Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Mar. 12, 2014	Jan. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Total Revenue	$ 635,742		$ 745,994		$ 895,492
Costs applicable to sales	477,945	[1]	463,663	[1]	454,562	[1]
Amortization	162,436		229,564		216,032
General and Administrative Expense	40,845		55,343		32,977
Exploration Expense, Mining	21,740		22,360		26,270
Litigation settlement	0		32,046		0
Impairment of Long-Lived Assets Held-for-use	1,472,721		772,993		5,825
Pre-development, reclamation, and other	26,037		15,184		4,086
Total cost and expenses	2,201,724		1,591,153		739,752
Loss on termination of revolving credit facility	0		0		(1,036)
Gain (loss) on derivative instruments	(3,618)		(82,768)		23,487
Impairment of equity securities	(6,593)		(18,308)		(605)
Interest income and other, net	1,375		13,323		15,041
Interest expense, net	(47,546)		(41,303)		(26,169)
Total other income (expense), net	(49,146)		36,480		(36,256)
Total	(1,615,128)		(808,679)		119,484
Income and mining tax (expense) benefit	459,244		158,116		(70,807)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(1,155,884)		(650,563)		48,677
Income (Loss) from Equity Method Investments	0		0		0
NET INCOME (LOSS)	(1,155,884)		(650,563)		48,677
Unrealized gain (loss) on equity securities	(2,290)		(8,489)		(3,351)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	346		83		0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	4,042		11,221		605
Other comprehensive income (loss)	2,098		2,815		(2,746)
COMPREHENSIVE INCOME (LOSS)	(1,153,786)		(647,748)		45,931
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Total Revenue	0		0		0
Costs applicable to sales	0		0		0
Amortization	1,805		1,066		521
General and Administrative Expense	39,976		50,213		30,699
Exploration Expense, Mining	3,560		1,602		1,946
Litigation settlement			0
Impairment of Long-Lived Assets Held-for-use	0		0		0
Pre-development, reclamation, and other	8,813		0		0
Total cost and expenses	54,154		52,881		33,166
Loss on termination of revolving credit facility					0
Gain (loss) on derivative instruments	(1,812)		1,346		(3,477)
Impairment of equity securities	0		18,097		605
Interest income and other, net	4,406		13,408		5,744
Interest expense, net	(38,389)		(25,652)		4,158
Total other income (expense), net	(32,171)		(31,687)		4,458
Total	(86,325)		(84,568)		(28,708)
Income and mining tax (expense) benefit	1,742		78,332		(3,844)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(84,583)		(6,236)		(32,552)
Income (Loss) from Equity Method Investments	(1,071,301)		(644,327)		81,229
NET INCOME (LOSS)	(1,155,884)		(650,563)		48,677
Marketable Securities, Unrealized Gain (Loss)	(2,290)		(8,489)		(3,351)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	346		83
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	4,042		11,221		605
Other comprehensive income (loss)	2,098		2,815		(2,746)
COMPREHENSIVE INCOME (LOSS)	(1,153,786)		(647,748)		45,931
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total Revenue	261,963		268,023		243,380
Costs applicable to sales	196,805		182,444		159,151
Amortization	65,100		71,655		48,065
General and Administrative Expense	6		3,245		1,101
Exploration Expense, Mining	11,157		8,920		7,930
Litigation settlement			32,046
Impairment of Long-Lived Assets Held-for-use	107,832		130,694		0
Pre-development, reclamation, and other	3,889		3,093		1,323
Total cost and expenses	384,789		432,097		217,570
Loss on termination of revolving credit facility					(1,036)
Gain (loss) on derivative instruments	(3,653)		(7,896)		(4,089)
Impairment of equity securities	6,593		211		0
Interest income and other, net	(430)		(1,539)		859
Interest expense, net	(891)		(445)		2,997
Total other income (expense), net	(4,261)		5,701		915
Total	(127,087)		(158,373)		26,725
Income and mining tax (expense) benefit	(2,224)		(155)		(2,930)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(129,311)		(158,528)		23,795
Income (Loss) from Equity Method Investments	(4,181)		(68)		0
NET INCOME (LOSS)	(133,492)		(158,596)		23,795
Marketable Securities, Unrealized Gain (Loss)	(2,272)		(552)		0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	328		0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	4,042		211		0
Other comprehensive income (loss)	2,098		(341)		0
COMPREHENSIVE INCOME (LOSS)	(131,394)		(158,937)		23,795
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Total Revenue	373,779		477,971		652,112
Costs applicable to sales	281,140		281,219		295,411
Amortization	95,531		156,843		167,446
General and Administrative Expense	863		1,885		1,177
Exploration Expense, Mining	7,023		11,838		16,394
Litigation settlement			0
Impairment of Long-Lived Assets Held-for-use	1,364,889		642,299		5,825
Pre-development, reclamation, and other	13,335		12,091		2,763
Total cost and expenses	1,762,781		1,106,175		489,016
Loss on termination of revolving credit facility					0
Gain (loss) on derivative instruments	1,847		(76,218)		31,053
Impairment of equity securities	0		0		0
Interest income and other, net	227		4,602		13,071
Interest expense, net	(11,094)		(18,354)		23,647
Total other income (expense), net	(12,714)		62,466		(41,629)
Total	(1,401,716)		(565,738)		121,467
Income and mining tax (expense) benefit	459,726		79,939		(64,033)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(941,990)		(485,799)		57,434
Income (Loss) from Equity Method Investments	0		0		0
NET INCOME (LOSS)	(941,990)		(485,799)		57,434
Marketable Securities, Unrealized Gain (Loss)	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
Other comprehensive income (loss)	0		0		0
COMPREHENSIVE INCOME (LOSS)	(941,990)		(485,799)		57,434
Eliminations
Condensed Financial Statements, Captions [Line Items]
Total Revenue	0		0		0
Costs applicable to sales	0		0		0
Amortization	0		0		0
General and Administrative Expense	0		0		0
Exploration Expense, Mining	0		0		0
Litigation settlement			0
Impairment of Long-Lived Assets Held-for-use	0		0		0
Pre-development, reclamation, and other	0		0		0
Total cost and expenses	0		0		0
Loss on termination of revolving credit facility					0
Gain (loss) on derivative instruments	0		0		0
Impairment of equity securities	0		0		0
Interest income and other, net	(2,828)		(3,148)		(4,633)
Interest expense, net	(2,828)		3,148		4,633
Total other income (expense), net	0		0		0
Total	0		0		0
Income and mining tax (expense) benefit	0		0		0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0		0		0
Income (Loss) from Equity Method Investments	1,075,482		644,395		(81,229)
NET INCOME (LOSS)	1,075,482		644,395		(81,229)
Marketable Securities, Unrealized Gain (Loss)	2,272		552		0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(328)		0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	(4,042)		(211)		0
Other comprehensive income (loss)	(2,098)		341		0
COMPREHENSIVE INCOME (LOSS)	1,073,384		644,736		(81,229)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount	$ 434,900						$ 150,000	$ 300,000
Debt Instrument, Interest Rate, Stated Percentage	7.875%		7.875%					7.875%

[1] Excludes amortization.