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v3.20.1

Segment Reporting - Reconciliation of Operating Income (Loss) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Consolidated operating income | $ (10,375) | $ (13,020) | $ (19,708)
Operating segments | Marine Technology Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Consolidated operating income | (2,259) | (3,780) | (2,572)
Operating segments | Equipment Leasing |  |  |
Segment Reporting Information [Line Items] |  |  |
Consolidated operating income | (4,667) | (5,872) | (13,930)
Corporate expenses |  |  |
Segment Reporting Information [Line Items] |  |  |
Consolidated operating income | (3,471) | (3,375) | (3,211)
Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Consolidated operating income | $ 22 | $ 7 | $ 5

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