Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired			$ (29,297)
Net Cash Provided by (Used in) Operating Activities	52,927	113,467	271,634
Capital expenditures	(64,244)	(100,813)	(115,641)
Purchase of short term investments and marketable securities	(50,513)us-gaap_PaymentsToAcquireInvestments	(8,052)us-gaap_PaymentsToAcquireInvestments	(12,959)us-gaap_PaymentsToAcquireInvestments
Sales and maturities of short term investments	54,344	34,796	21,695
Proceeds from Discontinued Operations Sale of Assets and Other	8	4,478	3,087
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0
Net Cash Provided by (Used in) Investing Activities	(81,734)	(186,489)	(133,115)
Proceeds from Issuance of Unsecured Debt	167,784	300,000	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(25,902)	(60,628)	(97,170)
Payments to Acquire Royalty Interests in Mining Properties	(48,395)	(57,034)	(74,734)
Share repurchases	0	(27,552)	(19,971)
Proceeds From Repayment Intercompany Borrowings	0	0	0
Proceeds from (Payments for) Other Financing Activities	(509)	(514)	3,784
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	(92,978)	(154,272)	188,091
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	64,171	81,250	(49,572)
Cash and cash equivalents at beginning of period	206,690	125,440	175,012
Cash and cash equivalents at end of period	270,861	206,690	125,440
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(12,079)	(113,214)	29,338
Net Cash Provided by (Used in) Operating Activities	(1,144,474)	(701,653)	58,754
Capital expenditures	(1,849)	(3,573)	1,531
Purchase of short term investments and marketable securities	(50,013)	(2,921)	12,913
Sales and maturities of short term investments	49,069	29,274	(21,590)
Proceeds from Discontinued Operations Sale of Assets and Other	0	3,266	(3,538)
Payments to Acquire Interest in Subsidiaries and Affiliates	1,120,382	642,617	81,229
Net Cash Provided by (Used in) Investing Activities	1,105,510	555,449	(99,883)
Proceeds from Issuance of Unsecured Debt	153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(18,545)	(52,568)	(4,005)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0
Share repurchases		(27,552)	(19,971)
Proceeds From Repayment Intercompany Borrowings	(21,697)	(22,874)	67,082
Proceeds from (Payments for) Other Financing Activities	(509)	(514)	(861)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	(112,249)	(196,492)	(42,245)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	73,285	50,288	1,116
Cash and cash equivalents at beginning of period	137,076	86,788	85,672
Cash and cash equivalents at end of period	210,361	137,076	86,788
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(4,000)	(3,684)	0
Net Cash Provided by (Used in) Operating Activities	41,292	17,456	37,426
Capital expenditures	(28,118)	(50,810)	48,788
Purchase of short term investments and marketable securities	(429)	(66)	46
Sales and maturities of short term investments	5,261	75	(45)
Proceeds from Discontinued Operations Sale of Assets and Other	48	444	(130)
Payments to Acquire Interest in Subsidiaries and Affiliates	4,106	68	0
Net Cash Provided by (Used in) Investing Activities	(23,132)	(53,973)	(48,659)
Proceeds from Issuance of Unsecured Debt	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(6,114)	(3,171)	(79,839)
Payments to Acquire Royalty Interests in Mining Properties	0	0	0
Share repurchases		0	0
Proceeds From Repayment Intercompany Borrowings	(7,256)	40,279	86,394
Proceeds from (Payments for) Other Financing Activities	0	0	4,645
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	13,370	(37,108)	(11,200)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	4,790	591	(33)
Cash and cash equivalents at beginning of period	991	400	433
Cash and cash equivalents at end of period	5,781	991	400
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	(5,250)	0	(41)
Net Cash Provided by (Used in) Operating Activities	80,627	151,491	256,683
Capital expenditures	(34,277)	(46,430)	65,322
Purchase of short term investments and marketable securities	(71)	(5,065)	0
Sales and maturities of short term investments	14	5,447	(60)
Proceeds from Discontinued Operations Sale of Assets and Other	(40)	768	581
Payments to Acquire Interest in Subsidiaries and Affiliates	0	3,488	0
Net Cash Provided by (Used in) Investing Activities	(39,624)	(41,792)	(65,802)
Proceeds from Issuance of Unsecured Debt	14,784	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,243)	(4,889)	(13,326)
Payments to Acquire Royalty Interests in Mining Properties	(48,395)	(57,034)	(74,734)
Share repurchases		0	0
Proceeds From Repayment Intercompany Borrowings	(20,053)	(17,405)	(153,476)
Proceeds from (Payments for) Other Financing Activities	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	54,907	79,328	241,536
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(13,904)	30,371	(50,655)
Cash and cash equivalents at beginning of period	68,623	38,252	88,907
Cash and cash equivalents at end of period	54,719	68,623	38,252
Eliminations
Condensed Financial Statements, Captions [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0
Net Cash Provided by (Used in) Operating Activities	1,075,482	646,173	(81,229)
Capital expenditures	0	0	0
Purchase of short term investments and marketable securities	0	0	0
Sales and maturities of short term investments	0	0	0
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	(1,124,488)	(646,173)	81,229
Net Cash Provided by (Used in) Investing Activities	(1,124,488)	(646,173)	81,229
Proceeds from Issuance of Unsecured Debt	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	0	0	0
Share repurchases		0	0
Proceeds From Repayment Intercompany Borrowings	49,006	0	0
Proceeds from (Payments for) Other Financing Activities	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	(49,006)	0	0
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	$ 0	$ 0	$ 0

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