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Net Income (Loss) Per Share Attributable to Ordinary Shareholders (Details) - Schedule of diluted weighted average shares outstanding - shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | [1] | Dec. 31, 2020
Schedule Of Diluted Weighted Average Shares Outstanding Abstract |  |  |
IPO Warrants and Additional Warrants (Note 12h) | 6,541,998 |  |
Underwriter warrants | 611,785 |  |
Other warrants | 78,661 |  |
Total diluted weighted average shares outstanding | 7,232,444 |  |
[1] | except share and per share data

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- Definition Number of shares is IPO and additional warrants. + References No definition available. + Details
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- Definition Number of shares is other warrants. + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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- Definition Total diluted weighted average shares outstanding. + References No definition available. + Details
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Namespace Prefix: | jfbr_
Data Type: | xbrli:sharesItemType
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- Definition Number of shares is underwriter warrants. + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration