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Mining Properties (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
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Mining Properties |  |
Operational mining properties: | $ 639,456 | $ 612,162
Accumulated depletion | (451,299) | (424,642)
Operational mining properties, net | 188,157 | 187,520
Mineral interest | 784,365 | 806,436
Accumulated depletion | (420,487) | (404,737)
Mineral interest, net | 363,878 | 401,699
Total mining properties | 552,035 | 589,219
Palmarejo [Member] |  |
Mining Properties |  |
Operational mining properties: | 161,865 | 151,828
Accumulated depletion | (135,122) | (131,055)
Operational mining properties, net | 26,743 | 20,773
Mineral interest | 629,303 | 629,303
Accumulated depletion | (364,403) | (348,268)
Mineral interest, net | 264,900 | 281,035
Total mining properties | 291,643 | 301,808
Rochester [Member] |  |
Mining Properties |  |
Operational mining properties: | 153,091 | 149,756
Accumulated depletion | (132,307) | (126,242)
Operational mining properties, net | 20,784 | 23,514
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 20,784 | 23,514
Kensington [Member] |  |
Mining Properties |  |
Operational mining properties: | 251,847 | 238,786
Accumulated depletion | (143,840) | (131,236)
Operational mining properties, net | 108,007 | 107,550
Mineral interest | 0 | 0
Accumulated depletion | 0 | 0
Mineral interest, net | 0 | 0
Total mining properties | 108,007 | 107,550
Wharf [Member] |  |
Mining Properties |  |
Operational mining properties: | 33,122 | 32,318
Accumulated depletion | (8,717) | (5,784)
Operational mining properties, net | 24,405 | 26,534
Mineral interest | 45,837 | 45,837
Accumulated depletion | (15,384) | (10,551)
Mineral interest, net | 30,453 | 35,286
Total mining properties | 54,858 | 61,820
San Bartolome [Member] |  |
Mining Properties |  |
Operational mining properties: | 39,531 | 39,474
Accumulated depletion | (31,313) | (30,325)
Operational mining properties, net | 8,218 | 9,149
Mineral interest | 12,868 | 12,868
Accumulated depletion | (11,556) | (11,400)
Mineral interest, net | 1,312 | 1,468
Total mining properties | 9,530 | 10,617
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
Total mining properties | 49,085 | 49,085
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 | 37,272 | 59,343
Accumulated depletion | (29,144) | (34,518)
Mineral interest, net | 8,128 | 24,825
Total mining properties | $ 8,128 | $ 24,825

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