Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		$ (11,846)	$ 15,541
Cash provided by (used in) activities of discontinued operations		0	(2,690)
Cash provided by (used in) operating activities		(11,846)	12,851
Capital expenditures		(27,438)	(42,345)
Proceeds from the sale of assets		847	60
Purchase of investments		0	(361)
Sales of investments		1,168	1,619
Other		1,741	(65)
Investments in consolidated subsidiaries		0	0
Cash provided by (used in) activities of continuing operations		(23,682)	(41,092)
Cash provided by (used in) activities of discontinued operations		0	(28,470)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(23,682)	(69,562)
Issuance of notes and bank borrowings, net of issuance costs		15,000	15,000
Payments on debt, capital leases, and associated costs		(22,356)	(18,449)
Net intercompany financing activity		0	0
Other		(3,364)	(4,606)
Cash provided by (used in) activities of continuing operations		(10,720)	(8,055)
Cash provided by (used in) activities of discontinued operations		0	(22)
Cash provided by (used in) activities of discontinued operations		(10,720)	(8,077)
Effect of exchange rate changes on cash and cash equivalents		201	557
Less net cash provided by (used in) discontinued operations	[1]	0	(32,930)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(46,047)	(31,301)
Cash, cash equivalents and restricted cash at beginning of period		118,069	203,402
Cash, cash equivalents and restricted cash at end of period		72,022	172,101
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		21,150	(3,956)
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) operating activities		21,150	(3,956)
Capital expenditures		0	0
Proceeds from the sale of assets		0	0
Purchase of investments			0
Sales of investments		0	0
Other		0	0
Investments in consolidated subsidiaries		(21,150)	3,956
Cash provided by (used in) activities of continuing operations		(21,150)	3,956
Cash provided by (used in) activities of discontinued operations			0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(21,150)	3,956
Issuance of notes and bank borrowings, net of issuance costs		0	0
Payments on debt, capital leases, and associated costs		0	0
Net intercompany financing activity		0	0
Other		0	0
Cash provided by (used in) activities of continuing operations		0	0
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) activities of discontinued operations		0	0
Effect of exchange rate changes on cash and cash equivalents		0	0
Less net cash provided by (used in) discontinued operations			0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		0	0
Cash, cash equivalents and restricted cash at beginning of period		0	0
Cash, cash equivalents and restricted cash at end of period		0	0
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		(30,395)	(7,938)
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) operating activities		(30,395)	(7,938)
Capital expenditures		(38)	(83)
Proceeds from the sale of assets		0	0
Purchase of investments			(361)
Sales of investments		1,168	1,067
Other		1,803	0
Investments in consolidated subsidiaries		21,015	4,162
Cash provided by (used in) activities of continuing operations		23,948	(3,539)
Cash provided by (used in) activities of discontinued operations			0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		23,948	(3,539)
Issuance of notes and bank borrowings, net of issuance costs		15,000	15,000
Payments on debt, capital leases, and associated costs		(15,000)	0
Net intercompany financing activity		10,226	20,381
Other		(3,364)	(4,606)
Cash provided by (used in) activities of continuing operations		6,862	(9,987)
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) activities of discontinued operations		6,862	(9,987)
Effect of exchange rate changes on cash and cash equivalents		0	0
Less net cash provided by (used in) discontinued operations			0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		415	(21,464)
Cash, cash equivalents and restricted cash at beginning of period		12,747	56,033
Cash, cash equivalents and restricted cash at end of period		13,162	34,569
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		8,468	5,395
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) operating activities		8,468	5,395
Capital expenditures		(14,431)	(14,341)
Proceeds from the sale of assets		753	60
Purchase of investments			0
Sales of investments		0	552
Other		0	0
Investments in consolidated subsidiaries		0	(37)
Cash provided by (used in) activities of continuing operations		(13,678)	(13,692)
Cash provided by (used in) activities of discontinued operations			0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(13,678)	(13,692)
Issuance of notes and bank borrowings, net of issuance costs		0	0
Payments on debt, capital leases, and associated costs		(4,387)	(2,395)
Net intercompany financing activity		(5,357)	10,946
Other		0	0
Cash provided by (used in) activities of continuing operations		(9,744)	(13,341)
Cash provided by (used in) activities of discontinued operations			0
Cash provided by (used in) activities of discontinued operations		(9,744)	(13,341)
Effect of exchange rate changes on cash and cash equivalents		3	2
Less net cash provided by (used in) discontinued operations			0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(14,951)	(21,636)
Cash, cash equivalents and restricted cash at beginning of period		25,532	52,239
Cash, cash equivalents and restricted cash at end of period		10,581	30,603
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		(11,069)	22,040
Cash provided by (used in) activities of discontinued operations			(2,690)
Cash provided by (used in) operating activities		(11,069)	19,350
Capital expenditures		(12,969)	(27,921)
Proceeds from the sale of assets		94	0
Purchase of investments			0
Sales of investments		0	0
Other		(62)	(65)
Investments in consolidated subsidiaries		135	(169)
Cash provided by (used in) activities of continuing operations		(12,802)	(27,817)
Cash provided by (used in) activities of discontinued operations			(28,470)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(12,802)	(56,287)
Issuance of notes and bank borrowings, net of issuance costs		0	0
Payments on debt, capital leases, and associated costs		(2,969)	(16,054)
Net intercompany financing activity		(4,869)	(31,327)
Other		0	0
Cash provided by (used in) activities of continuing operations		(7,838)	15,273
Cash provided by (used in) activities of discontinued operations			(22)
Cash provided by (used in) activities of discontinued operations		(7,838)	15,251
Effect of exchange rate changes on cash and cash equivalents		198	555
Less net cash provided by (used in) discontinued operations			(32,930)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(31,511)	11,799
Cash, cash equivalents and restricted cash at beginning of period		79,790	95,130
Cash, cash equivalents and restricted cash at end of period		$ 48,279	$ 106,929

[1] Less net cash provided by (used in) discontinued operations includes the following cash transactions: net subsidiary payments to parent company of $1,748, during the three months ended