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Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |  |  |
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 Coeur Mining, Inc. | Mar. 31, 2013 Coeur Mining, Inc. | Mar. 31, 2014 Guarantor Subsidiaries | Mar. 31, 2013 Guarantor Subsidiaries | Mar. 31, 2014 Non-Guarantor Subsidiaries | Mar. 31, 2013 Non-Guarantor Subsidiaries | Mar. 31, 2014 Eliminations | Mar. 31, 2013 Eliminations | Mar. 31, 2014 Senior Notes due Two Thousand Twenty One [Member] | Mar. 12, 2014 Senior Notes due Two Thousand Twenty One [Member] | Jan. 29, 2013 Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  | $ 450,000 | $ 150,000 | $ 300,000
Total Revenue | 159,633 | 171,797 |  | 0 | 0 | 60,500 | 78,748 | 99,133 | 93,049 | 0 | 0 |  |  |
Cost of Goods Sold | (106,896) | (88,059) | [1] | 0 | 0 | 43,238 | 44,342 | 63,658 | 43,717 | 0 | 0 |  |  |
Amortization | (40,459) | (49,724) |  | 377 | 219 | 15,296 | 15,141 | 24,786 | 34,364 | 0 | 0 |  |  |
General and Administrative Expense | 13,896 | 10,227 |  | 13,052 | 9,736 | 166 | 168 | 678 | 323 | 0 | 0 |  |  |
Costs of Metals Sold | 4,217 | 6,841 |  | 586 | 349 | 2,421 | 1,464 | 1,210 | 5,028 | 0 | 0 |  |  |
Impairment of Long-Lived Assets Held-for-use | 0 | 119 |  |  | 0 |  | 0 |  | 119 |  | 0 |  |  |
Pre-development, reclamation, and other | 6,984 | 5,197 |  | 0 | 0 | 1,536 | 429 | 5,448 | 4,768 | 0 | 0 |  |  |
Operating Expenses | 172,452 | 160,167 |  | 14,015 | 10,304 | 62,657 | 61,544 | 95,780 | 88,319 | 0 | 0 |  |  |
Loss on termination of revolving credit facility | (3,035) | 0 |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (11,436) | 17,796 |  | (526) | (860) | (673) | 4,227 | (10,237) | 14,429 | 0 | 0 |  |  |
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments | (2,588) |  |  | 0 | (35) | (2,588) | 0 | 0 | 0 | 0 | 0 |  |  |
Impairment of marketable securities | 2,588 | 35 |  |  |  |  |  |  |  |  |  |  |  |
Interest and other income | (1,983) | 3,856 |  | 840 | 899 | 46 | 234 | (2,211) | 3,563 | (658) | (840) |  |  |
Interest Expense | 13,054 | 9,732 |  | 10,183 | 5,698 | 26 | 264 | 3,503 | 4,610 | (658) | (840) |  |  |
Nonoperating Income (Expense) | (29,061) | 11,885 |  | (9,869) | (5,694) | (3,241) | 4,197 | (15,951) | 13,382 | 0 | 0 |  |  |
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest | (41,880) | 23,515 |  | (23,884) | (15,998) | (5,398) | 21,401 | (12,598) | 18,112 | 0 | 0 |  |  |
Income tax expense (benefit) | (4,689) | 11,245 |  | 146 | 2,486 | 0 | (780) | (4,835) | 7,979 | 0 | 0 |  |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | (37,191) | 12,270 |  | (24,030) | (18,484) | (5,398) | 20,621 | (7,763) | 10,133 | 0 | 0 |  |  |
Income (Loss) from Equity Method Investments | 0 | 0 |  | (13,161) | 30,754 | 178 | 0 | 0 | 0 | 12,983 | (30,754) |  |  |
NET INCOME (LOSS) | (37,191) | 12,270 |  | (37,191) | 12,270 | (5,220) | 20,621 | (7,763) | 10,133 | 12,983 | (30,754) |  |  |
Marketable Securities, Unrealized Gain (Loss) |  |  |  | 371 | (3,566) | 467 | 0 | 0 | 0 | (467) | 0 |  |  |
Unrealized gain (loss) on available for sale securities | 371 | (3,566) |  |  |  |  |  |  |  |  |  |  |  |
Reclassification adjustments for losses included in net income |  |  |  | 1,587 | 35 | 1,587 | 0 |  | 0 | (1,587) | 0 |  |  |
Reclassification adjustments for other than temporary impairment of marketable securities | 1,587 | 35 |  |  |  |  |  |  |  |  |  |  |  |
Other comprehensive income (loss) | 1,958 | (3,531) |  | 1,958 | (3,531) | 2,054 | 0 | 0 | 0 | (2,054) | 0 |  |  |
COMPREHENSIVE INCOME | $ (35,233) | $ 8,739 |  | $ (35,233) | $ 8,739 | $ (3,166) | $ 20,621 | $ (7,763) | $ 10,133 | $ 10,929 | $ (30,754) |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  | 7.875% |  | 7.875%
[1] | Excludes amortization.

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