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Note 9 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year Ended December 31,
|  | 2023 |  | 2022
Current tax expense (benefit): |  |  |  |  |  |  |  |
Federal |  | $ | 42 |  |  | $ | (147 | )
State and local |  |  | 177 |  |  |  | 209 |
Total current tax expense |  |  | 219 |  |  |  | 62 |
Deferred tax expense (benefit): |  |  |  |  |  |  |  |
Federal |  |  | 83 |  |  |  | (1,411 | )
State and local |  |  | (1 | ) |  |  | (180 | )
Total before change in valuation allowance |  |  | 82 |  |  |  | (1,591 | )
Change in valuation allowance |  |  | — |  |  |  | — |
Net deferred tax expense (benefit) |  |  | 82 |  |  |  | (1,591 | )
Total income tax expense (benefit) |  | $ | 301 |  |  | $ | (1,529 | )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year Ended December 31,
|  | 2023 |  | 2022
Income (loss) before income taxes |  | $ | 646 |  |  | $ | (6,406 | )
Tax rate |  |  | 21.0 | % |  |  | 21.0 | %
Income tax expense (benefit) at federal statutory rate |  |  | 136 |  |  |  | (1,344 | )
Tax effect of: |  |  |  |  |  |  |  |
State taxes, net of federal benefit |  |  | 57 |  |  |  | (114 | )
Permanent differences |  |  | — |  |  |  | 43 |
Noncontrolling interests |  |  | (10 | ) |  |  | — |
Change in rate |  |  | (18 | ) |  |  | (17 | )
Change in uncertain tax positions |  |  | 41 |  |  |  | 29 |
Other |  |  | 95 |  |  |  | (126 | )
Income tax provision (benefit) |  | $ | 301 |  |  | $ | (1,529 | )
Effective tax rate |  |  | 46.5 | % |  |  | 23.9 | %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31,
|  | 2023 |  | 2022
Deferred tax assets: |  |  |  |  |  |  |  |
Inventory reserve |  | $ | 19 |  |  | $ | 12 |
Allowance for doubtful accounts |  |  | 15 |  |  |  | 20 |
Lease liability |  |  | 19 |  |  |  | 31 |
Unrealized gains on marketable securities |  |  | 3 |  |  |  | 166 |
Stock-based compensation |  |  | 1 |  |  |  | 8 |
Depreciation and amortization |  |  | 13 |  |  |  | 11 |
Federal tax loss carryforwards |  |  | 77 |  |  |  | — |
Other reserves and accruals |  |  | 24 |  |  |  | 17 |
Total deferred tax assets |  | $ | 171 |  |  | $ | 265 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Right-of-use asset |  |  | 19 |  |  |  | 31 |
Total deferred tax liabilities |  |  | 19 |  |  |  | 31 |
Net deferred tax assets before valuation allowance |  |  | 152 |  |  |  | 234 |
Valuation allowance |  |  | — |  |  |  | — |
Net deferred tax assets (liabilities) |  | $ | 152 |  |  | $ | 234 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | Year Ended December 31,
|  | 2023 |  | 2022
Balance, beginning of year |  | $ | 637 |  |  | $ | 458 |
Additions for tax positions of prior years |  |  | (31 | ) |  |  | 37 |
Additions based on tax positions related to the current year |  |  | 72 |  |  |  | 142 |
Balance, end of year |  | $ | 678 |  |  | $ | 637 |

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