Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Coeur Mining, Inc.	Sep. 30, 2012 Coeur Mining, Inc.	Sep. 30, 2013 Coeur Mining, Inc.	Sep. 30, 2012 Coeur Mining, Inc.	Sep. 30, 2013 Guarantor Subsidiaries	Sep. 30, 2012 Guarantor Subsidiaries	Sep. 30, 2013 Guarantor Subsidiaries	Sep. 30, 2012 Guarantor Subsidiaries	Sep. 30, 2013 Non-Guarantor Subsidiaries	Sep. 30, 2012 Non-Guarantor Subsidiaries	Sep. 30, 2013 Non-Guarantor Subsidiaries	Sep. 30, 2012 Non-Guarantor Subsidiaries	Sep. 30, 2013 Eliminations	Sep. 30, 2012 Eliminations	Sep. 30, 2013 Eliminations	Sep. 30, 2012 Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 26,804	$ 79,735	$ 103,076	$ 209,941	$ (57,902)	$ (6,929)	$ (39,646)	$ 24,589	$ (2,282)	$ 11,912	$ 18,374	$ 2,696	$ 57,186	$ 75,567	$ 128,531	$ 229,932	$ 29,802	$ (815)	$ (4,183)	$ (47,276)
Payments to Acquire Investments	(2,689)	(4,093)	(8,022)	(11,959)	(1,307)	(4,071)	(2,906)	(11,914)	(27)	(22)	(65)	(45)	(1,355)	0	(5,051)	0	0	0	0	0
Payments for (Proceeds from) Investments	27	337	6,371	21,038	0	255	2,874	20,933	27	22	65	45	0	60	3,432	60	0	0	0	0
Payments to Acquire Productive Assets	(32,726)	(29,972)	(72,754)	(93,857)	(711)	(428)	(1,268)	(987)	(17,201)	(13,811)	(37,831)	(39,598)	(14,814)	(15,733)	(33,655)	(53,272)	0	0	0	0
Payments to Acquire Businesses, Net of Cash Acquired	0	0	(113,214)	0			(113,214)				0				0				0
Proceeds from Discontinued Operations Sale of Assets and Other	(48)	479	1,163	1,659	(13)	524	(19)	2,191		0	443	1	(35)	(45)	739	(533)	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0	29,802	(815)	(7,671)	(47,276)	0	0	0	0	0	0	3,488	0	(29,802)	815	4,183	47,276
Net Cash Provided by (Used in) Investing Activities	(35,436)	(33,249)	(186,456)	(83,119)	27,771	(4,535)	(122,204)	(37,053)	(17,201)	(13,811)	(37,388)	(39,597)	(16,204)	(15,718)	(31,047)	(53,745)	(29,802)	815	4,183	47,276
Proceeds from Convertible Debt	0	0	300,000	0			300,000				0				0				0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,824)	(80,318)	(59,021)	(94,562)	0	(3,721)	(52,565)	(4,004)	(665)	(73,082)	(2,621)	(79,151)	(1,159)	(3,515)	(3,835)	(11,407)	0	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	(12,619)	(17,458)	(43,548)	(58,119)	0	0	0	0	0	0	0	0	(12,619)	(17,458)	(43,548)	(58,119)	0	0	0	0
Additions to Restricted Assets	0	(4,645)	0	(4,645)		0		0		4,645		4,645		0		0		0		0
Payments for Repurchase of Common Stock	(14,995)	(9,971)	(27,552)	(9,971)	(14,995)	(9,971)	(27,552)	(9,971)	0	0	0	0	0	0	0	0	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	0	0	0	0	(9,917)	(18,609)	(12,505)	22,954	19,824	70,142	21,634	111,317	(9,907)	(51,533)	(9,129)	(134,271)	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	(27)	134	(505)	(912)	(27)	134	(505)	(912)	0	0	0	0	0	0	0	0	0	0	0	0
Net Cash Provided by (Used in) Financing Activities	(29,465)	(102,968)	169,374	(158,919)	(24,939)	(32,167)	206,873	8,067	19,159	1,705	19,013	36,811	(23,685)	(72,506)	(56,512)	(203,797)	0	0	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	(38,097)	(56,482)	85,994	(32,097)	(55,070)	(43,631)	45,023	(4,397)	(324)	(194)	(1)	(90)	17,297	(12,657)	40,972	(27,610)	0	0	0	0
Cash and Cash Equivalents, at Carrying Value	$ 211,434	$ 142,915	$ 211,434	$ 142,915	$ 131,811	$ 81,275	$ 131,811	$ 81,275	$ 399	$ 343	$ 399	$ 343	$ 79,224	$ 61,297	$ 79,224	$ 61,297	$ 0	$ 0	$ 0	$ 0