Reconciliation of Numerator and Denominator of the basic and diluted earnings per share computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Equity [Abstract]
Net income	$ 6,353	$ 8,129	$ 8,796	$ 13,068
Basic weighted average shares	17,211	17,081	17,217	17,063
Effect of dilutive securities:
Stock options	25	77	31	85
Diluted weighted average shares	17,236	17,158	17,248	17,148
Basic earnings per share	$ 0.37	$ 0.48	$ 0.51	$ 0.77
Diluted earnings per share	$ 0.37	$ 0.47	$ 0.51	$ 0.76