XML 166 R100.htm IDEA: XBRL DOCUMENT
v3.20.1

Exploration and evaluation - Disclosure of detailed information about exploration assets (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Statements Line Items |  |
Beginning balance | $ 95,002 | $ 102,182
Additions | 221 | 257
Investments tax credits | 0 | (93)
Transfer to royalty, stream and other interests | (2,288) | 0
Impairment | (49,986) | (7,344)
Ending balance | 42,949 | 95,002
Cost [Member] |  |
Statements Line Items |  |
Beginning balance | 103,206 |
Ending balance | 101,139 | 103,206
Accumulated impairment [Member] |  |
Statements Line Items |  |
Beginning balance | (8,204) |
Ending balance | $ (58,190) | $ (8,204)

X
- Definition The amount of assets arising from the search for mineral resources, including minerals, oil, natural gas and similar non-regenerative resources after the entity has obtained legal rights to explore in a specific area, as well as the determination of the technical feasibility and commercial viability of extracting the mineral resource. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2018-01-01 -Paragraph 24 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=6&date=2018-03-01&anchor=para_24_b&doctype=Standard -URIDate 2018-03-16 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Additions + References No definition available. + Details
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Namespace Prefix: | or_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Represents amount of impairment loss reversal of impairment loss assets arising from exploration and evaluation of mineral resources. + References No definition available. + Details
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Namespace Prefix: | or_
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- Definition Investments tax credits + References No definition available. + Details
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- Definition Statement [Line Items] + References No definition available. + Details
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- Definition Transfer to royalty, stream and other interests. + References No definition available. + Details
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Namespace Prefix: | or_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: |
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- Details
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Data Type: | na
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