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Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Net operating loss carryforward | $ 12,314 | $ 9,495
Stock-based compensation | 1,678 | 1,110
Accruals and reserves | 427 | 192
Inventory | 142 | 88
Lease liabilities | 2,247 | 208
Tax credit carryforward | 225 | 152
Other | 48 | 4
Total deferred tax assets | 17,081 | 11,249
Intangibles | (5,025) | (2,217)
Right-of-use assets | (2,261) | (218)
Fair value change in investments | (287) | 0
Fixed assets | (959) | (108)
Other | (51) | 0
Total deferred tax liabilities | (8,583) | (2,543)
Total deferred taxes | 8,498 | 8,706
Less: valuation allowance | (8,498) | (8,706)
Net deferred taxes | $ 0 | $ 0

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