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, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Equity [Abstract]
Net income	$ 8,349	$ 5,282	$ 21,417	$ 15,115
Basic weighted average shares	17,118	17,007	17,081	16,998
Effect of dilutive securities:
Stock options	57	44	76	47
Diluted weighted average shares	17,175	17,051	17,157	17,045
Basic earnings per share	$ 0.49	$ 0.31	$ 1.25	$ 0.89
Diluted earnings per share	$ 0.49	$ 0.31	$ 1.25	$ 0.89
Adjustment to estimated deferred taxes associated with pension adjustments included in accumulated other comprehensive income	86	0	191	0
Unrealized gain on marketable securities	251	0	318	0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(282)	0	(843)	0
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ (1,433)	$ 0	$ (1,433)	$ 0