Stock Based Benefit Plans (Details 7) (USD $)	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
RSUs issued
Aggregate fair value of Performance-Based RSU's issued	$ 8,102,000	$ 22,000	$ 27,000
RSU expense recognized
RSU expense recognized	8,626,000	9,332,000	10,925,000
Performance Based Restricted Stock Units [Member]
RSUs issued
Issuance of restricted stock and stock units, shares	306,000	200,000	200,000
Closing price of the Company's common stock on date of issuance	$ 19.32	$ 18.38	$ 21.70
Target price	$ 25.12	$ 23.89	$ 28.21
Expected volatility	48.22%	49.92%	48.14%
Risk-free interest rate	1.99%	2.43%	1.35%
Expected life (years)	3.0	3.0	3.0
Aggregate fair value of Performance-Based RSU's issued	4,994,000	3,160,000	3,642,000
RSU expense recognized
RSU expense recognized	3,701,000	2,121,000	1,045,000
Aggregate outstanding RSU's	706,000	400,000	200,000
Cumulative unamortized value of RSU's	4,929,000	3,636,000	2,597,000
Non Performance Based Restricted Stock Units [Member]
RSUs issued
Issuance of restricted stock and stock units, shares	15,497	19,663
Closing price of the Company's common stock on date of issuance	$ 19.32	$ 18.38
Aggregate fair value of Performance-Based RSU's issued	299,000	361,000
Non-Performance-Based RSU expense recognized [Member]
RSU expense recognized
RSU expense recognized	144,000	138,000
Aggregate outstanding RSU's	30,994	19,663
Cumulative unamortized value of RSU's	$ 379,000	$ 224,000