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v3.22.4

Short-Term Investment (Details) - shares | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure Text Block Supplement [Abstract] |  |
Number of shares hold by company | 356,803 | 356,803
Percentage of outstanding shares | 5.00% |

X
- Definition Percentage of outstanding shares. + References No definition available. + Details
Name: | canf_PercentageOfOutstandingShares
Namespace Prefix: | canf_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockSupplementAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration