Note 6 - Share-Based Compensation (Detail) - Summary of Stock Option Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Jul. 31, 2012	Jul. 31, 2012
Outstanding at November 1, 2011		4,638
Outstanding at November 1, 2011 (in Dollars per share)		$ 14.04
Granted		440
Granted (in Dollars per share)		$ 12.20
Exercised	(200)	(1,495)
Exercised (in Dollars per share)		$ 10.86
Forfeited or expired		(338)
Forfeited or expired (in Dollars per share)		$ 17.51
Outstanding at July 31, 2012	3,245	3,245
Outstanding at July 31, 2012 (in Dollars per share)	$ 14.90	$ 14.90
Outstanding at July 31, 2012		5 years 219 days
Outstanding at July 31, 2012 (in Dollars)	$ 12,093	$ 12,093
Fully vested and expected to vest at July 31, 2012	3,213	3,213
Fully vested and expected to vest at July 31, 2012 (in Dollars per share)	$ 14.93	$ 14.93
Fully vested and expected to vest at July 31, 2012		5 years 6 months
Fully vested and expected to vest at July 31, 2012 (in Dollars)	11,991	11,991
Exercisable at July 31, 2012	2,165	2,165
Exercisable at July 31, 2012 (in Dollars per share)	$ 17.29	$ 17.29
Exercisable at July 31, 2012		4 years 36 days
Exercisable at July 31, 2012 (in Dollars)	$ 7,209	$ 7,209