Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 55,271	$ 6,617
Capital expenditures	(23,979)	(22,172)
Proceeds from Sale of Property, Plant, and Equipment	15,019	4,009
Purchase of short term investments and equity securities	(1,016)	(7)
Sales and maturities of short-term investments	10,020	997
Payments for (Proceeds from) Other Investing Activities	(1,546)	(1,473)
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0
CASH USED IN INVESTING ACTIVITIES	(1,502)	(18,646)
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(3,226)	(5,971)
Cash payments on gold production royalty	0	(9,131)
Proceeds From Repayment Intercompany Borrowings	0	0
Proceeds from (Payments for) Other Financing Activities	(3,247)	(280)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(6,473)	(15,382)
Effect of exchange rate changes on cash and cash equivalents	555	86
Cash and Cash Equivalents, Period Increase (Decrease)	47,851	(27,325)
Cash and cash equivalents at beginning of period	162,182	200,714
Cash and cash equivalents at end of period	210,033	173,389
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(4,815)	(28,642)
Capital expenditures	(319)	(46)
Proceeds from Sale of Property, Plant, and Equipment	8,916	0
Purchase of short term investments and equity securities	(1,016)	(7)
Sales and maturities of short-term investments	9,157	501
Payments for (Proceeds from) Other Investing Activities	(1,486)	(1,539)
Payments to Acquire Interest in Subsidiaries and Affiliates	(12,454)	3,420
CASH USED IN INVESTING ACTIVITIES	2,798	2,329
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	(250)
Cash payments on gold production royalty		0
Proceeds From Repayment Intercompany Borrowings	14,318	(7,879)
Proceeds from (Payments for) Other Financing Activities	(3,247)	(280)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	11,071	(8,409)
Effect of exchange rate changes on cash and cash equivalents	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	9,054	(34,722)
Cash and cash equivalents at beginning of period	58,048	96,123
Cash and cash equivalents at end of period	67,102	61,401
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	17,183	21,460
Capital expenditures	(16,975)	(12,790)
Proceeds from Sale of Property, Plant, and Equipment	6,151	4,000
Purchase of short term investments and equity securities	0	0
Sales and maturities of short-term investments	863	496
Payments for (Proceeds from) Other Investing Activities	0	107
Payments to Acquire Interest in Subsidiaries and Affiliates	(70)	8,179
CASH USED IN INVESTING ACTIVITIES	(10,031)	(8)
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,874)	(830)
Cash payments on gold production royalty		0
Proceeds From Repayment Intercompany Borrowings	(9,325)	(24,965)
Proceeds from (Payments for) Other Financing Activities	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(11,199)	(25,795)
Effect of exchange rate changes on cash and cash equivalents	0	4
Cash and Cash Equivalents, Period Increase (Decrease)	(4,047)	(4,339)
Cash and cash equivalents at beginning of period	50,023	34,228
Cash and cash equivalents at end of period	45,976	29,889
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	58,979	10,210
Capital expenditures	(6,685)	(9,336)
Proceeds from Sale of Property, Plant, and Equipment	(48)	9
Purchase of short term investments and equity securities	0	0
Sales and maturities of short-term investments	0	0
Payments for (Proceeds from) Other Investing Activities	(60)	(41)
Payments to Acquire Interest in Subsidiaries and Affiliates	67	0
CASH USED IN INVESTING ACTIVITIES	(6,726)	(9,368)
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	(1,352)	(4,891)
Cash payments on gold production royalty		(9,131)
Proceeds From Repayment Intercompany Borrowings	(8,612)	24,834
Proceeds from (Payments for) Other Financing Activities	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(9,964)	10,812
Effect of exchange rate changes on cash and cash equivalents	555	82
Cash and Cash Equivalents, Period Increase (Decrease)	42,844	11,736
Cash and cash equivalents at beginning of period	54,111	70,363
Cash and cash equivalents at end of period	96,955	82,099
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net Cash Provided by (Used in) Operating Activities	(16,076)	3,589
Capital expenditures	0	0
Proceeds from Sale of Property, Plant, and Equipment	0	0
Purchase of short term investments and equity securities	0	0
Sales and maturities of short-term investments	0	0
Payments for (Proceeds from) Other Investing Activities	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	12,457	(11,599)
CASH USED IN INVESTING ACTIVITIES	12,457	(11,599)
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0
Cash payments on gold production royalty		0
Proceeds From Repayment Intercompany Borrowings	3,619	8,010
Proceeds from (Payments for) Other Financing Activities	0	0
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3,619	8,010
Effect of exchange rate changes on cash and cash equivalents	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0