Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 179,587	$ 270,861
Receivables	118,390	116,921
Ore on leach pads	66,705	48,204
Inventory	115,337	114,931
Deferred tax assets	7,255	7,364
Prepaid expenses and other	18,629	15,523
Current assets	505,903	573,804
Property, plant and equipment, net	254,892	227,911
Mining properties, net	572,842	501,192
Ore on leach pads	34,425	37,889
Restricted assets	9,039	7,037
Equity securities	4,488	5,982
Receivables	18,933	21,686
Deferred tax assets	63,735	60,151
Other Assets, Noncurrent	11,561	9,915
TOTAL ASSETS	1,475,818	1,445,567
Accounts payable	45,387	49,052
Accrued liabilities and other	40,568	51,513
Debt	65,719	17,498
Royalty obligations	44,442	43,678
Reclamation	3,888	3,871
Deferred tax liabilities	8,078	8,078
Liabilities, Current	208,082	173,690
Debt	447,779	451,048
Royalty obligations	21,219	27,651
Reclamation	85,899	66,943
Deferred tax liabilities	121,799	111,006
Other long-term liabilities	37,476	29,911
Intercompany Payable Receivable	0	0
Non-current liabilities	714,172	686,559
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 103,299,223 at March 31, 2015 and 103,384,408 at December 31, 2014	1,033	1,034
Additional paid-in capital	2,791,216	2,789,695
Accumulated deficit	(2,235,890)	(2,202,603)
Accumulated other comprehensive income (loss)	(2,795)	(2,808)
Stockholders' equity	553,564	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,475,818	1,445,567
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	113,872	210,361
Receivables	13	87
Ore on leach pads	0	0
Inventory	0	0
Deferred tax assets	393	393
Prepaid expenses and other	4,575	6,349
Current assets	118,853	217,190
Property, plant and equipment, net	5,665	6,155
Mining properties, net	12,004	12,004
Ore on leach pads	0	0
Restricted assets	2,665	897
Equity securities	0	0
Receivables	0	0
Deferred tax assets	33,883	30,419
Other Assets, Noncurrent	51,638	50,813
TOTAL ASSETS	444,413	446,391
Accounts payable	3,419	3,414
Accrued liabilities and other	10,534	22,588
Debt	49,753	5,334
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	7,142	7,142
Liabilities, Current	70,848	38,478
Debt	426,647	427,604
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	53,201	53,201
Other long-term liabilities	2,718	2,582
Intercompany Payable Receivable	(662,565)	(660,792)
Non-current liabilities	(179,999)	(177,405)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	219,705	128,913
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,299,223 at March 31, 2015 and 103,384,408 at December 31, 2014	1,033	1,034
Additional paid-in capital	2,791,216	2,789,695
Accumulated deficit	(2,235,890)	(2,202,603)
Accumulated other comprehensive income (loss)	(2,795)	(2,808)
Stockholders' equity	553,564	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	444,413	446,391
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	6,179	5,781
Receivables	11,443	11,151
Ore on leach pads	54,447	48,204
Inventory	43,371	54,983
Deferred tax assets	0	0
Prepaid expenses and other	4,444	4,557
Current assets	119,884	124,676
Property, plant and equipment, net	102,804	107,084
Mining properties, net	152,830	159,124
Ore on leach pads	34,425	37,889
Restricted assets	50	50
Equity securities	4,488	5,982
Receivables	0	0
Deferred tax assets	0	0
Other Assets, Noncurrent	5,518	5,522
TOTAL ASSETS	466,424	485,942
Accounts payable	14,526	13,391
Accrued liabilities and other	8,998	11,207
Debt	7,539	7,476
Royalty obligations	6,455	5,747
Reclamation	2,542	3,401
Deferred tax liabilities	848	848
Liabilities, Current	40,908	42,070
Debt	10,924	12,806
Royalty obligations	10,067	9,623
Reclamation	47,743	46,792
Deferred tax liabilities	2,963	2,963
Other long-term liabilities	455	469
Intercompany Payable Receivable	407,526	427,156
Non-current liabilities	479,678	499,809
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	46,425	45,615
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,299,223 at March 31, 2015 and 103,384,408 at December 31, 2014	250	250
Additional paid-in capital	79,712	79,712
Accumulated deficit	(131,329)	(133,091)
Accumulated other comprehensive income (loss)	(2,795)	(2,808)
Stockholders' equity	(54,162)	(55,937)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	466,424	485,942
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	59,536	54,719
Receivables	106,934	105,683
Ore on leach pads	12,258	0
Inventory	71,966	59,948
Deferred tax assets	6,862	6,971
Prepaid expenses and other	9,610	4,617
Current assets	267,166	231,938
Property, plant and equipment, net	146,423	114,672
Mining properties, net	408,008	330,064
Ore on leach pads	0	0
Restricted assets	6,324	6,090
Equity securities	0	0
Receivables	18,933	21,686
Deferred tax assets	29,852	29,732
Other Assets, Noncurrent	6,042	4,394
TOTAL ASSETS	882,748	738,576
Accounts payable	27,442	32,247
Accrued liabilities and other	21,036	17,718
Debt	8,427	4,688
Royalty obligations	37,987	37,931
Reclamation	2,497	1,621
Deferred tax liabilities	88	88
Liabilities, Current	97,477	94,293
Debt	61,845	61,452
Royalty obligations	11,152	18,028
Reclamation	37,005	19,000
Deferred tax liabilities	65,635	54,842
Other long-term liabilities	34,303	26,860
Intercompany Payable Receivable	255,039	233,636
Non-current liabilities	464,979	413,818
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 103,299,223 at March 31, 2015 and 103,384,408 at December 31, 2014	129,093	128,299
Additional paid-in capital	1,785,830	1,682,830
Accumulated deficit	(1,594,631)	(1,580,664)
Accumulated other comprehensive income (loss)	0	0
Stockholders' equity	320,292	230,465
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	882,748	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	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	(51,637)	(50,814)
TOTAL ASSETS	(317,767)	(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	(51,637)	(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	(50,486)	(49,663)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(266,130)	(174,528)
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,299,223 at March 31, 2015 and 103,384,408 at December 31, 2014	(129,343)	(128,549)
Additional paid-in capital	(1,865,542)	(1,762,542)
Accumulated deficit	1,725,960	1,713,755
Accumulated other comprehensive income (loss)	2,795	2,808
Stockholders' equity	(266,130)	(174,528)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	(317,767)	(225,342)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt	$ 425,935	$ 427,603
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%