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v2.4.1.9

Commitments and Contingencies (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating Leases, Rent Expense | $ 1,041 us-gaap_LeaseAndRentalExpense | $ 1,010 us-gaap_LeaseAndRentalExpense | $ 964 us-gaap_LeaseAndRentalExpense
Equipment Construction Contracts | Performance Guarantee |  |  |
Other Commitment | 8,620 us-gaap_OtherCommitment / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_PerformanceGuaranteeMember / us-gaap_SupplyCommitmentAxis = ftek_EquipmentConstructionContractsMember |  |
Equipment Construction Contracts | Surety Bond |  |  |
Other Commitment | $ 12,389 us-gaap_OtherCommitment / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_SuretyBondMember / us-gaap_SupplyCommitmentAxis = ftek_EquipmentConstructionContractsMember |  |
Office Building | Stamford, Connecticut |  |  |
Area of Real Estate Property (in square feet) | 6,440 us-gaap_AreaOfRealEstateProperty / ftek_LocationAxis = ftek_StamfordConnecticutMember / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Office Building | Beijing, China |  |  |
Area of Real Estate Property (in square feet) | 8,000 us-gaap_AreaOfRealEstateProperty / ftek_LocationAxis = ftek_BeijingChinaMember / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Office Building | Durham, North Carolina |  |  |
Area of Real Estate Property (in square feet) | 16,000 us-gaap_AreaOfRealEstateProperty / ftek_LocationAxis = ftek_DurhamNorthCarolinaMember / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Office Building | Gallarate, Italy |  |  |
Area of Real Estate Property (in square feet) | 1,300 us-gaap_AreaOfRealEstateProperty / ftek_LocationAxis = ftek_GallarateItalyMember / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |
Office Building | Westlake, Ohio |  |  |
Area of Real Estate Property (in square feet) | 5,000 us-gaap_AreaOfRealEstateProperty / ftek_LocationAxis = ftek_WestlakeOhioMember / us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis = us-gaap_OfficeBuildingMember |  |

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_OfficeBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SupplyCommitmentAxis=ftek_EquipmentConstructionContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |