Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Revenue		$ 148,387	$ 152,956
Costs applicable to sales	[1]	101,555	115,062
Amortization		27,964	33,090
General and Administrative Expense		8,276	8,834
Exploration Expense, Mining		1,731	4,266
Write-downs		4,446	0
Pre-development, reclamation, and other		4,204	6,763
Total costs and expenses		148,176	168,015
Gain (loss) on derivative instruments		(8,695)	(4,884)
Other, net		1,314	(2,511)
Interest expense, net		(11,120)	(10,765)
Total other income (expense), net		(18,501)	(18,160)
Income (loss) before income and mining taxes		(18,290)	(33,219)
Income and mining tax benefit (expense)		(2,106)	(68)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(20,396)	(33,287)
Income (Loss) from Equity Method Investments		0	0
NET INCOME (LOSS)		(20,396)	(33,287)
Unrealized gain (loss) on available for sale securities		1,043	(915)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	928
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		588	0
Other comprehensive income (loss)		1,631	13
COMPREHENSIVE INCOME (LOSS)		(18,765)	(33,274)
Coeur Mining, Inc.
Condensed Financial Statements, Captions [Line Items]
Revenue		0	0
Costs applicable to sales		0	0
Amortization		423	502
General and Administrative Expense		8,080	8,750
Exploration Expense, Mining		623	563
Write-downs		0
Pre-development, reclamation, and other		452	3,388
Total costs and expenses		9,578	13,203
Gain (loss) on derivative instruments		(1,582)	(1,046)
Other, net		338	1,280
Interest expense, net		(10,255)	(8,855)
Total other income (expense), net		(11,499)	(8,621)
Income (loss) before income and mining taxes		(21,077)	(21,824)
Income and mining tax benefit (expense)		(209)	1,550
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(21,286)	(20,274)
Income (Loss) from Equity Method Investments		890	(13,013)
NET INCOME (LOSS)		(20,396)	(33,287)
Unrealized gain (loss) on available for sale securities		1,043	(915)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	928
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		588
Other comprehensive income (loss)		1,631	13
COMPREHENSIVE INCOME (LOSS)		(18,765)	(33,274)
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue		93,954	88,672
Costs applicable to sales		62,364	60,811
Amortization		17,859	18,567
General and Administrative Expense		18	7
Exploration Expense, Mining		184	2,458
Write-downs		0
Pre-development, reclamation, and other		1,416	1,375
Total costs and expenses		81,841	83,218
Gain (loss) on derivative instruments		(2,249)	(2,293)
Other, net		2,254	(1,571)
Interest expense, net		(213)	(288)
Total other income (expense), net		(208)	(4,152)
Income (loss) before income and mining taxes		11,905	1,302
Income and mining tax benefit (expense)		(307)	(350)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		11,598	952
Income (Loss) from Equity Method Investments		(4,479)	809
NET INCOME (LOSS)		7,119	1,761
Unrealized gain (loss) on available for sale securities		976	(915)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	928
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		(381)
Other comprehensive income (loss)		595	13
COMPREHENSIVE INCOME (LOSS)		7,714	1,774
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue		54,433	64,284
Costs applicable to sales		39,191	54,251
Amortization		9,682	14,021
General and Administrative Expense		178	77
Exploration Expense, Mining		924	1,245
Write-downs		4,446
Pre-development, reclamation, and other		2,336	2,000
Total costs and expenses		56,757	71,594
Gain (loss) on derivative instruments		(4,864)	(1,545)
Other, net		(253)	(1,398)
Interest expense, net		(1,677)	(2,444)
Total other income (expense), net		(6,794)	(5,387)
Income (loss) before income and mining taxes		(9,118)	(12,697)
Income and mining tax benefit (expense)		(1,590)	(1,268)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		(10,708)	(13,965)
Income (Loss) from Equity Method Investments		0	0
NET INCOME (LOSS)		(10,708)	(13,965)
Unrealized gain (loss) on available for sale securities		0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		0
Other comprehensive income (loss)		0	0
COMPREHENSIVE INCOME (LOSS)		(10,708)	(13,965)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Revenue		0	0
Costs applicable to sales		0	0
Amortization		0	0
General and Administrative Expense		0	0
Exploration Expense, Mining		0	0
Write-downs		0
Pre-development, reclamation, and other		0	0
Total costs and expenses		0	0
Gain (loss) on derivative instruments		0	0
Other, net		(1,025)	(822)
Interest expense, net		1,025	822
Total other income (expense), net		0	0
Income (loss) before income and mining taxes		0	0
Income and mining tax benefit (expense)		0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		0	0
Income (Loss) from Equity Method Investments		3,589	12,204
NET INCOME (LOSS)		3,589	12,204
Unrealized gain (loss) on available for sale securities		(976)	915
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax		0	(928)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax		381
Other comprehensive income (loss)		(595)	(13)
COMPREHENSIVE INCOME (LOSS)		$ 2,994	$ 12,191

[1] Excludes amortization.