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Note 11 - Equity - Schedule of Warrants (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Outstanding warrants, number (in shares) | 88,251 | 12,827 |
Outstanding warrants, exercise price (in dollars per share) | $ 21.73 | $ 72.12 |
Outstanding warrants, weighted average remaining life (Year) | 2 years 5 months 15 days | 2 years 6 months | 10 months 6 days
Series C Warrants (Note 10.a) (in shares) | 159,964 | 20,642 |
Series C Warrants (Note 10.a), exercise price (in dollars per share) | $ 24.62 | $ 28.85 |
Warrants issued pursuant to modification of convertible debt (in shares) |  | 54,782 |
Warrants issued pursuant to modification of convertible debt, exercise price (in dollars per share) |  | $ 7.21 |
Outstanding warrants, number (in shares) | 248,215 | 88,251 | 12,827
Outstanding warrants, exercise price (in dollars per share) | $ 19.9 | $ 21.73 | $ 72.12

X
- Definition The number of warrants issued during the period. + References No definition available. + Details
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Namespace Prefix: | aiff_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the exercise price of warrants or rights issued during the period. + References No definition available. + Details
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Namespace Prefix: | aiff_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the exercise price of warrants or rights modified during the period. + References No definition available. + Details
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Namespace Prefix: | aiff_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the weighted average remaining life of warrants or rights. + References No definition available. + Details
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Namespace Prefix: | aiff_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of warrants or rights modified during the period. + References No definition available. + Details
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Namespace Prefix: | aiff_
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Balance Type: | na
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X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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Balance Type: | na
Period Type: | instant

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | instant