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		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Equity [Abstract]
Net income	$ 1,981	$ 8,349	$ 10,777	$ 21,417
Basic weighted average shares	17,227	17,118	17,220	17,081
Effect of dilutive securities:
Stock options	19	57	27	76
Diluted weighted average shares	17,246	17,175	17,247	17,157
Basic earnings per share	$ 0.11	$ 0.49	$ 0.63	$ 1.25
Diluted earnings per share	$ 0.11	$ 0.49	$ 0.62	$ 1.25