Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - Fair Value, Measurements, Fair Value Hierarchy [Domain] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 205,868	$ 270,861
Receivables	112,159	116,921
Ore on leach pads	67,458	48,204
Inventory	109,207	114,931
Deferred tax assets	7,262	7,364
Prepaid expenses and other	17,442	15,523
Current assets	519,396	573,804
Property, plant and equipment, net	254,574	227,911
Mining properties, net	864,884	501,192
Ore on leach pads	32,663	37,889
Restricted assets	8,377	7,037
Equity securities	4,216	5,982
Receivables	26,738	21,686
Deferred tax assets	64,120	60,151
Other Assets, Noncurrent	11,681	9,915
TOTAL ASSETS	1,786,649	1,445,567
Accounts payable	42,522	49,052
Accrued liabilities and other	47,590	51,513
Debt	9,121	17,498
Royalty obligations	41,999	43,678
Reclamation	3,786	3,871
Deferred tax liabilities	8,078	8,078
Liabilities, Current	153,096	173,690
Debt	538,589	451,048
Royalty obligations	12,675	27,651
Reclamation	87,538	66,943
Deferred tax liabilities	223,868	111,006
Other long-term liabilities	43,233	29,911
Intercompany Payable Receivable	0	0
Non-current liabilities	905,903	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 137,122,762 at June 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	1,371	1,034
Additional paid-in capital	2,982,019	2,789,695
Accumulated deficit	(2,252,568)	(2,202,603)
Accumulated other comprehensive income (loss)	(3,172)	(2,808)
Stockholders' equity	727,650	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,786,649	1,445,567
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	124,695	210,361
Receivables	74	87
Ore on leach pads	0	0
Inventory	0	0
Deferred tax assets	394	393
Prepaid expenses and other	3,180	6,349
Current assets	128,343	217,190
Property, plant and equipment, net	5,244	6,155
Mining properties, net	0	12,004
Ore on leach pads	0	0
Restricted assets	2,669	897
Equity securities	639	0
Receivables	0	0
Deferred tax assets	33,807	30,419
Other Assets, Noncurrent	52,579	50,813
TOTAL ASSETS	680,335	446,391
Accounts payable	2,181	3,414
Accrued liabilities and other	18,394	22,588
Debt	1,000	5,334
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	7,142	7,142
Liabilities, Current	28,717	38,478
Debt	520,619	427,604
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	53,201	53,201
Other long-term liabilities	2,970	2,582
Intercompany Payable Receivable	(652,822)	(660,792)
Non-current liabilities	(76,032)	(177,405)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	457,054	128,913
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 137,122,762 at June 30, 2015 and authorized 150,000,000 shares, issued and outstanding 103,384,408 at December 31, 2014	1,371	1,034
Additional paid-in capital	2,982,019	2,789,695
Accumulated deficit	(2,252,568)	(2,202,603)
Accumulated other comprehensive income (loss)	(3,172)	(2,808)
Stockholders' equity	727,650	585,318
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	680,335	446,391
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	27,259	5,781
Receivables	15,447	11,151
Ore on leach pads	67,458	48,204
Inventory	50,056	54,983
Deferred tax assets	0	0
Prepaid expenses and other	5,907	4,557
Current assets	166,127	124,676
Property, plant and equipment, net	131,572	107,084
Mining properties, net	226,867	159,124
Ore on leach pads	32,663	37,889
Restricted assets	381	50
Equity securities	3,577	5,982
Receivables	0	0
Deferred tax assets	0	0
Other Assets, Noncurrent	9,415	5,522
TOTAL ASSETS	616,377	485,942
Accounts payable	15,606	13,391
Accrued liabilities and other	13,204	11,207
Debt	7,562	7,476
Royalty obligations	4,726	5,747
Reclamation	4,637	3,401
Deferred tax liabilities	848	848
Liabilities, Current	46,583	42,070
Debt	9,017	12,806
Royalty obligations	9,179	9,623
Reclamation	64,974	46,792
Deferred tax liabilities	12,643	2,963
Other long-term liabilities	4,212	469
Intercompany Payable Receivable	418,359	427,156
Non-current liabilities	518,384	499,809
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	45,775	45,615
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 137,122,762 at June 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	(126,053)	(133,091)
Accumulated other comprehensive income (loss)	(2,340)	(2,808)
Stockholders' equity	51,410	(55,937)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	616,377	485,942
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	53,914	54,719
Receivables	96,638	105,683
Ore on leach pads	0	0
Inventory	59,151	59,948
Deferred tax assets	6,868	6,971
Prepaid expenses and other	8,355	4,617
Current assets	224,926	231,938
Property, plant and equipment, net	117,758	114,672
Mining properties, net	638,017	330,064
Ore on leach pads	0	0
Restricted assets	5,327	6,090
Equity securities	0	0
Receivables	26,738	21,686
Deferred tax assets	30,313	29,732
Other Assets, Noncurrent	2,266	4,394
TOTAL ASSETS	1,045,345	738,576
Accounts payable	24,735	32,247
Accrued liabilities and other	15,992	17,718
Debt	559	4,688
Royalty obligations	37,273	37,931
Reclamation	300	1,621
Deferred tax liabilities	88	88
Liabilities, Current	78,947	94,293
Debt	61,532	61,452
Royalty obligations	3,496	18,028
Reclamation	21,413	19,000
Deferred tax liabilities	158,024	54,842
Other long-term liabilities	36,051	26,860
Intercompany Payable Receivable	234,463	233,636
Non-current liabilities	514,979	413,818
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 137,122,762 at June 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	1,895,924	1,682,830
Accumulated deficit	(1,574,496)	(1,580,664)
Accumulated other comprehensive income (loss)	0	0
Stockholders' equity	451,419	230,465
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,045,345	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	(52,579)	(50,814)
TOTAL ASSETS	(555,408)	(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	(52,579)	(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	(51,428)	(49,663)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(502,829)	(174,528)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 137,122,762 at June 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	(2,075,477)	(1,762,542)
Accumulated deficit	1,700,549	1,713,755
Accumulated other comprehensive income (loss)	2,340	2,808
Stockholders' equity	(502,829)	(174,528)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	(555,408)	(225,342)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt	$ 426,234	$ 427,603
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%