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RECLAMATION AND CLOSURE COST OBLIGATIONS (Details Textual) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of reclamation and closure cost obligations [Line Items] |  |
Percentage of annual fees of the value of outstanding letters of credit | 1.50% |
Letters Of Credit [Member] |  |
Disclosure of reclamation and closure cost obligations [Line Items] |  |
Exposure to credit risk on loan commitments and financial guarantee contracts | $ 110.8 | $ 137.8
Bottom of range [member] |  |
Disclosure of reclamation and closure cost obligations [Line Items] |  |
Discount rate applied to cash flow projections | 1.90% | 1.90%
Description of inflation rates applied to cash flow projections | 1.40% | 1.70%
Top of range [member] |  |
Disclosure of reclamation and closure cost obligations [Line Items] |  |
Discount rate applied to cash flow projections | 7.10% | 6.00%
Description of inflation rates applied to cash flow projections | 3.30% | 3.30%

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- Definition The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 134 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_134_d_v&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2018-01-01 -Paragraph 134 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=36&date=2018-03-01&anchor=para_134_e_v&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of the exposure to credit risk on loan commitments and financial guarantee contracts. [Refer: Loan commitments [member]; Financial guarantee contracts [member]; Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35H -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35H&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35I -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35I&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2018-01-01 -Paragraph 35M -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_35M&doctype=Standard -URIDate 2018-03-16 + Details
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