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Leases - Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Gain on Modification of Lease	$ 4,051	$ 0	$ 0

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- Definition

The (gain) loss recorded for the remaining operating lease liability remeasured after a lease modification.

+ References

No definition available.

+ Details

Name:	cde_GainLossonModificationofLease
Namespace Prefix:	cde_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- References

No definition available.

+ Details

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