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Note O - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year ended December 31, |
|  | 2024 |  |  | 2023 |
Federal statutory rate |  |  | 21.00 | % |  |  | 21.00 | %
Effect of: |  |  |  |  |  |  |  |
Foreign rate differential |  |  | 0.04 |  |  |  | - |
Change in valuation allowance |  |  | (13.17 | ) |  |  | (23.29 | )
Return to provision and deferred true-up |  |  | (4.40 | ) |  |  | (2.41 | )
Federal research and development credit |  |  | - |  |  |  | 4.09 |
Change in rate |  |  | - |  |  |  | (0.01 | )
State tax benefit (net of federal) |  |  | 5.05 |  |  |  | 5.19 |
Stock-based compensation |  |  | (0.55 | ) |  |  | (0.20 | )
Global intangible low-taxed income credit |  |  | (0.02 | ) |  |  | (3.41 | )
Officers compensation |  |  | (0.23 | ) |  |  | - |
Expiration of net operating loss deferred tax asset |  |  | (3.01 | ) |  |  | - |
Deferred adjustment and rate change |  |  | (4.27 | ) |  |  | - |
Foreign research and development excess benefit |  |  | - |  |  |  | (0.86 | )
Uncertain tax position |  |  | (17.88 | ) |  |  | - |
Other |  |  | 0.39 |  |  |  | (0.10 | )
Federal income tax provision effective rate |  |  | (17.05 | )% |  |  | 0.00 | %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |
|  | 2024 |  |  | 2023 |
Deferred tax assets relating to: |  |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 100,552 |  |  | $ | 90,743 |
Research and development tax carryforward |  |  | 19,153 |  |  |  | 20,670 |
Stock-based compensation |  |  | 5,711 |  |  |  | 5,154 |
174 expenses |  |  | 33,941 |  |  |  | 30,241 |
Right-of-use liability |  |  | 108 |  |  |  | 265 |
Property and equipment |  |  | 79 |  |  |  | 23 |
Other deferred tax assets |  |  | 3,652 |  |  |  | 1,951 |
Total gross deferred tax assets |  |  | 163,196 |  |  |  | 149,047 |
Deferred tax liabilities relating to: |  |  |  |  |  |  |  |
Right-of-use asset |  |  | 82 |  |  |  | 249 |
Intangibles |  |  | 17,859 |  |  |  | 14,473 |
Total gross deferred tax liabilities |  |  | 17,941 |  |  |  | 14,722 |
Deferred tax assets less liabilities |  |  | 145,256 |  |  |  | 134,324 |
Valuation allowance |  |  | (146,359 | ) |  |  | (134,488 | )
Net deferred tax liability |  | $ | (1,103 | ) |  | $ | (164 | )

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