Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	$ (122)	$ (13,829)	$ (111,290)	$ (16,079)
Net Cash Provided by (Used in) Operating Activities	36,237	31,266	69,128	52,437
Capital expenditures	(23,861)	(16,784)	(65,158)	(44,076)
Purchase of short term investments and equity securities	(3)	(2,089)	(1,876)	(50,423)
Sales and maturities of short-term investments	60	2,856	529	3,413
Proceeds from Discontinued Operations Sale of Assets and Other	340	74	(1,338)	61
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
Net Cash Provided by (Used in) Investing Activities	(23,586)	(29,772)	(179,133)	(107,104)
Issuance of notes and bank borrowings			153,500	153,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(2,618)	(13,274)	(77,838)	(20,236)
Cash payments on gold production royalty	(10,159)	(11,351)	(30,281)	(38,379)
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	(34)	(77)	(529)	(483)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(12,811)	(24,702)	44,852	93,902
Cash and Cash Equivalents, Period Increase (Decrease)	(160)	(23,208)	(65,153)	39,235
Cash and cash equivalents at beginning of period	205,868	269,133	270,861	206,690
Cash and cash equivalents at end of period	205,708	245,925	205,708	245,925
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	(122)	(12,005)	(111,290)	(12,004)
Net Cash Provided by (Used in) Operating Activities	(20,565)	(7,802)	(73,276)	(80,218)
Capital expenditures	(94)	(278)	(181)	(1,329)
Purchase of short term investments and equity securities	(3)	(2,089)	(1,876)	(49,994)
Sales and maturities of short-term investments	0	0	12	0
Proceeds from Discontinued Operations Sale of Assets and Other	(1)	0	(1,767)	0
Payments to Acquire Interest in Subsidiaries and Affiliates	1,206	(11,641)	(14,477)	67,353
Net Cash Provided by (Used in) Investing Activities	986	(26,013)	(129,579)	4,026
Issuance of notes and bank borrowings			150,000	153,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(711)	(12,398)	(62,579)	(15,997)
Cash payments on gold production royalty	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	9,333	12,012	19,306	(20,018)
Proceeds from (Payments for) Other Financing Activities	(34)	(77)	(529)	(483)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	8,588	(463)	106,198	116,502
Cash and Cash Equivalents, Period Increase (Decrease)	(10,991)	(34,278)	(96,657)	40,310
Cash and cash equivalents at beginning of period	124,695	211,664	210,361	137,076
Cash and cash equivalents at end of period	113,704	177,386	113,704	177,386
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	0	(1,824)	0	(4,075)
Net Cash Provided by (Used in) Operating Activities	28,924	26,470	80,313	35,612
Capital expenditures	(11,468)	(7,805)	(30,791)	(21,420)
Purchase of short term investments and equity securities	0	0	0	(429)
Sales and maturities of short-term investments	60	2,842	446	3,399
Proceeds from Discontinued Operations Sale of Assets and Other	44	0	212	4
Payments to Acquire Interest in Subsidiaries and Affiliates	3,666	(180)	4,490	(480)
Net Cash Provided by (Used in) Investing Activities	(7,698)	(6,967)	(25,643)	(23,001)
Issuance of notes and bank borrowings			0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,889)	(666)	(5,592)	(3,209)
Cash payments on gold production royalty	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	(24,940)	(14,657)	(33,203)	(5,314)
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(26,829)	(15,323)	(38,795)	(8,523)
Cash and Cash Equivalents, Period Increase (Decrease)	(5,603)	4,180	15,875	4,088
Cash and cash equivalents at beginning of period	27,259	899	5,781	991
Cash and cash equivalents at end of period	21,656	5,079	21,656	5,079
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	31,005	30,419	49,905	79,670
Capital expenditures	(12,299)	(8,701)	(34,186)	(21,327)
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term investments	0	14	71	14
Proceeds from Discontinued Operations Sale of Assets and Other	297	74	217	57
Payments to Acquire Interest in Subsidiaries and Affiliates	1	0	117	0
Net Cash Provided by (Used in) Investing Activities	(12,001)	(8,613)	(33,781)	(21,256)
Issuance of notes and bank borrowings			3,500	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(18)	(210)	(9,667)	(1,030)
Cash payments on gold production royalty	(10,159)	(11,351)	(30,281)	(38,379)
Proceeds From Repayment Intercompany Borrowings	7,607	(3,355)	35,953	(24,168)
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(2,570)	(14,916)	(495)	(63,577)
Cash and Cash Equivalents, Period Increase (Decrease)	16,434	6,890	15,629	(5,163)
Cash and cash equivalents at beginning of period	53,914	56,570	54,719	68,623
Cash and cash equivalents at end of period	70,348	63,460	70,348	63,460
Eliminations
Condensed Financial Statements, Captions [Line Items]
Acquisitions, net of cash acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	(3,127)	(17,821)	12,186	17,373
Capital expenditures	0	0	0	0
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term 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	(4,873)	11,821	9,870	(66,873)
Net Cash Provided by (Used in) Investing Activities	(4,873)	11,821	9,870	(66,873)
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
Cash payments on gold production royalty	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	8,000	6,000	(22,056)	49,500
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	8,000	6,000	(22,056)	49,500
Cash and Cash Equivalents, Period Increase (Decrease)	0	0	0	0
Cash and cash equivalents at beginning of period	0	0	0	0
Cash and cash equivalents at end of period	$ 0	$ 0	$ 0	$ 0