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Mining Properties (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Mining Properties |  |
Operational mining properties: | $ 612,162 | $ 557,799
Accumulated depletion | (424,642) | (368,410)
Operational mining properties, net | 187,520 | 189,389
Mineral interest | 806,436 | 679,429
Accumulated depletion | (404,737) | (367,626)
Mineral interest, net | 401,699 | 311,803
Total mining properties | 589,219 | 501,192
Palmarejo [Member] |  |
Mining Properties |  |
Operational mining properties: | 151,828 | 137,821
Accumulated depletion | (131,055) | (121,906)
Operational mining properties, net | 20,773 | 15,915
Mineral interest | 629,303 | 521,349
Accumulated depletion | (348,268) | (332,032)
Mineral interest, net | 281,035 | 189,317
Total mining properties | 301,808 | 205,232
San Bartolome [Member] |  |
Mining Properties |  |
Operational mining properties: | 39,474 | 49,305
Accumulated depletion | (30,325) | (26,106)
Operational mining properties, net | 9,149 | 23,199
Mineral interest | 12,868 | 17,560
Accumulated depletion | (11,400) | (10,143)
Mineral interest, net | 1,468 | 7,417
Total mining properties | 10,617 | 30,616
Kensington [Member] |  |
Mining Properties |  |
Operational mining properties: | 238,786 | 217,138
Accumulated depletion | (131,236) | (106,865)
Operational mining properties, net | 107,550 | 110,273
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 107,550 | 110,273
Rochester [Member] |  |
Mining Properties |  |
Operational mining properties: | 149,756 | 153,535
Accumulated depletion | (126,242) | (113,533)
Operational mining properties, net | 23,514 | 40,002
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 23,514 | 40,002
Wharf [Member] |  |
Mining Properties |  |
Operational mining properties: | 32,318 |
Accumulated depletion | (5,784) |
Operational mining properties, net | 26,534 |
Mineral interest | 45,837 |
Accumulated depletion | (10,551) |
Mineral interest, net | 35,286 |
Total mining properties | 61,820 |
Endeavor [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 49,085 | 49,059
Accumulated depletion | 0 | 0
Mineral interest, net | 49,085 | 49,059
Total mining properties | 49,085 | 49,059
Joaquin Project - Argentina [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 10,000 | 10,000
Accumulated depletion | 0 | 0
Mineral interest, net | 10,000 | 10,000
Total mining properties | 10,000 | 10,000
Other Mining Properties [Member] |  |
Mining Properties |  |
Operational mining properties: | $ 0 | 0
Accumulated depletion |  | 0
Operational mining properties, net | $ 0 | 0
Mineral interest | 59,343 | 81,461
Accumulated depletion | (34,518) | (25,451)
Mineral interest, net | 24,825 | 56,010
Total mining properties | $ 24,825 | $ 56,010

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