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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Number of Major Source Manufacturers | 1 |  |
Accounts Receivable, Allowance for Credit Loss | $ 3 |  | $ 3
Inventory Valuation Reserves | 229 |  | 264
Goodwill and Intangible Asset Impairment | 0 | $ 0 |
Business Combination, Contingent Consideration, Liability | 0 |  | $ 0
Impairment, Long-Lived Asset, Held-for-Use | $ 0 | 0 |
Payment for Product Supply Period (Day) | 30 days |  |
Advertising Expense | $ 200 | $ 300 |
Equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |  |
Equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 7 years |  |
Computer Equipment and Software [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |  |
Computer Equipment and Software [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |  |
Furniture and Fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 5 years |  |
Furniture and Fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 7 years |  |
Revenue from Contract with Customer Benchmark [Member] | Distributor Concentration Risk [Member] | Avenova Spray [Member] |  |  |
Concentration Risk, Percentage | 74.00% | 75.00% |

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