Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Accounts Receivable, Allowance for Credit Loss	$ 3		$ 19
Inventory Valuation Reserves	488	$ 499	499
Goodwill and Intangible Asset Impairment	0	0
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	970		$ 970
Impairment, Long-Lived Asset, Held-for-Use	$ 0	0
Payment for Product Supply Period (Day)	30 days
Deferred Revenue	$ 307	4
Advertising Expense	326	$ 617
Trade Names [Member]
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	$ 0
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	75.00%	82.00%

Period within which payment for product supply is expected from customer.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of valuation reserve for inventory.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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