Income Taxes - Schedule of Components of Loss Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Income Taxes
U.S.	$ (96,959)	$ (85,865)	$ (74,133)
Foreign	(4,064)	(3,196)	(3,326)
Loss before provision for income taxes	$ (101,023)	$ (89,061)	$ (77,459)