Inventory and Ore on Leach Pads - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Inventory [Line Items]
Inventory Write-down	$ 38,596	$ 16,821	$ 69,246
Rochester [Member]
Inventory [Line Items]
Inventory Write-down	8,400
Rochester [Member] | Amortization
Inventory [Line Items]
Inventory Write-down	1,100
Rochester [Member] | Cost of Sales
Inventory [Line Items]
Inventory Write-down	$ 7,300