Statement of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (19,530)	$ (13,174)	$ (37,078)	$ (17,357)
Foreign currency translation adjustments	(140)	54	(133)	87
Total comprehensive loss	$ (19,670)	$ (13,120)	$ (37,211)	$ (17,270)

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

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