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, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Equity [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			7	481
Net income (loss)	$ 4,229	$ 4,209	$ 2,211	$ (918)
Basic weighted average shares	17,858	17,615	17,788	17,615
Effect of dilutive securities:
Stock options	30	5	21	0
Diluted weighted average shares	17,888	17,620	17,809	17,615
Basic income (loss) per share	$ 0.24	$ 0.24	$ 0.12	$ (0.05)
Diluted income (loss) per share	$ 0.24	$ 0.24	$ 0.12	$ (0.05)