Note 4 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Total revenue from contracts with customers	$ 36,510	$ 25,012
UNITED STATES
Total revenue from contracts with customers	1,250	1,986
Europe [Member]
Total revenue from contracts with customers	20,248	11,836
Asia Pacific [Member]
Total revenue from contracts with customers	12,399	10,755
Other Countries [Member]
Total revenue from contracts with customers	2,613	435
Transferred at Point in Time [Member]
Total revenue from contracts with customers	35,556	22,544
Transferred over Time [Member]
Total revenue from contracts with customers	$ 954	$ 2,468