Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations		$ 41,996	$ 5,789	$ 52,585	$ 20,036
Cash provided by (used in) activities of discontinued operations		0	0	0	(2,690)
Cash provided by (used in) operating activities		41,996	5,789	52,585	17,346
Capital expenditures		(30,678)	(39,472)	(78,865)	(122,982)
Proceeds from the sale of assets		26	393	930	549
Purchase of investments		0	(15)	0	(415)
Sales of investments		1,007	(78)	2,109	12,682
Proceeds from Collection of Notes Receivable		0	15,000	7,168	15,000
Other		(57)	64	1,961	(34)
Investments in consolidated subsidiaries		0	0	0	0
Cash provided by (used in) activities of continuing operations		(29,702)	(24,108)	(66,697)	(95,200)
Cash provided by (used in) activities of discontinued operations		0	0	0	(28,470)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(29,702)	(24,108)	(66,697)	(123,670)
Issuance of notes and bank borrowings, net of issuance costs		30,000	25,000	45,000	40,000
Payments on debt, capital leases, and associated costs		(87,778)	(25,533)	(201,051)	(48,355)
Net intercompany financing activity		0	0	0	0
Proceeds from Issuance of Common Stock		73,781	0	122,668	0
Other		301	(77)	(2,958)	(4,916)
Cash provided by (used in) activities of continuing operations		16,304	(610)	(36,341)	(13,271)
Cash provided by (used in) activities of discontinued operations		0	0	0	(22)
Cash provided by (used in) activities of discontinued operations		16,304	(610)	(36,341)	(13,293)
Effect of exchange rate changes on cash and cash equivalents		(192)	183	65	565
Less net cash provided by (used in) discontinued operations	[1]	0	0	0	(32,930)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		28,406	(18,746)	(50,388)	(86,122)
Cash, cash equivalents and restricted cash at beginning of period		39,275	136,026	118,069	203,402
Cash, cash equivalents and restricted cash at end of period		67,681	117,280	67,681	117,280
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations					5,625
Cash provided by (used in) activities of discontinued operations					0
Cash provided by (used in) operating activities		11,280	24,343	56,479	5,625
Capital expenditures		0	0	0	0
Proceeds from the sale of assets		0	0	0	0
Purchase of investments			0	0	0
Sales of investments		0	0	0	0
Proceeds from Collection of Notes Receivable		0	0	0	0
Other		0	0	0	0
Investments in consolidated subsidiaries		(11,280)	(24,343)	(56,479)	(5,625)
Cash provided by (used in) activities of continuing operations					(5,625)
Cash provided by (used in) activities of discontinued operations					0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(11,280)	(24,343)	(56,479)	(5,625)
Issuance of notes and bank borrowings, net of issuance costs		0	0	0	0
Payments on debt, capital leases, and associated costs		0	0	0	0
Net intercompany financing activity		0	0	0	0
Proceeds from Issuance of Common Stock		0		0
Other		0	0	0	0
Cash provided by (used in) activities of continuing operations		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
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
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations					(36,687)
Cash provided by (used in) activities of discontinued operations					0
Cash provided by (used in) operating activities		(18,772)	(37,112)	(96,935)	(36,687)
Capital expenditures		(239)	(119)	(349)	(303)
Proceeds from the sale of assets		0	0	0	23
Purchase of investments			(15)	0	(415)
Sales of investments		1,007	(126)	2,109	11,694
Proceeds from Collection of Notes Receivable		0	15,000	7,168	15,000
Other		2	124	2,034	45
Investments in consolidated subsidiaries		11,372	24,121	56,112	4,922
Cash provided by (used in) activities of continuing operations					30,966
Cash provided by (used in) activities of discontinued operations					0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		12,142	38,985	67,074	30,966
Issuance of notes and bank borrowings, net of issuance costs		30,000	25,000	45,000	40,000
Payments on debt, capital leases, and associated costs		(83,034)	(20,000)	(180,841)	(20,000)
Net intercompany financing activity		(6,842)	(7,130)	44,863	(41,498)
Proceeds from Issuance of Common Stock		73,781		122,668
Other		301	(77)	(2,958)	(4,916)
Cash provided by (used in) activities of continuing operations		14,206			(26,414)
Cash provided by (used in) activities of discontinued operations		0			0
Cash provided by (used in) activities of discontinued operations		14,206	(2,207)	28,732	(26,414)
Effect of exchange rate changes on cash and cash equivalents		0	0	0	0
Less net cash provided by (used in) discontinued operations					0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		7,576	(334)	(1,129)	(32,135)
Cash, cash equivalents and restricted cash at beginning of period		4,043	24,232	12,748	56,033
Cash, cash equivalents and restricted cash at end of period		11,619	23,898	11,619	23,898
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations					33,173
Cash provided by (used in) activities of discontinued operations					0
Cash provided by (used in) operating activities		24,553	7,058	76,116	33,173
Capital expenditures		(16,748)	(16,720)	(38,999)	(43,598)
Proceeds from the sale of assets		26	304	836	437
Purchase of investments			0	0	0
Sales of investments		0	48	0	988
Proceeds from Collection of Notes Receivable		0	0	0	0
Other		(44)	0	69	109
Investments in consolidated subsidiaries		45	56	130	121
Cash provided by (used in) activities of continuing operations					(41,943)
Cash provided by (used in) activities of discontinued operations					0
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(16,721)	(16,312)	(37,964)	(41,943)
Issuance of notes and bank borrowings, net of issuance costs		0	0	0	0
Payments on debt, capital leases, and associated costs		(3,305)	(3,535)	(13,445)	(8,462)
Net intercompany financing activity		(12,322)	(4,844)	(48,628)	(12,436)
Proceeds from Issuance of Common Stock		0		0
Other		0	0	0	0
Cash provided by (used in) activities of continuing operations		(15,627)			(20,898)
Cash provided by (used in) activities of discontinued operations		0			0
Cash provided by (used in) activities of discontinued operations		(15,627)	(8,379)	(62,073)	(20,898)
Effect of exchange rate changes on cash and cash equivalents		74	(2)	76	(6)
Less net cash provided by (used in) discontinued operations					0
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		(7,721)	(17,635)	(23,845)	(29,674)
Cash, cash equivalents and restricted cash at beginning of period		16,669	40,200	32,793	52,239
Cash, cash equivalents and restricted cash at end of period		8,948	22,565	8,948	22,565
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash provided by (used in) activities of continuing operations					17,925
Cash provided by (used in) activities of discontinued operations					(2,690)
Cash provided by (used in) operating activities		24,935	11,500	16,925	15,235
Capital expenditures		(13,691)	(22,633)	(39,517)	(79,081)
Proceeds from the sale of assets		0	89	94	89
Purchase of investments			0	0	0
Sales of investments		0	0	0	0
Proceeds from Collection of Notes Receivable		0	0	0	0
Other		(15)	(60)	(142)	(188)
Investments in consolidated subsidiaries		(137)	166	237	582
Cash provided by (used in) activities of continuing operations					(78,598)
Cash provided by (used in) activities of discontinued operations					(28,470)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(13,843)	(22,438)	(39,328)	(107,068)
Issuance of notes and bank borrowings, net of issuance costs		0	0	0	0
Payments on debt, capital leases, and associated costs		(1,439)	(1,998)	(6,765)	(19,893)
Net intercompany financing activity		19,164	11,974	3,765	53,934
Proceeds from Issuance of Common Stock		0		0
Other		0	0	0	0
Cash provided by (used in) activities of continuing operations		17,725			34,041
Cash provided by (used in) activities of discontinued operations		0			(22)
Cash provided by (used in) activities of discontinued operations		17,725	9,976	(3,000)	34,019
Effect of exchange rate changes on cash and cash equivalents		(266)	185	(11)	571
Less net cash provided by (used in) discontinued operations					(32,930)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH		28,551	(777)	(25,414)	(24,313)
Cash, cash equivalents and restricted cash at beginning of period		18,563	71,594	72,528	95,130
Cash, cash equivalents and restricted cash at end of period		$ 47,114	$ 70,817	$ 47,114	$ 70,817

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