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FINANCE INCOME AND EXPENSE - Interest expense and other financial expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Analysis of income and expense [abstract]
Interest expense on debt	$ 19,916	$ 23,049
Accretion of reclamation and closure cost provision	3,887	3,743
Other	2,984	4,806
Interest and other finance income	$ 26,787	$ 31,598

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- References

No definition available.

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- Definition

The amount of costs associated with financing activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of interest expense on borrowings. [Refer: Interest expense; Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2020-01-01
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- Definition

The amount of finance costs that the entity does not separately disclose in the same statement or note. [Refer: Finance costs]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 1
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- Definition

Accretion of reclamation and closure cost provision

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No definition available.

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