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Note 3 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
Origin of loss before taxes |  | 2024 |  |  | 2023 |
United States |  | $ | (1,740 | ) |  | $ | (1,772 | )
Foreign |  |  | (126 | ) |  |  | 303 |
Loss before income taxes |  | $ | (1,866 | ) |  | $ | (1,469 | )
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | 2024 |  |  | 2023 |
Current: |  |  |  |  |  |  |  |
Federal |  | $ | — |  |  | $ | — |
State |  |  | (51 | ) |  |  | (19 | )
Foreign |  |  | (22 | ) |  |  | (55 | )
Total current |  |  | (73 | ) |  |  | (74 | )
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | (2 | ) |  |  | 2 |
State |  |  | (2 | ) |  |  | 3 |
Total deferred |  |  | (4 | ) |  |  | 5 |
Income tax expense |  | $ | (77 | ) |  | $ | (69 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | 2024 |  |  | 2023 |
Provision at the U.S. federal statutory rate |  |  | 21.0 | % |  |  | 21.0 | %
State taxes, net of federal benefit |  |  | 4.9 | % |  |  | 4.7 | %
Foreign tax rate differential |  |  | 0.2 | % |  |  | (0.6 | )%
Valuation allowance |  |  | 105.6 | % |  |  | (4.9 | )%
Chile outside basis differential |  |  | (0.8 | )% |  |  | — | %
Italy IRES/IREP |  |  | — | % |  |  | (3.8 | )%
Accrual to return |  |  | 2.1 | % |  |  | (5.8 | )%
Research and development credit |  |  | 11.2 | % |  |  | 5.4 | %
State rate change |  |  | 0.9 | % |  |  | (1.4 | )%
Share based compensation |  |  | (9.0 | )% |  |  | (6.7 | )%
Net Operating Loss expiration |  |  | (144.3 | )% |  |  | — | %
Other Deferred true up |  |  | 6.4 | % |  |  | (6.6 | )%
Global Intangible Low-Taxed Income (GILTI) inclusion |  |  | — | % |  |  | (4.4 | )%
Other |  |  | (1.1 | )% |  |  | (1.7 | )%
Income tax expense effective rate |  |  | (2.9 | )% |  |  | (4.8 | )%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | 2024 |  |  | 2023 |
Deferred tax assets: |  |  |  |  |  |  |  |
Stock compensation expense |  | $ | 80 |  |  | $ | 250 |
Royalty accruals |  |  | 10 |  |  |  | 10 |
Bad debt allowance |  |  | 51 |  |  |  | 52 |
Net operating loss carryforwards |  |  | 9,067 |  |  |  | 12,048 |
Credit carry-forwards |  |  | 1,472 |  |  |  | 1,134 |
Inventory reserve |  |  | 154 |  |  |  | 153 |
Depreciation |  |  | 433 |  |  |  | 548 |
Research and Development Costs |  |  | 2,233 |  |  |  | 1,053 |
Other |  |  | 399 |  |  |  | 606 |
Total deferred tax assets |  |  | 13,899 |  |  |  | 15,854 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Goodwill |  |  | (296 | ) |  |  | (238 | )
Intangible assets |  |  | (82 | ) |  |  | (89 | )
Total deferred tax liabilities |  |  | (378 | ) |  |  | (327 | )
Net deferred tax asset before valuation allowance |  |  | 13,521 |  |  |  | 15,527 |
Valuation allowances for deferred tax assets |  |  | (13,697 | ) |  |  | (15,699 | )
Net deferred tax liability |  | $ | (176 | ) |  | $ | (172 | )
Summary of Valuation Allowance [Table Text Block] |
Year |  | Balance at January 1 |  |  | Charged to costs and expenses |  |  | (Deductions)/Other |  |  | Balance at December 31 |
2023 |  | $ | 15,627 |  |  |  | 72 |  |  |  | — |  |  | $ | 15,699 |
2024 |  | $ | 15,699 |  |  |  | (2,002 | ) |  |  | — |  |  | $ | 13,697 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
Year |  | Balance at January 1 |  |  | Change in positions taken in a current period |  |  | Balance at December 31 |
2023 |  | $ | 293 |  |  |  | 33 |  |  | $ | 326 |
2024 |  | $ | 326 |  |  |  | 144 |  |  | $ | 470 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 231 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482663/740-10-55-231 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12A Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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