Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014 Coeur Mining, Inc.	Sep. 30, 2013 Coeur Mining, Inc.	Sep. 30, 2014 Coeur Mining, Inc.	Sep. 30, 2013 Coeur Mining, Inc.	Sep. 30, 2014 Guarantor Subsidiaries	Sep. 30, 2013 Guarantor Subsidiaries	Sep. 30, 2014 Guarantor Subsidiaries	Sep. 30, 2013 Guarantor Subsidiaries	Sep. 30, 2014 Non-Guarantor Subsidiaries	Sep. 30, 2013 Non-Guarantor Subsidiaries	Sep. 30, 2014 Non-Guarantor Subsidiaries	Sep. 30, 2013 Non-Guarantor Subsidiaries	Sep. 30, 2014 Eliminations	Sep. 30, 2013 Eliminations	Sep. 30, 2014 Eliminations	Sep. 30, 2013 Eliminations	Sep. 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	170,938		200,825		495,133		577,147		0	0	0	0	78,468	63,187	199,716	207,689	92,470	137,638	295,417	369,458	0	0	0	0
Costs applicable to sales	125,910	[1]	131,805	[1]	351,492	[1]	362,250	[1]	0	0	0	0	58,386	45,424	149,223	142,434	67,524	86,381	202,269	219,816	0	0	0	0
Amortization	41,985		60,097		123,834		166,686		473	244	1,298	694	18,485	20,606	50,565	50,903	23,027	39,247	71,971	115,089	0	0	0	0
General and Administrative Expense	8,515		16,240		31,809		41,492		8,251	15,622	31,019	37,975	2	(143)	5	1,400	262	761	785	2,117	0	0	0	0
Exploration Expense, Mining	6,587		3,305		15,957		16,920		1,056	506	2,592	1,169	2,915	2,305	7,819	5,167	2,616	494	5,546	10,584	0	0	0	0
Litigation settlement	0		0		0		32,046			0		0		0		32,046		0		0		0		0
Pre-development, reclamation, and other	4,244		4,732		20,019		11,896		180	0	532	0	115	606	2,958	2,166	3,949	4,126	16,529	9,730	0	0	0	0
Total cost and expenses	187,241		216,179		543,111		631,290		9,960	16,372	35,441	39,838	79,903	68,798	210,570	234,116	97,378	131,009	297,100	357,336	0	0	0	0
Loss on termination of revolving credit facility	0		0		(3,035)		0
Gain (loss) on derivative instruments	16,105		(20,646)		(3,611)		63,905		2,990	(71)	1,008	(1,593)	4,345	(5,315)	1,835	5,263	8,770	(15,260)	(6,454)	60,235	0	0	0	0
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	(1,092)				(4,614)				0	(870)	0	(18,097)	(1,092)	0	(4,614)	0	0	0	0	0	0	0	0	0
Impairment of marketable securities	1,092		870		4,614		18,097
Interest and other income	(211)		(1,791)		(2,313)		2,484		1,006	784	2,921	2,991	(325)	87	(267)	562	(165)	(1,912)	(2,886)	1,404	(727)	(750)	(2,081)	(2,473)
Interest expense, net	(11,616)		(9,662)		(36,980)		(30,324)		(9,159)	(6,665)	(28,557)	(18,984)	(320)	(56)	(660)	(421)	(2,864)	(3,691)	(9,844)	(13,392)	727	750	2,081	2,473
Nonoperating Income (Expense)	3,186		(32,969)		(47,518)		17,968		(5,163)	(6,822)	(24,628)	(35,683)	2,608	(5,284)	(3,706)	5,404	5,741	(20,863)	(19,184)	48,247	0	0	0	0
Income before income taxes	(13,117)		(48,323)		(95,496)		(36,175)		(15,123)	(23,194)	(60,069)	(75,521)	1,173	(10,895)	(14,560)	(21,023)	833	(14,234)	(20,867)	60,369	0	0	0	0
Income tax benefit (expense)	16,583		2,058		18,650		(32,860)		950	5,613	1,076	2,303	(210)	(75)	(629)	(1,584)	15,843	(3,480)	18,203	(33,579)	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	3,466		(46,265)		(76,846)		(69,035)		(14,173)	(17,581)	(58,993)	(73,218)	963	(10,970)	(15,189)	(22,607)	16,676	(17,714)	(2,664)	26,790	0	0	0	0
Income (Loss) from Equity Method Investments	0		0		0		0		17,640	(28,684)	(17,853)	4,183	181	0	480	0	0	0	0	0	(17,821)	28,684	17,373	(4,183)
NET INCOME (LOSS)	3,466		(46,265)		(76,846)		(69,035)		3,467	(46,265)	(76,846)	(69,035)	1,144	(10,970)	(14,709)	(22,607)	16,676	(17,714)	(2,664)	26,790	(17,821)	28,684	17,373	(4,183)
Marketable Securities, Unrealized Gain (Loss)									(1,087)	301		(10,756)	(1,071)	0		0	0	0		0	1,072	0		0
Prior Period Reclassification Adjustment									669	870			669	0			0	0			(669)	0
Unrealized gain (loss) on available for sale securities	(1,086)		301		(1,487)		(10,756)				(1,487)				(1,451)				0				1,451
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	221		136		238		136		221	136	238	18,097	221	0	238	0	0	0	0	0	(221)	0	(238)	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	669		870		2,828		18,097				2,828				2,828				0				(2,828)
Other comprehensive income (loss)	(196)		1,307		1,579		7,477		(197)	1,307	1,579	7,477	(181)	0	1,615	0	0	0	0	0	182	0	(1,615)	0
COMPREHENSIVE INCOME	$ 3,270		$ (44,958)		$ (75,267)		$ (61,558)		$ 3,270	$ (44,958)	$ (75,267)	$ (61,558)	$ 963	$ (10,970)	$ (13,094)	$ (22,607)	$ 16,676	$ (17,714)	$ (2,664)	$ 26,790	$ (17,639)	$ 28,684	$ 15,758	$ (4,183)
Debt Instrument, Interest Rate, Stated Percentage																									7.875%		7.875%	7.875%

[1] Excludes amortization.