Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2015 |
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| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Benefit payments related to plan | $ 0.2 | ||
| Retirement Savings Plan [Member] | |||
| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Defined contribution plan, cost recognized | $ 1.4 | $ 1.5 | $ 1.7 |
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- Definition Pension Plans, Postretirement and Other Employee Benefits [Line Items] No definition available.
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- Definition Amount of benefits from a defined benefit plan expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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- Details
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