |  |  |  | — |  |  | $ | 7.82 |  |  | $ | 29,610 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Released |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Cancelled/Forfeited |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Outstanding, March 31, 2024 |  |  | 1,533 |  |  |  | — |  |  |  | 7.82 |  |  |  | 21,242 |
Vested and expected to vest |  |  | 1,533 |  |  |  | — |  |  | $ | 7.82 |  |  | $ | 21,242 |
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
|  | ​ |  |  | Weighted |  |  | ​ |  |  | ​ |
​ |  | ​ |  |  | Average Share |  |  | Weighted |  |  | Aggregate |
​ |  | Number of |  |  | Price on Date |  |  | Average Fair |  |  | Intrinsic |
​ |  | shares |  |  | of Release |  |  | Value |  |  | Value |
​ |  | (in thousands, except price data) |
Outstanding at January 1, 2024 |  |  | 2,873 |  |  |  | — |  |  | $ | 4.89 |  |  | $ | 55,507 |
Granted |  |  | 32 |  |  |  | — |  |  |  | 21.34 |  |  |  | 672 |
Released |  |  | (373 | ) |  |  | — |  |  |  | 6.39 |  |  |  | 5,840 |
Cancelled/Forfeited |  |  | (4 | ) |  |  | — |  |  |  | 9.78 |  |  |  | 60 |
Outstanding, March 31, 2024 |  |  | 2,528 |  |  |  | — |  |  |  | 4.87 |  |  |  | 35,030 |
Vested and expected to vest |  |  | 2,528 |  |  |  | — |  |  | $ | 4.87 |  |  | $ | 35,030 |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three months ended |
​ |  | March 31, |
​ |  | 2024 |  |  | 2023 |
Share-based compensation - by expense type |  | ​ |  |  | ​ |
Cost of goods sold |  | $ | 102 |  |  | $ | 114 |
Research and development |  |  | 280 |  |  |  | 297 |
Sales and marketing |  |  | 285 |  |  |  | 195 |
General and administrative |  |  | 2,172 |  |  |  | 1,684 |
Total share-based compensation expense |  | $ | 2,839 |  |  | $ | 2,290 |

X
- 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 number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 + 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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- Definition Tabular disclosure of number and weighted-average grant date fair value for nonvested performance shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Subparagraph (c) -Paragraph 2 -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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