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Project Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2015 | Oct. 31, 2014
--- | --- | ---
Project assets table [Line Items] |  |
Project assets current | $ 5,260 | $ 0
Project assets noncurrent | 6,922 | 784
project assets current and noncurrent | $ 12,182 | $ 784

X
- Definition Long-term project assets + References No definition available. + Details
Name: | fcel_Longtermprojectassets
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Project Assets, Current + References No definition available. + Details
Name: | fcel_ProjectAssetsCurrent
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition project assets current and noncurrent + References No definition available. + Details
Name: | fcel_Projectassetscurrentandnoncurrent
Namespace Prefix: | fcel_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition [Line Items] for Project assets table [Table] + References No definition available. + Details
Name: | fcel_ProjectassetstableLineItems
Namespace Prefix: | fcel_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration