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Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Net operating loss carryforward | $ 9,495 | $ 7,381
Stock-based compensation | 1,110 | 664
Accruals and reserves | 192 | 181
Inventory | 88 | 42
Lease liabilities | 208 | 101
Tax credit carryforward | 152 |
Other | 4 |
Total deferred tax assets | 11,249 | 8,369
Intangibles | (2,217) |
Right-of-use assets | (218) |
Fixed assets | (108) | (24)
Total deferred tax liabilities | (2,543) | (24)
Total deferred taxes | 8,706 | 8,345
Less: valuation allowance | (8,706) | (8,345)
Net deferred taxes |  |

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