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Gold and Silver Stream Agreements - Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred revenue | $ 43,466 | $ 42,560
Gold Streaming Agreement |  |
Deferred revenue | 20,881 | 20,364
Silver Streaming Agreement |  |
Deferred revenue | $ 22,585 | $ 22,196

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(c)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Period Type: | instant

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