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Commitments and Contractual Obligations (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure of contingent liabilities [abstract]  
Summary of Contractual Obligations
The Company’s commitments and contractual obligations at December 31, 2019, include:
 
2020

2021

2022

2023

2024 and later

Total

 
 
 
 
 
 
 
Debt(1)
$
66,667

$
66,667

$
66,666

$
—

$
300,000

$
500,000

Purchase obligations
31,883

431

421

137

137

33,009

Leases
10,673

10,075

4,677

1,944

2,310

29,679

Mineral properties
5,387

5,433

5,443

5,443

18,599

40,305

Asset retirement obligations
1,783

6,113

4,319

59

101,626

113,900

 
$
116,393

$
88,719

$
81,526

$
7,583

$
422,672

$
716,893



(1)
Does not include interest on debt.