Stock-Based Benefit Plans (Details 9) (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 Non-Performance Based Restricted Stock Units [Member]	Oct. 31, 2011 Non-Performance Based Restricted Stock Units [Member]	Oct. 31, 2010 Non-Performance Based Restricted Stock Units [Member]	Dec. 20, 2011 Non-Performance Based Restricted Stock Units [Member]	Dec. 20, 2010 Non-Performance Based Restricted Stock Units [Member]	Dec. 21, 2009 Non-Performance Based Restricted Stock Units [Member]
Summary of aggregate number and unamortized value of outstanding stock price based RSUs
Issuance of restricted stock and stock units, shares					107,820	15,497	19,663
Closing price of the Company's common stock on date of issuance				$ 21.70				$ 20.50	$ 19.32	$ 18.38
Estimated fair value of restricted stock units issued					$ 2,210	$ 299	$ 361
RSU expense recognized	15,575	12,548	9,689		156	144	138
Aggregate outstanding RSUs					137,764	30,994	19,663
Unamortized value of stock compensation	$ 14,200	$ 12,700	$ 11,100		$ 1,326	$ 379	$ 224