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Severance and Other Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2013
Accrual balance as of January 31, 2012	$ 2,225
Severance charges accrued	1,884
Severance costs paid	(3,779)
Accrual balance as of January 31, 2013	$ 330

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.

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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.

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