Severance and Other Restructuring Costs - Additional Information (Detail) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
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Sep. 10, 2018
USD ($)
|
Oct. 31, 2018
USD ($)
|
Oct. 31, 2017
USD ($)
|
Oct. 31, 2018
USD ($)
Employee
|
Oct. 31, 2017
USD ($)
|
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| Restructuring Cost and Reserve [Line Items] | |||||
| Severance and other restructuring costs | $ 1,030 | $ 960 | $ 1,620 | $ 3,670 | |
| Additional severance charges | $ 100 | $ 700 | |||
| Number of employees terminated | Employee | 17 | ||||
| Severance costs | $ 200 | $ 200 | |||
| Restructuring Plan [Member] | |||||
| Restructuring Cost and Reserve [Line Items] | |||||
| Total restructuring charges incurred | $ 7,100 | ||||
| Annualized cost savings | $ 6,000 | ||||
| Severance and other restructuring costs | $ 1,000 | ||||
| X | ||||||||||
- Definition Additional Severance Charges No definition available.
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- Definition Number Of Employees Terminated 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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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- 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 Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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