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v3.22.4

Note 7 - Warrants - Warrant Activity (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022 shares
Beginning balance (in shares) | 2,850,000
Granted (in shares) | 0
Exercised (in shares) | 0
Ending balance (in shares) | 2,850,000

X
- Definition The number of warrants or rights exercised during period. + References No definition available. + Details
Name: | ftek_ClassOfWarrantOrRightExercisedDuringPeriod
Namespace Prefix: | ftek_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents number of warrants issued. + References No definition available. + Details
Name: | ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued
Namespace Prefix: | ftek_
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