Note 4 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Revenue from Contract with Customer, Excluding Assessed Tax	$ 46,863	$ 36,510
UNITED STATES
Revenue from Contract with Customer, Excluding Assessed Tax	2,478	1,086
CHINA
Revenue from Contract with Customer, Excluding Assessed Tax	17,720	7,668
NORWAY
Revenue from Contract with Customer, Excluding Assessed Tax	21,956	14,385
TÜRKIYE
Revenue from Contract with Customer, Excluding Assessed Tax	634	5,216
SINGAPORE
Revenue from Contract with Customer, Excluding Assessed Tax	366	2,192
CANADA
Revenue from Contract with Customer, Excluding Assessed Tax	0	1,882
Other Countries [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,709	4,081
Transferred at Point in Time [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	45,189	35,556
Transferred over Time [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 1,674	$ 954