Restricted Cash - Summary of Allocation of Restricted Cash (Details) - USD ($) $ in Thousands		Oct. 31, 2021	Oct. 31, 2020
Restricted Cash.
Cash Restricted for Outstanding Letters of Credit	[1]	$ 6,478	$ 6,543
Cash Restricted for PNC Sale-Leaseback Transactions	[2]	5,514	15,125
Cash Restricted for Crestmark Sale-Leaseback Transaction	[3]	2,887	431
Bridgeport Fuel Cell Park Project Debt Service and Performance Reserves	[4]	11,937	7,549
Orion Facility - Reserves and Project Proceeds Account	[5]		11,193
Other		1,183	1,344
Total Restricted Cash		27,999	42,185
Restricted Cash and Cash Equivalents - Short-Term	[6]	(11,268)	(9,233)
Restricted cash and cash equivalents - long-term		$ 16,731	$ 32,952

[1] Letters of credit outstanding as of October 31, 2021 expire on various dates through August 2028.

[2] Long and short-term reserve that is to be used primarily to fund future module exchanges for operating projects falling under the PNC sale leaseback obligations. The decrease in restricted cash at October 31, 2021 compared to October 31, 2020 is a result of the Company’s performance in completing certain module exchanges resulting in cash being unrestricted.

[3] Long and short-term reserve that is to be used primarily to fund future module exchanges and other performance obligations.  The increase in restricted cash at October 31, 2021 compared to October 31, 2020 is a result of additional cash reserved for the San Bernardino sale-leaseback transaction with Crestmark which was entered into on August 25, 2021.

[4] Long and short-term reserves for the Bridgeport Fuel Cell Park Project to fund future module exchanges and other performance requirements.

[5] Reserves relating to the Orion Facility were released upon the repayment of the Orion Facility.

[6] 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.