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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		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Change in the investment in MSC
Investment in MSC, beginning of period			$ 108,326
Income tax recovery	$ 1,022	$ 30	3,037	$ 1,124
Dividend distribution received			(7,561)	(282)
Investment in MSC, end of period	98,338		98,338		$ 108,326
MSC
Change in the investment in MSC
Investment in MSC, beginning of period			108,326	110,183	110,183
Attributable net income from MSC			366		2,745
Amortization of fair value increments			(3,090)		(5,390)
Income tax recovery			297		1,128
Dividend distribution received			(7,561)		(340)
Investment in MSC, end of period	98,338		98,338		$ 108,326
Dividends received	$ 2,600		$ 7,600	$ 300

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

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