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Commitments and Contractual Obligations (Tables)
12 Months Ended
Dec. 31, 2020
Disclosure of contingent liabilities [abstract]  
Summary of Contractual Obligations
The Company’s commitments and contractual obligations at December 31, 2020, include:
2021 2022 2023 20242025 and laterTotal
Debt (1)
$66,667 $66,667 $150,000 $233,953 $— $517,287 
Purchase obligations56,903 2,967 239 239 239 60,587 
Leases13,274 6,277 2,822 2,298 11,415 36,086 
Mineral properties4,658 4,467 4,636 4,636 12,265 30,662 
Asset retirement obligations4,701 4,292 3,301 420 125,973 138,687 
$146,203 $84,670 $160,998 $241,546 $149,892 $783,309 

(1)Does not include interest on debt.