Acquisition of remaining interest in the Rosemont project (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure of detailed information about business combination [abstract]

Disclosure of detailed information about acquisition date fair value of consideration paid [Table Text Block]

Cash	$	45,000
Present value of future cash installments		23,557
Total consideration	$	68,557

Disclosure of detailed information about acquisition of remaining asset and liabilities [Table Text Block]

Current assets	$	343
Non-current assets		68,904
Liabilities		(690	)
Net assets acquired	$	68,557