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Subsequent Events	6 Months Ended
	Jul. 31, 2011
Subsequent Events
Subsequent Events	12. Subsequent Events Subsequent to July 31, 2011 and through August 29, 2011, the Company repurchased and retired the remaining 3,326,354 common shares under the November 2010 authorization for approximately $88,181, including commissions, at an average price of $26.51 per share. On August 25, 2011, the Company's Board of Directors authorized the repurchase of an additional 10,000,000 common shares under the Company's stock repurchase program. Subsequent to this authorization and through September 6, 2011, the Company has repurchased and retired 429,292 common shares for approximately $10,851, including commissions, at an average price of $25.28 per share. As of September 6, 2011, there were 9,570,708 common shares remaining available for repurchase under the August 2011 authorization.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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