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Mining Properties (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Mining Properties |  |
Operational mining properties: | $ 657,498 | $ 641,305
Accumulated depletion | (340,459) | (315,541)
Operational mining properties, net | 317,039 | 325,764
Mineral interest | 1,760,834 | 1,753,129
Accumulated depletion | (349,206) | (327,392)
Mineral interest, net | 1,411,628 | 1,425,737
Total mining properties | 1,728,667 | 1,751,501
Palmarejo [Member] |  |
Mining Properties |  |
Operational mining properties: | 158,631 | 151,845
Accumulated depletion | (116,097) | (110,143)
Operational mining properties, net | 42,534 | 41,702
Mineral interest | 1,146,572 | 1,146,572
Accumulated depletion | (318,214) | (300,187)
Mineral interest, net | 828,358 | 846,385
Total mining properties | 870,892 | 888,087
San Bartolome [Member] |  |
Mining Properties |  |
Operational mining properties: | 70,764 | 70,761
Accumulated depletion | (24,091) | (22,236)
Operational mining properties, net | 46,673 | 48,525
Mineral interest | 26,643 | 26,643
Accumulated depletion | (9,434) | (8,759)
Mineral interest, net | 17,209 | 17,884
Total mining properties | 63,882 | 66,409
Kensington [Member] |  |
Mining Properties |  |
Operational mining properties: | 275,660 | 268,351
Accumulated depletion | (92,162) | (80,032)
Operational mining properties, net | 183,498 | 188,319
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 183,498 | 188,319
Rochester [Member] |  |
Mining Properties |  |
Operational mining properties: | 152,443 | 150,348
Accumulated depletion | (108,109) | (103,130)
Operational mining properties, net | 44,334 | 47,218
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 44,334 | 47,218
Endeavor [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 408,352 | 408,352
Accumulated depletion | 0 | 0
Mineral interest, net | 408,352 | 408,352
Total mining properties | 408,352 | 408,352
Joaquin Project - Argentina [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 93,429 | 93,429
Accumulated depletion | 0 | 0
Mineral interest, net | 93,429 | 93,429
Total mining properties | 93,429 | 93,429
Other Mining Properties [Member] |  |
Mining Properties |  |
Operational mining properties: | 0 | 0
Accumulated depletion | 0 | 0
Operational mining properties, net | 0 | 0
Mineral interest | 85,838 | 78,133
Accumulated depletion | (21,558) | (18,446)
Mineral interest, net | 64,280 | 59,687
Total mining properties | $ 64,280 | $ 59,687

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- Definition Mining properties. + References No definition available. + Details
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- Details
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- Definition Operational mining properties. + References No definition available. + Details
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- Definition Operational mining properties, net. + References No definition available. + Details
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