Subsequent Events	3 Months Ended
Jan. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Note 17. Subsequent Events Construction Loan Agreement On February 28, 2019, the Company, through its indirect wholly-owned subsidiary Groton Station Fuel Cell, LLC (“Groton Borrower”), entered into a Construction Loan Agreement (the “Construction Loan Agreement”) with Fifth Third Bank (“Fifth Third”) pursuant to which Fifth Third agreed to make available to Groton Borrower a construction loan facility in an aggregate principal amount of up to $23.0 million (the “Groton Facility”) to fund the manufacture, construction, installation, commissioning and start-up of the 7.4 megawatt fuel cell power plant for the Connecticut Municipal Electric Energy Cooperative located on the U.S. Navy submarine base in Groton, Connecticut (the “Groton Project”). Groton Borrower made an initial draw under the Groton Facility on the date of closing of $9.6 million. Amounts borrowed under the Groton Facility bear interest at a rate equal to the sum of the one-month LIBOR Rate plus 2.25 %. Regular monthly payments are interest-only. Amounts borrowed under the Groton Facility may be prepaid at any time without penalty. The maturity date of the Groton Facility will be the earlier of (a) October 31, 2019, (b) the commercial operation date of the Groton Project, or (c) one business day after receipt of proceeds of debt financing (i.e., take out financing) in an amount sufficient to repay the outstanding indebtedness under the Groton Facility. Mandatory prepayments are required in the event of material damage or destruction to the Groton Project or a change of control of Groton Borrower. The Company has agreed to guarantee Groton Borrower’s obligations under the Construction Loan Agreement. In addition, Groton Borrower’s obligations under the Construction Loan Agreement are secured by a first mortgage lien on Groton Borrower’s leasehold interest in the Groton Project site, a security interest in the Groton Project assets, including material Groton Project related contracts such as the power purchase agreement and EPC agreement, and the Company’s equity interest in the Groton Borrower. The Construction Loan Agreement contains customary representations and warranties, affirmative and negative covenants, and events of default that entitle Fifth Third to cause the indebtedness under the Groton Facility to become immediately due and payable. Amendment to Hercules Loan and Security Agreement On February 28, 2019, the Company and Hercules (and various affiliated entities) entered into the sixth amendment to the loan and security agreement (such amendment, the “Hercules Amendment”), which is effective as of February 22, 2019. Under the Hercules Amendment, the Company is required, at all times following February 22, 2019 through March 31, 2019, to maintain an unrestricted cash balance of at least (a) 50% of the outstanding loan balance, plus (b) the amount of accounts payable (as defined under GAAP) not paid within 90 days of the invoice date, in accounts subject to an account control agreement in favor of Hercules. Further, at all times after March 31, 2019, the Company is required to maintain an unrestricted cash balance of at least (a) 75% of the outstanding loan balance, plus (b) the amount of accounts payable (as defined under GAAP) not paid within 90 days of the invoice date, in accounts subject to an account control agreement in favor of Hercules. In addition, in the event of prepayment, the Hercules Amendment requires the payment of a prepayment charge equal to the following percentage of the advance amount being prepaid: (a) if such advance amounts are prepaid in any of the first twelve months following February 22, 2019, 2.00%, and (b) thereafter, 1.00%. In connection with the execution of the Hercules Amendment, the Company paid a $250,000 non-refundable fee to Hercules. Waiver Agreement On February 21, 2019, the Company entered into a waiver agreement (the “Waiver Agreement”) with the sole remaining holder of the Series C Preferred Stock (such holder, the “Series C Holder”). Under the Waiver Agreement, the Series C Holder waived any equity conditions failures that may have occurred under the Series C Certificate of Designations. The Series C Holder further waived any triggering event occurring after the date of the Waiver Agreement, as well as its right to demand, require or otherwise receive cash payments under the Series C Certificate of Designations, which waiver will terminate upon the occurrence of certain key triggering events, the occurrence of a fundamental transaction, a breach of the Waiver Agreement, or the occurrence of a bankruptcy triggering event. In addition, the Company agreed in the Waiver Agreement, pursuant to Section 8(d) of the Series C Certificate of Designations, to adjust the conversion price of the Series C Preferred Stock in connection with future conversions, such that, when the Series C Holder converts its Series C Preferred Stock into common stock, it will receive approximately 25% more shares than it would have received upon conversion prior to the execution of the Waiver Agreement and the adjustment of the conversion price. Under the Waiver Agreement, conversions of Series C Preferred Stock may occur after the March 1, 2019 maturity date. Additionally, the Series C Holder acknowledged in the Waiver Agreement that no anti-dilution or other adjustments under the Series C Certificate of Designations will result from the exchange of the Warrant (as defined below) for shares of, or the issuance of shares of, the Company’s common stock pursuant to the Exchange Agreement (as defined below). The Company further agreed to reserve specific numbers of shares for issuance to the Series C Holder and the Series D Holders (as defined below), with such reservations to remain in place until the Company has increased its authorized shares of common stock or effected a reverse stock split. In the event of a reverse stock split, the Company will be required to reserve shares as set forth in the Series C Certificate of Designations (if shares of Series C Preferred Stock are still outstanding) and the Series D Certificate of Designation. Exchange Agreement On February 21, 2019, the Company also entered into an Exchange Agreement (the “Exchange Agreement”) with the holder (the “Warrant Holder”) of the Series A Warrant to Purchase Common Stock, issued by the Company on July 12, 2016 (the “Warrant”), which was exercisable for 7,680,000 shares of the Company’s common stock. Pursuant to the Exchange Agreement, the Company has agreed to issue to the Warrant Holder 6,000,000 shares of the Company’s common stock (subject to adjustment for stock dividends, stock splits, stock combinations, and other reclassifications) in exchange for the transfer of the Warrant back to the Company, in reliance on an exemption from registration provided by Section 3(a)(9) of the Securities Act of 1933, as amended. Following the transfer of the Warrant back to the Company, the Warrant shall be cancelled and no further shares shall be issuable pursuant to the Warrant. Consent and Waiver On February 21, 2019, the Company entered into a Consent and Waiver with each of the holders of the Series D Preferred Stock (such holders, the “Series D Holders”), pursuant to which the Series D Holders consented to the adjustments to the conversion price of the Series C Preferred Stock set forth in the Waiver Agreement and waived certain anti-dilution rights and conversion price adjustments under the Series D Certificate of Designation that may have resulted from the conversion price adjustments set forth in the Waiver Agreement. The Series D Holders further acknowledged that no anti-dilution or other adjustments under the Series D Certificate of Designation will result from the exchange of the Warrant for shares of, or the issuance of shares of, the Company’s common stock pursuant to the Exchange Agreement. Additionally, the parties agreed to implement new “pre-notice” procedures in connection with the notices to be given to the Series D Holders of subsequent placements (and their participation rights therein) under the Series D Certificate of Designation, and the Company agreed to reserve specific numbers of shares for issuance to the Series D Holders, with such reservations to remain in place until the Company has increased its authorized shares of common stock or effected a reverse stock split. In the event of a reverse stock split, the Company will be required to reserve shares as set forth in the Series D Certificate of Designation.

Subsequent Events

3 Months Ended

Jan. 31, 2019

Note 17. Subsequent Events

Construction Loan Agreement

On February 28, 2019, the Company, through its indirect wholly-owned subsidiary Groton Station Fuel Cell, LLC (“Groton Borrower”), entered into a Construction Loan Agreement (the “Construction Loan Agreement”) with Fifth Third Bank (“Fifth Third”) pursuant to which Fifth Third agreed to make available to Groton Borrower a construction loan facility in an aggregate principal amount of up to $23.0 million (the “Groton Facility”) to fund the manufacture, construction, installation, commissioning and start-up of the 7.4 megawatt fuel cell power plant for the Connecticut Municipal Electric Energy Cooperative located on the U.S. Navy submarine base in Groton, Connecticut (the “Groton Project”). Groton Borrower made an initial draw under the Groton Facility on the date of closing of $9.6 million.

Amounts borrowed under the Groton Facility bear interest at a rate equal to the sum of the one-month LIBOR Rate plus 2.25 %. Regular monthly payments are interest-only. Amounts borrowed under the Groton Facility may be prepaid at any time without penalty. The maturity date of the Groton Facility will be the earlier of (a) October 31, 2019, (b) the commercial operation date of the Groton Project, or (c) one business day after receipt of proceeds of debt financing (i.e., take out financing) in an amount sufficient to repay the outstanding indebtedness under the Groton Facility. Mandatory prepayments are required in the event of material damage or destruction to the Groton Project or a change of control of Groton Borrower.

The Company has agreed to guarantee Groton Borrower’s obligations under the Construction Loan Agreement. In addition, Groton Borrower’s obligations under the Construction Loan Agreement are secured by a first mortgage lien on Groton Borrower’s leasehold interest in the Groton Project site, a security interest in the Groton Project assets, including material Groton Project related contracts such as the power purchase agreement and EPC agreement, and the Company’s equity interest in the Groton Borrower.

The Construction Loan Agreement contains customary representations and warranties, affirmative and negative covenants, and events of default that entitle Fifth Third to cause the indebtedness under the Groton Facility to become immediately due and payable.

Amendment to Hercules Loan and Security Agreement

On February 28, 2019, the Company and Hercules (and various affiliated entities) entered into the sixth amendment to the loan and security agreement (such amendment, the “Hercules Amendment”), which is effective as of February 22, 2019. Under the Hercules Amendment, the Company is required, at all times following February 22, 2019 through March 31, 2019, to maintain an unrestricted cash balance of at least (a) 50% of the outstanding loan balance, plus (b) the amount of accounts payable (as defined under GAAP) not paid within 90 days of the invoice date, in accounts subject to an account control agreement in favor of Hercules. Further, at all times after March 31, 2019, the Company is required to maintain an unrestricted cash balance of at least (a) 75% of the outstanding loan balance, plus (b) the amount of accounts payable (as defined under GAAP) not paid within 90 days of the invoice date, in accounts subject to an account control agreement in favor of Hercules. In addition, in the event of prepayment, the Hercules Amendment requires the payment of a prepayment charge equal to the following percentage of the advance amount being prepaid: (a) if such advance amounts are prepaid in any of the first twelve months following February 22, 2019, 2.00%, and (b) thereafter, 1.00%. In connection with the execution of the Hercules Amendment, the Company paid a $250,000 non-refundable fee to Hercules.

Waiver Agreement

On February 21, 2019, the Company entered into a waiver agreement (the “Waiver Agreement”) with the sole remaining holder of the Series C Preferred Stock (such holder, the “Series C Holder”). Under the Waiver Agreement, the Series C Holder waived any equity conditions failures that may have occurred under the Series C Certificate of Designations. The Series C Holder further waived any triggering event occurring after the date of the Waiver Agreement, as well as its right to demand, require or otherwise receive cash payments under the Series C Certificate of Designations, which waiver will terminate upon the occurrence of certain key triggering events, the occurrence of a fundamental transaction, a breach of the Waiver Agreement, or the occurrence of a bankruptcy triggering event. In addition, the Company agreed in the Waiver Agreement, pursuant to Section 8(d) of the Series C Certificate of Designations, to adjust the conversion price of the Series C Preferred Stock in connection with future conversions, such that, when the Series C Holder converts its Series C Preferred Stock into common stock, it will receive approximately 25% more shares than it would have received upon conversion prior to the execution of the Waiver Agreement and the adjustment of the conversion price. Under the Waiver Agreement, conversions of Series C Preferred Stock may occur after the March 1, 2019 maturity date.

Additionally, the Series C Holder acknowledged in the Waiver Agreement that no anti-dilution or other adjustments under the Series C Certificate of Designations will result from the exchange of the Warrant (as defined below) for shares of, or the issuance of shares of, the Company’s common stock pursuant to the Exchange Agreement (as defined below). The Company further agreed to reserve specific numbers of shares for issuance to the Series C Holder and the Series D Holders (as defined below), with such reservations to remain in place until the Company has increased its authorized shares of common stock or effected a reverse stock split. In the event of a reverse stock split, the Company will be required to reserve shares as set forth in the Series C Certificate of Designations (if shares of Series C Preferred Stock are still outstanding) and the Series D Certificate of Designation.

Exchange Agreement

On February 21, 2019, the Company also entered into an Exchange Agreement (the “Exchange Agreement”) with the holder (the “Warrant Holder”) of the Series A Warrant to Purchase Common Stock, issued by the Company on July 12, 2016 (the “Warrant”), which was exercisable for 7,680,000 shares of the Company’s common stock. Pursuant to the Exchange Agreement, the Company has agreed to issue to the Warrant Holder 6,000,000 shares of the Company’s common stock (subject to adjustment for stock dividends, stock splits, stock combinations, and other reclassifications) in exchange for the transfer of the Warrant back to the Company, in reliance on an exemption from registration provided by Section 3(a)(9) of the Securities Act of 1933, as amended. Following the transfer of the Warrant back to the Company, the Warrant shall be cancelled and no further shares shall be issuable pursuant to the Warrant.

Consent and Waiver

On February 21, 2019, the Company entered into a Consent and Waiver with each of the holders of the Series D Preferred Stock (such holders, the “Series D Holders”), pursuant to which the Series D Holders consented to the adjustments to the conversion price of the Series C Preferred Stock set forth in the Waiver Agreement and waived certain anti-dilution rights and conversion price adjustments under the Series D Certificate of Designation that may have resulted from the conversion price adjustments set forth in the Waiver Agreement. The Series D Holders further acknowledged that no anti-dilution or other adjustments under the Series D Certificate of Designation will result from the exchange of the Warrant for shares of, or the issuance of shares of, the Company’s common stock pursuant to the Exchange Agreement.

Additionally, the parties agreed to implement new “pre-notice” procedures in connection with the notices to be given to the Series D Holders of subsequent placements (and their participation rights therein) under the Series D Certificate of Designation, and the Company agreed to reserve specific numbers of shares for issuance to the Series D Holders, with such reservations to remain in place until the Company has increased its authorized shares of common stock or effected a reverse stock split. In the event of a reverse stock split, the Company will be required to reserve shares as set forth in the Series D Certificate of Designation.