Note 4 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Total revenue from contracts with customers	$ 7,902	$ 9,678
Transferred at Point in Time [Member]
Total revenue from contracts with customers	7,556	9,377
Transferred over Time [Member]
Total revenue from contracts with customers	346	301
UNITED STATES
Total revenue from contracts with customers	550	325
CHINA
Total revenue from contracts with customers	259	5,768
NORWAY
Total revenue from contracts with customers	3,275	2,758
TÜRKIYE
Total revenue from contracts with customers	227	33
SINGAPORE
Total revenue from contracts with customers	1,027	211
CANADA
Total revenue from contracts with customers	517	0
JAPAN
Total revenue from contracts with customers	678	203
Other Countries [Member]
Total revenue from contracts with customers	$ 1,369	$ 380