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Note 9 - Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Share-Based Payment Arrangement, Cost by Plan [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Cost of revenue |  | $ | 47 |  |  | $ | 68 |  |  | $ | 110 |  |  | $ | 173 |
Selling, general and administrative |  |  | 476 |  |  |  | 526 |  |  |  | 949 |  |  |  | 1,079 |
Research and development |  |  | 110 |  |  |  | 121 |  |  |  | 220 |  |  |  | 272 |
Net effect on net loss |  | $ | 633 |  |  | $ | 715 |  |  | $ | 1,279 |  |  | $ | 1,524 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted- |  |  |  |  |
|  |  |  |  |  |  |  |  |  | average |  |  |  |  |
|  |  |  |  |  | Weighted- |  |  | Remaining |  |  |  |  |
|  | Number of |  |  | average |  |  | Contractual |  |  | Aggregate |
|  | Options |  |  | Exercise |  |  | Life |  |  | Intrinsic |
Stock Options |  | Outstanding |  |  | Price |  |  | (in years) |  |  | Value |
Balance as of January 1, 2025 |  |  | 1,175 |  |  | $ | 5.16 |  |  |  | 3.16 |  |  | $ | — |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Canceled and expired |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Balance as of June 30, 2025 |  |  | 1,175 |  |  | $ | 5.16 |  |  |  | 2.67 |  |  | $ | — |
Options exercisable as of June 30, 2025 |  |  | 1,175 |  |  | $ | 5.16 |  |  |  | 2.67 |  |  | $ | — |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  | Weighted- |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant Date |
Stock Awards |  | Shares |  |  | Share Value |
Non-vested as of January 1, 2025 |  |  | 1,541 |  |  | $ | 2.84 |
Granted |  |  | 589 |  |  | $ | 1.52 |
Vested |  |  | (198 | ) |  | $ | 3.94 |
Forfeited |  |  | (20 | ) |  | $ | 2.81 |
Non-vested as of June 30, 2025 |  |  | 1,912 |  |  | $ | 2.32 |
Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block] |
|  |  |  |  |  | Weighted- |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant Date |
Stock Awards |  | Shares |  |  | Share Value |
Non-vested as of January 1, 2025 |  |  | 301 |  |  | $ | 2.28 |
Granted |  |  | 151 | (1) |  | $ | 2.23 |
Vested |  |  | (75 | ) |  | $ | 2.28 |
Forfeited |  |  | — |  |  | $ | — |
Non-vested as of June 30, 2025 |  |  | 377 |  |  | $ | 2.26 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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 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 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 Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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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