Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations	$ 9,947	$ 26,435	$ 1,956	$ 10,589
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) operating activities	9,947	26,435	1,956	10,589
Capital expenditures	(16,682)	(20,749)	(38,890)	(48,187)
Proceeds from the sale of assets	9	57	4,515	904
Purchase of investments				0
Proceeds from Collection of Notes Receivable	0	2,000	0	7,168
Other	(183)	277	(200)	2,018
Investments in consolidated subsidiaries	0	0	0	0
Cash provided by (used in) activities of continuing operations	2,946	(17,313)	(14,773)	(36,995)
Cash provided by (used in) activities of discontinued operations	0	0	0	0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	2,946	(17,313)	(14,773)	(36,995)
Proceeds from Issuance of Common Stock	0	48,887	0	48,887
Issuance of notes and bank borrowings, net of issuance costs	100,000	0	150,000	15,000
Payments on debt, capital leases, and associated costs	(95,713)	(90,812)	(101,614)	(113,273)
Payment for Contingent Consideration Liability, Financing Activities	0	0	(18,750)	0
Net intercompany financing activity	0	0	0	0
Other	141	0	(1,832)	(3,259)
Cash provided by (used in) activities of continuing operations	4,428	(41,925)	27,804	(52,645)
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) activities of discontinued operations	4,428	(41,925)	27,804	(52,645)
Effect of exchange rate changes on cash and cash equivalents	929	56	303	257
Less net cash provided by (used in) discontinued operations	0	0	0	0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	18,250	(32,747)	15,290	(78,794)
Cash, cash equivalents and restricted cash at beginning of period	54,058	72,022	57,018	118,069
Cash, cash equivalents and restricted cash at end of period	72,308	39,275	72,308	39,275
Proceeds from Sale and Maturity of Marketable Securities	19,802	1,102	19,802	1,102
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations	4,522	24,049		45,199
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) operating activities	4,522	24,049	(1,398)	45,199
Capital expenditures	0	0	0	0
Proceeds from the sale of assets	0	0	0	0
Purchase of investments				0
Proceeds from Collection of Notes Receivable		0		0
Other	0	0	0	0
Investments in consolidated subsidiaries	(4,522)	(24,049)	1,398	(45,199)
Cash provided by (used in) activities of continuing operations	(4,522)	(24,049)		(45,199)
Cash provided by (used in) activities of discontinued operations		0		0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(24,049)	1,398	(45,199)
Proceeds from Issuance of Common Stock		0		0
Issuance of notes and bank borrowings, net of issuance costs	0		0	0
Payments on debt, capital leases, and associated costs	0	0	0	0
Payment for Contingent Consideration Liability, Financing Activities			0
Net intercompany financing activity	0	0	0	0
Other	0	0	0	0
Cash provided by (used in) activities of continuing operations		0	0	0
Cash provided by (used in) activities of discontinued operations		0		0
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0	0	0
Less net cash provided by (used in) discontinued operations		0		0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	0	0	0	0
Cash, cash equivalents and restricted cash at beginning of period	0	0	0	0
Cash, cash equivalents and restricted cash at end of period	0	0	0	0
Proceeds from Sale and Maturity of Marketable Securities	0	0	0	0
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations	(14,684)	(43,768)		(78,163)
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) operating activities	(14,684)	(43,768)	(18,141)	(78,163)
Capital expenditures	(156)	(72)	(177)	(110)
Proceeds from the sale of assets	0	0	4,500	0
Purchase of investments				0
Proceeds from Collection of Notes Receivable		2,000		7,168
Other	0	230	0	2,032
Investments in consolidated subsidiaries	4,452	23,725	(1,598)	44,740
Cash provided by (used in) activities of continuing operations	24,098	26,985		54,932
Cash provided by (used in) activities of discontinued operations		0		0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		26,985	22,527	54,932
Proceeds from Issuance of Common Stock		48,887		48,887
Issuance of notes and bank borrowings, net of issuance costs	100,000		150,000	15,000
Payments on debt, capital leases, and associated costs	(90,000)	(82,702)	(90,000)	(97,807)
Payment for Contingent Consideration Liability, Financing Activities			0
Net intercompany financing activity	(3,616)	41,479	(42,216)	51,705
Other	141	0	(1,832)	(3,259)
Cash provided by (used in) activities of continuing operations		7,664	15,952	14,526
Cash provided by (used in) activities of discontinued operations		0		0
Cash provided by (used in) activities of discontinued operations	6,525	7,664	15,952	14,526
Effect of exchange rate changes on cash and cash equivalents	3	0	3	0
Less net cash provided by (used in) discontinued operations		0		0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	15,942	(9,119)	20,341	(8,705)
Cash, cash equivalents and restricted cash at beginning of period	11,074	13,162	6,675	12,748
Cash, cash equivalents and restricted cash at end of period	27,016	4,043	27,016	4,043
Proceeds from Sale and Maturity of Marketable Securities	19,802	1,102	19,802	1,102
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations	38,128	43,095		51,563
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) operating activities	38,128	43,095	40,359	51,563
Capital expenditures	(10,044)	(7,820)	(20,535)	(22,251)
Proceeds from the sale of assets	9	57	15	810
Purchase of investments				0
Proceeds from Collection of Notes Receivable		0		0
Other	0	113	0	113
Investments in consolidated subsidiaries	1	85	(38)	85
Cash provided by (used in) activities of continuing operations	(10,034)	(7,565)		(21,243)
Cash provided by (used in) activities of discontinued operations		0		0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(7,565)	(20,558)	(21,243)
Proceeds from Issuance of Common Stock		0		0
Issuance of notes and bank borrowings, net of issuance costs	0		0	0
Payments on debt, capital leases, and associated costs	(3,674)	(5,753)	(7,649)	(10,140)
Payment for Contingent Consideration Liability, Financing Activities			0
Net intercompany financing activity	(19,328)	(30,949)	(17,471)	(36,306)
Other	0	0	0	0
Cash provided by (used in) activities of continuing operations		(36,702)	(25,120)	(46,446)
Cash provided by (used in) activities of discontinued operations		0		0
Cash provided by (used in) activities of discontinued operations	(23,002)	(36,702)	(25,120)	(46,446)
Effect of exchange rate changes on cash and cash equivalents	(8)	(1)	(35)	2
Less net cash provided by (used in) discontinued operations		0		0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	5,084	(1,173)	(5,354)	(16,124)
Cash, cash equivalents and restricted cash at beginning of period	16,800	10,581	27,238	25,532
Cash, cash equivalents and restricted cash at end of period	21,884	9,408	21,884	9,408
Proceeds from Sale and Maturity of Marketable Securities	0	0	0	0
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations	(18,019)	3,059		(8,010)
Cash provided by (used in) activities of discontinued operations	0	0	0	0
Cash provided by (used in) operating activities	(18,019)	3,059	(18,864)	(8,010)
Capital expenditures	(6,482)	(12,857)	(18,178)	(25,826)
Proceeds from the sale of assets	0	0	0	94
Purchase of investments				0
Proceeds from Collection of Notes Receivable		0		0
Other	(183)	(66)	(200)	(127)
Investments in consolidated subsidiaries	69	239	238	374
Cash provided by (used in) activities of continuing operations	(6,596)	(12,684)		(25,485)
Cash provided by (used in) activities of discontinued operations		0		0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(12,684)	(18,140)	(25,485)
Proceeds from Issuance of Common Stock		0		0
Issuance of notes and bank borrowings, net of issuance costs	0		0	0
Payments on debt, capital leases, and associated costs	(2,039)	(2,357)	(3,965)	(5,326)
Payment for Contingent Consideration Liability, Financing Activities			(18,750)
Net intercompany financing activity	22,944	(10,530)	59,687	(15,399)
Other	0	0	0	0
Cash provided by (used in) activities of continuing operations		(12,887)	36,972	(20,725)
Cash provided by (used in) activities of discontinued operations		0		0
Cash provided by (used in) activities of discontinued operations	20,905	(12,887)	36,972	(20,725)
Effect of exchange rate changes on cash and cash equivalents	934	57	335	255
Less net cash provided by (used in) discontinued operations		0		0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(2,776)	(22,455)	303	(53,965)
Cash, cash equivalents and restricted cash at beginning of period	26,184	48,279	23,105	79,789
Cash, cash equivalents and restricted cash at end of period	23,408	25,824	23,408	25,824
Proceeds from Sale and Maturity of Marketable Securities	$ 0	$ 0	$ 0	$ 0