Derivative Financial Instruments - Summary of Classification of Fair Value of Derivative Instruments (Details) - Silver and Gold Concentrate Sales Agreements - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Prepaid expenses and other
Fair value of the derivative instruments
Fair value of derivative asset	$ 7	$ 86
Accrued liabilities and other
Fair value of the derivative instruments
Fair value of derivative liability	$ 77	$ 162

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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