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Stock-Based Benefit Plans (Details 7) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended				12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Dec. 19, 2008	Oct. 31, 2012 Performance Based Restricted Stock Units [Member]	Dec. 20, 2011 Performance Based Restricted Stock Units [Member]
Performance-Based Restricted Stock Units
Issuance of restricted stock and stock units, shares					370,176
Closing price of the Company's common stock on date of issuance				$ 21.70		$ 20.50
Estimated fair value of restricted stock units issued					$ 7,589
Stock based expense recognized	15,575	12,548	9,689		3,953
Unamortized value of stock compensation	$ 14,200	$ 12,700	$ 11,100		$ 3,636

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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