Reconciliation of Numerator and Denominator of the basic and diluted earnings per share computation (Details) (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
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income available to common stockholders	$ 5,282	$ 2,416	$ 15,115	$ 9,899
Basic weighted average shares	17,007	16,856	16,998	16,821
Stock options	44	82	47	71
Diluted weighted average shares	17,051	16,927	17,045	16,903
Basic earnings per share	$ 0.31	$ 0.14	$ 0.89	$ 0.59
Diluted earnings per share	$ 0.31	$ 0.14	$ 0.89	$ 0.59