Employee Benefit Plans - Components of Net Periodic Benefit Cost of the Pension Plan (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
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Jan. 31, 2017 |
Jan. 31, 2016 |
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| Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract] | ||
| Service cost | $ 238 | $ 288 |
| Interest cost | 54 | 51 |
| Actuarial gain | (801) | (435) |
| Net periodic benefit cost | $ (509) | $ (96) |
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- References No definition available.
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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