Note 6 - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Total revenue from contracts with customers	$ 10,036	$ 7,561	$ 19,714	$ 18,158
Transferred at Point in Time [Member]
Total revenue from contracts with customers	9,661	7,191	19,038	17,703
Transferred over Time [Member]
Total revenue from contracts with customers	375	370	676	455
UNITED STATES
Total revenue from contracts with customers	492	107	837	499
Europe [Member]
Total revenue from contracts with customers	6,298	2,557	9,083	9,057
Asia Pacific [Member]
Total revenue from contracts with customers	2,647	4,850	8,490	8,432
Other Countries [Member]
Total revenue from contracts with customers	$ 599	$ 47	$ 1,304	$ 170