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v3.20.1

Deferred Consideration - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) oz | Dec. 31, 2019 USD ($) oz
Business Acquisition [Line Items] |  |
Deferred consideration | $ 175,300 | $ 173,024
Deferred consideration, current | 14,500 | 13,953
Deferred consideration, non-current | $ 160,800 | $ 159,071
Discount rate used to value the deferred consideration | 10.00% | 10.00%
Perpetual Growth Rate | 1.50% | 1.50%
April 1, 2018 through March 31, 2058 [Member] |  |
Business Acquisition [Line Items] |  |
Fixed payment ounces of gold | oz | 9,500 | 9,500
April 1, 2058 and Thereafter [Member] |  |
Business Acquisition [Line Items] |  |
Fixed payment ounces of gold | oz | 6,333 | 6,333

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Discount rate used to value the deferred consideration. + References No definition available. + Details
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- Definition Amount of liability arising from deferred consideration in a business combination. + References No definition available. + Details
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- Definition Rate at which represents the deferred consideration perpetual growth. + References No definition available. + Details
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- Details
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- Details
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