Note 4 - Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2026	Apr. 30, 2025
Total revenue from contracts with customers	$ 9,672	$ 7,902
Transferred at Point in Time [Member]
Total revenue from contracts with customers	9,055	7,556
Transferred over Time [Member]
Total revenue from contracts with customers	617	346
UNITED STATES
Total revenue from contracts with customers	162	550
CHINA
Total revenue from contracts with customers	4,887	776
NORWAY
Total revenue from contracts with customers	3,640	3,275
TÜRKIYE
Total revenue from contracts with customers	145	227
SINGAPORE
Total revenue from contracts with customers	0	1,027
NETHERLANDS
Total revenue from contracts with customers	694	209
JAPAN
Total revenue from contracts with customers	0	678
Other Countries [Member]
Total revenue from contracts with customers	$ 144	$ 1,160