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Note 8 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Inventory reserve | $ 17 | $ 19
Allowance for doubtful accounts | 12 | 15
Lease liability | 72 | 19
Unrealized gains on marketable securities | 0 | 3
Stock-based compensation | 9 | 1
Depreciation and amortization | 14 | 13
Federal tax loss carryforwards | 72 | 77
Other reserves and accruals | 35 | 24
Total deferred tax assets | 231 | 171
Right-of-use asset | 72 | 19
Total deferred tax liabilities | 72 | 19
Net deferred tax assets before valuation allowance | 159 | 152
Valuation allowance | 0 | 0
Net deferred tax assets | $ 159 | $ 152

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