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Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 Coeur Mining, Inc. | Jun. 30, 2013 Coeur Mining, Inc. | Jun. 30, 2014 Coeur Mining, Inc. | Jun. 30, 2013 Coeur Mining, Inc. | Jun. 30, 2014 Guarantor Subsidiaries | Jun. 30, 2013 Guarantor Subsidiaries | Jun. 30, 2014 Guarantor Subsidiaries | Jun. 30, 2013 Guarantor Subsidiaries | Jun. 30, 2014 Non-Guarantor Subsidiaries | Jun. 30, 2013 Non-Guarantor Subsidiaries | Jun. 30, 2014 Non-Guarantor Subsidiaries | Jun. 30, 2013 Non-Guarantor Subsidiaries | Jun. 30, 2014 Eliminations | Jun. 30, 2013 Eliminations | Jun. 30, 2014 Eliminations | Jun. 30, 2013 Eliminations | Jun. 30, 2014 Senior Notes due Two Thousand Twenty One [Member] | Mar. 12, 2014 Senior Notes due Two Thousand Twenty One [Member] | Dec. 31, 2013 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 | 164,562 |  | 204,525 |  | 324,195 |  | 376,322 |  | 0 | 0 | 0 | 0 | 60,748 | 65,754 | 121,248 | 144,502 | 103,814 | 138,771 | 202,947 | 231,820 | 0 | 0 | 0 | 0 |  |  |  |
Costs applicable to sales | 118,687 | [1] | 142,386 | [1] | 225,583 | [1] | 230,444 | [1] | 0 | 0 | 0 | 0 | 47,599 | 52,669 | 90,837 | 97,010 | 71,088 | 89,717 | 134,746 | 133,434 | 0 | 0 | 0 | 0 |  |  |  |
Amortization | 41,422 |  | 56,894 |  | 81,849 |  | 106,589 |  | 448 | 231 | 825 | 450 | 16,784 | 15,151 | 32,080 | 30,295 | 24,190 | 41,512 | 48,944 | 75,844 | 0 | 0 | 0 | 0 |  |  |  |
General and Administrative Expense | 9,398 |  | 15,026 |  | 23,294 |  | 25,253 |  | 9,716 | 12,617 | 22,768 | 22,354 | (163) | 1,375 | 3 | 1,542 | (155) | 1,034 | 523 | 1,357 | 0 | 0 | 0 | 0 |  |  |  |
Exploration Expense, Mining | 5,153 |  | 6,774 |  | 9,370 |  | 13,615 |  | 950 | 314 | 1,536 | 663 | 2,483 | 1,398 | 4,904 | 2,862 | 1,720 | 5,062 | 2,930 | 10,090 | 0 | 0 | 0 | 0 |  |  |  |
Loss Related to Litigation Settlement | 0 |  | 32,046 |  | 0 |  | 32,046 |  |  | 0 |  | 0 |  | 32,046 |  | 32,046 |  | 0 |  | 0 |  | 0 |  | 0 |  |  |  |
Pre-development, reclamation, and other | 8,760 |  | 1,817 |  | 15,775 |  | 7,163 |  | 352 | 0 | 352 | 0 | 1,307 | 1,135 | 2,843 | 1,563 | 7,101 | 682 | 12,580 | 5,600 | 0 | 0 | 0 | 0 |  |  |  |
Total cost and expenses | 183,420 |  | 254,943 |  | 355,871 |  | 415,110 |  | 11,466 | 13,162 | 25,481 | 23,467 | 68,010 | 103,774 | 130,667 | 165,318 | 103,944 | 138,007 | 199,723 | 226,325 | 0 | 0 | 0 | 0 |  |  |  |
Loss on termination of revolving credit facility | 0 |  | 0 |  | (3,035) |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (8,282) |  | 66,754 |  | (19,717) |  | 84,550 |  | (1,456) | (662) | (1,982) | (1,522) | (1,837) | 6,350 | (2,510) | 10,577 | (4,989) | 61,066 | (15,225) | 75,495 | 0 | 0 | 0 | 0 |  |  |  |
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments | (934) |  |  |  | (3,522) |  |  |  | 0 | (17,192) | 0 | (17,227) | (934) | 0 | (3,522) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  |  |  |
Impairment of marketable securities | 934 |  | 17,192 |  | 3,522 |  | 17,227 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest and other income | (116) |  | 419 |  | (2,100) |  | 4,275 |  | 1,075 | 1,309 | 1,915 | 2,208 | 12 | 241 | 58 | 475 | (507) | (247) | (2,720) | 3,316 | (696) | (884) | (1,353) | (1,724) |  |  |  |
Interest expense, net | (12,310) |  | (10,930) |  | (25,365) |  | (20,662) |  | (9,215) | (6,623) | (19,398) | (12,320) | (314) | (100) | (340) | (364) | (3,477) | (5,091) | (6,980) | (9,702) | 696 | 884 | 1,353 | 1,724 |  |  |  |
Nonoperating Income (Expense) | (21,642) |  | 39,051 |  | (50,704) |  | 50,936 |  | (9,596) | (23,168) | (19,465) | (28,861) | (3,073) | 6,491 | (6,314) | 10,688 | (8,973) | 55,728 | (24,925) | 69,109 | 0 | 0 | 0 | 0 |  |  |  |
Income before income taxes | (40,500) |  | (11,367) |  | (82,380) |  | 12,148 |  | (21,062) | (36,330) | (44,946) | (52,328) | (10,335) | (31,529) | (15,733) | (10,128) | (9,103) | 56,492 | (21,701) | 74,604 | 0 | 0 | 0 | 0 |  |  |  |
Income tax benefit (expense) | (2,621) |  | (23,673) |  | 2,068 |  | (34,918) |  | 273 | (824) | 127 | (3,310) | (419) | (730) | (419) | (1,510) | (2,475) | (22,119) | 2,360 | (30,098) | 0 | 0 | 0 | 0 |  |  |  |
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | (43,121) |  | (35,040) |  | (80,312) |  | (22,770) |  | (20,789) | (37,154) | (44,819) | (55,638) | (10,754) | (32,259) | (16,152) | (11,638) | (11,578) | 34,373 | (19,341) | 44,506 | 0 | 0 | 0 | 0 |  |  |  |
Income (Loss) from Equity Method Investments | 0 |  | 0 |  | 0 |  | 0 |  | (22,332) | 2,114 | (35,493) | 32,868 | 121 | 0 | 299 | 0 | 0 | 0 | 0 | 0 | 22,211 | (2,114) | 35,194 | (32,868) |  |  |  |
NET INCOME (LOSS) | (43,121) |  | (35,040) |  | (80,312) |  | (22,770) |  | (43,121) | (35,040) | (80,312) | (22,770) | (10,633) | (32,259) | (15,853) | (11,638) | (11,578) | 34,373 | (19,341) | 44,506 | 22,211 | (2,114) | 35,194 | (32,868) |  |  |  |
Marketable Securities, Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | (773) | (7,491) |  | (11,057) | (847) | 0 |  | 0 | 0 | 0 |  | 0 | 847 | 0 |  | 0 |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  | 572 | 17,192 |  |  | 572 | 0 |  |  | 0 | 0 |  |  | (572) | 0 |  |  |  |  |  |
Unrealized gain (loss) on available for sale securities | (773) |  | (7,491) |  | (401) |  | (11,057) |  |  |  | (401) |  |  |  | (380) |  |  |  | 0 |  |  |  | 380 |  |  |  |  |
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax | 17 |  | 0 |  | 17 |  | 0 |  | 17 |  | 17 | (17,227) | 17 |  | 17 | 0 | 0 |  | 0 | 0 | (17) |  | (17) | 0 |  |  |  |
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax | 572 |  | 17,192 |  | 2,159 |  | 17,227 |  |  |  | 2,159 |  |  |  | 2,159 |  |  |  | 0 |  |  |  | (2,159) |  |  |  |  |
Other comprehensive income (loss) | (184) |  | 9,701 |  | 1,775 |  | 6,170 |  | (184) | 9,701 | 1,775 | 6,170 | (258) | 0 | 1,796 | 0 | 0 | 0 | 0 | 0 | 258 | 0 | (1,796) | 0 |  |  |  |
COMPREHENSIVE INCOME | $ (43,305) |  | $ (25,339) |  | $ (78,537) |  | $ (16,600) |  | $ (43,305) | $ (25,339) | $ (78,537) | $ (16,600) | $ (10,891) | $ (32,259) | $ (14,057) | $ (11,638) | $ (11,578) | $ 34,373 | $ (19,341) | $ 44,506 | $ 22,469 | $ (2,114) | $ 33,398 | $ (32,868) |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.875% |  | 7.875% | 7.875%
[1] | Excludes amortization.

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