Note 17 - Segment Reporting - Schedule of Segment Reporting Information, By Segment (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
Cost of sales	25,896	20,539
Selling, general and administrative	11,291	12,142
Research and development	1,914	2,133
Depreciation and amortization expense	944	1,178
Operating income (loss)	6,818	518
Capital expenditures	437	290
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0
Cost of sales	0	0
Selling, general and administrative	4,998	6,335
Research and development	304	538
Depreciation and amortization expense	18	18
Operating income (loss)	(5,320)	(6,891)
Capital expenditures	21	3
Seamap Marine Products [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	46,863	36,510
Cost of sales	25,896	20,539
Selling, general and administrative	6,293	5,807
Research and development	1,610	1,595
Depreciation and amortization expense	926	1,160
Operating income (loss)	12,138	7,409
Capital expenditures	$ 416	$ 287