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SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property and Equipment Annual Depreciation Rates) (Details)	12 Months Ended
	Dec. 31, 2020
Laboratory equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	10.00%
Laboratory equipment [Member] | Minimum [Member] | Mainly [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	15.00%
Laboratory equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	33.00%
Laboratory equipment [Member] | Maximum [Member] | Mainly [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	25.00%
Office equipment and furniture [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	7.00%
Office equipment and furniture [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	15.00%
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Annual rate of depreciation	33.00%

X

- Definition

The annual rate by which the asset depreciates.

+ References

No definition available.

+ Details

Name:	SLGL_PropertyAndEquipmentDepreciationPercentage
Namespace Prefix:	SLGL_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=SLGL_LaboratoryEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	srt_StatementScenarioAxis=SLGL_MainlyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=SLGL_OfficeFurnitureAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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