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Fair Value - Schedule of Company's Long-Term Debt Including the Current Portion Not Reflected in Financial Statements at Fair Value (Detail) - USD ($) $ in Thousands | Apr. 30, 2026 | Jan. 31, 2026
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Fair Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-Term debt and related current maturities | $ 20,723 | $ 21,565
Fair Value [Member] | Level 3 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-Term debt and related current maturities | 20,723 | 21,565
Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Long-Term debt and related current maturities | $ 20,605 | $ 21,436

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