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Reclassifications (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Reclassifications [Line Items]
General and administration	$ 18,917	$ 16,965	$ 52,452	$ 51,702
Special charges	4,688	1,975	12,570	6,406
Previously Reported
Reclassifications [Line Items]
General and administration		17,794		54,308
Special charges		$ 1,146		$ 3,800

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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