Nature of Business and Basis of Presentation - Additional Information (Detail) $ in Millions |
3 Months Ended |
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Apr. 30, 2019
USD ($)
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| Restructuring Plan [Member] | Minimum [Member] | |
| Significant Accounting Policies [Line Items] | |
| Annualized cost savings | $ 6 |
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- Definition Significant Accounting Policies [Line Items] No definition available.
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- Definition The quantified amount of the future effect on earnings. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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- Details
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