Revenue Recognition - Additional Information (Details) - USD ($)	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Nov. 01, 2019	Nov. 01, 2018
Disaggregation Of Revenue [Line Items]
Contract asset	$ 16,900,000	$ 11,300,000
Transferred to accounts receivable	5,900,000	6,600,000
Contract liability	41,900,000	40,200,000
Accumulated deficit	(1,164,196,000)	(1,075,089,000)	$ 0
Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Accumulated deficit		$ (9,300,000)		$ (6,600,000)
Service Agreements [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	146,800,000
Licensing Agreements [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	22,200,000
Advanced Technologies Contracts [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligations	49,200,000
Posco Energy
Disaggregation Of Revenue [Line Items]
Deferred revenue	$ 22,200,000