Note 12 - Segment Reporting - Reconciliation of Assets from Segment to Consolidated (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Jan. 31, 2025	Apr. 30, 2024
Assets	$ 36,226	$ 36,720	$ 34,863
Operating Segments [Member] \| Seamap Marine Products [Member]
Assets	35,574		34,065
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Assets	$ 652		$ 798

Amount of asset recognized for present right to economic benefit.

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+ Details