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Write-downs Write-Downs (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Apr. 19, 2016
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | $ 4,446 | $ 313,337 | $ 1,472,721 |
Impairment of Long-Lived Assets Held-for-use, Net of Tax | 3,900 | 276,500 | 1,021,800 |
Coeur Capital [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs |  | 22,100 |  |
Impairment of Long-Lived Assets Held-for-use, Net of Tax |  | 16,300 |  |
San Bartolome [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs |  | 66,700 |  |
Palmarejo [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs |  | 224,500 | 784,000 |
Impairment of Long-Lived Assets Held-for-use, Net of Tax |  | 193,500 | 504,500 |
La Preciosa [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs |  |  | 372,500 |
Impairment of Long-Lived Assets Held-for-use, Net of Tax |  |  | 244,900 |
McEwen Mining Inc, El Gallo, Magistral Mine [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Transfer of Financial Assets Accounted for as Sales, Cash Proceeds Received for Assets Derecognized, Amount |  |  |  | $ 6,300
Disposition of Assets, Contingent Consideration, Asset |  |  |  | $ 1,000
Mining Properties and Mineral Rights [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 4,446 | 244,611 | 1,229,844 |
Mining Properties and Mineral Rights [Member] | Palmarejo [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 205,803 | 668,803 |
Mining Properties and Mineral Rights [Member] | San Bartolome [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 16,690 | 32,328 |
Mining Properties and Mineral Rights [Member] | Kensington [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 0 | 67,671 |
Mining Properties and Mineral Rights [Member] | La Preciosa [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 0 | 371,411 |
Mining Properties and Mineral Rights [Member] | Joaquin Project - Argentina [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 0 | 83,429 |
Mining Properties and Mineral Rights [Member] | Coeur Capital [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 4,446 | 22,118 | 6,202 |
Property, Plant and Equipment, Other Types [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 68,726 | 242,877 |
Property, Plant and Equipment, Other Types [Member] | Palmarejo [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 18,704 | 115,235 |
Property, Plant and Equipment, Other Types [Member] | San Bartolome [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 50,022 | 86,426 |
Property, Plant and Equipment, Other Types [Member] | Kensington [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | 0 | 0 | 40,161 |
Property, Plant and Equipment, Other Types [Member] | La Preciosa [Member] |  |  |  |
Impaired Long-Lived Assets Held and Used [Line Items] |  |  |  |
Write-downs | $ 0 | $ 0 | $ 1,055 |

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