Note 22 - Sales and Major Customers - Summary of Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Total revenues	$ 23,107	$ 21,215
UK and Europe [Member]
Total revenues	8,174	8,005
CANADA
Total revenues	273	1,267
Latin America [Member]
Total revenues	325	0
Asia / South Pacific [Member]
Total revenues	11,244	6,523
Eurasia [Member]
Total revenues	647	507
Other Countries [Member]
Total revenues	35	1,226
Non-US [Member]
Total revenues	$ 20,698	$ 17,528