Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 45,939	$ 37,004	$ 52,556	$ 33,555
Capital expenditures	(23,288)	(23,677)	(45,460)	(41,297)
Proceeds from Sale of Property, Plant, and Equipment	7,293	8	11,302	165
Purchase of short term investments and equity securities	(92)	(1,597)	(99)	(1,873)
Sales and maturities of short-term investments	648	399	1,645	469
Acquisitions, net of cash acquired	0	(9,152)	0	(111,170)
Proceeds from Discontinued Operations Sale of Assets and Other	(1,446)	(111)	(2,919)	(1,841)
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
CASH USED IN INVESTING ACTIVITIES	(16,885)	(34,130)	(35,531)	(155,547)
Proceeds from Issuance of Unsecured Debt	0	100,000	0	153,500
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(6,712)	(66,626)	(12,683)	(75,220)
Cash payments on gold production royalty	(10,461)	(9,754)	(19,592)	(20,122)
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from Issuance of Common Stock	73,071	0	73,071	0
Proceeds from (Payments for) Other Financing Activities	(448)	(72)	(728)	(495)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	55,450	23,548	40,068	57,663
Effect of exchange rate changes on cash and cash equivalents	(302)	(141)	(216)	(664)
Cash and cash equivalents at beginning of period	173,389	179,587	200,714	270,861
Cash and cash equivalents at end of period	257,591	205,868	257,591	205,868
Cash and Cash Equivalents, Period Increase (Decrease)	84,202	26,281	56,877	(64,993)
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	25,384	(7,793)	(3,258)	(52,711)
Capital expenditures	(88)	(75)	(134)	(87)
Proceeds from Sale of Property, Plant, and Equipment	0	0	0	0
Purchase of short term investments and equity securities	(92)	(1,597)	(99)	(1,873)
Sales and maturities of short-term investments	0	13	500	12
Acquisitions, net of cash acquired		(8,170)		(111,170)
Proceeds from Discontinued Operations Sale of Assets and Other	(1,601)	4	(3,139)	(1,764)
Payments to Acquire Interest in Subsidiaries and Affiliates	24,352	27,904	20,932	15,683
CASH USED IN INVESTING ACTIVITIES	(26,133)	(37,729)	(23,804)	(130,565)
Proceeds from Issuance of Unsecured Debt		100,000		150,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(250)	(55,286)	(500)	(61,868)
Cash payments on gold production royalty	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	(5,222)	11,703	(13,101)	9,973
Proceeds from Issuance of Common Stock	73,071		73,071
Proceeds from (Payments for) Other Financing Activities	(448)	(72)	(728)	(495)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	67,151	56,345	58,742	97,610
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0
Cash and cash equivalents at beginning of period	61,401	113,872	96,123	210,361
Cash and cash equivalents at end of period	127,803	124,695	127,803	124,695
Cash and Cash Equivalents, Period Increase (Decrease)	66,402	10,823	31,680	(85,666)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	31,117	28,679	52,577	51,389
Capital expenditures	(12,932)	(11,873)	(25,722)	(19,323)
Proceeds from Sale of Property, Plant, and Equipment	41	0	4,041	145
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term investments	648	386	1,145	386
Acquisitions, net of cash acquired		(982)		0
Proceeds from Discontinued Operations Sale of Assets and Other	196	23	302	23
Payments to Acquire Interest in Subsidiaries and Affiliates	(15,981)	(1,634)	(24,160)	(824)
CASH USED IN INVESTING ACTIVITIES	3,934	(10,812)	3,926	(17,945)
Proceeds from Issuance of Unsecured Debt		0		0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(5,673)	(1,885)	(6,503)	(3,703)
Cash payments on gold production royalty	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	(5,720)	5,283	(30,685)	(8,263)
Proceeds from Issuance of Common Stock	0		0
Proceeds from (Payments for) Other Financing Activities	0	0		0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(11,393)	3,398	(37,188)	(11,966)
Effect of exchange rate changes on cash and cash equivalents	1	0	5	0
Cash and cash equivalents at beginning of period	29,889	5,994	34,228	5,781
Cash and cash equivalents at end of period	53,548	27,259	53,548	27,259
Cash and Cash Equivalents, Period Increase (Decrease)	23,659	21,265	19,320	21,478
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	21,384	13,009	31,594	19,564
Capital expenditures	(10,268)	(11,729)	(19,604)	(21,887)
Proceeds from Sale of Property, Plant, and Equipment	7,252	8	7,261	20
Purchase of short term investments and equity securities	0	0	0	0
Sales and maturities of short-term investments	0	0	0	71
Acquisitions, net of cash acquired		0		0
Proceeds from Discontinued Operations Sale of Assets and Other	(41)	(138)	(82)	(100)
Payments to Acquire Interest in Subsidiaries and Affiliates	0	(116)	0	(116)
CASH USED IN INVESTING ACTIVITIES	(3,057)	(11,743)	(12,425)	(21,780)
Proceeds from Issuance of Unsecured Debt		0		3,500
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(789)	(9,455)	(5,680)	(9,649)
Cash payments on gold production royalty	(10,461)	(9,754)	(19,592)	(20,122)
Proceeds From Repayment Intercompany Borrowings	(12,633)	11,535	12,201	26,811
Proceeds from Issuance of Common Stock	0		0
Proceeds from (Payments for) Other Financing Activities	0	742	0	1,535
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(23,883)	(6,932)	(13,071)	2,075
Effect of exchange rate changes on cash and cash equivalents	(303)	(141)	(221)	(664)
Cash and cash equivalents at beginning of period	82,099	59,721	70,363	54,719
Cash and cash equivalents at end of period	76,240	53,914	76,240	53,914
Cash and Cash Equivalents, Period Increase (Decrease)	(5,859)	(5,807)	5,877	(805)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(31,946)	3,109	(28,357)	15,313
Capital expenditures	0	0	0	0
Proceeds from Sale of Property, Plant, and Equipment	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
Acquisitions, net of cash acquired		0		0
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	(8,371)	(26,154)	3,228	(14,743)
CASH USED IN INVESTING ACTIVITIES	8,371	26,154	(3,228)	14,743
Proceeds from Issuance of Unsecured Debt		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	23,575	(28,521)	31,585	(28,521)
Proceeds from Issuance of Common Stock	0		0
Proceeds from (Payments for) Other Financing Activities	0	(742)	0	(1,535)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	23,575	(29,263)	31,585	(30,056)
Effect of exchange rate changes on cash and cash equivalents	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
Cash and Cash Equivalents, Period Increase (Decrease)	$ 0	$ 0	$ 0	$ 0