Subsequent Events (Details)		1 Months Ended
	Dec. 20, 2021 USD ($) D item	Nov. 30, 2021 USD ($) MW	Dec. 23, 2021 USD ($)	Oct. 31, 2021 USD ($)	Oct. 31, 2020 USD ($)
Subsequent Events
Amount of contractual Obligation				$ 2,200,000	$ 2,200,000
POSCO Energy Settlement Agreement
Subsequent Events
Percentage of maximum annual reimbursement obligation	7.50%
Number of firm, non-cancelable orders | item	12
Subsequent Event [Member] | POSCO Energy Settlement Agreement
Subsequent Events
Period within which an application should be filed	5 days
Outstanding accounts receivable	$ 11,200,000
Litigation settlement agreement termination notice period | D	60
Number of days notice of breach for license agreement | D	15
Warrant period against module defect from the date of shipment.	18 months
Warrant period against module defect from the date of installation	12 months
Period for reimbursement due to shortfall or defect	7 years
Number of weeks within which the orders to be placed | item	2
Price per module of the orders to be placed	$ 3,000,000.0
Period of right of first refusal on operation and maintenance services	24 months
Number of balance of plant units | item	8
Purchase price per unit of balance of plant units	$ 2,550,000,000
Contingent liability	$ 1,800,000
Amount of contractual Obligation			$ 24,000,000.0
Amount of contractual obligation to be paid on fiscal year			14,000,000.0
Subsequent Event [Member] | POSCO Energy Settlement Agreement | Settlement agreement orders on or before March 31, 2022
Subsequent Events
Amount of contractual obligation to be paid three months			5,000,000.0
Subsequent Event [Member] | POSCO Energy Settlement Agreement | Settlement agreement orders on or before June 30, 2022
Subsequent Events
Number of additional firm, non-cancelable orders to be placed | item	8
Price per module of the orders to be placed	$ 3,000,000.0
Amount of contractual obligation to be paid in next six months			$ 5,000,000.0
Subsequent Event [Member] | POSCO Energy Settlement Agreement | Settlement agreement orders on or before December 31, 2022
Subsequent Events
Number of additional firm, non-cancelable orders to be placed	14,000,000
Price per module of the orders to be placed	$ 3,000,000.0
Subsequent Event [Member] | Franklin Park Tax Equity Financing Transaction [Member]
Subsequent Events
Capacity of plant | MW		7.4
Tax equity financing commitment		$ 12,400,000
Initial draw		3,200,000
Closing costs		400,000
Remaining amount of draw		$ 9,200,000
Percentage of cash and tax allocations to be received		95.00%
Percentage of amount payable		9.60%