Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 02, 2014
Condensed Financial Statements, Captions [Line Items]
Revenue		$ 162,552	$ 170,938	$ 481,770	$ 495,133
Costs applicable to sales	[1]	120,237	125,910	354,397	351,492
Amortization		35,497	41,985	107,560	123,834
General and Administrative Expense		6,694	8,515	23,979	31,809
Exploration Expense, Mining		2,112	6,587	9,957	15,957
Pre-development, reclamation, and other		4,938	4,244	13,968	20,019
Total costs and expenses		169,478	187,241	509,861	543,111
Loss on termination of revolving credit facility		0	0	0	(3,035)
Gain (loss) on derivative instruments		5,786	16,105	3,657	(3,611)
Impairment of equity securities		(483)	(1,092)	(2,028)	(4,614)
Other, net		(8,893)	(1,303)	(14,257)	(6,927)
Interest expense, net		(12,446)	(11,616)	(33,945)	(36,980)
Total other income (expense), net		(15,553)	3,186	(44,545)	(47,518)
Income (loss) before income and mining taxes		(22,479)	(13,117)	(72,636)	(95,496)
Income and mining tax benefit (expense)		8,260	16,583	8,451	18,650
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(14,219)	3,466	(64,185)	(76,846)
Income (Loss) from Equity Method Investments		0	0	0	0
NET INCOME (LOSS)		(14,219)	3,466	(64,185)	(76,846)
Unrealized gain (loss) on available for sale securities		(931)	(1,086)	(3,744)	(1,487)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0	221	904	238
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		483	669	2,028	2,828
Other comprehensive income (loss)		(448)	(196)	(812)	1,579
COMPREHENSIVE INCOME (LOSS)		(14,667)	3,270	(64,997)	(75,267)
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Revenue		0	0	0	0
Costs applicable to sales		0	0	0	0
Amortization		495	473	1,493	1,298
General and Administrative Expense		6,563	8,251	23,690	31,019
Exploration Expense, Mining		642	1,056	1,796	2,592
Pre-development, reclamation, and other		887	180	3,437	532
Total costs and expenses		8,587	9,960	30,416	35,441
Gain (loss) on derivative instruments		1,036	2,990	1,178	1,008
Other, net		1,218	1,006	3,108	2,921
Interest expense, net		(11,198)	(9,159)	(29,389)	(28,557)
Total other income (expense), net		(8,944)	(5,163)	(25,103)	(24,628)
Income (loss) before income and mining taxes		(17,531)	(15,123)	(55,519)	(60,069)
Income and mining tax benefit (expense)		516	950	4,011	1,076
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(17,015)	(14,173)	(51,508)	(58,993)
Income (Loss) from Equity Method Investments		2,796	17,640	(12,677)	(17,853)
NET INCOME (LOSS)		(14,219)	3,467	(64,185)	(76,846)
Unrealized gain (loss) on available for sale securities		(931)	(1,087)	(3,744)	(1,487)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax			221	904	238
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		483	669	2,028	2,828
Other comprehensive income (loss)		(448)	(197)	(812)	1,579
COMPREHENSIVE INCOME (LOSS)		(14,667)	3,270	(64,997)	(75,267)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue		93,417	78,468	281,724	199,716
Costs applicable to sales		68,187	58,386	197,475	149,223
Amortization		21,083	18,485	61,422	50,565
General and Administrative Expense		11	2	25	5
Exploration Expense, Mining		(96)	2,915	3,370	7,819
Pre-development, reclamation, and other		1,476	115	4,354	2,958
Total costs and expenses		90,661	79,903	266,646	210,570
Gain (loss) on derivative instruments		1,751	4,345	596	1,835
Other, net		(436)	(1,417)	(2,892)	(4,881)
Interest expense, net		(220)	(320)	(771)	(660)
Total other income (expense), net		1,095	2,608	(3,067)	(3,706)
Income (loss) before income and mining taxes		3,851	1,173	12,011	(14,560)
Income and mining tax benefit (expense)		(1,554)	(210)	(2,836)	(629)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		2,297	963	9,175	(15,189)
Income (Loss) from Equity Method Investments		331	181	491	480
NET INCOME (LOSS)		2,628	1,144	9,666	(14,709)
Unrealized gain (loss) on available for sale securities		(769)	(1,071)	(2,751)	(1,451)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax			221	904	238
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		483	669	2,028	2,828
Other comprehensive income (loss)		(286)	(181)	181	1,615
COMPREHENSIVE INCOME (LOSS)		2,342	963	9,847	(13,094)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue		69,135	92,470	200,046	295,417
Costs applicable to sales		52,050	67,524	156,922	202,269
Amortization		13,919	23,027	44,645	71,971
General and Administrative Expense		120	262	264	785
Exploration Expense, Mining		1,566	2,616	4,791	5,546
Pre-development, reclamation, and other		2,575	3,949	6,177	16,529
Total costs and expenses		70,230	97,378	212,799	297,100
Gain (loss) on derivative instruments		2,999	8,770	1,883	(6,454)
Other, net		(8,649)	(165)	(11,681)	(2,886)
Interest expense, net		(2,054)	(2,864)	(6,577)	(9,844)
Total other income (expense), net		(7,704)	5,741	(16,375)	(19,184)
Income (loss) before income and mining taxes		(8,799)	833	(29,128)	(20,867)
Income and mining tax benefit (expense)		9,298	15,843	7,276	18,203
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		499	16,676	(21,852)	(2,664)
Income (Loss) from Equity Method Investments		0	0	0	0
NET INCOME (LOSS)		499	16,676	(21,852)	(2,664)
Unrealized gain (loss) on available for sale securities		0	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax			0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	0	0	0
Other comprehensive income (loss)		0	0	0	0
COMPREHENSIVE INCOME (LOSS)		499	16,676	(21,852)	(2,664)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenue		0	0	0	0
Costs applicable to sales		0	0	0	0
Amortization		0	0	0	0
General and Administrative Expense		0	0	0	0
Exploration Expense, Mining		0	0	0	0
Pre-development, reclamation, and other		0	0	0	0
Total costs and expenses		0	0	0	0
Gain (loss) on derivative instruments		0	0	0	0
Other, net		(1,026)	(727)	(2,792)	(2,081)
Interest expense, net		1,026	727	2,792	2,081
Total other income (expense), net		0	0	0	0
Income (loss) before income and mining taxes		0	0	0	0
Income and mining tax benefit (expense)		0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		0	0	0	0
Income (Loss) from Equity Method Investments		(3,127)	(17,821)	12,186	17,373
NET INCOME (LOSS)		(3,127)	(17,821)	12,186	17,373
Unrealized gain (loss) on available for sale securities		769	1,072	2,751	1,451
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax			(221)	(904)	(238)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		(483)	(669)	(2,028)	(2,828)
Other comprehensive income (loss)		286	182	(181)	(1,615)
COMPREHENSIVE INCOME (LOSS)		$ (2,841)	(17,639)	$ 12,005	15,758
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.875%		7.875%		7.875%
Operating Segments [Member]
Condensed Financial Statements, Captions [Line Items]
Revenue		$ 162,552	170,938	$ 481,770
Costs applicable to sales		120,237	125,910	354,397
Amortization		35,497	41,985	107,560
Other, net		(8,893)	(1,303)	$ (14,257)	(6,927)
NET INCOME (LOSS)		$ (14,219)	$ 3,466		$ (76,846)
Palmarejo gold stream agreement [Member]
Condensed Financial Statements, Captions [Line Items]
Aggregate deposit to be received							$ 22,000

[1] Excludes amortization.