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Note O - Income Taxes - Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
NOL carryforward | $ 59,788 | $ 49,469 |  |
Inventory reserves | 3,700 | 3,195 |  |
Unrealized gains and losses | 221 | 355 |  |
Share-based compensation | 1,332 | 1,013 |  |
Foreign tax credit | 4,599 | 4,599 |  |
Research and development credits | 12,508 | 10,998 |  |
Capitalized research and development | 14,449 | 8,717 |  |
Interest | 4,465 | 5,659 |  |
ASC 842 Assets | 1,515 | 1,561 |  |
Other | 995 | 941 |  |
Deferred tax assets | 103,572 | 86,507 |  |
Less valuation allowance | (94,996) | (78,124) | $ (69,680) | $ (57,721)
Deferred tax assets, net | 8,576 | 8,383 |  |
Depreciation and amortization | (7,216) | (6,992) |  |
ASC 842 Liabilities | (1,360) | (1,391) |  |
Deferred tax liabilities | (8,576) | (8,383) |  |
Deferred tax assets (liabilities), net | $ 0 | $ 0 |  |

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