Other, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Other Income and Expenses [Abstract]
Foreign exchange gain (loss)	$ (599)	$ (2,945)	$ (665)		$ (4,078)
Gain (loss) on sale of assets and investments	(2,476)	(100)	(2,458)		(120)
Gold zero cost collars novation fee	(3,819)	0	(3,819)		0
Gain (loss) on sale of Manquiri consideration	0	0	365	[1]	0	[1]
Gain (loss) on Silvertip consideration	0	0	955		0
Interest Income, Other	0	0	0		199
Other	582	(589)	1,312		1,068
Other, net	$ (6,312)	$ (3,634)	$ (4,310)		$ (2,931)

[1] As defined in Note 18 -- Discontinued Operations.