INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE - Changes in Company's Investment in MSC (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Change in the investment in MSC
Investment in MSC, beginning of period	$ 110,183
Income and mining tax recovery (note 19)	(1,094)	$ 118
Dividend distribution received		(2,020)
Investment in MSC, end of period	107,507		$ 110,183
MSC
Change in the investment in MSC
Investment in MSC, beginning of period	110,183	127,814	127,814
Attributable net loss from MSC	(1,611)	(1,358)	(2,097)
Amortization of fair value increments	(1,385)	(1,913)	(9,448)
Income and mining tax recovery (note 19)	320	961	2,791
Dividend distribution received			(8,877)
Investment in MSC, end of period	$ 107,507		$ 110,183
Proceeds from Dividends Received		$ 2,000

Represents the amortization of fair value increments from the equity method investments.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of the period.

+ References

No definition available.

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- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee, before amortization, to which the equity method of accounting is applied.

+ References

No definition available.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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

Amount of investment in equity method investee and investment in and advance to affiliate.

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-Publisher FASB
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- Definition

Dividends received on equity and other investments during the current period.

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- Definition

Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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