Commitments and Contingencies - Additional Information (Detail) - Ransomware Attack [Member] $ in Millions |
3 Months Ended |
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Apr. 30, 2020
USD ($)
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| Accrued Expenses [Member] | |
| Loss Contingencies [Line Items] | |
| Loss contingency | $ 0.8 |
| Prepaid Expenses and Other Current Assets [Member] | |
| Loss Contingencies [Line Items] | |
| Insurance recovery proceeds | $ 0.8 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash inflow from the collection of receivables related to a loss contingency. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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