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Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Statement of Stockholders' Equity [Abstract] |  |  |
Net of issue expenses | $ 980 | $ 3,703 | $ 1,382
Warrants, net of issue expenses | $ 1,307 |  |

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- Definition Amount of captial and warrants, net of issue expenses. + References No definition available. + Details
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- Definition Warrants, net of issue expenses. + References No definition available. + Details
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Namespace Prefix: | canf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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