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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

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