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Other Accounts Receivable and Prepaid Expenses (Details) - Schedule of other accounts receivable and prepaid expenses - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Schedule Of Other Accounts Receivable And Prepaid Expenses Abstract |  |
Government authorities | $ 48 | $ 18
Prepaid expenses and others | 881 | 1,039
Total | $ 929 | $ 1,057

X
- Definition Amount of government authorities for the period. + References No definition available. + Details
Name: | canf_GovernmentAuthorities
Namespace Prefix: | canf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer. + References No definition available. + Details
Name: | us-gaap_OtherReceivablesNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets. + References No definition available. + Details
Name: | us-gaap_PrepaidExpenseAndOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant