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, 2020	Jan. 31, 2020	Apr. 30, 2019	Jan. 31, 2019	Apr. 30, 2020	Apr. 30, 2019
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		972		108
Net loss available to common stockholders	$ (58,707)		$ 1,112		$ (62,387)	$ (3,586)
Basic weighted average number of common shares	23,785		23,516		23,719	23,450
Restricted stock units and stock options (1)	0		43		0	0
Diluted weighted average number of common shares	23,785		23,559		23,719	23,450
Basic loss per share	$ (2.47)		$ 0.05		$ (2.63)	$ (0.15)
Diluted loss per share	$ (2.47)		$ 0.05		$ (2.63)	$ (0.15)