Note 1 - Background and Basis of Presentation - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Revenues, Type	$ 4,003	$ 2,622	$ 8,939	$ 6,869
Amazon [Member]
Revenues, Type	1,714	509	3,406	1,458
Walmart [Member]
Revenues, Type	1,013	1,692	2,945	3,951
Big Lots [Member]
Revenues, Type	957	0	957	0
Fred Meyer [Member]
Revenues, Type	0	0	0	718
Three Largest Customers [Member]
Revenues, Type	3,684	2,201	7,308	6,127
Product [Member]
Revenues, Type	3,892	2,599	8,691	6,745
License [Member]
Revenues, Type	$ 111	$ 23	$ 248	$ 124