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Mining Properties (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Mining Properties |  |
Operational mining properties: | $ 997,307 | $ 913,953
Accumulated depletion | (650,831) | (596,214)
Operational mining properties, net | 346,476 | 317,739
Mineral interest | 946,226 | 949,172
Accumulated depletion | (575,911) | (554,956)
Mineral interest, net | 370,315 | 394,216
Mineral Properties, Net | 716,790 | 711,955
Palmarejo [Member] |  |
Mining Properties |  |
Operational mining properties: | 280,184 | 260,838
Accumulated depletion | (194,898) | (179,894)
Operational mining properties, net | 85,286 | 80,944
Mineral interest | 629,303 | 629,303
Accumulated depletion | (518,866) | (501,039)
Mineral interest, net | 110,437 | 128,264
Mineral Properties, Net | 195,723 | 209,208
Rochester [Member] |  |
Mining Properties |  |
Operational mining properties: | 270,648 | 220,127
Accumulated depletion | (157,526) | (155,079)
Operational mining properties, net | 113,122 | 65,048
Mineral interest | 18,541 | 18,541
Accumulated depletion | 0 | 0
Mineral interest, net | 18,541 | 18,541
Mineral Properties, Net | 131,663 | 83,589
Silvertip [Member] |  |
Mining Properties |  |
Operational mining properties: | 48,589 | 50,146
Accumulated depletion | (10,747) | (9,623)
Operational mining properties, net | 37,842 | 40,523
Mineral interest | 105,736 | 105,736
Accumulated depletion | (24,828) | (24,147)
Mineral interest, net | 80,908 | 81,589
Mineral Properties, Net | 118,750 | 122,112
Kensington |  |
Mining Properties |  |
Operational mining properties: | 360,201 | 345,026
Accumulated depletion | (264,014) | (230,869)
Operational mining properties, net | 96,187 | 114,157
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Mineral Properties, Net | 96,187 | 114,157
Wharf [Member] |  |
Mining Properties |  |
Operational mining properties: | 33,578 | 34,165
Accumulated depletion | (22,547) | (20,071)
Operational mining properties, net | 11,031 | 14,094
Mineral interest | 48,062 | 45,837
Accumulated depletion | (32,217) | (29,051)
Mineral interest, net | 15,845 | 16,786
Mineral Properties, Net | 26,876 | 30,880
Sterling [Member] |  |
Mining Properties |  |
Operational mining properties: | 4,107 | 3,651
Accumulated depletion | (1,099) | (678)
Operational mining properties, net | 3,008 | 2,973
Mineral interest | 95,499 | 95,499
Accumulated depletion | 0 | 0
Mineral interest, net | 95,499 | 95,499
Mineral Properties, Net | 98,507 | 98,472
La Preciosa [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 49,085 | 49,085
Accumulated depletion | 0 | 0
Mineral interest, net | 49,085 | 49,085
Mineral Properties, Net | 49,085 | 49,085
Other Mining Properties [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 0 | 5,171
Accumulated depletion | 0 | (719)
Mineral interest, net | 0 | 4,452
Mineral Properties, Net | $ 0 | $ 4,452

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