Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Total sales, net	$ 2,629	$ 1,807
Avenova Spray [Member]
Total sales, net	1,426	1,575
DERMAdoctor [Member]
Total sales, net	891	0
NeutroPhase [Member]
Total sales, net	148	0
Other Products [member]
Total sales, net	158	226
Total Product Revenue [Member]
Total sales, net	2,623	1,801
Product and Service, Other [Member]
Total sales, net	$ 6	$ 6