Stock-Based Benefit Plans (Details Textual) (USD $)	9 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Jul. 31, 2012	Oct. 31, 2011	Jul. 31, 2012 Performance Based Restricted Stock Units [Member]	Jul. 31, 2012 Non-Performance Based Restricted Stock Units [Member]	Jul. 31, 2012 Stock Price Based Restricted Stock Units [Member]	Jul. 31, 2012 Stock Price Based Restricted Stock Units [Member]
Stock Based Benefit Plans (Textual) [Abstract]
Minimum percentage of units issued to the recipients of the base award	90.00%
Maximum percentage of units issued to the recipients of the base award	110.00%
RSU vesting period			4 years	4 years
Number of consecutive trading days						20 days
Average closing price of company common stock						measured over any 20 consecutive trading days ending on or prior to five years from date of issuance
Period of issuance of stock price based RSU						5 years
Stock Based Benefit Plans (Additional Textual) [Abstract]
Aggregate unamortized value of outstanding stock based compensation awards	$ 17,300,000	$ 12,700,000
Percentage increases over closing price						30.00%
gross value of stock awarded related to restricted stock units					5,934,000
Gross shares awarded related to restricted stock					200,000
Value of shares withheld for income taxes on restricted shares issued					2,409,000
Shares withheld for income taxes related to share issued for RSU					81,200
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			$ 7,503,000		$ 3,525,000
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures					118,800