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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and equipment (Details)	12 Months Ended
	Dec. 31, 2020
Leasehold improvements
Property and equipment
Useful life	10 years
Equipment | Minimum
Property and equipment
Useful life	3 years
Equipment | Maximum
Property and equipment
Useful life	10 years
Furniture, fixtures, fittings and other | Minimum
Property and equipment
Useful life	2 years
Furniture, fixtures, fittings and other | Maximum
Property and equipment
Useful life	10 years

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- 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.

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No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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