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Restricted Cash - Summary of Allocation of Restricted Cash (Details) - USD ($) $ in Thousands | Jan. 31, 2021 | Oct. 31, 2020
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Restricted Cash And Investments [Abstract] |  |  |
Cash Restricted for Outstanding Letters of Credit | [1] | $ 6,478 | $ 6,543
Cash Restricted for PNC Sale-Leaseback Transactions |  | 13,031 | 15,125
Cash Restricted for Crestmark Sale-Leaseback Transaction |  | 431 | 431
Bridgeport Fuel Cell Park Project Debt Service and Performance Reserves |  | 10,457 | 7,549
Orion Facility - Performance Reserve | [2] |  | 5,000
Orion Facility - Module and Debt Service Reserves | [3] |  | 1,950
Orion Facility - Project Proceeds Account | [4] |  | 4,243
Other |  | 627 | 1,344
Total Restricted Cash |  | 31,024 | 42,185
Restricted Cash and Cash Equivalents - Short-Term | [5] | (12,252) | (9,233)
Restricted cash and cash equivalents - long-term |  | $ 18,772 | $ 32,952
[1] | Letters of credit outstanding as of January 31, 2021 expire on various dates through August 2028.
[2] | Short-term reserve related to certain project construction and financing milestones.
[3] | Long-term reserve to be used primarily to fund future module replacements for operating projects falling under the collateral pool (CCSU and Triangle Street) under the Orion Facility.
[4] | Reserve related to proceeds received from project refinancing to be used to pay-down the Orion Facility unless redeployed into other project financing (at the option of the Orion Agent and the lenders under the Orion Facility).
[5] | Short-term restricted cash and cash equivalents are amounts expected to be released and categorized as unrestricted cash within twelve months of the balance sheet date.

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