Note 6 - Share-Based Compensation (Detail) - Summary of Stock Option Activity (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Oct. 31, 2012
Shares	3,111	3,010
Weighted Average Exercise Price (in Dollars per share)	$ 13.44	$ 14.68
Weighted Average Remaining Contractual Term	6 years 109 days
Aggregate Intrinsic Value (in Dollars)	$ 11,922
Fully vested and expected to vest at Janaury 31, 2013	3,051
Fully vested and expected to vest at Janaury 31, 2013 (in Dollars per share)	$ 13.46
Fully vested and expected to vest at Janaury 31, 2013	6 years 73 days
Fully vested and expected to vest at Janaury 31, 2013 (in Dollars)	11,794
Exercisable at January 31, 2013	1,935
Exercisable at January 31, 2013 (in Dollars per share)	$ 14.45
Exercisable at January 31, 2013	4 years 219 days
Exercisable at January 31, 2013 (in Dollars)	$ 8,385
Granted	522
Granted (in Dollars per share)	$ 13.13
Exercised	(87)
Exercised (in Dollars per share)	$ 6.13
Forfeited	(5)
Forfeited (in Dollars per share)	$ 15.09
Expired	(329)
Expired (in Dollars per share)	$ 26.21