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Note 6 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |
Current: |  |  |  |  |  |  |  |
State |  | $ | 27 |  |  | $ | 19 |
Foreign |  |  | 623 |  |  |  | 617 |
|  |  | 650 |  |  |  | 636 |
Deferred: |  |  |  |  |  |  |  |
Federal |  |  | 1,466 |  |  |  | (661 | )
Foreign |  |  | (165 | ) |  |  | (301 | )
|  |  | 1,301 |  |  |  | (962 | )
Total income tax (benefit) provision |  | $ | 1,951 |  |  | $ | (326 | )
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Deferred tax assets: |  |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 8,515 |  |  | $ | 11,460 |
Research and development |  |  | 3,536 |  |  |  | 2,812 |
Tax credit carryforwards |  |  | 2,898 |  |  |  | 2,600 |
Accrued expenses, reserves and other |  |  | 2,909 |  |  |  | 2,419 |
Intangible assets |  |  | 1,596 |  |  |  | 1,521 |
Total deferred tax assets |  |  | 19,454 |  |  |  | 20,812 |
Valuation allowance for deferred tax assets |  |  | (2,441 | ) |  |  | (2,416 | )
Net deferred tax assets |  |  | 17,013 |  |  |  | 18,396 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Intangible assets |  |  | (8,095 | ) |  |  | (8,176 | )
Accrued expenses, reserves and other |  |  | (65 | ) |  |  | (68 | )
Total deferred tax liabilities |  |  | (8,160 | ) |  |  | (8,244 | )
Net deferred tax assets |  | $ | 8,853 |  |  | $ | 10,152 |
Schedule of Net Deferred Tax Liabilities [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
Deferred tax assets, net |  | $ | 10,567 |  |  | $ | 12,069 |
Deferred tax liabilities |  |  | (1,714 | ) |  |  | (1,917 | )
|  | $ | 8,853 |  |  | $ | 10,152 |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |
United States |  | $ | 7,294 |  |  | $ | (2,771 | )
Foreign |  |  | 1,823 |  |  |  | 2,325 |
|  | $ | 9,117 |  |  | $ | (446 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year ended December 31, |
|  | 2023 |  |  | 2022 |
Statutory income tax rate |  |  | 21 | % |  |  | 21 | %
Increase (decrease) in tax provision resulting from: |  |  |  |  |  |  |  |
Equity compensation |  |  | 0.4 |  |  |  | (29.7 | )
Global intangible low-taxed income |  |  | 1.4 |  |  |  | (73.1 | )
China R&D deduction |  |  | (1.0 | ) |  |  | 20.6 |
Income tax credits |  |  | (3.3 | ) |  |  | 81.0 |
Foreign tax rate change |  |  | - |  |  |  | 18.3 |
Foreign tax rates |  |  | 1.7 |  |  |  | 11.5 |
States taxes |  |  | 0.8 |  |  |  | (3.4 | )
Other |  |  | 0.4 |  |  |  | 26.9 |
Effective income tax rate |  |  | 21.4 | % |  |  | 73.1 | %

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