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Investments in Associates - Summarized Financial Information in Associate Balance Sheet Items (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Disclosure of associates [line items] |  |  |
Current Assets | $ 32,727 | $ 33,604 |
Total assets | 1,974,777 | 620,858 |
Total liabilities | 533,372 | 28,220 |
Carrying amount of investment in associate | 27,265 | 84,589 | $ 112,906
Sandbox Royalties Corp [member] |  |  |
Disclosure of associates [line items] |  |  |
Current Assets | 6,615 |  |
Non-current Assets | 71,993 |  |
Total assets | 78,608 |  |
Current Liabilities | 86 |  |
Non-current Liabilities | 15,975 |  |
Total liabilities | 16,061 |  |
Net Assets | 62,547 |  |
Company's share of net assets of associate | 12,600 |  |
Adjustments to Sandstorm's share of net assets | 5,678 |  |
Carrying amount of investment in associate | 18,278 | 0 | 0
Horizon Copper Corp [member] |  |  |
Disclosure of associates [line items] |  |  |
Current Assets | 41,360 |  |
Non-current Assets | 259,523 |  |
Total assets | 300,883 |  |
Current Liabilities | 141 |  |
Non-current Liabilities | 271,163 |  |
Total liabilities | 271,304 |  |
Net Assets | 29,579 |  |
Company's share of net assets of associate | 10,057 |  |
Adjustments to Sandstorm's share of net assets | (1,070) |  |
Carrying amount of investment in associate | $ 8,987 | $ 0 | $ 0

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- Definition The amount of investments in associates accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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