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DERIVATIVE INSTRUMENTS - Gold price option contracts (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) oz
Gold contracts, January 2020 - June 2020 |
Disclosure of derivative instruments |
Gold Call Contracts Sold Quantity Outstanding | 72,000
Gold Call Contracts Sold Remaining Contractual term | 6 months
Gold Call Contracts Sold Exercise Price | 1,355
Gold Call Contracts Sold Fair Value Assets Liability | $ | $ (12.6)
Gold contracts, July 2020 - December 2020 |
Disclosure of derivative instruments |
Gold Call Contracts Sold Quantity Outstanding | 96,000
Gold Call Contracts Sold Remaining Contractual term | 6 months
Gold Call Contracts Sold Exercise Price | 1,415
Gold Call Contracts Sold Fair Value Assets Liability | $ | $ (14.1)
Gold |
Disclosure of derivative instruments |
Gold Call Contracts Purchased Quantity Outstanding | 168,000
Gold Call Contracts Purchased Remaining Contractual term | 12 months
Gold Call Contracts Purchased Exercise Price | 1,300
Gold Call Contracts Purchased Fair Value Assets Liability | $ | $ 0.3

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