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
	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.