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Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Apr. 30, 2026 | Apr. 30, 2025 | Jan. 31, 2026
Disaggregation of Revenue [Line Items] |  |  |
Contract liabilities and extended warranties | $ 393 |  | $ 489
Revenue recognized | $ 219 |  |
Capitalized contract costs amounts incurred amortization period | 15 years |  |
Contract assets balance |  |  | 1,400
Amortization of incremental direct costs | $ 23 | $ 23 |
Deferred incremental direct costs net of accumulated amortization balance | 1,400 |  |
Deferred incremental direct contract costs reported in other current assets | 100 |  |
Deferred Revenue | 393 |  | $ 489
Aerospace Customer [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Deferred incremental direct contract costs reported in other assets | $ 1,300 |  |

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