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Severance and Other Restructuring Costs - Change in Severance Liability (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Apr. 30, 2015
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Apr. 30, 2014
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| Restructuring and Related Activities [Abstract] | ||
| Accrual balance at the beginning of the period | $ 2,021us-gaap_RestructuringReserve | |
| Restructuring charges incurred | 212us-gaap_RestructuringCharges | 474us-gaap_RestructuringCharges |
| Severance costs paid | (2,037)us-gaap_PaymentsForRestructuring | |
| Other charges | (65)us-gaap_RestructuringReservePeriodIncreaseDecrease | |
| Accrual balance at the ending of the period | $ 131us-gaap_RestructuringReserve | |
| X | ||||||||||
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- Definition
Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- 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://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net total Increase or Decrease in the accrual for restructuring costs during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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