Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 270,861	$ 206,690
Receivables	116,921	81,074
Ore on leach pads	48,204	50,495
Inventory	114,931	132,023
Deferred tax assets	7,364	35,008
Prepaid expenses and other	15,523	25,940
Assets, Current	573,804	531,230
Property, plant, and equipment, net	227,911	486,273
Mining properties, net	501,192	1,751,501
Ore on leach pads	37,889	31,528
Restricted assets	7,037	7,014
Equity securities	5,982	14,521
Receivables	21,686	36,574
Unamortized Debt Issuance Expense	9,851	10,812
Deferred tax assets	60,151	1,189
Other Assets, Noncurrent	9,915	15,336
TOTAL ASSETS	1,455,418	2,885,978
Accounts payable	49,052	53,847
Accrued liabilities and other	51,513	38,266
Debt	17,498	2,505
Royalty obligations	43,678	48,019
Reclamation	3,871	913
Deferred tax liabilities	8,078	1,011
Liabilities, Current	173,690	144,561
Debt	460,899	306,130
Royalty obligations	27,651	65,142
Reclamation	66,943	57,515
Deferred tax liabilities	111,006	556,246
Other long-term liabilities	29,911	25,817
Intercompany Payable Receivable	0	0
Non-current liabilities	696,410	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 103,384,408 at December 31, 2014 and 102,843,003 at December 31, 2013	1,034	1,028
Additional paid-in capital	2,789,695	2,781,164
Accumulated deficit	(2,202,603)	(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,808)	(4,906)
Stockholders' equity attributable to parent	585,318	1,730,567	2,198,280	2,136,721
Liabilities and Equity	1,455,418	2,885,978
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	210,361	137,076
Receivables	87	530
Ore on leach pads	0	0
Inventory	0	0
Deferred tax assets	393	0
Prepaid expenses and other	6,349	4,128
Assets, Current	217,190	141,734
Property, plant, and equipment, net	6,155	5,980
Mining properties, net	12,004	0
Ore on leach pads	0	0
Restricted assets	897	830
Equity securities	0	0
Receivables	0	0
Unamortized Debt Issuance Expense	9,851	10,812
Deferred tax assets	30,419	955
Other Assets, Noncurrent	50,813	53,858
TOTAL ASSETS	456,242	1,456,649
Accounts payable	3,414	1,963
Accrued liabilities and other	22,588	16,693
Debt	5,334	0
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	7,142	0
Liabilities, Current	38,478	18,656
Debt	437,455	305,335
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	53,201	37,095
Other long-term liabilities	2,582	2,467
Intercompany Payable Receivable	(660,792)	(637,471)
Non-current liabilities	(167,554)	(292,574)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	128,913	1,242,480
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014 and 102,843,003 at December 31, 2013	1,034	1,028
Additional paid-in capital	2,789,695	2,781,164
Accumulated deficit	(2,202,603)	(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,808)	(4,906)
Stockholders' equity attributable to parent	585,318	1,730,567
Liabilities and Equity	456,242	1,456,649
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	5,781	991
Receivables	11,151	19,982
Ore on leach pads	48,204	50,495
Inventory	54,983	35,290
Deferred tax assets	0	0
Prepaid expenses and other	4,557	5,282
Assets, Current	124,676	112,040
Property, plant, and equipment, net	107,084	143,118
Mining properties, net	159,124	235,537
Ore on leach pads	37,889	31,528
Restricted assets	50	50
Equity securities	5,982	14,521
Receivables	0	0
Unamortized Debt Issuance Expense	0	0
Deferred tax assets	0	0
Other Assets, Noncurrent	5,522	14,616
TOTAL ASSETS	485,942	597,625
Accounts payable	13,391	15,864
Accrued liabilities and other	11,207	8,016
Debt	7,476	1,262
Royalty obligations	5,747	3,934
Reclamation	3,401	0
Deferred tax liabilities	848	0
Liabilities, Current	42,070	29,076
Debt	12,806	255
Royalty obligations	9,623	17,696
Reclamation	46,792	45,894
Deferred tax liabilities	2,963	1,618
Other long-term liabilities	469	544
Intercompany Payable Receivable	427,156	427,085
Non-current liabilities	499,809	493,092
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	45,615	46,215
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014 and 102,843,003 at December 31, 2013	250	250
Additional paid-in capital	79,712	79,712
Accumulated deficit	(133,091)	401
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,808)	(4,906)
Stockholders' equity attributable to parent	(55,937)	75,457
Liabilities and Equity	485,942	597,625
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	54,719	68,623
Receivables	105,683	60,562
Ore on leach pads	0	0
Inventory	59,948	96,733
Deferred tax assets	6,971	35,008
Prepaid expenses and other	4,617	16,530
Assets, Current	231,938	277,456
Property, plant, and equipment, net	114,672	337,175
Mining properties, net	330,064	1,515,964
Ore on leach pads	0	0
Restricted assets	6,090	6,134
Equity securities	0	0
Receivables	21,686	36,574
Unamortized Debt Issuance Expense	0	0
Deferred tax assets	29,732	234
Other Assets, Noncurrent	4,394	320,425
TOTAL ASSETS	738,576	4,072,761
Accounts payable	32,247	36,020
Accrued liabilities and other	17,718	14,611
Debt	4,688	309,472
Royalty obligations	37,931	44,085
Reclamation	1,621	794
Deferred tax liabilities	88	1,011
Liabilities, Current	94,293	405,993
Debt	61,452	64,820
Royalty obligations	18,028	47,446
Reclamation	19,000	11,740
Deferred tax liabilities	54,842	517,533
Other long-term liabilities	26,860	22,806
Intercompany Payable Receivable	233,636	210,386
Non-current liabilities	413,818	874,731
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	1,578,799
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014 and 102,843,003 at December 31, 2013	128,299	122,666
Additional paid-in capital	1,682,830	3,258,037
Accumulated deficit	(1,580,664)	(588,666)
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	0
Stockholders' equity attributable to parent	230,465	2,792,037
Liabilities and Equity	738,576	4,072,761
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	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
Equity securities	0	0
Receivables	0	0
Unamortized Debt Issuance Expense	0	0
Deferred tax assets	0	0
Other Assets, Noncurrent	(50,814)	(373,563)
TOTAL ASSETS	(225,342)	(3,241,057)
Accounts payable	0	0
Accrued liabilities and other	0	(1,054)
Debt	0	(308,229)
Royalty obligations	0	0
Reclamation	(1,151)	119
Deferred tax liabilities	0	0
Liabilities, Current	(1,151)	(309,164)
Debt	(50,814)	(64,280)
Royalty obligations	0	0
Reclamation	1,151	(119)
Deferred tax liabilities	0	0
Other long-term liabilities	0	0
Intercompany Payable Receivable	0	0
Non-current liabilities	(49,663)	(64,399)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(174,528)	(2,867,494)
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014 and 102,843,003 at December 31, 2013	(128,549)	(122,916)
Additional paid-in capital	(1,762,542)	(3,337,749)
Accumulated deficit	1,713,755	588,265
Accumulated Other Comprehensive Income (Loss), Net of Tax	2,808	4,906
Stockholders' equity attributable to parent	(174,528)	(2,867,494)
Liabilities and Equity	(225,342)	(3,241,057)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt	$ 437,454	$ 300,000
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%			7.875%