Earnings Per Share 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, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			108	308
Net income (loss) available to common stockholders	$ 1,112	$ 4,025	$ (3,586)	$ 8,883
Basic weighted average number of common shares	23,516	23,222	23,450	23,164
Restricted stock units and stock options (1)	43	135	0	147
Diluted weighted average number of common shares	23,559	23,357	23,450	23,311
Basic earnings (loss) per share	$ 0.05	$ 0.17	$ (0.15)	$ 0.38
Diluted earnings (loss) per share	$ 0.05	$ 0.17	$ (0.15)	$ 0.38