Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 12, 2014	Dec. 31, 2013	Jan. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 272,932		$ 206,690
Investments	45,628		0
Receivables	75,806		81,074
Ore on leach pads	59,895		50,495
Inventory	133,578		132,023
Deferred tax assets	34,998		35,008
Prepaid expenses and other	30,835		25,940
Assets, Current	653,672		531,230
Property, plant and equipment, net	476,837		486,273
Mining properties, net	1,740,474		1,751,501
Ore on leach pads	34,485		31,528
Restricted assets	7,426		7,014
Marketable securities	15,646		14,521
Receivables	36,271		36,574
Unamortized Debt Issuance Expense	11,356		10,812
Deferred tax assets	829		1,189
Other Assets, Noncurrent	9,989		15,336
Assets	2,986,985		2,885,978
Accounts payable	49,958		53,847
Accrued liabilities and other	29,861		38,266
Debt	8,095		2,505
Royalty obligations	50,250		48,019
Reclamation	762		913
Deferred tax liabilities	1,858		1,011
Liabilities, Current	140,784		144,561
Debt	456,152		306,130
Royalty obligations	62,390		65,142
Reclamation	58,630		57,515
Deferred tax liabilities	544,096		556,246
Other long-term liabilities	27,236		25,817
Intercompany Payable Receivable	0		0
Liabilities, Noncurrent	1,148,504		1,010,850
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0		0
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,584,671 at March 31, 2014 and 102,843,003 at December 31, 2013	1,035		1,028
Additional paid-in capital	2,783,520		2,781,164
Accumulated deficit	(1,083,910)		(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,948)		(4,906)
Stockholders' Equity Attributable to Parent	1,697,697		1,730,567
Liabilities and Equity	2,986,985		2,885,978
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	204,045		137,076
Investments	45,628		0
Receivables	102		530
Ore on leach pads	0		0
Inventory	0		0
Deferred tax assets	0		0
Prepaid expenses and other	3,729		4,128
Assets, Current	253,504		141,734
Property, plant and equipment, net	6,576		5,980
Mining properties, net	0		0
Ore on leach pads	0		0
Restricted assets	830		830
Marketable securities	0		0
Receivables	0		0
Unamortized Debt Issuance Expense	11,356		10,812
Deferred tax assets	955		955
Other Assets, Noncurrent	54,521		53,858
Assets	1,559,108		1,456,649
Accounts payable	1,301		1,963
Accrued liabilities and other	9,811		16,693
Debt	5,334		0
Royalty obligations	0		0
Reclamation	0		0
Deferred tax liabilities	0		0
Liabilities, Current	16,446		18,656
Debt	452,964		305,335
Royalty obligations	0		0
Reclamation	0		0
Deferred tax liabilities	37,096		37,095
Other long-term liabilities	2,634		2,467
Intercompany Payable Receivable	(647,729)		(637,471)
Liabilities, Noncurrent	(155,035)		(292,574)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,231,366		1,242,480
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,584,671 at March 31, 2014 and 102,843,003 at December 31, 2013	1,035		1,028
Additional paid-in capital	2,783,520		2,781,164
Accumulated deficit	(1,083,910)		(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,948)		(4,906)
Stockholders' Equity Attributable to Parent	1,697,697		1,730,567
Liabilities and Equity	1,559,108		1,456,649
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	754		991
Investments	0		0
Receivables	13,121		19,982
Ore on leach pads	59,895		50,495
Inventory	37,386		35,290
Deferred tax assets	0		0
Prepaid expenses and other	9,449		5,282
Assets, Current	120,605		112,040
Property, plant and equipment, net	141,364		143,118
Mining properties, net	236,130		235,537
Ore on leach pads	34,485		31,528
Restricted assets	50		50
Marketable securities	15,646		14,521
Receivables	0		0
Unamortized Debt Issuance Expense	0		0
Deferred tax assets			0
Other Assets, Noncurrent	31,372		14,616
Assets	603,854		597,625
Accounts payable	17,840		15,864
Accrued liabilities and other	7,904		8,016
Debt	1,903		1,262
Royalty obligations	4,951		3,934
Reclamation	0		0
Deferred tax liabilities	847		0
Liabilities, Current	33,445		29,076
Debt	2,765		255
Royalty obligations	17,352		17,696
Reclamation	46,627		45,894
Deferred tax liabilities	1,618		1,618
Other long-term liabilities	518		544
Intercompany Payable Receivable	428,962		427,085
Liabilities, Noncurrent	497,842		493,092
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	24,202		46,215
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,584,671 at March 31, 2014 and 102,843,003 at December 31, 2013	250		250
Additional paid-in capital	79,712		79,712
Accumulated deficit	(4,544)		401
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,851)		(4,906)
Stockholders' Equity Attributable to Parent	72,567		75,457
Liabilities and Equity	603,854		597,625
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	68,133		68,623
Investments	0		0
Receivables	62,583		60,562
Ore on leach pads	0		0
Inventory	96,192		96,733
Deferred tax assets	34,998		35,008
Prepaid expenses and other	17,657		16,530
Assets, Current	279,563		277,456
Property, plant and equipment, net	328,897		337,175
Mining properties, net	1,504,344		1,515,964
Ore on leach pads	0		0
Restricted assets	6,546		6,134
Marketable securities	0		0
Receivables	36,271		36,574
Unamortized Debt Issuance Expense	0		0
Deferred tax assets	(126)		234
Other Assets, Noncurrent	324,489		320,425
Assets	4,080,974		4,072,761
Accounts payable	30,817		36,020
Accrued liabilities and other	13,214		14,611
Debt	335,137		309,472
Royalty obligations	45,299		44,085
Reclamation	643		794
Deferred tax liabilities	1,011		1,011
Liabilities, Current	426,121		405,993
Debt	65,469		64,820
Royalty obligations	45,038		47,446
Reclamation	12,122		11,740
Deferred tax liabilities	505,382		517,533
Other long-term liabilities	24,084		22,806
Intercompany Payable Receivable	218,767		210,386
Liabilities, Noncurrent	870,862		874,731
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,600,990		1,578,799
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,584,671 at March 31, 2014 and 102,843,003 at December 31, 2013	122,666		122,666
Additional paid-in capital	3,258,037		3,258,037
Accumulated deficit	(596,712)		(588,666)
Accumulated Other Comprehensive Income (Loss), Net of Tax	0		0
Stockholders' Equity Attributable to Parent	2,783,991		2,792,037
Liabilities and Equity	4,080,974		4,072,761
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0		0
Investments	0		0
Receivables	0		0
Ore on leach pads	0		0
Inventory	0		0
Deferred tax assets	0		0
Prepaid expenses and other	0		0
Assets, Current	0		0
Property, plant and equipment, net	0		0
Mining properties, net	0		0
Ore on leach pads	0		0
Restricted assets	0		0
Marketable securities	0		0
Receivables	0		0
Unamortized Debt Issuance Expense	0		0
Deferred tax assets	0		0
Other Assets, Noncurrent	(400,393)		(373,563)
Assets	(3,256,951)		(3,241,057)
Accounts payable	0		0
Accrued liabilities and other	(1,068)		(1,054)
Debt	(334,279)		(308,229)
Royalty obligations	0		0
Reclamation	119		119
Deferred tax liabilities	0		0
Liabilities, Current	(335,228)		(309,164)
Debt	(65,046)		(64,280)
Royalty obligations	0		0
Reclamation	(119)		(119)
Deferred tax liabilities	0		0
Other long-term liabilities	0		0
Intercompany Payable Receivable	0		0
Liabilities, Noncurrent	(65,165)		(64,399)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(2,856,558)		(2,867,494)
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,584,671 at March 31, 2014 and 102,843,003 at December 31, 2013	(122,916)		(122,916)
Additional paid-in capital	(3,337,749)		(3,337,749)
Accumulated deficit	601,256		588,265
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,851		4,906
Stockholders' Equity Attributable to Parent	(2,856,558)		(2,867,494)
Liabilities and Equity	(3,256,951)		(3,241,057)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Face Amount	450,000	150,000		300,000
Debt	452,964		300,000
Debt Instrument, Interest Rate, Stated Percentage	7.875%			7.875%
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Condensed Financial Statements, Captions [Line Items]
Marketable securities	$ 15,646