Note 1 - Background and Basis of Presentation - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Revenues, Type	$ 1,054	$ 1,675
Amazon [Member]
Revenues, Type	493	200
Walmart [Member]
Revenues, Type	111	0
Fred Meyer [Member]
Revenues, Type	0	433
Variety Wholesalers [Member]
Revenues, Type	0	455
Three Largest Customers [Member]
Revenues, Type	604	1,088
Product [Member]
Revenues, Type	929	1,589
License [Member]
Revenues, Type	$ 125	$ 86