Supplemental Guarantor Information Condensed Consolidated Statement of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]
Sales Revenue, Goods, Net	$ 200,825	$ 230,593	$ 577,147	$ 689,563
Cost of Goods Sold	(131,728)	(124,967)	(363,437)	(349,344)
Depreciation, Depletion and Amortization	(60,874)	(52,844)	(168,963)	(166,460)
Gross Profit	8,223	52,782	44,747	173,759
General and Administrative Expense	16,240	10,266	41,492	26,456
Costs of Metals Sold	3,305	6,957	16,920	19,829
Gain (Loss) Related to Litigation Settlement	0	0	32,046	0
Impairment of Long-Lived Assets Held-for-use	0	1,293	205	6,106
Pre Development	3,955	277	9,414	1,618
Operating Expenses	23,500	18,793	100,077	54,009
Operating Income (Loss)	(15,277)	33,989	(55,330)	119,750
Gain (Loss) on Derivative Instruments, Net, Pretax	(20,646)	(37,648)	63,905	(44,722)
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	(870)	(605)	(18,097)	(605)
Interest and Other Income	(1,791)	13,269	2,484	15,055
Interest Expense	(9,662)	(7,351)	(30,324)	(21,578)
Nonoperating Income (Expense)	(32,969)	(32,335)	17,968	(51,850)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(48,246)	1,654	(37,362)	67,900
Income Tax Expense (Benefit)	1,981	(17,475)	(31,673)	(56,773)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(46,265)	(15,821)	(69,035)	11,127
Income (Loss) from Equity Method Investments	0	0	0	0
Net Income (Loss) Attributable to Parent	(46,265)	(15,821)	(69,035)	11,127
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Sales Revenue, Goods, Net	0	0	0	0
Cost of Goods Sold	0	0	0	0
Depreciation, Depletion and Amortization	(244)	(134)	(694)	(382)
Gross Profit	(244)	(134)	(694)	(382)
General and Administrative Expense	15,622	9,097	37,975	24,133
Costs of Metals Sold	506	462	1,169	1,279
Gain (Loss) Related to Litigation Settlement	0		0
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	0	0	0	0
Operating Expenses	16,128	9,559	39,144	25,412
Operating Income (Loss)	(16,372)	(9,693)	(39,838)	(25,794)
Gain (Loss) on Derivative Instruments, Net, Pretax	(71)	901	(1,593)	3,696
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	(870)	(605)	(18,097)	(605)
Interest and Other Income	784	1,133	2,991	4,805
Interest Expense	(6,665)	(1,097)	(18,984)	(2,998)
Nonoperating Income (Expense)	(6,822)	332	(35,683)	4,898
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(23,194)	(9,361)	(75,521)	(20,896)
Income Tax Expense (Benefit)	5,613	(465)	2,303	(3,990)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(17,581)	(9,826)	(73,218)	(24,886)
Income (Loss) from Equity Method Investments	(28,684)	(5,995)	4,183	36,013
Net Income (Loss) Attributable to Parent	(46,265)	(15,821)	(69,035)	11,127
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Sales Revenue, Goods, Net	63,187	72,695	207,689	157,106
Cost of Goods Sold	(45,346)	(47,896)	(143,620)	(111,409)
Depreciation, Depletion and Amortization	(21,054)	(13,609)	(52,213)	(33,635)
Gross Profit	(3,213)	11,190	11,856	12,062
General and Administrative Expense	(143)	871	1,400	1,637
Costs of Metals Sold	2,305	2,940	5,167	5,880
Gain (Loss) Related to Litigation Settlement	0		32,046
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	159	277	857	1,580
Operating Expenses	2,321	4,088	39,470	9,097
Operating Income (Loss)	(5,534)	7,102	(27,614)	2,965
Gain (Loss) on Derivative Instruments, Net, Pretax	(5,315)	(4,283)	5,263	(2,647)
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	87	86	562	870
Interest Expense	(56)	(1,840)	(421)	(3,648)
Nonoperating Income (Expense)	(5,284)	(6,037)	5,404	(5,425)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(10,818)	1,065	(22,210)	(2,460)
Income Tax Expense (Benefit)	(152)	0	(397)	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(10,970)	1,065	(22,607)	(2,460)
Income (Loss) from Equity Method Investments	0	0	0
Net Income (Loss) Attributable to Parent	(10,970)	1,065	(22,607)	(2,460)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Sales Revenue, Goods, Net	137,638	157,898	369,458	532,457
Cost of Goods Sold	(86,382)	(77,071)	(219,817)	(237,935)
Depreciation, Depletion and Amortization	(39,576)	(39,101)	(116,056)	(132,443)
Gross Profit	11,680	41,726	33,585	162,079
General and Administrative Expense	761	298	2,117	686
Costs of Metals Sold	494	3,555	10,584	12,670
Gain (Loss) Related to Litigation Settlement	0		0
Impairment of Long-Lived Assets Held-for-use	0	1,293	205	6,106
Pre Development	3,796	0	8,557	38
Operating Expenses	5,051	5,146	21,463	19,500
Operating Income (Loss)	6,629	36,580	12,122	142,579
Gain (Loss) on Derivative Instruments, Net, Pretax	(15,260)	(34,266)	60,235	(45,771)
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	(1,912)	13,018	1,404	13,214
Interest Expense	(3,691)	(5,382)	(13,392)	(18,766)
Nonoperating Income (Expense)	(20,863)	(26,630)	48,247	(51,323)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	(14,234)	9,950	60,369	91,256
Income Tax Expense (Benefit)	(3,480)	(17,010)	(33,579)	(52,783)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(17,714)	(7,060)	26,790	38,473
Income (Loss) from Equity Method Investments	0	0	0
Net Income (Loss) Attributable to Parent	(17,714)	(7,060)	26,790	38,473
Eliminations
Condensed Financial Statements, Captions [Line Items]
Sales Revenue, Goods, Net	0	0	0	0
Cost of Goods Sold	0	0	0	0
Depreciation, Depletion and Amortization	0	0	0	0
Gross Profit	0	0	0	0
General and Administrative Expense	0	0	0	0
Costs of Metals Sold	0	0	0	0
Gain (Loss) Related to Litigation Settlement	0		0
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	0	0	0	0
Operating Expenses	0	0	0	0
Operating Income (Loss)	0	0	0	0
Gain (Loss) on Derivative Instruments, Net, Pretax	0	0	0	0
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	(750)	(968)	(2,473)	(3,834)
Interest Expense	750	968	2,473	3,834
Nonoperating Income (Expense)	0	0	0	0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	0	0	0	0
Income Tax Expense (Benefit)	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Income (Loss) from Equity Method Investments	28,684	5,995	(4,183)	(36,013)
Net Income (Loss) Attributable to Parent	$ 28,684	$ 5,995	$ (4,183)	$ (36,013)