Note 8 - Earnings Per Share (Details) - Shares Used to Compute Basic and Diluted Earnings Per Share (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Shares Used to Compute Basic and Diluted Earnings Per Share [Abstract]
Net income available to common shares (in Dollars)	$ 6,409	$ 10,424	$ 25,313	$ 27,808
Basic
Weighted average shares, basic	57,117	56,284	56,927	55,700
Dilutive effect of options and non-participating securities	672	745	696	745
Weighted average shares, diluted	57,789	57,029	57,623	56,445
Basic earnings per share (in Dollars per share)	$ 0.11	$ 0.19	$ 0.44	$ 0.50
Diluted earnings per share (in Dollars per share)	$ 0.11	$ 0.18	$ 0.44	$ 0.49
Weighted average anti-dilutive shares excluded from diluted EPS	1,103	1,593	1,424	1,981