Other, Net - Summary of Other Non-Operating (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income and Expenses [Abstract]
Foreign exchange gain (loss)		$ (1,028)	$ (599)	$ (2,299)	$ (665)
Gain (loss) on sale of assets and investments		(92)	(2,476)	4,582	(2,458)
Valued added tax write-down		(25,982)	0	(25,982)	0
Gold zero cost collars novation fee			(3,819)		(3,819)
Gain (loss) on sale of Manquiri consideration		0	0	0	365
Gain (loss) on Silvertip consideration		0	0	0	955
Other		384	582	1,309	1,312
Other, net	[1]	$ (26,718)	$ (6,312)	$ (22,390)	$ (4,310)

[1] See Note 14 -- Additional Comprehensive Income (Loss) Detail for additional detail