Note 6 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Total revenue from contracts with customers	$ 9,678	$ 10,597
Transferred at Point in Time [Member]
Total revenue from contracts with customers	9,377	10,512
Transferred over Time [Member]
Total revenue from contracts with customers	301	85
UNITED STATES
Total revenue from contracts with customers	345	392
Europe [Member]
Total revenue from contracts with customers	2,785	6,500
Asia Pacific [Member]
Total revenue from contracts with customers	5,843	3,582
Other Countries [Member]
Total revenue from contracts with customers	$ 705	$ 123