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, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Equity [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			481	85
Net income (loss)	$ 3,057	$ 6,353	$ (2,002)	$ 8,796
Basic weighted average shares	17,615	17,211	17,615	17,217
Effect of dilutive securities:
Stock options	5	25	0	31
Diluted weighted average shares	17,620	17,236	17,615	17,248
Basic earnings (loss) per share	$ 0.17	$ 0.37	$ (0.11)	$ 0.51
Diluted earnings (loss) per share	$ 0.17	$ 0.37	$ (0.11)	$ 0.51