Note 17 - Segment Reporting - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024
Operating income (loss)	$ 6,818	$ 518
Interest income (expense)	4	(634)
Other income	236	354
Income from continuing operations before income taxes	7,058	238
Operating Segments [Member] | Seamap Marine Products [Member]
Operating income (loss)	12,138	7,409
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Operating income (loss)	$ (5,320)	$ (6,891)