Note 8 - Earnings Per Share (Detail) - Shares Used to Compute Basic and Diluted Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2013	Jan. 31, 2012
Net income available to common shares (in Dollars)	$ 7,064	$ 7,649
Basic
Weighted average shares, basic	56,680	55,064
Dilutive effect of options	681	589
Weighted average shares, diluted	57,361	55,653
Basic earnings per share (in Dollars per share)	$ 0.12	$ 0.14
Diluted earnings per share (in Dollars per share)	$ 0.12	$ 0.14
Weighted average anti-dilutive shares excluded from diluted EPS	1,586	2,946