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Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax assets: |  |
Capitalized research and development costs | $ 1,260 | $ 0
Operating lease liabilities | 1,125 | 1,407
Inventories | 602 | 387
Accrued vacation pay and stock-based compensation | 465 | 354
Net operating loss (state and foreign) | 285 | 205
Allowance for doubtful accounts | 43 | 45
Accrued warranty | 54 | 31
Acquisition costs | 46 | 9
Tax credit carryforwards | 89 | 17
Other | 0 | 49
Total | 3,969 | 2,504
Valuation allowance | (227) | (64)
Deferred tax assets | 3,742 | 2,440
Deferred tax liabilities: |  |
Net intangible assets | (1,961) | (2,381)
Right-of-use assets | (996) | (1,245)
Depreciation of property and equipment | (385) | (193)
Other | (120) | 0
Deferred tax liabilities | (3,462) | (3,819)
Net deferred tax assets (liabilities) | $ 280 |
Net deferred tax assets (liabilities) |  | $ (1,379)

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