XML 75 R61.htm IDEA: XBRL DOCUMENT
v3.21.2

Stockholders' Equity and Warrant Liabilities - Schedule of Warrant Activity (Details) | 9 Months Ended
--- | ---
Jul. 31, 2021 shares
Orion Energy Partners Investment Agent, LLC Credit Facility [Member] |
Class of Warrant or Right, Outstanding | 2,700,000
Common stock issued during period, warrants exercised | (2,700,000)
May 2017 Offering - Series C Warrants |
Class of Warrant or Right, Outstanding | 964,128
Common stock issued during period, warrants exercised | (14,026)
Class of Warrant or Right, Outstanding | 950,102

X
- Definition Common stock issued during period warrants exercised. + References No definition available. + Details
Name: | fcel_CommonStockIssuedDuringPeriodWarrantsExercised
Namespace Prefix: | fcel_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_CounterpartyNameAxis=fcel_OrionEnergyPartnersInvestmentAgentLLCCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=fcel_SeriesCWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |