Life of Mine Production, Percentage

No definition available.

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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-Paragraph 10A
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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of open derivatives, commodity, or energy contracts, held at each balance sheet date, that was included in earnings for the period.

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-Topic 230
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-Section 45
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Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2016
Derivative [Line Items]
Production to be sold, percent					50.00%
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 13,800
Concentrate Sales Contracts
Derivative [Line Items]
Provisional gain (loss) on derivatives and commodity contracts	$ (962)	$ 233	250	$ (1,461)
Interest rate swap
Derivative [Line Items]
Net derivative gain (loss)	$ 0	$ 15	0	$ (173)
Designated as Hedging Instrument \| Gold zero cost collars
Derivative [Line Items]
After tax gains in AOCI			$ 26,300