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Severance and Other Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2013
Accrual balance at the beginning of the period	$ 330
Severance charges accrued	212
Severance costs paid	409
Accrual balance as of April 30, 2013	$ 133

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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