Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 205,708	$ 270,861
Receivables	93,599	116,921
Ore on leach pads	68,695	48,204
Inventory, Net	98,109	114,931
Deferred tax assets	7,197	7,364
Prepaid expenses and other	18,431	15,523
Current assets	491,739	573,804
Property, plant and equipment, net	261,043	227,911
Mining properties, net	851,590	501,192
Ore on leach pads	39,685	37,889
Restricted assets	8,003	7,037
Equity securities	3,213	5,982
Receivables	27,507	21,686
Deferred tax assets	64,359	60,151
Other Assets, Noncurrent	11,534	9,915
TOTAL ASSETS	1,758,673	1,445,567
Accounts payable	49,690	49,052
Accrued liabilities and other	38,329	51,513
Debt	11,775	17,498
Royalty obligations	33,440	43,678
Reclamation	3,310	3,871
Deferred tax liabilities	8,078	8,078
Liabilities, Current	144,622	173,690
Debt	534,211	451,048
Royalty obligations	6,781	27,651
Reclamation	88,009	66,943
Deferred tax liabilities	222,809	111,006
Other long-term liabilities	47,856	29,911
Intercompany Payable Receivable	0	0
Non-current liabilities	899,666	686,559
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 136,962,174 at September 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	1,370	1,034
Additional paid-in capital	2,983,423	2,789,695
Accumulated deficit	(2,266,788)	(2,202,603)
Accumulated other comprehensive income (loss)	(3,620)	(2,808)
Stockholders' equity	714,385	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,758,673	1,445,567
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	113,704	210,361
Receivables	91	87
Ore on leach pads	0	0
Inventory, Net	0	0
Deferred tax assets	393	393
Prepaid expenses and other	2,473	6,349
Current assets	116,661	217,190
Property, plant and equipment, net	4,844	6,155
Mining properties, net	0	12,004
Ore on leach pads	0	0
Restricted assets	2,669	897
Equity securities	476	0
Receivables	0	0
Deferred tax assets	33,807	30,419
Other Assets, Noncurrent	53,600	50,813
TOTAL ASSETS	667,746	446,391
Accounts payable	1,359	3,414
Accrued liabilities and other	9,976	22,588
Debt	1,000	5,334
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	7,142	7,142
Liabilities, Current	19,477	38,478
Debt	520,801	427,604
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	53,324	53,201
Other long-term liabilities	3,247	2,582
Intercompany Payable Receivable	(643,488)	(660,792)
Non-current liabilities	(66,116)	(177,405)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	455,689	128,913
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 136,962,174 at September 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	1,370	1,034
Additional paid-in capital	2,983,423	2,789,695
Accumulated deficit	(2,266,788)	(2,202,603)
Accumulated other comprehensive income (loss)	(3,620)	(2,808)
Stockholders' equity	714,385	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	667,746	446,391
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	21,656	5,781
Receivables	11,472	11,151
Ore on leach pads	68,695	48,204
Inventory, Net	45,123	54,983
Deferred tax assets	0	0
Prepaid expenses and other	2,538	4,557
Current assets	149,484	124,676
Property, plant and equipment, net	133,967	107,084
Mining properties, net	218,676	159,124
Ore on leach pads	39,685	37,889
Restricted assets	381	50
Equity securities	2,737	5,982
Receivables	0	0
Deferred tax assets	0	0
Other Assets, Noncurrent	9,412	5,522
TOTAL ASSETS	596,448	485,942
Accounts payable	21,793	13,391
Accrued liabilities and other	15,868	11,207
Debt	8,978	7,476
Royalty obligations	4,158	5,747
Reclamation	3,957	3,401
Deferred tax liabilities	848	848
Liabilities, Current	55,602	42,070
Debt	5,712	12,806
Royalty obligations	6,781	9,623
Reclamation	64,786	46,792
Deferred tax liabilities	12,643	2,963
Other long-term liabilities	3,752	469
Intercompany Payable Receivable	397,419	427,156
Non-current liabilities	491,093	499,809
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	42,106	45,615
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 136,962,174 at September 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	250	250
Additional paid-in capital	179,553	79,712
Accumulated deficit	(127,424)	(133,091)
Accumulated other comprehensive income (loss)	(2,626)	(2,808)
Stockholders' equity	49,753	(55,937)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	596,448	485,942
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	70,348	54,719
Receivables	82,036	105,683
Ore on leach pads	0	0
Inventory, Net	52,986	59,948
Deferred tax assets	6,804	6,971
Prepaid expenses and other	13,420	4,617
Current assets	225,594	231,938
Property, plant and equipment, net	122,232	114,672
Mining properties, net	632,914	330,064
Ore on leach pads	0	0
Restricted assets	4,953	6,090
Equity securities	0	0
Receivables	27,507	21,686
Deferred tax assets	30,552	29,732
Other Assets, Noncurrent	2,124	4,394
TOTAL ASSETS	1,045,876	738,576
Accounts payable	26,538	32,247
Accrued liabilities and other	12,485	17,718
Debt	1,797	4,688
Royalty obligations	29,282	37,931
Reclamation	504	1,621
Deferred tax liabilities	88	88
Liabilities, Current	70,694	94,293
Debt	61,300	61,452
Royalty obligations	0	18,028
Reclamation	22,072	19,000
Deferred tax liabilities	156,842	54,842
Other long-term liabilities	40,857	26,860
Intercompany Payable Receivable	246,069	233,636
Non-current liabilities	527,140	413,818
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 136,962,174 at September 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	129,991	128,299
Additional paid-in capital	1,896,047	1,682,830
Accumulated deficit	(1,577,996)	(1,580,664)
Accumulated other comprehensive income (loss)	0	0
Stockholders' equity	448,042	230,465
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,045,876	738,576
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0
Receivables	0	0
Ore on leach pads	0	0
Inventory, Net	0	0
Deferred tax assets	0	0
Prepaid expenses and other	0	0
Current assets	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
Deferred tax assets	0	0
Other Assets, Noncurrent	(53,602)	(50,814)
TOTAL ASSETS	(551,397)	(225,342)
Accounts payable	0	0
Accrued liabilities and other	0	0
Debt	0	0
Royalty obligations	0	0
Reclamation	(1,151)	(1,151)
Deferred tax liabilities	0	0
Liabilities, Current	(1,151)	(1,151)
Debt	(53,602)	(50,814)
Royalty obligations	0	0
Reclamation	1,151	1,151
Deferred tax liabilities	0	0
Other long-term liabilities	0	0
Intercompany Payable Receivable	0	0
Non-current liabilities	(52,451)	(49,663)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(497,795)	(174,528)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 136,962,174 at September 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	(130,241)	(128,549)
Additional paid-in capital	(2,075,600)	(1,762,542)
Accumulated deficit	1,705,420	1,713,755
Accumulated other comprehensive income (loss)	2,626	2,808
Stockholders' equity	(497,795)	(174,528)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	(551,397)	$ (225,342)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt	$ 426,533
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%