Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Jan. 29, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 245,925	$ 206,690
Investments	49,520	0
Receivables	67,599	81,074
Ore on leach pads	50,335	50,495
Inventory	127,985	132,023
Deferred tax assets	35,021	35,008
Prepaid expenses and other	19,974	25,940
Assets, Current	596,359	531,230
Property, plant and equipment, net	474,250	486,273
Mining properties, net	1,729,928	1,751,501
Ore on leach pads	41,547	31,528
Restricted assets	6,853	7,014
Marketable securities	9,162	14,521
Receivables	36,166	36,574
Unamortized Debt Issuance Expense	10,315	10,812
Deferred tax assets	705	1,189
Other Assets, Noncurrent	10,039	15,336
TOTAL ASSETS	2,915,324	2,885,978
Accounts payable	49,232	53,847
Accrued liabilities and other	37,882	38,266
Debt	11,733	2,505
Royalty obligations	45,347	48,019
Reclamation	767	913
Deferred tax liabilities	1,858	1,011
Liabilities, Current	146,819	144,561
Debt	457,744	306,130
Royalty obligations	41,319	65,142
Reclamation	60,946	57,515
Deferred tax liabilities	516,715	556,246
Other long-term liabilities	29,541	25,817
Intercompany Payable Receivable	0	0
Non-current liabilities	1,106,265	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 103,438,765 at September 30, 2014 and 102,843,003 at December 31, 2013	1,034	1,028
Additional paid-in capital	2,788,098	2,781,164
Accumulated deficit	(1,123,565)	(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,327)	(4,906)
Stockholders' Equity Attributable to Parent	1,662,240	1,730,567
Liabilities and Equity	2,915,324	2,885,978
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	177,386	137,076
Investments	49,520	0
Receivables	79	530
Ore on leach pads	0	0
Inventory	0	0
Deferred tax assets	0	0
Prepaid expenses and other	8,072	4,128
Assets, Current	235,057	141,734
Property, plant and equipment, net	6,034	5,980
Mining properties, net	12,004	0
Ore on leach pads	0	0
Restricted assets	830	830
Marketable securities	0	0
Receivables	0	0
Unamortized Debt Issuance Expense	10,315	10,812
Deferred tax assets	955	955
Other Assets, Noncurrent	55,949	53,858
TOTAL ASSETS	1,497,878	1,456,649
Accounts payable	1,187	1,963
Accrued liabilities and other	12,768	16,693
Debt	5,334	0
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	0	0
Liabilities, Current	19,289	18,656
Debt	440,075	305,335
Royalty obligations	0	0
Reclamation	0	0
Deferred tax liabilities	30,846	37,095
Other long-term liabilities	3,192	2,467
Intercompany Payable Receivable	(657,764)	(637,471)
Non-current liabilities	(183,651)	(292,574)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,176,734	1,242,480
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,438,765 at September 30, 2014 and 102,843,003 at December 31, 2013	1,034	1,028
Additional paid-in capital	2,788,098	2,781,164
Accumulated deficit	(1,123,565)	(1,046,719)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,327)	(4,906)
Stockholders' Equity Attributable to Parent	1,662,240	1,730,567
Liabilities and Equity	1,497,878	1,456,649
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	5,079	991
Investments		0
Receivables	10,274	19,982
Ore on leach pads	50,335	50,495
Inventory	44,000	35,290
Deferred tax assets	0	0
Prepaid expenses and other	5,412	5,282
Assets, Current	115,100	112,040
Property, plant and equipment, net	151,114	143,118
Mining properties, net	231,970	235,537
Ore on leach pads	41,547	31,528
Restricted assets	50	50
Marketable securities	9,162	14,521
Receivables	0	0
Unamortized Debt Issuance Expense	0	0
Deferred tax assets		0
Other Assets, Noncurrent	9,105	14,616
TOTAL ASSETS	604,743	597,625
Accounts payable	14,441	15,864
Accrued liabilities and other	12,716	8,016
Debt	5,997	1,262
Royalty obligations	5,290	3,934
Reclamation	0	0
Deferred tax liabilities	847	0
Liabilities, Current	39,291	29,076
Debt	17,317	255
Royalty obligations	12,978	17,696
Reclamation	48,328	45,894
Deferred tax liabilities	1,618	1,618
Other long-term liabilities	474	544
Intercompany Payable Receivable	422,373	427,085
Non-current liabilities	503,088	493,092
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	46,695	46,215
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,438,765 at September 30, 2014 and 102,843,003 at December 31, 2013	250	250
Additional paid-in capital	79,712	79,712
Accumulated deficit	(14,308)	401
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,290)	(4,906)
Stockholders' Equity Attributable to Parent	62,364	75,457
Liabilities and Equity	604,743	597,625
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	63,460	68,623
Investments		0
Receivables	57,246	60,562
Ore on leach pads	0	0
Inventory	83,985	96,733
Deferred tax assets	35,021	35,008
Prepaid expenses and other	6,490	16,530
Assets, Current	246,202	277,456
Property, plant and equipment, net	317,102	337,175
Mining properties, net	1,485,954	1,515,964
Ore on leach pads	0	0
Restricted assets	5,973	6,134
Marketable securities	0	0
Receivables	36,166	36,574
Unamortized Debt Issuance Expense	0	0
Deferred tax assets	(250)	234
Other Assets, Noncurrent	320,439	320,425
TOTAL ASSETS	3,990,385	4,072,761
Accounts payable	33,604	36,020
Accrued liabilities and other	13,495	14,611
Debt	308,634	309,472
Royalty obligations	40,057	44,085
Reclamation	648	794
Deferred tax liabilities	1,011	1,011
Liabilities, Current	397,449	405,993
Debt	66,477	64,820
Royalty obligations	28,341	47,446
Reclamation	12,737	11,740
Deferred tax liabilities	484,251	517,533
Other long-term liabilities	25,875	22,806
Intercompany Payable Receivable	235,391	210,386
Non-current liabilities	853,072	874,731
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,578,799	1,578,799
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,438,765 at September 30, 2014 and 102,843,003 at December 31, 2013	123,167	122,666
Additional paid-in capital	3,258,037	3,258,037
Accumulated deficit	(641,340)	(588,666)
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	0
Stockholders' Equity Attributable to Parent	2,739,864	2,792,037
Liabilities and Equity	3,990,385	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	(375,454)	(373,563)
TOTAL ASSETS	(3,177,682)	(3,241,057)
Accounts payable	0	0
Accrued liabilities and other	(1,097)	(1,054)
Debt	(308,232)	(308,229)
Royalty obligations	0	0
Reclamation	119	119
Deferred tax liabilities	0	0
Liabilities, Current	(309,210)	(309,164)
Debt	(66,125)	(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
Non-current liabilities	(66,244)	(64,399)
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(2,802,228)	(2,867,494)
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,438,765 at September 30, 2014 and 102,843,003 at December 31, 2013	(123,417)	(122,916)
Additional paid-in capital	(3,337,749)	(3,337,749)
Accumulated deficit	655,648	588,265
Accumulated Other Comprehensive Income (Loss), Net of Tax	3,290	4,906
Stockholders' Equity Attributable to Parent	(2,802,228)	(2,867,494)
Liabilities and Equity	(3,177,682)	(3,241,057)
Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]
Debt	$ 440,075	$ 300,000
Debt Instrument, Interest Rate, Stated Percentage	7.875%	7.875%	7.875%