Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ (2,250)
Payments to Acquire Mineral Rights	(2,250)	(101,648)	(2,250)	(113,214)
Net Cash Provided by (Used in) Operating Activities	30,490	63,338	20,864	76,272
Capital expenditures	(15,356)	(27,201)	(27,292)	(40,028)
Payments to Acquire Investments	(2,139)	(683)	(48,360)	(5,332)
Payments for (Proceeds from) Investments	800	1,522	890	6,344
Proceeds from Discontinued Operations Sale of Assets and Other	12	254	(13)	1,209
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
Net Cash Provided by (Used in) Investing Activities	(18,933)	(127,756)	(77,025)	(151,021)
Issuance of notes and bank borrowings	0	0	153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(2,851)	(1,857)	(6,962)	(57,197)
Payments to Acquire Royalty Interests in Mining Properties	(12,345)	(15,480)	(27,028)	(30,929)
Payments for Repurchase of Common Stock	0	0	0	(12,557)
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	(160)	(25)	(406)	(477)
CASH USED IN FINANCING ACTIVITIES:	(15,356)	(17,362)	118,604	198,840
Cash and Cash Equivalents, Period Increase (Decrease)	(3,799)	(81,780)	62,443	124,091
Cash and Cash Equivalents, at Carrying Value	269,133	249,531	269,133	249,531
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	(101,648)	0	(113,214)
Net Cash Provided by (Used in) Operating Activities	(35,100)	(4,114)	(72,723)	18,860
Capital expenditures	(106)	(129)	(1,051)	(557)
Payments to Acquire Investments	(2,106)	0	(47,903)	(1,598)
Payments for (Proceeds from) Investments	217	1,498	307	2,873
Proceeds from Discontinued Operations Sale of Assets and Other	0	(18)	0	(6)
Payments to Acquire Interest in Subsidiaries and Affiliates	65,832	(5,602)	78,993	(36,355)
Net Cash Provided by (Used in) Investing Activities	63,837	(105,899)	30,346	(148,857)
Issuance of notes and bank borrowings			153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(403)	0	(3,599)	(52,565)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock				(12,557)
Proceeds From Repayment Intercompany Borrowings	(20,555)	(11,666)	(32,030)	(4,311)
Proceeds from (Payments for) Other Financing Activities	(160)	(25)	(406)	(477)
CASH USED IN FINANCING ACTIVITIES:	(21,118)	(11,691)	116,965	230,090
Cash and Cash Equivalents, Period Increase (Decrease)	7,619	(121,704)	74,588	100,093
Cash and Cash Equivalents, at Carrying Value	211,664	186,881	211,664	186,881
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(2,250)	0	(2,250)	0
Net Cash Provided by (Used in) Operating Activities	4,210	3,768	9,142	20,659
Capital expenditures	(7,945)	(14,003)	(13,615)	(20,629)
Payments to Acquire Investments	(33)	(23)	(457)	(39)
Payments for (Proceeds from) Investments	583	24	583	38
Proceeds from Discontinued Operations Sale of Assets and Other	4	205	4	443
Payments to Acquire Interest in Subsidiaries and Affiliates	(121)		(299)	0
Net Cash Provided by (Used in) Investing Activities	(9,762)	(13,797)	(16,034)	(20,187)
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(2,131)	(715)	(2,543)	(1,955)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock				0
Proceeds From Repayment Intercompany Borrowings	7,828	11,183	9,343	1,806
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	5,697	10,468	6,800	(149)
Cash and Cash Equivalents, Period Increase (Decrease)	145	439	(92)	323
Cash and Cash Equivalents, at Carrying Value	899	723	899	723
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	39,169	65,798	49,251	69,621
Capital expenditures	(7,305)	(13,069)	(12,626)	(18,842)
Payments to Acquire Investments	0	(660)	0	(3,695)
Payments for (Proceeds from) Investments	0	0	0	3,433
Proceeds from Discontinued Operations Sale of Assets and Other	8	67	(17)	772
Payments to Acquire Interest in Subsidiaries and Affiliates	0	3,488	0	3,487
Net Cash Provided by (Used in) Investing Activities	(7,297)	(10,174)	(12,643)	(14,845)
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(317)	(1,142)	(820)	(2,677)
Payments to Acquire Royalty Interests in Mining Properties	(12,345)	(15,480)	(27,028)	(30,929)
Payments for Repurchase of Common Stock				0
Proceeds From Repayment Intercompany Borrowings	(30,773)	483	(20,813)	2,505
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	(43,435)	(16,139)	(48,661)	(31,101)
Cash and Cash Equivalents, Period Increase (Decrease)	(11,563)	39,485	(12,053)	23,675
Cash and Cash Equivalents, at Carrying Value	56,570	61,927	56,570	61,927
Eliminations
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	22,211	(2,114)	35,194	(32,868)
Capital expenditures	0	0	0	0
Payments to Acquire Investments	0	0	0	0
Payments for (Proceeds from) Investments	0	0	0	0
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	(65,711)	2,114	(78,694)	32,868
Net Cash Provided by (Used in) Investing Activities	(65,711)	2,114	(78,694)	32,868
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock				0
Proceeds From Repayment Intercompany Borrowings	43,500	0	43,500	0
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	43,500	0	43,500	0
Cash and Cash Equivalents, Period Increase (Decrease)	0	0	0	0
Cash and Cash Equivalents, at Carrying Value	$ 0	$ 0	$ 0	$ 0