Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 162,182		$ 200,714
Receivables	60,431		85,992
Ore on leach pads	64,167		67,329
Inventory, Net	106,026		81,711
Prepaid expenses and other	17,981		10,942
Current assets	410,787		446,688
Property, plant and equipment, net	216,796		195,999
Mining properties, net	558,455		589,219
Ore on leach pads	67,231		44,582
Restricted assets	17,597		11,633
Equity securities	4,488		2,766
Receivables	30,951		24,768
Deferred tax assets	191		1,942
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0		0
Other Assets, Noncurrent	12,413		14,892
TOTAL ASSETS	1,318,909		1,332,489
Accounts payable	53,335		52,153
Accrued liabilities and other	42,743		50,532
Debt	12,039	$ 12,039	10,431
Royalty obligations	4,995		24,893
Reclamation	3,522		2,071
Liabilities, Current	116,634		140,080
Debt	198,857	$ 198,857	479,979
Royalty obligations	4,292		4,864
Reclamation	95,804		83,197
Deferred tax liabilities	74,798		147,132
Other long-term liabilities	60,037		55,761
Intercompany Payable Receivable	0		0
Non-current liabilities	433,788		770,933
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	1,809		1,513
Additional paid-in capital	3,314,590		3,024,461
Accumulated deficit	(2,545,424)		(2,600,776)
Accumulated other comprehensive income (loss)	(2,488)		(3,722)
Stockholders' equity	768,487		421,476	$ 554,328	$ 1,730,567
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,318,909		1,332,489
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	58,048		96,123
Receivables	12		11
Ore on leach pads	0		0
Inventory, Net	0		0
Prepaid expenses and other	3,803		3,496
Current assets	61,863		99,630
Property, plant and equipment, net	3,222		4,546
Mining properties, net	0		0
Ore on leach pads	0		0
Restricted assets	10,170		5,755
Equity securities	0		434
Receivables	0		0
Deferred tax assets	0		0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	273,056		127,671
Other Assets, Noncurrent	221,381		54,578
TOTAL ASSETS	569,692		292,614
Accounts payable	2,153		1,743
Accrued liabilities and other	12,881		20,555
Debt	0		1,000
Royalty obligations	0		0
Reclamation	0		0
Liabilities, Current	15,034		23,298
Debt	175,991		467,634
Royalty obligations	0		0
Reclamation	0		0
Deferred tax liabilities	13,810		28,600
Other long-term liabilities	1,993		2,171
Intercompany Payable Receivable	(405,623)		(650,565)
Non-current liabilities	(213,829)		(152,160)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	1,809		1,513
Additional paid-in capital	3,314,590		3,024,461
Accumulated deficit	(2,545,424)		(2,600,776)
Accumulated other comprehensive income (loss)	(2,488)		(3,722)
Stockholders' equity	768,487		421,476
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	569,692		292,614
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	50,023		34,228
Receivables	6,865		12,773
Ore on leach pads	64,167		67,329
Inventory, Net	49,393		45,491
Prepaid expenses and other	1,459		1,075
Current assets	171,907		160,896
Property, plant and equipment, net	139,885		138,706
Mining properties, net	195,791		199,303
Ore on leach pads	67,231		44,582
Restricted assets	226		381
Equity securities	4,488		2,332
Receivables	0		0
Deferred tax assets	0		0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	11,650		27,657
Other Assets, Noncurrent	9,263		9,197
TOTAL ASSETS	600,441		583,054
Accounts payable	24,921		21,956
Accrued liabilities and other	13,664		11,177
Debt	6,516		8,120
Royalty obligations	4,995		4,729
Reclamation	2,672		1,401
Liabilities, Current	52,768		47,383
Debt	15,214		4,947
Royalty obligations	4,292		4,864
Reclamation	75,183		61,924
Deferred tax liabilities	6,179		6,927
Other long-term liabilities	4,750		3,838
Intercompany Payable Receivable	336,813		411,103
Non-current liabilities	442,431		493,603
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	250		250
Additional paid-in capital	181,009		179,553
Accumulated deficit	(73,529)		(135,049)
Accumulated other comprehensive income (loss)	(2,488)		(2,686)
Stockholders' equity	105,242		42,068
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	600,441		583,054
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	54,111		70,363
Receivables	53,554		73,208
Ore on leach pads	0		0
Inventory, Net	56,633		36,220
Prepaid expenses and other	12,719		6,371
Current assets	177,017		186,162
Property, plant and equipment, net	73,689		52,747
Mining properties, net	362,664		389,916
Ore on leach pads	0		0
Restricted assets	7,201		5,497
Equity securities	0		0
Receivables	30,951		24,768
Deferred tax assets	191		1,942
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0		0
Other Assets, Noncurrent	3,153		5,695
TOTAL ASSETS	654,866		666,727
Accounts payable	26,261		28,454
Accrued liabilities and other	16,198		18,800
Debt	5,523		1,311
Royalty obligations	0		20,164
Reclamation	850		1,821
Liabilities, Current	48,832		70,550
Debt	229,036		61,976
Royalty obligations	0		0
Reclamation	20,621		20,122
Deferred tax liabilities	54,809		111,605
Other long-term liabilities	53,294		49,752
Intercompany Payable Receivable	68,810		239,462
Non-current liabilities	426,570		482,917
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	197,913		130,885
Additional paid-in capital	1,864,261		1,896,047
Accumulated deficit	(1,882,710)		(1,913,672)
Accumulated other comprehensive income (loss)	0		0
Stockholders' equity	179,464		113,260
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	654,866		666,727
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0		0
Receivables	0		0
Ore on leach pads	0		0
Inventory, Net	0		0
Prepaid expenses and other	0		0
Current assets	0		0
Property, plant and equipment, net	0		0
Mining properties, net	0		0
Ore on leach pads	0		0
Restricted assets	0		0
Equity securities	0		0
Receivables	0		0
Deferred tax assets	0		0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	(284,706)		(155,328)
Other Assets, Noncurrent	(221,384)		(54,578)
TOTAL ASSETS	(506,090)		(209,906)
Accounts payable	0		0
Accrued liabilities and other	0		0
Debt	0		0
Royalty obligations	0		0
Reclamation	0		(1,151)
Liabilities, Current	0		(1,151)
Debt	(221,384)		(54,578)
Royalty obligations	0		0
Reclamation	0		1,151
Deferred tax liabilities	0		0
Other long-term liabilities	0		0
Intercompany Payable Receivable	0		0
Non-current liabilities	(221,384)		(53,427)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	(198,163)		(131,135)
Additional paid-in capital	(2,045,270)		(2,075,600)
Accumulated deficit	1,956,239		2,048,721
Accumulated other comprehensive income (loss)	2,488		2,686
Stockholders' equity	(284,706)		(155,328)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ (506,090)		$ (209,906)