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Note 16 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Net operating loss carryforwards | $ 29,102 | $ 27,500 |  |
Stock-based compensation | 3,207 | 2,066 |  |
Accruals and reserves | 3,724 | 3,402 |  |
Inventory | 425 | 236 |  |
Lease liabilities | 3,653 | 4,198 |  |
Tax credit carryforward | 1,423 | 594 |  |
Capitalized research and development | 2,405 | 0 |  |
Other | 445 | 318 |  |
Total deferred tax assets | 44,384 | 38,314 |  |
Intangibles | (6,150) | (35,241) |  |
Right-of-use assets | (3,458) | (4,070) |  |
Fair value change in investments | (447) | (294) |  |
Fixed assets | (1,177) | (1,203) |  |
Other | 0 | 0 |  |
Total deferred tax liabilities | (11,232) | (40,808) |  |
Net deferred tax (liabilities) assets before valuation allowance | 33,152 | (2,494) |  |
Less: valuation allowance | (33,402) | (2,993) | $ (8,498) | $ (8,706)
Net deferred tax liabilities | $ (250) | $ (5,487) |  |

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