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v3.20.1

Other assets | 12 Months Ended
--- | ---
Dec. 31, 2019
Other Asset [Abstract] |
Other assets [Text Block] | 11. Other assets
|  | December 31, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
|  | $ |  |  | $ |
Current |  |  |  |  |  |
Prepaid expenses |  | 3,516 |  |  | 1,015 |
Inventories |  | 1,656 |  |  | - |
|  | 5,172 |  |  | 1,015 |
Non-current |  |  |  |  |  |
Reclamation deposits |  | 5,361 |  |  | - |
Deferred financing fees |  | 1,579 |  |  | 1,468 |
|  | 6,940 |  |  | 1,468 |

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- Definition The disclosure of other assets. [Refer: Other assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_10_e&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfOtherAssetsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | or_OtherAssetAbstract
Namespace Prefix: | or_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration