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Employee Benefit Plan - Additional Information (Detail) (USD $)
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12 Months Ended | ||
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Jan. 31, 2014
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Jan. 31, 2013
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Jan. 31, 2012
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| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Interest costs | $ 33,000 | $ 34,000 | |
| Service cost | 200,000 | 200,000 | |
| Unfunded projected benefit obligation | 700,000 | 600,000 | |
| Benefit payments related to plan | 300,000 | ||
| Benefit obligation, projected discount rate | 5.90% | 6.00% | |
| Periodic benefit costs, projected discount rate | 5.90% | 6.00% | |
| Benefit obligation, compensation increase rate | 7.00% | 8.00% | |
| Periodic benefit costs, compensation increase rate | 7.00% | 8.00% | |
| Periodic benefit costs | 200,000 | 200,000 | 100,000 |
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Retirement Savings Plan [Member]
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| Pension Plans, Postretirement and Other Employee Benefits [Line Items] | |||
| Defined contribution plan, cost recognized | $ 1,700,000 | $ 1,400,000 | $ 1,100,000 |
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- Details
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- Definition
The interest rate used to adjust for the time value of money for the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expected rate of compensation increases (for pay-related plans). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The interest rate used to adjust for the time value of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expected rate of compensation increases (for pay-related plans). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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