Restricted Cash	3 Months Ended
Jan. 31, 2020
Restricted Cash And Investments [Abstract]
Restricted Cash	Note 15. Restricted Cash As of January 31, 2020 and October 31, 2019, there was $35.7 million and $30.3 million, respectively, of restricted cash and cash equivalents pledged as performance security and for letters of credit for certain banking requirements and contracts. As of January 31, 2020 and October 31, 2019, outstanding letters of credit totaled $5.7 million and $5.7 million, respectively. The letters of credit outstanding as of January 31, 2020 expire on various dates through August 2028. Under the terms of certain contracts, we will provide performance security for future contractual obligations. The restricted cash balance as of January 31, 2020 and October 31, 2019 includes $18.1 million and $17.9 million, respectively, to support obligations under the power purchase and service agreements related to the PNC sale-leaseback transactions and $5.9 million and $4.9 million, respectively, relating to future obligations associated with the Bridgeport Fuel Cell Project. The restricted cash balance as of January 31, 2020 also includes a $5.0 million reserve established in accordance with the Orion Facility. This balance may become unrestricted upon the achievement of certain performance milestones related to the Groton project, including achievement of the project’s expected performance upon commercial operations and sourcing of third party debt and tax equity financing in excess of $30 million.

Restricted Cash

3 Months Ended

Jan. 31, 2020

Restricted Cash And Investments [Abstract]

Note 15. Restricted Cash

As of January 31, 2020 and October 31, 2019, there was $35.7 million and $30.3 million, respectively, of restricted cash and cash equivalents pledged as performance security and for letters of credit for certain banking requirements and contracts. As of January 31, 2020 and October 31, 2019, outstanding letters of credit totaled $5.7 million and $5.7 million, respectively. The letters of credit outstanding as of January 31, 2020 expire on various dates through August 2028. Under the terms of certain contracts, we will provide performance security for future contractual obligations. The restricted cash balance as of January 31, 2020 and October 31, 2019 includes $18.1 million and $17.9 million, respectively, to support obligations under the power purchase and service agreements related to the PNC sale-leaseback transactions and $5.9 million and $4.9 million, respectively, relating to future obligations associated with the Bridgeport Fuel Cell Project. The restricted cash balance as of January 31, 2020 also includes a $5.0 million reserve established in accordance with the Orion Facility. This balance may become unrestricted upon the achievement of certain performance milestones related to the Groton project, including achievement of the project’s expected performance upon commercial operations and sourcing of third party debt and tax equity financing in excess of $30 million.