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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, Expensed and Capitalized, Amount [Table Text Block] |
|  | For the Three Months Ended June 30, |  |  | For the Six Months Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Sales and marketing |  | $ | 263 |  |  | $ | 345 |  |  | $ | 498 |  |  | $ | 653 |
Research and development |  |  | 204 |  |  |  | 245 |  |  |  | 418 |  |  |  | 509 |
General and administrative |  |  | 629 |  |  |  | 548 |  |  |  | 1,267 |  |  |  | 1,110 |
Total non-cash stock compensation expense |  | $ | 1,096 |  |  | $ | 1,138 |  |  | $ | 2,183 |  |  | $ | 2,272 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Wtd. Avg. |  |  |  |  |
|  |  |  |  |  |  |  |  |  | Remaining |  |  | Aggregate |
|  |  |  |  |  | Weighted Avg. |  |  | Contractual |  |  | Intrinsic |
|  | Shares |  |  | Exercise Price |  |  | Life (Yrs) |  |  | Value |
Outstanding as of December 31, 2024 |  |  | 5 |  |  | $ | 27.57 |  |  |  | 4.1 |  |  | $ | — |
Granted |  |  | 25 |  |  |  | 1.26 |  |  |  | — |  |  | $ | — |
Outstanding as of June 30, 2025 |  |  | 30 |  |  | $ | 5.99 |  |  |  | 8.6 |  |  | $ | — |
Vested and expected to vest at June 30, 2025 |  |  | 30 |  |  | $ | 5.99 |  |  |  | 8.6 |  |  | $ | — |
Exercisable as of June 30, 2025 |  |  | 5 |  |  | $ | 27.46 |  |  |  | 3.7 |  |  | $ | — |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] |
|  |  |  |  |  | Weighted |
|  |  |  |  |  | Average |
|  |  |  |  |  | Grant Date |
|  | Shares |  |  | Fair Value |
Unvested at December 31, 2024 |  |  | 419 |  |  | $ | 7.85 |
Granted |  |  | 2,006 |  |  |  | 1.17 |
Vested |  |  | (1,005 | ) |  |  | 2.51 |
Canceled and forfeited |  |  | (16 | ) |  |  | 2.28 |
Unvested at June 30, 2025 |  |  | 1,404 |  |  | $ | 2.19 |

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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 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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