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Significant Accounting Policies - Schedule of Property, Plant and Equipment Depreciation Rates (Details) | 12 Months Ended
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Dec. 31, 2020
Furniture and Office Equipment [Member] | Minimum [Member] |
Rate of depreciation, percentage | 7.00%
Furniture and Office Equipment [Member] | Maximum [Member] |
Rate of depreciation, percentage | 15.00%
Machines [Member] | Minimum [Member] |
Rate of depreciation, percentage | 10.00%
Machines [Member] | Maximum [Member] |
Rate of depreciation, percentage | 15.00%
Computers [Member] |
Rate of depreciation, percentage | 33.00%
Vehicles [Member] |
Rate of depreciation, percentage | 15.00%

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- Definition Rate of depreciation, percentage. + References No definition available. + Details
Name: | SAFO_RateOfDepreciationPercentage
Namespace Prefix: | SAFO_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=SAFO_FurnitureAndOfficeEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=SAFO_MachinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |