Note 6 - Share-Based Compensation (Details) - Compensation Costs (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation cost	$ 1,656	$ 1,014	$ 4,543	$ 3,063
Related tax benefit	(584)	(375)	(1,596)	(1,088)
Employee Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation cost	602	363	1,737	1,366
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Compensation cost	$ 1,054	$ 651	$ 2,806	$ 1,697