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v3.20.2

Leases - Additional Information (Details) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Feb. 11, 2020 USD ($) MW | Jul. 31, 2020 USD ($) | Jul. 31, 2019 USD ($) | Jul. 31, 2020 USD ($) | Jul. 31, 2019 USD ($) | Nov. 01, 2019 USD ($) | Oct. 31, 2019 USD ($)
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating lease ROU asset |  | $ 10,316,000 |  | $ 10,316,000 |  | $ 10,100,000 |
Operating lease liability |  | 10,876,000 |  | 10,876,000 |  | 10,300,000 |
Adoption of new lease accounting standard, impact on accumulated deficit |  |  |  |  |  | 0 |
Finance lease ROU assets |  | $ 100,000 |  | $ 100,000 |  |  |
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] |  | us-gaap:PropertyPlantAndEquipmentNet |  | us-gaap:PropertyPlantAndEquipmentNet |  |  |
Finance lease, liability |  | $ 56,000 |  | $ 56,000 |  |  |
Finance Lease, Liability, Statement of Financial Position [Extensible List] |  | us-gaap:OtherLiabilitiesNoncurrent |  | us-gaap:OtherLiabilitiesNoncurrent |  |  |
Operating lease expense |  | $ 200,000 |  | $ 478,000 | $ 0 |  |
Operating lease, weighted average remaining lease term |  | 20 years |  | 20 years |  |  |
Operating lease, weighted average discount rate |  | 6.20% |  | 6.20% |  |  |
Operating lease, payments |  | $ 200,000 |  | $ 737,000 | 0 |  |
Sale leaseback transaction, net book value |  | $ 74,800,000 |  | 74,800,000 |  |  | $ 59,200,000
Crestmark Sale-Leaseback Transaction [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Down payment and an initial rental payment under lease | $ 2,900,000 |  |  |  |  |  |
Initial term of lease | 10 years |  |  |  |  |  |
Monthly lease payments due | $ 100,000 |  |  |  |  |  |
Remaining lease payments due | 9,300,000 |  |  | $ 8,800,000 |  |  |
Central CA Fuel Cell 2, LLC [Member] | Crestmark Sale-Leaseback Transaction [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Sale leaseback transaction, net book value | 14,400,000 |  |  |  |  |  |
Down payment and an initial rental payment under lease | 2,900,000 |  |  |  |  |  |
Taxes and transaction costs | 1,000,000.0 |  |  |  |  |  |
Net proceeds | 10,500,000 |  |  |  |  |  |
Net proceeds deposited into project proceeds account | 6,500,000 |  |  |  |  |  |
Net proceeds deposited into module reserve account and debt services reserve account | 1,200,000 |  |  |  |  |  |
Quarterly cash interest due to lenders | $ 2,800,000 |  |  |  |  |  |
Purchase and Sale Agreement [Member] | Central CA Fuel Cell 2, LLC [Member] | Crestmark Sale-Leaseback Transaction [Member] | Tulare BioMAT [Member] | California [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Capacity of plant | MW | 2.8 |  |  |  |  |  |
ASC 842 [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating lease ROU asset |  |  |  |  |  | 10,100,000 |
Operating lease liability |  |  |  |  |  | $ 10,300,000 |
Operating lease expense |  |  | $ 200,000 |  | $ 700,000 |  |
Minimum [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating and finance lease, remaining lease term |  |  |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |  |  |
Lessee Lease Description [Line Items] |  |  |  |  |  |  |
Operating and finance lease, remaining lease term |  |  |  | 26 years |  |  |

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