Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Oct. 31, 2020
Finite Lived Intangible Assets [Line Items]
Gross Amount	$ 21,912	$ 21,912
Accumulated Amortization	(2,594)	(1,945)
Net Amount	19,318	19,967
Bridgeport PPA [Member]
Finite Lived Intangible Assets [Line Items]
Gross Amount	12,320	12,320
Accumulated Amortization	(2,594)	(1,945)
Net Amount	9,726	10,375
In Process Research And Development [Member]
Finite Lived Intangible Assets [Line Items]
Gross Amount	9,592	9,592
Net Amount	$ 9,592	$ 9,592