Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Total sales, net	$ 14,726	$ 14,404
Avenova Spray [Member]
Total sales, net	7,805	7,651
DERMAdoctor [Member]
Total sales, net	3,552	4,155
NeutroPhase [Member]
Total sales, net	1,377	976
Other Products [member]
Total sales, net	1,953	1,592
Total Product Revenue [Member]
Total sales, net	14,687	14,374
Product and Service, Other [Member]
Total sales, net	$ 39	$ 30