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Severance and Other Restructuring Costs (Details) (Employee Severance [Member], USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended |
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Oct. 31, 2012
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Oct. 31, 2012
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Employee Severance [Member]
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| Accrual balance at the beginning of the period | $ 720 | $ 2,225 |
| Severance charges accrued | 870 | 1,428 |
| Severance costs paid | (825) | (2,888) |
| Accrual balance as of October 31, 2012 | $ 765 | $ 765 |
| 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
Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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