Consolidated Statement of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (14,769)	$ (19,530)	$ (54,920)	$ (37,078)
Foreign currency translation adjustments	(42)	(140)	(91)	(133)
Total comprehensive loss	$ (14,811)	$ (19,670)	$ (55,011)	$ (37,211)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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