Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ (13,829)
Payments to Acquire Mineral Rights	(13,829)	0	(16,079)	(113,214)
Net Cash Provided by (Used in) Operating Activities	31,266	26,804	52,437	103,076
Capital expenditures	(16,784)	(32,726)	(44,076)	(72,754)
Payments to Acquire Investments	(2,089)	(2,689)	(50,423)	(8,022)
Payments for (Proceeds from) Investments	2,856	27	3,413	6,371
Proceeds from Discontinued Operations Sale of Assets and Other	74	(48)	61	1,163
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
Net Cash Provided by (Used in) Investing Activities	(29,772)	(35,436)	(107,104)	(186,456)
Issuance of notes and bank borrowings			153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(13,274)	(1,824)	(20,236)	(59,021)
Payments to Acquire Royalty Interests in Mining Properties	(11,351)	(12,619)	(38,379)	(43,548)
Payments for Repurchase of Common Stock	0	(14,995)	0	(27,552)
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	(77)	(27)	(483)	(505)
CASH USED IN FINANCING ACTIVITIES:	(24,702)	(29,465)	93,902	169,374
Cash and Cash Equivalents, Period Increase (Decrease)	(23,208)	(38,097)	39,235	85,994
Cash and Cash Equivalents, at Carrying Value	245,925	211,434	245,925	211,434
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(12,005)	0	(12,004)	(113,214)
Net Cash Provided by (Used in) Operating Activities	(7,802)	(57,902)	(80,218)	(39,646)
Capital expenditures	(278)	(711)	(1,329)	(1,268)
Payments to Acquire Investments	(2,089)	(1,307)	(49,994)	(2,906)
Payments for (Proceeds from) Investments	0	0	0	2,874
Proceeds from Discontinued Operations Sale of Assets and Other	0	(13)	0	(19)
Payments to Acquire Interest in Subsidiaries and Affiliates	(11,641)	29,802	67,353	(7,671)
Net Cash Provided by (Used in) Investing Activities	(26,013)	27,771	4,026	(122,204)
Issuance of notes and bank borrowings			153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(12,398)	0	(15,997)	(52,565)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock		(14,995)		(27,552)
Proceeds From Repayment Intercompany Borrowings	12,012	(9,917)	(20,018)	(12,505)
Proceeds from (Payments for) Other Financing Activities	(77)	(27)	(483)	(505)
CASH USED IN FINANCING ACTIVITIES:	(463)	(24,939)	116,502	206,873
Cash and Cash Equivalents, Period Increase (Decrease)	(34,278)	(55,070)	40,310	45,023
Cash and Cash Equivalents, at Carrying Value	177,386	131,811	177,386	131,811
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(1,824)	0	(4,075)	0
Net Cash Provided by (Used in) Operating Activities	26,470	(2,282)	35,612	18,374
Capital expenditures	(7,805)	(17,201)	(21,420)	(37,831)
Payments to Acquire Investments	0	(27)	(429)	(65)
Payments for (Proceeds from) Investments	2,842	27	3,399	65
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	4	443
Payments to Acquire Interest in Subsidiaries and Affiliates	(180)		(480)	0
Net Cash Provided by (Used in) Investing Activities	(6,967)	(17,201)	(23,001)	(37,388)
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(666)	(665)	(3,209)	(2,621)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock				0
Proceeds From Repayment Intercompany Borrowings	(14,657)	19,824	(5,314)	21,634
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	(15,323)	19,159	(8,523)	19,013
Cash and Cash Equivalents, Period Increase (Decrease)	4,180	(324)	4,088	(1)
Cash and Cash Equivalents, at Carrying Value	5,079	399	5,079	399
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	30,419	57,186	79,670	128,531
Capital expenditures	(8,701)	(14,814)	(21,327)	(33,655)
Payments to Acquire Investments	0	(1,355)	0	(5,051)
Payments for (Proceeds from) Investments	14	0	14	3,432
Proceeds from Discontinued Operations Sale of Assets and Other	74	(35)	57	739
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	3,488
Net Cash Provided by (Used in) Investing Activities	(8,613)	(16,204)	(21,256)	(31,047)
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(210)	(1,159)	(1,030)	(3,835)
Payments to Acquire Royalty Interests in Mining Properties	(11,351)	(12,619)	(38,379)	(43,548)
Payments for Repurchase of Common Stock				0
Proceeds From Repayment Intercompany Borrowings	(3,355)	(9,907)	(24,168)	(9,129)
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	(14,916)	(23,685)	(63,577)	(56,512)
Cash and Cash Equivalents, Period Increase (Decrease)	6,890	17,297	(5,163)	40,972
Cash and Cash Equivalents, at Carrying Value	63,460	79,224	63,460	79,224
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	(17,821)	29,802	17,373	(4,183)
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	11,821	(29,802)	(66,873)	4,183
Net Cash Provided by (Used in) Investing Activities	11,821	(29,802)	(66,873)	4,183
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		0
Proceeds From Repayment Intercompany Borrowings	6,000	0	49,500	0
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	6,000	0	49,500	0
Cash and Cash Equivalents, Period Increase (Decrease)	0	0	0	0
Cash and Cash Equivalents, at Carrying Value	$ 0	$ 0	$ 0	$ 0