Coeur Mining (CDE) 10-Q 6 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 05, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'COEUR MINING, INC.	'
Entity Central Index Key	'0000215466	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'CDE	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	103,466,078

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended				6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Statement of Comprehensive Income [Abstract]	'		'		'		'
Total Revenue	$164,562		$204,525		$324,195		$376,322
COSTS AND EXPENSES	'		'		'		'
Costs applicable to sales	118,687	[1]	142,386	[1]	225,583	[1]	230,444	[1]
Amortization	41,422		56,894		81,849		106,589
General and administrative	9,398		15,026		23,294		25,253
Exploration	5,153		6,774		9,370		13,615
Loss Related to Litigation Settlement	0		32,046		0		32,046
Pre-development, reclamation, and other	8,760		1,817		15,775		7,163
Total cost and expenses	183,420		254,943		355,871		415,110
OTHER INCOME (EXPENSE), NET	'		'		'		'
Fair value adjustments, net	-8,282		66,754		-19,717		84,550
Impairment of marketable securities	-934		-17,192		-3,522		-17,227
Interest and other income	-116		419		-2,100		4,275
Interest expense, net of capitalized interest	-12,310		-10,930		-25,365		-20,662
Total other income and expense	-21,642		39,051		-50,704		50,936
Income before income taxes	-40,500		-11,367		-82,380		12,148
Income tax benefit (expense)	-2,621		-23,673		2,068		-34,918
NET INCOME (LOSS)	-43,121		-35,040		-80,312		-22,770
Other Comprehensive Income (Loss), Net of Tax:	'		'		'		'
Unrealized loss on marketable securities, net of tax of $487 and $253 for the three and six months ended June 30, 2014, respectively	-773		-7,491		-401		-11,057
Reclassification adjustments for impairment of marketable securities, net of tax of $(362) and $(1,363) for the three and six months ended June 30, 2014, respectively	572		17,192		2,159		17,227
Reclassification adjustments for realized loss on sale of marketable securities, net of tax of $(10) for the three and six months ended June 30, 2014, respectively	17		0		17		0
Other comprehensive income (loss)	-184		9,701		1,775		6,170
COMPREHENSIVE INCOME	($43,305)		($25,339)		($78,537)		($16,600)
BASIC AND DILUTED INCOME PER SHARE	'		'		'		'
Basic (in dollars per share)	($0.42)		($0.35)		($0.78)		($0.24)
Diluted (in dollars per share)	($0.42)		($0.35)		($0.78)		($0.24)
[1]	Excludes amortization.

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]	'	'	'
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax	$487	'	$253
Other Comprehensive Income (Loss), Reclassification Adjustment for Write-down of Securities Included in Net Income, Net of Tax	-362	'	-1,363
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	($10)	($10)	'

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'
Net income (loss)	($43,121)	($35,040)	($80,312)	($22,770)
Adjustments:	'	'	'	'
Amortization	41,422	56,896	81,849	106,589
Accretion	4,502	5,380	9,093	10,840
Deferred income taxes	-3,844	12,123	-15,705	19,548
Loss on termination of revolving credit facility	0	0	3,035	0
Fair value adjustments, net	8,288	-65,754	18,845	-81,795
Proceeds From Settlement	0	22,046	0	22,046
Stock-based compensation	2,385	1,617	4,950	2,713
(Gain) loss on Disposition of Assets	-48	-264	222	-1,132
Impairment of marketable securities	934	17,192	3,522	17,227
Other non-cash charges	-12	234	-219	-112
Changes in operating assets and liabilities:	'	'	'	'
Receivables and other current assets	4,921	4,401	10,544	8,647
Prepaid expenses and other	3,551	2,930	-4,558	411
Inventories	-1,606	31,483	-15,519	10,990
Accounts payable and accrued liabilities	13,118	10,094	5,117	-16,930
CASH PROVIDED BY OPERATING ACTIVITIES	30,490	63,338	20,864	76,272
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'	'
Capital expenditures	-15,356	-27,201	-27,292	-40,028
Payments to Acquire Mineral Rights	-2,250	-101,648	-2,250	-113,214
Purchase of short term investments and marketable securities	-2,139	-683	-48,360	-5,332
Payments for (Proceeds from) Investments	800	1,522	890	6,344
Other	12	254	-13	1,209
CASH USED IN INVESTING ACTIVITIES	-18,933	-127,756	-77,025	-151,021
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'
Issuance of notes and bank borrowings	0	0	153,000	300,000
Payments on long-term debt, capital leases, and associated costs	-2,851	-1,857	-6,962	-57,197
Payments on gold production royalty	-12,345	-15,480	-27,028	-30,929
Payments for Repurchase of Common Stock	0	0	0	-12,557
Other	-160	-25	-406	-477
CASH USED IN FINANCING ACTIVITIES:	-15,356	-17,362	118,604	198,840
INCREASE IN CASH AND CASH EQUIVALENTS	-3,799	-81,780	62,443	124,091
Cash and cash equivalents at beginning of period	272,932	331,311	206,690	125,440
Cash and cash equivalents at end of period	$269,133	$249,531	$269,133	$249,531

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS	'	'
Cash and cash equivalents	$269,133	$206,690
Investments	47,642	0
Receivables	68,693	81,074
Ore on leach pads	44,964	50,495
Inventory	137,644	132,023
Deferred tax assets	35,079	35,008
Prepaid expenses and other	23,593	25,940
Assets, Current	626,748	531,230
NON-CURRENT ASSETS	'	'
Property, plant and equipment, net	482,787	486,273
Mining properties, net	1,728,667	1,751,501
Ore on Leach Pad Non Current	46,956	31,528
Restricted assets	7,510	7,014
Marketable securities	13,761	14,521
Receivables	38,424	36,574
Debt issuance costs, net	11,031	10,812
Deferred tax assets	808	1,189
Other	10,830	15,336
TOTAL ASSETS	2,967,522	2,885,978
CURRENT LIABILITIES	'	'
Accounts payable	49,651	53,847
Accrued liabilities and other	40,632	38,266
Debt	11,565	2,505
Royalty obligations	51,087	48,019
Reclamation	752	913
Deferred tax liabilities	1,858	1,011
Current liabilities	155,545	144,561
NON-CURRENT LIABILITIES	'	'
Debt	468,570	306,130
Royalty obligations	58,505	65,142
Reclamation	59,757	57,515
Deferred tax liabilities	540,232	556,246
Other long-term liabilities	28,280	25,817
Non-current liabilities	1,155,344	1,010,850
SHAREHOLDERS' EQUITY	'	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	1,034	1,028
Additional paid-in capital	2,785,761	2,781,164
Accumulated other comprehensive loss	-3,131	-4,906
Accumulated deficit	-1,127,031	-1,046,719
Shareholders' Equity	1,656,633	1,730,567
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$2,967,522	$2,885,978

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
SHAREHOLDERS' EQUITY	'	'
Common stock, par value	$0.01	$0.01
Common stock, share authorized	150,000,000	150,000,000
Common stock, share issued	103,485,960	102,843,003

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
In Thousands, unless otherwise specified
Balances at Dec. 31, 2013	$1,730,567	$1,028	$2,781,164	($1,046,719)	($4,906)
Balances, in shares at Dec. 31, 2013	'	102,843	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'
Net income (loss)	-80,312	0	0	-80,312	0
Other comprehensive loss	1,775	0	0	0	1,775
Common stock issued/cancelled under long-term incentive plans and director fees and options, net	4,603	6	4,597	0	0
Common stock issued/cancelled under long-term incentive plans and director fees and options, net, in shares	'	643	'	'	'
Balances at Jun. 30, 2014	$1,656,633	$1,034	$2,785,761	($1,127,031)	($3,131)
Balances, in shares at Jun. 30, 2014	'	103,486	'	'	'

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2014
Basis of Presentation [Abstract]	'
BASIS OF PRESENTATION	'
	BASIS OF PRESENTATION
	The interim condensed consolidated financial statements of Coeur Mining, Inc. (collectively "Coeur" or "the Company") are unaudited. In the opinion of management, all adjustments and disclosures necessary for the fair presentation of these interim statements have been included. The results reported in these interim statements may not be indicative of the results reported for the year ending December 31, 2014. The condensed consolidated December 31, 2013 balance sheet data was derived from the audited consolidated financial statements. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements for the year ended December 31, 2013 included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2013 (the "2013 10-K").

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Recent Accounting Standards
	On January 1, 2014, the Company adopted ASU 2013-11, "Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists." The updated guidance requires an entity to net its unrecognized tax benefits against the deferred tax assets for all same jurisdiction net operating loss carryforwards, a similar tax loss, or tax credit carryforwards. A gross presentation will be required only if such carryforwards are not available or would not be used by the entity to settle any additional income taxes resulting from disallowance of the uncertain tax provision. The Company's adoption had no impact on the Company's consolidated financial position, results of operations, or cash flows.
	In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers." The updated guidance provides a five-step approach to be applied to all contracts with customers and also requires expanded disclosures about revenue recognition. These changes become effective prospectively for the Company's fiscal year beginning January 1, 2017. The Company is currently evaluating the potential impact of these changes on the Company's consolidated financial position, results of operations, and cash flows.

Segment_Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
SEGMENT REPORTING	'
	SEGMENT REPORTING
	The Company’s operating segments include the Palmarejo, San Bartolomé, Rochester, and Kensington mines, the La Preciosa project, and Coeur Capital. All operating segments are engaged in the discovery and mining of gold and silver and generate the majority of their revenues from the sale of these precious metals with the exception of Coeur Capital, which holds the Endeavor silver stream and other precious metals royalties. Other includes the Joaquin project, Martha mine, corporate headquarters, elimination of intersegment transactions, and other items necessary to reconcile to consolidated amounts.
	Financial information relating to the Company’s segments is as follows (in thousands):
	Three months ended June 30, 2014	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
		Mine			Mine			Mine			Mine
	Revenue
	Metal sales	$	72,446		$	29,078		$	29,018		$	31,193		$	—		$	1,971		$	—		$	163,706
	Royalties	—			—			—			—			—			856			—			856
		72,446			29,078			29,018			31,193			—			2,827			—			164,562
	Costs and Expenses
	Costs applicable to sales(1)	49,551			20,695			23,218			24,381			—			842			—			118,687
	Amortization	18,044			4,855			11,566			5,025			22			1,419			491			41,422
	Exploration	1,637			57			1,636			738			26			109			950			5,153
	Other operating expenses	325			194			199			844			5,711			263			10,622			18,158
	Other income (expense)
	Interest income and other, net	(1,202		)	691			4			32			118			(964		)	271			(1,050		)
	Interest expense, net	(2,771		)	(11		)	(53		)	(261		)	—			—			(9,214		)	(12,310		)
	Fair value adjustments, net	(4,989		)	—			—			(1,837		)	—			—			(1,456		)	(8,282		)
	Income and mining tax (expense) benefit	1,342			(2,204		)	—			(419		)	(1,159		)	263			(444		)	(2,621		)
	Net income (loss)	$	(4,731	)	$	1,753		$	(7,650	)	$	(2,280	)	$	(6,800	)	$	(507	)	$	(22,906	)	$	(43,121	)
	Segment assets(2)	$	1,133,851		$	309,565		$	331,151		$	206,665		$	412,226		$	67,864		$	110,406		$	2,571,728
	Capital expenditures	$	5,589		$	1,711		$	3,989		$	3,956		$	3		$	—		$	108		$	15,356
	(1)    Excludes amortization
	(2)     Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests
	Three months ended June 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
		Mine			Mine			Mine			Mine
	Revenue
	Metal sales	$	86,217		$	49,236		$	30,851		$	34,903		$	—		$	3,479		$	(161	)	$	204,525
	Royalties	—			—			—			—			—			—			—			—
		$	86,217		$	49,236		$	30,851		$	34,903		$	—		$	3,479		$	(161	)	$	204,525
	Costs and Expenses
	Costs applicable to sales(1)	55,218			32,815			30,154			22,516			—			1,683			—			142,386
	Amortization	35,384			4,824			13,159			1,989			2			1,224			312			56,894
	Exploration	3,189			27			563			512			690			322			1,471			6,774
	Litigation settlement	—			—			—			32,046			—			—			—			32,046
	Other operating expenses	173			117			236			2,466			—			(191		)	14,042			16,843
	Other income (expense)
	Interest income and other, net	(428		)	683			150			—			(11		)	91			(17,258		)	(16,773		)
	Interest expense, net	(4,190		)	(14		)	(95		)	(5		)	—			—			(6,626		)	(10,930		)
	Fair value adjustments, net	61,066			—			6,350			—			—			—			(662		)	66,754
	Income and mining tax (expense) benefit	(17,282		)	(4,506		)	—			(538		)	—			(191		)	(1,156		)	(23,673		)
	Net income (loss)	$	31,419		$	7,616		$	(6,856	)	$	(25,169	)	$	(703	)	$	341		$	(41,688	)	$	(35,040	)
	Segment assets(2)	$	1,860,240		$	286,325		$	485,215		$	122,917		$	409,458		$	31,493		$	108,954		$	3,304,602
	Capital expenditures	$	9,166		$	3,159		$	7,406		$	6,596		$	735		$	—		$	139		$	27,201
	(1)    Excludes amortization
	(2)     Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests
	Six months ended June 30, 2014	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
		Mine			Mine			Mine			Mine
	Revenue
	Metal sales	$	140,434		$	56,632		$	65,079		$	55,347		$	—		$	4,860		$	—		$	322,352
	Royalties	—			—			—			—			—			1,843			—			1,843
		140,434			56,632			65,079			55,347			—			6,703			—			324,195
	Costs and Expenses
	Costs applicable to sales(1)	93,126			39,595			51,749			39,089			—			2,024			—			225,583
	Amortization	36,702			9,313			22,275			9,476			41			3,121			921			81,849
	Exploration	2,642			82			2,680			1,912			210			312			1,532			9,370
	Other operating expenses	622			335			390			2,189			10,668			504			24,361			39,069
	Other income (expense)
	Interest income and other, net	(2,772		)	1,373			4			51			(17		)	(3,512		)	(749		)	(5,622		)
	Interest expense, net	(5,595		)	(31		)	(75		)	(266		)	—			—			(19,398		)	(25,365		)
	Fair value adjustments, net	(15,225		)	—			—			(2,510		)	—			—			(1,982		)	(19,717		)
	Income and mining tax (expense) benefit	5,171			(4,969		)	—			(419		)	(1,271		)	(25		)	3,581			2,068
	Net income (loss)	$	(11,079	)	$	3,680		$	(12,086	)	$	(463	)	$	(12,207	)	$	(2,795	)	$	(45,362	)	$	(80,312	)
Segment assets(2)	$	1,133,851		$	309,565		$	331,151		$	206,665		$	412,226		$	67,864		$	110,406		$	2,571,728
Capital expenditures	$	9,331		$	3,152		$	8,700		$	4,915		$	141		$	—		$	1,053		$	27,292
(1)    Excludes amortization
(2)     Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests
Six months ended June 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
	Mine			Mine			Mine			Mine
Revenue
Metal sales	$	143,643		$	82,377		$	70,126		$	74,377		$	—		$	6,461		$	(662	)	$	376,322
Royalties	—			—			—			—			—			—			—			—
	143,643			82,377			70,126			74,377			—			6,461			(662		)	376,322
Costs and Expenses
Costs applicable to sales(1)	81,937			48,494			53,718			43,293			—			3,002			—			230,444
Amortization	64,166			9,464			26,445			3,842			2			2,052			618			106,589
Exploration	5,170			79			1,235			996			690			630			4,815			13,615
Litigation	—			—			—			32,046			—			—			—			32,046
Other operating expenses	341			3,954			412			2,938			—			(245		)	25,016			32,416
Other income (expense)
Interest income and other, net	1,514			1,288			281			57			(11		)	138			(16,219		)	(12,952		)
Interest expense, net	(7,928		)	(46		)	(354		)	(11		)	—			—			(12,323		)	(20,662		)
Fair value adjustments, net	75,494			—			10,577			—			—			—			(1,521		)	84,550
Income and mining tax (expense) benefit	(20,816		)	(8,834		)	(1		)	(1,264		)	—			(245		)	(3,758		)	(34,918		)
Net income (loss)	$	40,293		$	12,794		$	(1,181	)	$	(9,956	)	$	(703	)	$	915		$	(64,932	)	$	(22,770	)
Segment assets(2)	$	1,860,240		$	286,325		$	485,215		$	122,917		$	409,458		$	31,493		$	108,954		$	3,304,602
Capital expenditures	$	14,480		$	3,616		$	10,736		$	9,894		$	735		$	—		$	567		$	40,028
(1)    Excludes amortization
(2)     Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests
(in thousands)	June 30, 2014			December 31, 2013
Assets
Total assets for reportable segments	$	2,571,728		$	2,595,408
Cash and cash equivalents	269,133			206,690
Short term investments	47,642			—
Other assets	79,019			83,880
Total consolidated assets	$	2,967,522		$	2,885,978
Geographic Information
(in thousands)	June 30, 2014			December 31, 2013
Long Lived Assets
United States	$	387,617		$	384,626
Australia	23,858			25,668
Argentina	94,495			94,705
Bolivia	228,606			235,085
Mexico	1,461,228			1,487,228
Other Foreign Countries	15,650			10,462
Total	$	2,211,454		$	2,237,774
	Three months ended June 30,						Six months ended June 30,
(in thousands)	2014			2013			2014			2013
Revenue
United States	$	60,212		$	65,754		$	120,427		$	144,502
Mexico	72,657			86,217			141,167			143,643
Bolivia	29,078			49,236			56,632			82,377
Australia	1,971			3,479			4,860			6,462
Other	644			(161		)	$	1,109		$	(662	)
Total	$	164,562		$	204,525		$	324,195		$	376,322

Reclamation

Reclamation	6 Months Ended
	Jun. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
RECLAMATION AND MINE CLOSURE	'
	RECLAMATION
	Reclamation and mine closure costs are based principally on legal and regulatory requirements. Management estimates costs associated with reclamation of mining properties as well as remediation costs for inactive properties. The Company uses assumptions about future costs, mineral prices, mineral processing recovery rates, production levels, capital costs and reclamation costs. On an ongoing basis, management evaluates its estimates and assumptions, and future expenditures could differ from current estimates.
	Changes to the Company’s asset retirement obligations are as follows (in thousands):
		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
	Asset retirement obligation - Beginning	$	58,460		$	35,197		$	57,454		$	34,457
	Accretion	1,435			758			2,752			1,500
	Settlements	(100		)	(377		)	(411		)	(379		)
	Asset retirement obligation - Ending	$	59,795		$	35,578		$	59,795		$	35,578
	The Company has accrued $0.7 million and $1.0 million at June 30, 2014 and December 31, 2013, respectively, for reclamation liabilities related to former mining activities. These amounts are also included in Reclamation.

StockBased_Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
STOCK-BASED COMPENSATION PLANS	'
	STOCK-BASED COMPENSATION
	The Company has stock incentive plans for executives and eligible employees. Stock awards include stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, and performance share units. Stock-based compensation expense for the three months ended June 30, 2014 and 2013 was $2.4 million and $1.6 million, respectively. Stock-based compensation expense for the six months ended June 30, 2014 and 2013 was $5.0 million and $2.7 million, respectively. At June 30, 2014, there was $11.8 million of unrecognized stock-based compensation cost which is expected to be recognized over a period of 1.8 years.
	The following table summarizes the grants awarded during the six months ended June 30, 2014:
	Grant date	Restricted	Grant date fair		Stock options	Grant date		Performance	Grant date fair
		stock	value of			fair value of		shares	value of
			restricted stock			stock			performance
						options			shares
	17-Jan-14	243,351	$	11.12	32,417	$	4.39	345,833	$	12.65
	26-Mar-14	435,208	$	9.31	382,755	$	3.74	—	$	—
	The following options and stock appreciation rights were exercised during the six months ended June 30, 2014:
	Award Type	Number of	Weighted Average		Number of Exercisable Units	Weighted Average
		Exercised Units	Exercised Price			Exercisable Price
	Options	—	$	—	256,927	$	28.91
	Stock Appreciation Rights	—	$	—	50,209	$	14.15

Retirement_Savings_Plan

Retirement Savings Plan	6 Months Ended
	Jun. 30, 2014
Postemployment Benefits [Abstract]	'
RETIREMENT SAVINGS PLAN	'
	RETIREMENT SAVINGS PLAN
	The Company maintains a retirement savings plan (which qualifies under Section 401(k) of the U.S. Internal Revenue Code) covering all eligible U.S. employees. Under the plan, employees may elect to contribute up to 75% of base salary, subject to ERISA limitations. The Company maintains a Safe Harbor Match and is required to make matching contributions equal to 100% of the employee’s contribution up to 4% of each employee’s salary. In addition, the Company provides a noncontributory defined contribution based on a percentage of each eligible employee's salary. Total plan expenses recognized for the three and six months ended June 30, 2014 and 2013 were $1.6 million and $0.8 million, and $3.0 million and $2.1 million, respectively.

Income_and_Mining_Taxes

Income and Mining Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME AND MINING TAXES
	The following table summarizes the components of the Company's income and mining tax (expense) benefit for the three and six months ended June 30, 2014 and 2013 by significant location:
		Three months ended June 30,												Six months ended June 30,
		2014						2013						2014						2013
	(in thousands)	Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit
	United States	$	(31,370	)	$	(146	)	$	(67,824	)	$	(1,329	)	$	(60,214	)	$	(292	)	$	(61,896	)	$	(4,541	)
	Argentina	(688		)	(349		)	(2,989		)	(117		)	(2,892		)	4,083			(6,981		)	(44		)
	Mexico	(12,710		)	107			47,214			(15,798		)	(28,716		)	3,828			58,756			(19,471		)
	Bolivia	3,957			(2,205		)	12,122			(4,556		)	8,649			(4,969		)	21,628			(8,884		)
	Other jurisdictions	311			(28		)	110			(1,873		)	793			(582		)	641			(1,978		)
		$	(40,500	)	$	(2,621	)	$	(11,367	)	$	(23,673	)	$	(82,380	)	$	2,068		$	12,148		$	(34,918	)
	The income tax provision for the three and six months ended June 30, 2014 differs from the statutory rate primarily due to (i) a full valuation allowance against the deferred tax assets relating to losses incurred in the United States and certain foreign locations, (ii) the impact of foreign exchange adjustments on deferred tax account balances, reserves for uncertain tax positions, and foreign earnings not considered as permanently reinvested with respect to certain foreign locations, and (iii) differences in foreign tax rates in the Company's foreign locations. In conjunction with these items, the Company's consolidated effective income tax rate is a function of the combined effective tax rates in the jurisdictions in which it operates. Variations in the relative proportions of jurisdictional income and loss result in significant fluctuations in its consolidated effective tax rate.
	The Company has U.S. net operating loss carryforwards which expire in 2019 through 2033. Net operating losses in foreign countries have an indefinite carryforward period, except in Mexico where net operating loss carryforwards are limited to ten years.

Net_Income_Loss_Per_Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
NET INCOME (LOSS) PER SHARE	'
	NET INCOME (LOSS) PER SHARE
	Basic income (loss) per share is computed by dividing net income (loss) available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share reflects the potential dilution that would occur if securities or other contracts to issue common stock were exercised or converted into common stock.
	For the three months ended June 30, 2014, 2,147,989 shares of common stock equivalents related to equity-based awards were not included in the diluted per share calculation due to the net loss incurred. For the three months ended June 30, 2013, 1,202,100 shares of common stock equivalents related to equity-based awards were not included in the diluted per share calculation as the shares would be antidilutive.
	For the six months ended June 30, 2014, 2,147,390 shares of common stock equivalents related to equity-based awards were not included in the diluted per share calculation due to the net loss incurred. For the six months ended June 30, 2013, 1,202,100 shares of common stock equivalents related to equity-based awards were not included in the diluted per share calculation as the shares would be antidilutive.
	The 3.25% Convertible Senior Notes were not included in the computation of diluted net income (loss) per share for the three and six months ended June 30, 2014 and 2013 because there is no excess value upon conversion over the principal amount of the Notes.
		Three months ended June 30,						Six months ended June 30,
	In thousands except per share amounts	2014			2013			2014			2013
	Net income (loss) available to common stockholders	$	(43,121	)	$	(35,040	)	$	(80,312	)	$	(22,770	)
	Weighted average shares:
	Basic	102,444			99,833			102,405			94,918
	Effect of share based compensation plans	—			—			—			—
	Diluted	102,444			99,833			102,405			94,918
	Income (loss) per share:
	Basic	$	(0.42	)	$	(0.35	)	$	(0.78	)	$	(0.24	)
	Diluted	$	(0.42	)	$	(0.35	)	$	(0.78	)	$	(0.24	)

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	FAIR VALUE MEASUREMENTS
	The following table presents the components of Fair value adjustments, net (in thousands):
			Three months ended March 31,								Six months ended June 30,
			2014				2013				2014				2013
	Palmarejo royalty obligation embedded derivative		$	(5,061	)		$	61,066			$	(15,296	)		$	75,495
	Rochester net smelter royalty obligation		(1,837		)		—				(2,510		)		—
	Silver and gold options		(1,374		)		6,350				(2,868		)		10,577
	Foreign exchange contracts		(10		)		(662		)		957				(1,522		)
	Fair value adjustments, net		$	(8,282	)		$	66,754			$	(19,717	)		$	84,550
	Accounting standards establish a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:
	Level 1	Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2	Quoted market prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and
	Level 3	Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).
	The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):
		Fair Value at June 30, 2014
		Total				Level 1				Level 2				Level 3
	Assets:
	Short-term investments	$	47,642			$	47,642			$	—			$	—
	Marketable equity securities	13,761				13,761				—				—
	Silver and gold options	1,298				—				1,298				—
	Other derivative instruments, net	240				—				240				—
		$	62,941			$	61,403			$	1,538			$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	43,960			$	—			$	—			$	43,960
	Rochester net smelter royalty obligation	23,656				—				—				23,656
	Silver and gold options	291				—				291				—
		$	67,907			$	—			$	291			$	67,616
		Fair Value at December 31, 2013
		Total				Level 1				Level 2				Level 3
	Assets:
	Marketable equity securities	$	14,521			$	14,521			$	—			$	—
	Silver and gold options	135				—				135				—
		$	14,656			$	14,521			$	135			$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	40,338			$	—			$	—			$	40,338
	Rochester net smelter royalty obligation	21,630				—				—				21,630
	Other derivative instruments, net	1,591				—				1,591				—
		$	63,559			$	—			$	1,591			$	61,968
	The Company’s short-term investments are readily convertible to cash. The Company’s investments in marketable equity securities are recorded at fair market value in the financial statements based on quoted market prices, which are accessible at the measurement date for identical assets. Such instruments are classified within Level 1 of the fair value hierarchy.
	The Company’s silver and gold options and other derivative instruments, net, which relate to concentrate sales contracts and foreign exchange contracts, are valued using pricing models, which require inputs that are derived from observable market data, including contractual terms, forward market prices, yield curves and credit spreads. The model inputs can generally be verified and do not involve significant management judgment. Such instruments are classified within Level 2 of the fair value hierarchy.
	The estimated fair value of the Palmarejo royalty obligation embedded derivative and Rochester net smelter royalty obligation was estimated based on observable market data including contractual terms, forward silver and gold prices, yield curves and credit spreads.  The Company’s current mine plans are a significant input used in the estimated fair value of the Palmarejo royalty obligation embedded derivative and Rochester net smelter royalty obligation and is considered company specific and unobservable.  Therefore, the Company has classified the Palmarejo royalty obligation embedded derivative and Rochester net smelter royalty obligation as Level 3 financial liabilities. Based on the current mine plans, expected royalty durations of 2.0 years and 4.6 years were used to estimate the fair value of the Palmarejo royalty obligation embedded derivative and Rochester net smelter royalty obligation, respectively, at June 30, 2014.
	No assets or liabilities were transferred between fair value levels in the three and six months ended June 30, 2014.
	The following tables present the changes in the fair value of the Company's Level 3 financial liabilities for the three and six months ended June 30, 2014 (in thousands):
		Three months ended June 30, 2014
		Balance at the beginning of the period				Revaluation				Settlements				Balance at the end of the period
	Palmarejo royalty obligation embedded derivative	$	44,357			$	5,061			$	(5,458	)		$	43,960
	Rochester net smelter royalty obligation	22,303				1,837				(484		)		23,656
		Six months ended June 30, 2014
		Balance at the beginning of the period				Revaluation				Settlements				Balance at the end of the period
	Palmarejo royalty obligation embedded derivative	$	40,338			$	15,296			$	(11,674	)		$	43,960
	Rochester net smelter royalty obligation	21,630				2,510				(484		)		23,656
	The fair value of financial assets and liabilities measured at book value in the financial statements at June 30, 2014 and December 31, 2013 is presented in the following table (in thousands):
		30-Jun-14
		Book Value				Fair Value				Level 1				Level 2				Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,334			$	5,047			$	—			$	5,047			$	—
	7.875% Senior Notes due 2021	452,855				455,625				—				455,625				—
	Palmarejo Gold Production Royalty Obligation	41,976				51,252				—				—				51,252
		31-Dec-13
		Book Value				Fair Value				Level 1				Level 2				Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,334			$	5,067			$	5,067			$	—			$	—
	7.875% Senior Notes due 2021	300,000				307,314				307,314				—				—
Palmarejo Gold Production Royalty Obligation	51,193				65,212				—				—				65,212
The fair value at June 30, 2014 and December 31, 2013 of the 3.25% Convertible Senior Notes and 7.875% Senior Notes outstanding were estimated using quoted market prices. The fair value of debt was transferred to Level 2 from Level 1 of the fair value hierarchy at March 31, 2014 due to observability of quoted market prices.
The fair value of the Palmarejo gold production royalty obligation is estimated based on observable market data including contractual terms, forward silver and gold prices, yield curves and credit spreads.  The Company’s current mine plan is a significant input used in the estimated fair value of the Palmarejo gold production royalty obligation and is considered company specific and unobservable.  Therefore, the Company has classified the Palmarejo gold production royalty obligation as Level 3 financial liabilities. Based on the current mine plan, an expected royalty duration of 2.0 years was used to estimate the fair value of the Palmarejo gold production royalty obligation as of June 30, 2014.

Derivative_Financial_Instrumen

Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
DERIVATIVE FINANCIAL INSTRUMENTS	'
	DERIVATIVE FINANCIAL INSTRUMENTS
	Palmarejo Gold Production Royalty
	On January 21, 2009, the Company's subsidiary, Coeur Mexicana S.A. de C.V. ("Coeur Mexicana") entered into a gold production royalty transaction with a subsidiary of Franco-Nevada Corporation. The royalty covers 50% of the life of mine production from the Palmarejo mine and adjacent properties. The royalty transaction includes a minimum obligation of 4,167 ounces per month that ends when payments have been made on a total of 400,000 ounces of gold. At June 30, 2014, a total of 110,240 ounces of gold remain outstanding under the minimum royalty obligation.
	The price volatility associated with the minimum royalty obligation is considered an embedded derivative. The Company is required to recognize the change in fair value of the remaining minimum obligation due to changing gold prices. Unrealized gains are recognized in periods when the gold price has decreased from the previous period and unrealized losses are recognized in periods when the gold price increases. The fair value of the embedded derivative is reflected net of the Company's current credit adjusted risk free rate, which was 6.1% and 4.2% at June 30, 2014 and December 31, 2013, respectively. The fair value of the embedded derivative at June 30, 2014 and December 31, 2013 was a liability of $44.0 million and $40.3 million, respectively. For the three months ended June 30, 2014 and 2013, the mark-to-market adjustments were losses of $5.1 million and gains of $61.1 million, respectively. For the six months ended June 30, 2014 and 2013, the mark-to-market adjustments were losses of $15.3 million and gains of $75.5 million, respectively.
	Payments on the royalty obligation decrease the carrying amount of the minimum obligation and the derivative liability. Each monthly payment is an amount equal to the greater of the minimum of 4,167 ounces of gold or 50% of the actual gold production per month multiplied by the excess of the monthly average market price of gold above $408 per ounce, subject to a 1% annual inflation adjustment. For the three months ended June 30, 2014 and 2013, realized losses on settlement of the liabilities were $5.5 million and $8.1 million, respectively. For the six months ended June 30, 2014 and 2013, realized losses on settlement of the liabilities were $11.7 million and $17.2 million, respectively. The mark-to-market adjustments and realized losses are included in Fair value adjustments, net.
	Foreign Exchange Contracts
	The Company periodically enters into foreign currency derivative contracts to reduce the foreign exchange risk associated with Mexican peso (“MXN”) operating costs at its Palmarejo mine. At June 30, 2014, the Company had outstanding call and put option contracts, or collars, on $23.0 million with a weighted-average strike price of 12.60 MXN for the floor and 14.97 MXN for the ceiling. The fair value of these contracts was nil at June 30, 2014. At December 31, 2013, the Company had MXN foreign exchange forward contracts on $12.0 million in U.S. dollars. These contracts required the Company to exchange U.S. dollars for MXN at a weighted average exchange rate of 12.21 MXN to each U.S. dollar and the fair value of those contracts was a liability of $0.9 million at December 31, 2013. In addition, at December 31, 2013, the Company had outstanding collars on $45.0 million with a weighted-average strike price of 12.60 MXN for the floor and 14.80 MXN for the ceiling. The fair value of these contracts was nil at December 31, 2013.
	The Company recorded no mark-to-market adjustments for the three months ended June 30, 2014 and mark-to-market losses of $0.7 million for the three months ended June 30, 2013 on the MXN forward contracts and collars. For the six months ended June 30, 2014 and 2013, the Company recorded mark-to-market gains of $1.0 million and losses of $1.5 million, respectively, on MXN forward contracts and collars. These mark-to-market adjustments are reflected in Fair value adjustments, net.
	The Company recorded no realized gains or losses and realized gains of $0.2 million in Costs applicable to sales during the three months ended June 30, 2014 and 2013, respectively. For the six months ended June 30, 2014 and 2013, the Company recorded realized losses of $0.9 million and realized gains of $0.8 million in Costs applicable to sales.
	Concentrate Sales Contracts
	The Company's concentrate sales to third-party smelters, in general, provide for a provisional payment based upon preliminary assays and forward metal prices. The provisionally priced sales contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of concentrates at the forward price at the time of sale. The embedded derivatives do not qualify for hedge accounting and are marked to market through earnings each period until final settlement. Changes in silver and gold prices resulted in no provisional pricing mark-to-market adjustments in the three months ended June 30, 2014 and mark-to-market gains of $0.9 million in the six months ended June 30, 2014, compared to mark-to-market losses of $0.7 million and $2.4 million in the three and six months ended June 30, 2013. At June 30, 2014, the Company had outstanding provisionally priced sales of 0.2 million ounces of silver and 11,559 ounces of gold at prices of $19.99 and $1,286, respectively.
	Silver and Gold Options
	At June 30, 2014, the Company has outstanding put spread contracts on 3,750,000 ounces of silver and 74,000 ounces of gold. The weighted average high and low strike prices on the silver put spreads are $18.00 per ounce and $16.00 per ounce, respectively. The weighted average high and low strike prices on the gold put spreads are $1,200 and $1,050, respectively.
	If the market price of silver and gold were to average less than the high strike price but more than the low strike price during the contract period, the Company would receive the difference between the average market price and the high strike price for the contracted volume over the contract period. If the market price of silver and gold were to average less than the low strike price during the contract period, the Company would receive the difference between the average market price and the high strike price for the contracted volume over the contract period, and the Company would be required to pay the difference between the average market price and the low strike price for the contracted volume over the contract period.
	The put spread contracts are generally net cash settled and expire during the remainder of 2014 and the first quarter of 2015. At June 30, 2014, the fair market value of the put spreads was a net asset of $1.0 million.
	At December 31, 2013, the Company had outstanding put options allowing it to net settle 25,000 ounces of gold and 1,250,000 ounces of silver at weighted average prices of $1,150 per ounce and $17.00 per ounce, respectively, if the market price of gold or silver were to average less than the strike price during the contract period. At December 31, 2013, the fair market value of these contracts was a net asset of $0.1 million.
	During the three months ended June 30, 2014 and 2013, the Company recorded unrealized losses of $1.4 million and unrealized gains of $6.4 million, respectively, related to outstanding options which was included in Fair value adjustments, net. The Company also recognized a realized loss of $0.7 million and $0.2 million resulting from expiring contracts during the three months ended June 30, 2014 and 2013, respectively.
	During the six months ended June 30, 2014 and 2013, the Company recorded unrealized losses of $2.9 million and unrealized gains of $10.6 million, respectively, related to outstanding options which was included in Fair value adjustments, net. The Company also recognized a realized loss of $0.4 million and a realized loss of $1.1 million resulting from expiring contracts during the six months ended June 30, 2014 and 2013, respectively.
	At June 30, 2014, the Company had the following derivative instruments that settle in each of the years indicated (in thousands except average prices and notional ounces):
		2014				2015				2016				Thereafter
	Palmarejo gold production royalty	$	27,334			$	46,078			$	27,741			$	—
	Average gold price in excess of minimum contractual deduction	$	913			$	919			$	920			$	—
	Notional ounces	29,920				50,153				30,168				—
	Mexican peso put options purchased	$	23,000			$	—			$	—			$	—
	Average rate (MXN/$)	14.97				—				—				—
	Mexican peso notional amount	344,310				—				—				—
	Mexican peso call options sold	$	23,000			$	—			$	—			$	—
	Average rate (MXN/$)	12.6				—				—				—
	Mexican peso notional amount	289,800				—				—				—
	Silver concentrate sales contracts	$	3,253			$	—			$	—			$	—
	Average silver price	$	19.99			$	—			$	—			$	—
	Notional ounces	162,724				—				—				—
	Gold concentrate sales contracts	$	14,865			$	—			$	—			$	—
	Average gold price	$	1,286			$	—			$	—			$	—
	Notional ounces	11,559				—				—				—
	Gold put options purchased	$	60,000			$	28,800			$	—			$	—
	Average gold strike price	$	1,200			$	1,200			$	—			$	—
	Notional ounces	50,000				24,000				—				—
	Silver put options purchased	$	45,000			$	22,500			$	—			$	—
	Average silver strike price	$	18			$	18			$	—			$	—
	Notional ounces	2,500,000				1,250,000				—				—
	Gold put options sold	$	(52,500	)		$	(25,200	)		$	—			$	—
	Average gold strike price	$	1,050			$	1,050			$	—			$	—
	Notional ounces	50,000				24,000				—				—
	Silver put options sold	$	(40,000	)		$	(20,000	)		$	—			$	—
	Average silver strike price	$	16			$	16			$	—			$	—
	Notional ounces	2,500,000				1,250,000				—				—
	The following summarizes the classification of the fair value of the derivative instruments (in thousands):
		June 30, 2014
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
	Foreign exchange contracts, peso	$	49			$	—			$	—			$	—
	Palmarejo gold production royalty	—				—				22,393				21,567
	Silver and gold options	1,298				291				—				—
	Concentrate sales contracts	192				1				—				—
		$	1,539			$	292			$	22,393			$	21,567
		December 31, 2013
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
Foreign exchange contracts, peso	$	38			$	947			$	—			$	—
Palmarejo gold production royalty	—				—				17,650				22,688
Silver and gold options	135				—				—				—
Concentrate sales contracts	11				693				—				—
	$	184			$	1,640			$	17,650			$	22,688
The following represent mark-to-market gains (losses) on derivative instruments for the three and six months ended June 30, 2014, and 2013 (in thousands):
			Three months ended June 30,								Six months ended June 30,
Financial statement line	Derivative		2014				2013				2014				2013
Sales of metal	Concentrate sales contracts		$	7			$	(667	)		$	872			$	(2,422	)
Costs applicable to sales	Foreign exchange contracts		—				203				(924		)		830
Fair value adjustments, net	Foreign exchange contracts (MXN)		(10		)		(2,260		)		957				(1,522		)
Fair value adjustments, net	Foreign exchange contracts (CDN)		—				1,598				—				—
Fair value adjustments, net	Palmarejo gold royalty		(5,061		)		61,066				(15,296		)		75,495
Fair value adjustments, net	Silver and gold options		(1,374		)		6,350				(2,868		)		10,577
			$	(6,438	)		$	66,290			$	(17,259	)		$	82,958
Credit Risk
The credit risk exposure related to any derivative instrument is limited to the unrealized gains, if any, on outstanding contracts based on current market prices. To reduce counter-party credit exposure, the Company enters into contracts with financial institutions management deems credit worthy and limits credit exposure to each institution. The Company does not anticipate non-performance by any of its counterparties. In addition, to allow for situations where derivative positions may need to be revised, the Company transacts only in markets that management considers highly liquid.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	ACQUISITIONS
	On May 27, 2014, the Company's subsidiary Coeur Capital Inc. entered into a net smelter royalty agreement with International Northair Mines, Ltd. ("Northair"). Pursuant to the agreement, Coeur Capital, Inc. paid $2.2 million cash for a 1.25% net smelter royalty and, subject to satisfaction of certain conditions by Northair, will pay an additional $1.8 million on September 2, 2014 for an additional 1.25% net smelter royalty payable on future production from the La Cigarra silver project located in north central Mexico.
	On April 16, 2013, the Company completed its acquisition of Orko Silver Corporation (“Orko”). Upon completion of the acquisition, the Company holds the La Preciosa silver-gold project in the state of Durango, Mexico. The transaction was accounted for as a purchase of mineral interests since La Preciosa is a development stage project.
	Total consideration paid (in thousands):
	Common shares issued (11,572,918 at $14.98)	$	173,363
	Cash	99,059
	Warrants (1,588,768 valued at $3.64 per warrant)	5,777
	Transaction advisory fees and other acquisition costs	17,642
	Total purchase price	295,841
	Current liabilities	2,616
	Deferred income taxes	114,339
	Total liabilities assumed	116,955
	Total Consideration	$	412,796
	Estimated fair value of the assets acquired (in thousands):
	Cash	$	3,487
	Other current assets	635
	Mineral interests	408,352
	Other assets	322
	Total assets acquired	$	412,796

Investments

Investments	6 Months Ended
	Jun. 30, 2014
Investment in Marketable Securities [Abstract]	'
INVESTMENTS	'
	INVESTMENTS
	The Company invests part of its cash balances in a managed portfolio of liquid investments including highly-rated corporate bonds which are classified as short-term investments. The Company also invests in marketable equity securities of silver and gold exploration and development companies. These investments are classified as available-for-sale and are measured at fair value in the financial statements with unrealized gains and losses recorded in Other comprehensive income (loss).
	(in thousands)	At June 30, 2014
		Cost				Gross				Gross				Estimated
						Unrealized				Unrealized				Fair Value
						Losses				Gains
	Short-term investments	$	47,661			$	(31	)		$	12			$	47,642
	Marketable equity securities	13,972				(677		)		466				13,761
	(in thousands)	At December 31, 2013
		Cost				Gross				Gross				Estimated
						Unrealized				Unrealized				Fair Value
						Losses				Gains
	Marketable equity securities	$	17,649			$	(3,300	)		$	172			$	14,521
	The following table summarizes the gross unrealized losses on investment securities for which other-than-temporary impairments have not been recognized and the fair values of those securities, aggregated by the length of time the individual securities have been in a continuous unrealized loss position, at June 30, 2014 (in thousands):
		Less than twelve months							Twelve months or more							Total
		Unrealized Losses			Fair Value				Unrealized Losses			Fair Value				Unrealized Losses			Fair Value
	Short-term investments	$	(31	)	$	29,090			$	—		$	—			$	(31	)	$	29,090
	Marketable equity securities	$	—		$	—			$	(677	)	$	1,399			$	(677	)	$	1,399
	The Company recognized net of tax unrealized losses of $0.8 million and $7.5 million in the three months ended June 30, 2014 and 2013, respectively, and $0.4 million and $11.1 million in the six months ended June 30, 2014 and 2013, respectively, in Other comprehensive income (loss). The Company performs a quarterly assessment on each of its marketable securities with unrealized losses to determine if the security is other than temporarily impaired. The Company recorded other-than-temporary impairment losses of $0.9 million and $17.2 million in the three months ended June 30, 2014 and 2013, respectively, and $3.5 million and $17.2 million in the six months ended June 30, 2014 and 2013, respectively.

Receivables

Receivables	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
RECEIVABLES	'
	RECEIVABLES
	Receivables consist of the following (in thousands):
		June 30, 2014		December 31, 2013
	Receivables - current:
	Trade receivables	$	7,467	$	17,303
	Income tax receivable	7,845		6,240
	Value added tax receivable	47,340		49,168
	Other	6,041		8,363
		$	68,693	$	81,074
	Receivables - non-current:
	Value added tax receivable	$	38,424	$	36,574

Metal_and_Other_Inventory

Metal and Other Inventory	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
METAL AND OTHER INVENTORY	'
	INVENTORY AND ORE ON LEACH PADS
	Inventory consists of the following (in thousands):
	Inventory:	June 30, 2014		December 31, 2013
	Concentrate	$	19,151	$	14,855
	Precious metals	52,630		52,250
	Supplies	65,863		64,918
		$	137,644	$	132,023
	Ore on Leach Pads:
	Current	$	44,964	$	50,495
	Non-Current	46,956		31,528
		$	91,920	$	82,023
	Total Inventory and Ore on Leach Pads	$	229,564	$	214,046

Property_Plant_and_Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
PROPERTY, PLANT AND EQUIPMENT	'
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consist of the following (in thousands):
		June 30, 2014			December 31, 2013
	Land	$	1,764		$	1,764
	Facilities and equipment	872,575			855,318
	Capital leases	25,680			16,133
		900,019			873,215
	Accumulated amortization	(429,904		)	(395,520		)
		470,115			477,695
	Construction in progress	12,672			8,578
	Property, plant and equipment, net	$	482,787		$	486,273

Mining_Properties

Mining Properties	6 Months Ended
	Jun. 30, 2014
Mining Properties [Abstract]	'
MINING PROPERTIES	'
	MINING PROPERTIES
	Mining properties consist of the following (in thousands):
	June 30, 2014	Palmarejo			San			Kensington			Rochester			La Preciosa		Joaquin		Coeur Capital			Total
					Bartolomé
	Mine development	$	158,631		$	70,764		$	275,660		$	152,443		$	—	$	—	$	—		$	657,498
	Accumulated amortization	(116,097		)	(24,091		)	(92,162		)	(108,109		)	—		—		—			(340,459		)
		42,534			46,673			183,498			44,334			—		—		—			317,039
	Mineral interests	1,146,572			26,643			—			—			408,352		93,429		85,838			1,760,834
	Accumulated amortization	(318,214		)	(9,434		)	—			—			—		—		(21,558		)	(349,206		)
		828,358			17,209			—			—			408,352		93,429		64,280			1,411,628
	Mining properties, net	$	870,892		$	63,882		$	183,498		$	44,334		$	408,352	$	93,429	$	64,280		$	1,728,667
	December 31, 2013	Palmarejo			San			Kensington			Rochester			La Preciosa		Joaquin		Coeur Capital			Total
					Bartolomé
	Mine development	$	151,845		$	70,761		$	268,351		$	150,348		$	—	$	—	$	—		$	641,305
	Accumulated amortization	(110,143		)	(22,236		)	(80,032		)	(103,130		)	—		—		—			(315,541		)
		41,702			48,525			188,319			47,218			—		—		—			325,764
	Mineral interests	1,146,572			26,643			—			—			408,352		93,429		78,133			1,753,129
	Accumulated amortization	(300,187		)	(8,759		)	—			—			—		—		(18,446		)	(327,392		)
		846,385			17,884			—			—			408,352		93,429		59,687			1,425,737
	Mining properties, net	$	888,087		$	66,409		$	188,319		$	47,218		$	408,352	$	93,429	$	59,687		$	1,751,501

Debt

Debt	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
DEBT	'
	DEBT
	Long-term debt and capital lease obligations at June 30, 2014 and December 31, 2013 are as follows (in thousands):
		June 30, 2014					December 31, 2013
		Current			Non-Current		Current			Non-Current
	3.25% Convertible Senior Notes due 2028	$	5,334		$	—	$	—		$	5,334
	7.875% Senior Notes due 2021	—			452,855		—			300,000
	Capital lease obligations	6,231			15,715		2,505			796
		$	11,565		$	468,570	$	2,505		$	306,130
	7.875% Senior Notes due 2021
	On January 29, 2013, the Company completed an offering of $300 million in aggregate principal amount of 7.875% Senior Notes due 2021 (the “Original Notes”) in a private placement conducted pursuant to Rule 144A and Regulation S under the Securities Act of 1933, as amended (the “Securities Act”). The Company commenced an exchange offer for the Notes on September 30, 2013 to exchange the Notes for freely transferable notes containing substantially similar terms, in accordance with the registration rights granted to the holders of the Notes when they were issued. The exchange offer was consummated on November 5, 2013.
	On March 12, 2014, the Company completed an offering of $150 million in aggregate principal amount of 7.875% Senior Notes due 2021 (the “Additional Notes” and together with the Original Notes, the "Senior Notes") in a private placement conducted pursuant to Rule 144A and Regulation S under the Securities Act. The Additional Notes constitute a further issuance of the Original Notes and form a single series of debt securities with the Original Notes. Upon completion of Coeur’s offering of the Additional Notes, the aggregate principal amount of the outstanding Senior Notes was $450 million. The Company commenced an exchange offer for the Additional Notes on April 10, 2014 to exchange the Additional Notes for freely transferable notes containing substantially similar terms, in accordance with the registration rights granted to the holders of the Additional Notes when they were issued. The exchange offer was consummated on May 9, 2014.
	3.25% Convertible Senior Notes due 2028
	Per the indenture governing the 3.25% Convertible Senior Notes due 2028 (the “Convertible Notes”), the Company announced on February 13, 2013 that it was offering to repurchase all of the Convertible Notes. As of February 12, 2013, there was $48.7 million aggregate principal amount of Convertible Notes outstanding. The Company repurchased $43.3 million in aggregate principal amount, leaving a balance of $5.3 million at June 30, 2014. The notes are classified as current liabilities at June 30, 2014 as a result of the holders' option to require the Company to repurchase the notes on March 15, 2015.
	Revolving Credit Facility
	On August 1, 2012, Coeur Alaska, Inc. and Coeur Rochester, Inc. (the “Borrowers”), each a wholly-owned subsidiary of the Company, entered into a Credit Agreement (the “Credit Agreement”) by and among the Company, the Borrowers, the lenders party thereto and Wells Fargo Bank, N.A., as administrative agent. The Credit Agreement provided for a senior secured revolving credit facility (the “Revolving Credit Facility”) in an aggregate principal amount of up to $100.0 million, which principal amount may be increased, subject to receiving additional commitments therefor, by up to $50.0 million.
	On January 16, 2014, the Company and the Borrowers entered into Amendment No. 1 to Credit Agreement (the “Amendment”) to amend the Credit Agreement. Pursuant to the Amendment, among other things, the pricing of loans and undrawn commitments under the Credit Agreement was modified and certain modifications were made to the financial covenants and negative covenant provisions under the Credit Agreement. On March 20, 2014, the Borrowers notified the administrative agent that they were terminating the Revolving Credit Facility, effective March 25, 2014. The Company wrote off $3.0 million related to the termination of the Credit Agreement in the six months ended June 30, 2014. No amounts were outstanding under the Revolving Credit Facility at the time of termination, and no early termination penalty was payable in connection with the termination.
	Lines of Credit
	At June 30, 2014, San Bartolomé had two outstanding lines of credit supporting value added tax recoveries in Bolivia. One line is for $7.0 million bearing interest at 2.75% per annum and the other line is for $4.0 million bearing interest at 3.0% per annum. There was no balance outstanding on the two lines of credit at June 30, 2014 and 2013, respectively.
	Palmarejo Gold Production Royalty Obligation
	On January 21, 2009, Coeur Mexicana entered into a gold production royalty transaction with a subsidiary of Franco-Nevada Corporation under which Franco-Nevada Mexico Corporation S.A. de C.V. ("Franco-Nevada Mexico") purchased a royalty covering 50% of the life of mine gold to be produced from its Palmarejo silver and gold mine in Mexico.
	The royalty agreement provides for a minimum obligation to be paid monthly on a total of 400,000 ounces of gold, or 4,167 ounces per month over an initial eight year period. Each monthly payment is an amount equal to the greater of 4,167 ounces of gold or 50% of actual gold production multiplied by the excess of the monthly average market price of gold above $408 per ounce, subject to a 1% annual inflation compounding adjustment. As of June 30, 2014, payments had been made on a total of 289,760 ounces of gold with further payments to be made on an additional 110,240 ounces of gold. After payments have been made on a total of 400,000 ounces of gold, the royalty obligation is payable in the amount of 50% of actual gold production per month multiplied by the excess of the monthly average market price of gold above $400 per ounce, adjusted as described above. Payments under the royalty agreement are to be made in cash or gold bullion. During the three months ended June 30, 2014 and 2013, the Company paid $12.3 million and $15.5 million, respectively, and the Company paid $27.0 million and $30.9 million during the six months ended June 30, 2014 and 2013, respectively, in royalty payments to Franco-Nevada Corporation. Payments made during the minimum obligation period will result in a reduction to the remaining minimum obligation. Payments made beyond the minimum obligation period will be recognized in operating expenses.
	The Company used an implicit interest rate of 30.5% to discount the original obligation, based on the fair value of the consideration received projected over the expected future cash flows at inception of the obligation. The discounted obligation is accreted to its expected future value over the expected minimum payment period based on the implicit interest rate. The Company recognized accretion expense for the three months ended June 30, 2014 and 2013 of $2.9 million and $4.1 million, respectively, and $6.1 million and $8.2 million for the six months ended June 30, 2014 and 2013, respectively. At June 30, 2014 and December 31, 2013, the remaining minimum obligation under the royalty agreement was $42.0 million and $51.2 million, respectively.
	Interest Expense
	Interest expense is made up of the following (in thousands):
		Three months ended June 30,					Six months ended June 30,
		2014			2013		2014			2013
	3.25% Convertible Senior Notes due 2028	$	43		$	43	$	86		$	380
	7.875% Senior Notes due 2021	8,859			5,906		15,323			10,041
	Revolving Credit Facility	—			133		179			258
	Loss on Revolving Credit Facility	—			—		3,035			—
	Capital lease obligations	333			98		392			266
	Other debt obligations	—			72		—			268
	Accretion of Palmarejo gold production royalty obligation	2,898			4,107		6,094			8,170
	Amortization of debt issuance costs	420			539		918			1,064
	Accretion of debt (premium) discount	(108		)	—		(144		)	576
	Capitalized interest	(135		)	32		(518		)	(361		)
	Total interest expense, net of capitalized interest	$	12,310		$	10,930	$	25,365		$	20,662

Supplemental_Guarantor_Informa

Supplemental Guarantor Information	6 Months Ended
	Jun. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
SUPPLEMENTAL GUARANTOR INFORMATION	'
	SUPPLEMENTAL GUARANTOR INFORMATION
	The following Condensed Consolidating Financial Statements are presented to satisfy disclosure requirements of Rule 3-10 of Regulation S-X resulting from the guarantees by Coeur Alaska, Inc., Coeur Explorations, Inc., Coeur Rochester, Inc., Coeur South America Corp., and Coeur Capital Inc. (collectively, the “Subsidiary Guarantors”) of the $450 million aggregate principal amount of Senior Notes. The following schedules present Condensed Consolidating Financial Statements of (a) Coeur, the parent company; (b) the Subsidiary Guarantors; and (c) certain wholly owned domestic and foreign subsidiaries of the Company (collectively, the “Non-Guarantor Subsidiaries”). Each of the Subsidiary Guarantors is 100% owned by Coeur and the guarantees are full and unconditional. There are no restrictions on the ability of Coeur to obtain funds from its subsidiaries by dividend or loan.
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	THREE MONTHS ENDED JUNE 30, 2014
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Revenue	$	—		$	60,748		$	103,814		$	—		$	164,562
	COSTS AND EXPENSES
	Costs applicable to sales(1)	—			47,599			71,088			—			118,687
	Amortization	448			16,784			24,190			—			41,422
	General and administrative	9,716			(163		)	(155		)	—			9,398
	Exploration	950			2,483			1,720			—			5,153
	Pre-development, reclamation, and other	352			1,307			7,101			—			8,760
	Total costs and expenses	11,466			68,010			103,944			—			183,420
	OTHER INCOME (EXPENSE), NET
	Fair value adjustments, net	(1,456		)	(1,837		)	(4,989		)	—			(8,282		)
	Impairment of marketable securities	—			(934		)	—			—			(934		)
	Interest income and other, net	1,075			12			(507		)	(696		)	(116		)
	Interest expense, net of capitalized interest	(9,215		)	(314		)	(3,477		)	696			(12,310		)
	Total other income (expense), net	(9,596		)	(3,073		)	(8,973		)	—			(21,642		)
	Loss before income and mining taxes	(21,062		)	(10,335		)	(9,103		)	—			(40,500		)
	Income and mining tax (expense) benefit	273			(419		)	(2,475		)	—			(2,621		)
	Total loss after income and mining taxes	(20,789		)	(10,754		)	(11,578		)	—			(43,121		)
	Equity income (loss) in consolidated subsidiaries	(22,332		)	121			—			22,211			—
	NET INCOME (LOSS)	$	(43,121	)	$	(10,633	)	$	(11,578	)	$	22,211		$	(43,121	)
	OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
	Unrealized gain (loss) on marketable securities, net of tax	(773		)	(847		)	—			847			(773		)
	Reclassification adjustments for impairment of marketable securities	572			572			—			(572		)	572
	Reclassification adjustments for realized loss on sale of marketable securities	17			17			—			(17		)	17
	Other comprehensive income (loss)	(184		)	(258		)	—			258			(184		)
	COMPREHENSIVE INCOME (LOSS)	$	(43,305	)	$	(10,891	)	$	(11,578	)	$	22,469		$	(43,305	)
	(1) Excludes amortization.
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	THREE MONTHS ENDED JUNE 30, 2013
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Revenue	$	—		$	65,754		$	138,771		$	—		$	204,525
	COSTS AND EXPENSES
	Costs applicable to sales(1)	—			52,669			89,717			—			142,386
	Amortization	231			15,151			41,512			—			56,894
	General and administrative	12,617			1,375			1,034			—			15,026
	Exploration	314			1,398			5,062			—			6,774
	Litigation settlement	—			32,046			—			—			32,046
	Pre-development, reclamation, and other	—			1,135			682			—			1,817
	Total costs and expenses	13,162			103,774			138,007			—			254,943
	OTHER INCOME (EXPENSE), NET
	Fair value adjustments, net	(662		)	6,350			61,066			—			66,754
	Impairment of marketable securities	(17,192		)	—			—			—			(17,192		)
	Interest income and other, net	1,309			241			(247		)	(884		)	419
	Interest expense, net of capitalized interest	(6,623		)	(100		)	(5,091		)	884			(10,930		)
	Total other income (expense), net	(23,168		)	6,491			55,728			—			39,051
	Loss before income and mining taxes	(36,330		)	(31,529		)	56,492			—			(11,367		)
	Income and mining tax (expense) benefit	(824		)	(730		)	(22,119		)	—			(23,673		)
	Total loss after income and mining taxes	(37,154		)	(32,259		)	34,373			—			(35,040		)
	Equity income (loss) in consolidated subsidiaries	2,114			—			—			(2,114		)	—
	NET INCOME (LOSS)	$	(35,040	)	$	(32,259	)	$	34,373		$	(2,114	)	$	(35,040	)
	OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
	Unrealized gain (loss) on marketable securities, net of tax	(7,491		)	—			—			—			(7,491		)
	Reclassification adjustments for impairment of marketable securities	17,192			—			—			—			17,192
	Other comprehensive income (loss)	9,701			—			—			—			9,701
	COMPREHENSIVE INCOME (LOSS)	$	(25,339	)	$	(32,259	)	$	34,373		$	(2,114	)	$	(25,339	)
	(1) Excludes amortization.
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	THREE MONTHS ENDED JUNE 30, 2014
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by (used in) operating activities	$	(35,100	)	$	4,210		$	39,169		$	22,211		30,490
CASH FLOWS FROM INVESTING ACTIVITIES	—			—			—
Capital expenditures	(106		)	(7,945		)	(7,305		)	—			(15,356		)
Purchase of short term investments and marketable securities	(2,106		)	(33		)	—			—			(2,139		)
Sales and maturities of short term investments	217			583			—			—			800
Acquisitions	—			(2,250		)	—			—			(2,250		)
Other	—			4			8			—			12
Investments in consolidated subsidiaries	65,832			(121		)	—			(65,711		)	—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	63,837			(9,762		)	(7,297		)	(65,711		)	(18,933		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	(403		)	(2,131		)	(317		)	—			(2,851		)
Gold production royalty payments	—			—			(12,345		)	—			(12,345		)
Net intercompany financing activity	(20,555		)	7,828			(30,773		)	43,500			—
Other	(160		)	—			—			—			(160		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(21,118		)	5,697			(43,435		)	43,500			(15,356		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	7,619			145			(11,563		)	—			(3,799		)
Cash and cash equivalents at beginning of period	204,045			754			68,133			—			272,932
Cash and cash equivalents at end of period	$	211,664		$	899		$	56,570		$	—		$	269,133
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
THREE MONTHS ENDED JUNE 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by (used in) operating activities	$	(4,114	)	$	3,768		$	65,798		$	(2,114	)	$	63,338
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(129		)	(14,003		)	(13,069		)	—			(27,201		)
Purchase of short term investments and marketable securities	—			(23		)	(660		)	—			(683		)
Sales and maturities of short term investments	1,498			24			—			—			1,522
Acquisitions	(101,648		)	—			—			—			(101,648		)
Other	(18		)	205			67			—			254
Investments in consolidated subsidiaries	(5,602		)				3,488			2,114			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(105,899		)	(13,797		)	(10,174		)	2,114			(127,756		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	—			(715		)	(1,142		)	—			(1,857		)
Gold production royalty payments	—			—			(15,480		)	—			(15,480		)
Net intercompany financing activity	(11,666		)	11,183			483			—			—
Other	(25		)	—			—			—			(25		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(11,691		)	10,468			(16,139		)	—			(17,362		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(121,704		)	439			39,485			—			(81,780		)
Cash and cash equivalents at beginning of period	308,585			284			22,442			—			331,311
Cash and cash equivalents at end of period	$	186,881		$	723		$	61,927		$	—		$	249,531
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
SIX MONTHS ENDED JUNE 30, 2014
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenue	$	—		$	121,248		$	202,947		$	—		$	324,195
COSTS AND EXPENSES
Costs applicable to sales(1)	—			90,837			134,746			—			225,583
Amortization	825			32,080			48,944			—			81,849
General and administrative	22,768			3			523			—			23,294
Exploration	1,536			4,904			2,930			—			9,370
Pre-development, reclamation, and other	352			2,843			12,580			—			15,775
Total costs and expenses	25,481			130,667			199,723			—			355,871
Fair value adjustments, net	(1,982		)	(2,510		)	(15,225		)	—			(19,717		)
Impairment of marketable securities	—			(3,522		)	—			—			(3,522		)
Interest income and other, net	1,915			58			(2,720		)	(1,353		)	(2,100		)
Interest expense, net of capitalized interest	(19,398		)	(340		)	(6,980		)	1,353			(25,365		)
Total other income (expense), net	(19,465		)	(6,314		)	(24,925		)	—			(50,704		)
Loss before income and mining taxes	(44,946		)	(15,733		)	(21,701		)	—			(82,380		)
Income and mining tax (expense) benefit	127			(419		)	2,360			—			2,068
Total loss after income and mining taxes	(44,819		)	(16,152		)	(19,341		)	—			(80,312		)
Equity income (loss) in consolidated subsidiaries	(35,493		)	299			—			35,194			—
NET INCOME (LOSS)	$	(80,312	)	$	(15,853	)	$	(19,341	)	$	35,194		$	(80,312	)
OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
Unrealized gain (loss) on marketable securities, net of tax	(401		)	(380		)	—			380			(401		)
Reclassification adjustments for impairment of marketable securities	2,159			2,159			—			(2,159		)	2,159
Reclassification adjustments for realized loss on sale of marketable securities	17			17			—			(17		)	17
Other comprehensive income (loss)	1,775			1,796			—			(1,796		)	1,775
COMPREHENSIVE INCOME (LOSS)	$	(78,537	)	$	(14,057	)	$	(19,341	)	$	33,398		$	(78,537	)
(1) Excludes amortization.
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
SIX MONTHS ENDED JUNE 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Revenue	$	—		$	144,502		$	231,820		$	—		$	376,322
COSTS AND EXPENSES
Costs applicable to sales(1)	—			97,010			133,434			—			230,444
Amortization	450			30,295			75,844			—			106,589
General and administrative	22,354			1,542			1,357			—			25,253
Exploration	663			2,862			10,090			—			13,615
Litigation settlement	—			32,046			—			—			32,046
Pre-development, reclamation, and other	—			1,563			5,600			—			7,163
Total costs and expenses	23,467			165,318			226,325			—			415,110
OTHER INCOME (EXPENSE), NET							.
Fair value adjustments, net	(1,522		)	10,577			75,495			—			84,550
Impairment of marketable securities	(17,227		)	—			—			—			(17,227		)
Interest income and other, net	2,208			475			3,316			(1,724		)	4,275
Interest expense, net of capitalized interest	(12,320		)	(364		)	(9,702		)	1,724			(20,662		)
Total other income (expense), net	(28,861		)	10,688			69,109			—			50,936
Loss before income and mining taxes	(52,328		)	(10,128		)	74,604			—			12,148
Income and mining tax (expense) benefit	(3,310		)	(1,510		)	(30,098		)	—			(34,918		)
Total loss after income and mining taxes	(55,638		)	(11,638		)	44,506			—			(22,770		)
Equity income (loss) in consolidated subsidiaries	32,868			—			—			(32,868		)	—
NET INCOME (LOSS)	$	(22,770	)	$	(11,638	)	$	44,506		$	(32,868	)	$	(22,770	)
OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
Unrealized gain (loss) on marketable securities, net of tax	(11,057		)	—			—			—			(11,057		)
Reclassification adjustments for impairment of marketable securities	17,227			—			—			—			17,227
Other comprehensive income (loss)	6,170			—			—			—			6,170
COMPREHENSIVE INCOME (LOSS)	$	(16,600	)	$	(11,638	)	$	44,506		$	(32,868	)	$	(16,600	)
(1) Excludes amortization.
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
SIX MONTHS ENDED JUNE 30, 2014
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by (used in) operating activities	$	(72,723	)	$	9,142		$	49,251		$	35,194		20,864
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(1,051		)	(13,615		)	(12,626		)	—			(27,292		)
Purchase of short term investments and marketable securities	(47,903		)	(457		)	—			—			(48,360		)
Sales and maturities of short term investments	307			583			—			—			890
Acquisitions	—			(2,250		)	—			—			(2,250		)
Other	—			4			(17		)	—			(13		)
Investments in consolidated subsidiaries	78,993			(299		)	—			(78,694		)	—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	30,346			(16,034		)	(12,643		)	(78,694		)	(77,025		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of notes and bank borrowings	153,000			—			—			—			153,000
Payments on long-term debt, capital leases, and associated costs	(3,599		)	(2,543		)	(820		)	—			(6,962		)
Gold production royalty payments	—			—			(27,028		)	—			(27,028		)
Net intercompany financing activity	(32,030		)	9,343			(20,813		)	43,500			—
Other	(406		)	—			—			—			(406		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	116,965			6,800			(48,661		)	43,500			118,604
NET CHANGE IN CASH AND CASH EQUIVALENTS	74,588			(92		)	(12,053		)	—			62,443
Cash and cash equivalents at beginning of period	137,076			991			68,623			—			206,690
Cash and cash equivalents at end of period	$	211,664		$	899		$	56,570		$	—		$	269,133
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
SIX MONTHS ENDED JUNE 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by (used in) operating activities	$	18,860		$	20,659		$	69,621		$	(32,868	)	$	76,272
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(557		)	(20,629		)	(18,842		)	—			(40,028		)
Purchase of short term investments and marketable securities	(1,598		)	(39		)	(3,695		)	—			(5,332		)
Sales and maturities of short term investments	2,873			38			3,433			—			6,344
Acquisitions	(113,214		)	—			—			—			(113,214		)
Other	(6		)	443			772			—			1,209
Investments in consolidated subsidiaries	(36,355		)	—			3,487			32,868			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(148,857		)	(20,187		)	(14,845		)	32,868			(151,021		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of notes and bank borrowings	300,000			—			—			—			300,000
Payments on long-term debt, capital leases, and associated costs	(52,565		)	(1,955		)	(2,677		)	—			(57,197		)
Gold production royalty payments	—			—			(30,929		)	—			(30,929		)
Share repurchases	(12,557		)	—			—			—			(12,557		)
Net intercompany financing activity	(4,311		)	1,806			2,505			—			—
Other	(477		)	—			—			—			(477		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	230,090			(149		)	(31,101		)	—			198,840
NET CHANGE IN CASH AND CASH EQUIVALENTS	100,093			323			23,675			—			124,091
Cash and cash equivalents at beginning of period	86,788			400			38,252			—			125,440
Cash and cash equivalents at end of period	$	186,881		$	723		$	61,927		$	—		$	249,531
CONDENSED CONSOLIDATING BALANCE SHEET
JUNE 30, 2014
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	211,664		$	899		$	56,570		$	—		$	269,133
Investments	47,642									—			47,642
Receivables	83			10,420			58,190			—			68,693
Ore on leach pads	—			44,964			—			—			44,964
Inventory	—			47,331			90,313			—			137,644
Deferred tax assets	—			—			35,079			—			35,079
Prepaid expenses and other	2,573			8,546			12,474			—			23,593
	261,962			112,160			252,626			—			626,748
NON-CURRENT ASSETS
Property, plant and equipment, net	6,234			153,551			323,002			—			482,787
Mining properties, net	—			235,216			1,493,451			—			1,728,667
Ore on leach pads	—			46,956			—			—			46,956
Restricted assets	830			50			6,630			—			7,510
Marketable securities	—			13,761			—			—			13,761
Receivables	—			—			38,424			—			38,424
Debt issuance costs, net	11,031			—			—			—			11,031
Deferred tax assets	955						(147		)	—			808
Net investment in subsidiaries	1,165,274			24,277			1,601,038			(2,790,589		)	—
Other	55,212			31,601			324,941			(400,924		)	10,830
TOTAL ASSETS	$	1,501,498		$	617,572		$	4,039,965		$	(3,191,513	)	$	2,967,522
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	2,209		$	16,456		$	30,986		$	—		$	49,651
Accrued liabilities and other	19,768			7,370			14,577			(1,083		)	40,632
Debt	5,334			5,637			334,873			(334,279		)	11,565
Royalty obligations	—			4,716			46,371			—			51,087
Reclamation	—			—			633			119			752
Deferred tax liabilities	—			847			1,011			—			1,858
	27,311			35,026			428,451			(335,243		)	155,545
NON-CURRENT LIABILITIES
Debt	452,855			15,345			65,932			(65,562		)	468,570
Royalty obligations	—			18,941			39,564			—			58,505
Reclamation	—			47,467			12,409			(119		)	59,757
Deferred tax liabilities	31,595			1,618			507,019			—			540,232
Other long-term liabilities	2,901			518			24,861			—			28,280
Intercompany payable (receivable)	(669,797		)	437,030			232,767			—			—
	(182,446		)	520,919			882,552			(65,681		)	1,155,344
STOCKHOLDERS’ EQUITY
Common stock	1,034			250			123,167			(123,417		)	1,034
Additional paid-in capital	2,785,761			79,712			3,258,037			(3,337,749		)	2,785,761
Accumulated deficit	(1,127,031		)	(15,226		)	(652,242		)	667,468			(1,127,031		)
Accumulated other comprehensive income (loss)	(3,131		)	(3,109		)	—			3,109			(3,131		)
	1,656,633			61,627			2,728,962			(2,790,589		)	1,656,633
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,501,498		$	617,572		$	4,039,965		$	(3,191,513	)	$	2,967,522
CONDENSED CONSOLIDATING BALANCE SHEET
DECEMBER 31, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	137,076		$	991		$	68,623		$	—		$	206,690
Investments	—			—			—			—			—
Receivables	530			19,982			60,562			—			81,074
Ore on leach pads	—			50,495			—			—			50,495
Inventory	—			35,290			96,733			—			132,023
Deferred tax assets	—			—			35,008			—			35,008
Prepaid expenses and other	4,128			5,282			16,530			—			25,940
	141,734			112,040			277,456			—			531,230
NON-CURRENT ASSETS
Property, plant and equipment, net	5,980			143,118			337,175			—			486,273
Mining properties, net	—			235,537			1,515,964			—			1,751,501
Ore on leach pads	—			31,528			—			—			31,528
Restricted assets	830			50			6,134			—			7,014
Marketable securities	—			14,521			—			—			14,521
Receivables	—			—			36,574			—			36,574
Debt issuance costs, net	10,812			—			—			—			10,812
Deferred tax assets	955			—			234			—			1,189
Net investment in subsidiaries	1,242,480			46,215			1,578,799			(2,867,494		)	—
Other	53,858			14,616			320,425			(373,563		)	15,336
TOTAL ASSETS	$	1,456,649		$	597,625		$	4,072,761		$	(3,241,057	)	$	2,885,978
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	1,963		$	15,864		$	36,020		$	—		$	53,847
Accrued liabilities and other	16,693			8,016			14,611			(1,054		)	38,266
Debt	—			1,262			309,472			(308,229		)	2,505
Royalty obligations	—			3,934			44,085			—			48,019
Reclamation	—			—			794			119			913
Deferred tax liabilities	—			—			1,011			—			1,011
	18,656			29,076			405,993			(309,164		)	144,561
NON-CURRENT LIABILITIES
Debt	305,335			255			64,820			(64,280		)	306,130
Royalty obligations	—			17,696			47,446			—			65,142
Reclamation	—			45,894			11,740			(119		)	57,515
Deferred tax liabilities	37,095			1,618			517,533			—			556,246
Other long-term liabilities	2,467			544			22,806			—			25,817
Intercompany payable (receivable)	(637,471		)	427,085			210,386			—			—
	(292,574		)	493,092			874,731			(64,399		)	1,010,850
STOCKHOLDERS’ EQUITY
Common stock	1,028			250			122,666			(122,916		)	1,028
Additional paid-in capital	2,781,164			79,712			3,258,037			(3,337,749		)	2,781,164
Accumulated deficit	(1,046,719		)	401			(588,666		)	588,265			(1,046,719		)
Accumulated other comprehensive income (loss)	(4,906		)	(4,906		)	—			4,906			(4,906		)
	1,730,567			75,457			2,792,037			(2,867,494		)	1,730,567
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,456,649		$	597,625		$	4,072,761		$	(3,241,057	)	$	2,885,978

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	COMMITMENTS AND CONTINGENCIES
	Labor Union Contracts
	The Company maintains a labor agreement in South America with Sindicato de Trabajadores Mineros de la Empresa Manquiri S.A. at the San Bartolomé mine in Bolivia. The San Bartolomé mine labor agreement, which became effective January 28, 2010, is currently active and does not have a fixed term. At June 30, 2014, approximately 10% of the Company’s worldwide labor force was covered by collective bargaining agreements. The Company cannot predict whether this agreement will be renewed on similar terms or at all, whether future labor disruptions will occur or, if disruptions do occur, how long they will last.
	Kensington Production Royalty
	On July 7, 1995, Coeur, through its wholly owned subsidiary, Coeur Alaska, Inc., acquired the 50% ownership interest of Echo Bay Exploration Inc., or Echo Bay, giving Coeur 100% ownership of the Kensington property. Coeur Alaska is obligated to pay Echo Bay, a subsidiary of Kinross Gold Corporation, a scaled net smelter return royalty on 1.0 million ounces of future gold production after Coeur Alaska recoups the $32.5 million purchase price and its construction and development expenditures incurred after July 7, 1995 in connection with placing the property into commercial production. The royalty ranges from 1% at gold prices of $400 per ounce to a maximum of 2.5% at gold prices above $475 per ounce, with the royalty to be capped at 1.0 million ounces of production. No royalty has been paid to date as the purchase price and construction and development costs have not been recouped.
	Rochester Production Royalties
	The Company acquired the Rochester property from ASARCO, a subsidiary of Grupo Mexico S.A. de C.V., in 1983. The Company is obligated to pay a net smelter royalty interest to ASARCO when the market price of silver equals or exceeds $23.60 per ounce up to a maximum rate of 5% with the condition that Rochester achieves positive cash flow for the applicable year. If cash flow at Rochester is negative in any calendar year, the maximum royalty payable is $250,000. Royalty expense was nil due to silver prices below $23.60 per ounce for the three and six months ended June 30, 2014, and nil and $1.0 million for the three and six months ended June 30, 2013.
	Commencing January 1, 2014, Coeur Rochester is obligated to pay a 3.4% net smelter returns royalty on up to 39.4 million silver equivalent ounces produced and sold from a portion of the Rochester mine, payable on a quarterly basis. For each calendar quarter, the royalty will be payable on the actual sales prices received (exclusive of gains or losses associated with trading activities), less refining costs, of gold and silver produced and sold from the applicable portions of the Rochester mine. Changes in the Company's mine plan and silver and gold prices will result in the recognition of mark-to-market gains or losses in Fair value adjustments, net.
	Palmarejo Gold Production Royalty
	On January 21, 2009, Coeur Mexicana entered into a gold production royalty transaction with Franco-Nevada Mexico under which Franco-Nevada Mexico purchased a royalty covering 50% of the life of mine gold to be produced from its Palmarejo silver and gold mine in Mexico. The royalty agreement provides for a minimum obligation to be paid monthly on a total of 400,000 ounces of gold, or 4,167 ounces per month over an initial eight-year period. Please see Note 10 -- Derivative Financial Instruments for further discussion on the royalty obligation. On June 23, 2014, the Company announced that it had entered into letters of intent with each of Franco-Nevada Mexico and Franco-Nevada (Barbados) Corp. ("Franco-Nevada Barbados"), providing for termination of the existing royalty stream agreement with Franco-Nevada Mexico effective upon the satisfaction of the minimum payment obligation thereunder, and the entry into a new gold stream agreement with Franco-Nevada Barbados. The Company expects to enter into definitive agreements governing the transactions contemplated by the letters of intent in the third quarter of 2014.
	Sites Related to Callahan Mining Corporation
	In 1991, the Company acquired all of the outstanding common stock of Callahan Mining Corporation. The Company has received requests for information or notices of potential liability from state or federal agencies with regard to Callahan's operations at sites in Maine, Colorado and Washington. The Company did not make any decisions with respect to generation, transport or disposal of hazardous waste at these sites. Therefore, the Company believes that it is not liable for any potential cleanup costs either directly as an operator or indirectly as a parent. To date, none of these agencies have made any claims against the Company or Callahan for cleanup costs at these sites. The Company anticipates that further agency interaction may be possible with respect to these sites.
	Callahan operated a mine and mill in Brooksville, Maine from 1968 until 1972 and subsequently disposed of the property. In 2000, the U.S. Environmental Protection Agency, or EPA, made a formal request to the Company for information regarding the site. The site was placed on the National Priorities List on September 5, 2002, and the Maine Department of Transportation, a partial owner of the property, signed a consent order in 2005. In January 2009, the EPA and the State of Maine made additional formal requests to the Company for information relating to the site, to which the Company responded. The first phase of cleanup at the site began in April 2011.
	The Van Stone Mine in Stevens County, Washington consists of several parcels of land and was mined from 1926 until 1993 by multiple owners. Callahan sold its parcel in 1990. In February 2010, the State of Washington Department of Ecology notified Callahan that it, among others, is a potentially liable person (PLP) under Washington law. Asarco LLC ("Asarco"), an affiliate of American Smelting and Refining Company, which developed the mill on the site in 1951, settled for $3.5 million. Another potentially liable person, Vaagen Brothers, signed a consent order which allows access to the site for a Remedial Investigation and Feasibility Study. Neither the Company nor Callahan has received any further notices from the Washington Department of Ecology. On June 5, 2012, Asarco filed a lawsuit in the U.S. District Court for the Eastern District of Washington against five named defendants, including Callahan, seeking contribution for the $3.5 million settlement. Callahan filed a response and defense to the lawsuit on December 11, 2012 and does not believe it has any liability to Asarco. On January 23, 2013, the Court entered an Order dismissing one of the five named defendants from the lawsuit as a result of the parties reaching a settlement. The Court set a trial date for September 22, 2014; however, on June 3, 2014, the Court granted a joint motion to stay proceedings pending finalization of settlement arrangements between Asarco and Callahan.
	Callahan controlled the Akron Mine located in Gunnison County, Colorado under lease and option agreements with several owners from 1937-1960. In December 2003, the United States Forest Service (“USFS”) made a formal request for information to the Company for information regarding the site, to which the Company responded. In February 2007, the USFS made a formal request for information to Callahan for information regarding the site, to which Callahan responded. In April 2013, the USFS made a formal request for information to the Company regarding the site, to which the Company responded on June 10, 2013. In November 2013, the USFS made a formal request for additional information to the Company regarding the site, to which the Company responded on January 21, 2014.
	Bolivian Temporary Restriction on Mining above 4,400 Meters
	On October 14, 2009, the Bolivian state-owned mining organization, COMIBOL, announced by resolution that it was temporarily suspending mining activities above the elevation of 4,400 meters above sea level while stability studies of Cerro Rico mountain are undertaken. The Company holds rights to mine above this elevation under valid contracts with COMIBOL as well as under authorized contracts with local mining cooperatives that hold their rights under contract themselves with COMIBOL. The Company temporarily adjusted its mine plan to confine mining activities to the ore deposits below 4,400 meters above sea level and timely notified COMIBOL of the need to lift the restriction. Mining in other areas above the 4,400 meter level continues to be suspended.
	The suspension may reduce production until the Company is able to resume mining above 4,400 meters. It is uncertain at this time how long the suspension will remain in place. If COMIBOL decides to restrict access above the 4,400 meter level on a permanent basis, the Company may need to write down the carrying value of the asset. It is also uncertain if any new mining or investment policies or shifts in political attitude may affect mining in Bolivia.
	Appeal of Plan of Operations Amendment at Rochester in Nevada
	The Rochester property was the subject of an administrative appeal filed by Great Basin Resource Watch (“GBRW”) with the Interior Board of Land Appeals (“IBLA”). This appeal challenged the decision of the U.S. Bureau of Land Management (“BLM”) to approve a plan of operations amendment permitting resumed mining in the existing mine pit and construction of a new heap leach pad.  GBRW asserted that the National Environmental Policy Act (“NEPA”) required an Environmental Impact Statement for the plan of operations amendment, as opposed to the Environmental Assessment (“EA”) that was prepared.  GBRW further alleged that BLM violated the Federal Land Policy & Management Act (“FLPMA”) by failing to avoid unnecessary and undue degradation of public lands.  Because GBRW did not seek a stay of BLM's decision, operations proceeded as approved during the course of the administrative appeal. Coeur was granted intervenor status in the appeal and actively participated in its resolution.  The BLM and Coeur asserted that the EA complies with NEPA and that BLM complied with FLPMA by, among other things, requiring mitigation of any possible future effects on water quality.  BLM filed a Supplemental Briefing on March 1, 2012 regarding additional analysis conducted by the BLM that further supported and strengthened BLM and Coeur's positions that the EA complies with NEPA. On June 30, 2014, the IBLA affirmed the BLM's decision to approve the plan of operations amendment.
	Settlement of Unpatented Mining Claims Dispute at Rochester in Nevada
	In the second quarter of 2013, Coeur Rochester settled all claims associated with a dispute involving ownership of unpatented mining claims surrounding the Coeur Rochester operation and, in connection therewith, agreed to make a one-time $10.0 million cash payment and granted the 3.4% net smelter returns royalty described above under "Rochester Production Royalties." The above settlement resulted in a $32.0 million charge in the second quarter of 2013.

Segment_Reporting_Tables

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2014																									Jun. 30, 2013
Segment Reporting [Abstract]	'																									'
Financial information relating to the reporting segments	'																									'
	Six months ended June 30, 2014	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total			Six months ended June 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
		Mine			Mine			Mine			Mine																Mine			Mine			Mine			Mine
	Revenue																									Revenue
	Metal sales	$	140,434		$	56,632		$	65,079		$	55,347		$	—		$	4,860		$	—		$	322,352		Metal sales	$	143,643		$	82,377		$	70,126		$	74,377		$	—		$	6,461		$	(662	)	$	376,322
	Royalties	—			—			—			—			—			1,843			—			1,843			Royalties	—			—			—			—			—			—			—			—
		140,434			56,632			65,079			55,347			—			6,703			—			324,195				143,643			82,377			70,126			74,377			—			6,461			(662		)	376,322
	Costs and Expenses																									Costs and Expenses
	Costs applicable to sales(1)	93,126			39,595			51,749			39,089			—			2,024			—			225,583			Costs applicable to sales(1)	81,937			48,494			53,718			43,293			—			3,002			—			230,444
	Amortization	36,702			9,313			22,275			9,476			41			3,121			921			81,849			Amortization	64,166			9,464			26,445			3,842			2			2,052			618			106,589
	Exploration	2,642			82			2,680			1,912			210			312			1,532			9,370			Exploration	5,170			79			1,235			996			690			630			4,815			13,615
	Other operating expenses	622			335			390			2,189			10,668			504			24,361			39,069			Litigation	—			—			—			32,046			—			—			—			32,046
	Other income (expense)																									Other operating expenses	341			3,954			412			2,938			—			(245		)	25,016			32,416
	Interest income and other, net	(2,772		)	1,373			4			51			(17		)	(3,512		)	(749		)	(5,622		)
																										Other income (expense)
	Interest expense, net	(5,595		)	(31		)	(75		)	(266		)	—			—			(19,398		)	(25,365		)	Interest income and other, net	1,514			1,288			281			57			(11		)	138			(16,219		)	(12,952		)
	Fair value adjustments, net	(15,225		)	—			—			(2,510		)	—			—			(1,982		)	(19,717		)	Interest expense, net	(7,928		)	(46		)	(354		)	(11		)	—			—			(12,323		)	(20,662		)
	Income and mining tax (expense) benefit	5,171			(4,969		)	—			(419		)	(1,271		)	(25		)	3,581			2,068			Fair value adjustments, net	75,494			—			10,577			—			—			—			(1,521		)	84,550
	Net income (loss)	$	(11,079	)	$	3,680		$	(12,086	)	$	(463	)	$	(12,207	)	$	(2,795	)	$	(45,362	)	$	(80,312	)	Income and mining tax (expense) benefit	(20,816		)	(8,834		)	(1		)	(1,264		)	—			(245		)	(3,758		)	(34,918		)
	Segment assets(2)	$	1,133,851		$	309,565		$	331,151		$	206,665		$	412,226		$	67,864		$	110,406		$	2,571,728		Net income (loss)	$	40,293		$	12,794		$	(1,181	)	$	(9,956	)	$	(703	)	$	915		$	(64,932	)	$	(22,770	)
	Capital expenditures	$	9,331		$	3,152		$	8,700		$	4,915		$	141		$	—		$	1,053		$	27,292		Segment assets(2)	$	1,860,240		$	286,325		$	485,215		$	122,917		$	409,458		$	31,493		$	108,954		$	3,304,602
	(1)    Excludes amortization																									Capital expenditures	$	14,480		$	3,616		$	10,736		$	9,894		$	735		$	—		$	567		$	40,028
	(2)     Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests
	Financial information relating to the Company’s segments is as follows (in thousands):
																										Three months ended June 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total
	Three months ended June 30, 2014	Palmarejo			San Bartolomé			Kensington			Rochester			La Preciosa			Coeur Capital			Other			Total				Mine			Mine			Mine			Mine
		Mine			Mine			Mine			Mine															Revenue
	Revenue																									Metal sales	$	86,217		$	49,236		$	30,851		$	34,903		$	—		$	3,479		$	(161	)	$	204,525
	Metal sales	$	72,446		$	29,078		$	29,018		$	31,193		$	—		$	1,971		$	—		$	163,706
																										Royalties	—			—			—			—			—			—			—			—
	Royalties	—			—			—			—			—			856			—			856
																											$	86,217		$	49,236		$	30,851		$	34,903		$	—		$	3,479		$	(161	)	$	204,525
		72,446			29,078			29,018			31,193			—			2,827			—			164,562
																										Costs and Expenses
	Costs and Expenses																									Costs applicable to sales(1)	55,218			32,815			30,154			22,516			—			1,683			—			142,386
	Costs applicable to sales(1)	49,551			20,695			23,218			24,381			—			842			—			118,687
																										Amortization	35,384			4,824			13,159			1,989			2			1,224			312			56,894
	Amortization	18,044			4,855			11,566			5,025			22			1,419			491			41,422
																										Exploration	3,189			27			563			512			690			322			1,471			6,774
	Exploration	1,637			57			1,636			738			26			109			950			5,153
																										Litigation settlement	—			—			—			32,046			—			—			—			32,046
	Other operating expenses	325			194			199			844			5,711			263			10,622			18,158
																										Other operating expenses	173			117			236			2,466			—			(191		)	14,042			16,843
	Other income (expense)
	Interest income and other, net	(1,202		)	691			4			32			118			(964		)	271			(1,050		)	Other income (expense)
																										Interest income and other, net	(428		)	683			150			—			(11		)	91			(17,258		)	(16,773		)
	Interest expense, net	(2,771		)	(11		)	(53		)	(261		)	—			—			(9,214		)	(12,310		)
																										Interest expense, net	(4,190		)	(14		)	(95		)	(5		)	—			—			(6,626		)	(10,930		)
	Fair value adjustments, net	(4,989		)	—			—			(1,837		)	—			—			(1,456		)	(8,282		)
																										Fair value adjustments, net	61,066			—			6,350			—			—			—			(662		)	66,754
	Income and mining tax (expense) benefit	1,342			(2,204		)	—			(419		)	(1,159		)	263			(444		)	(2,621		)
																										Income and mining tax (expense) benefit	(17,282		)	(4,506		)	—			(538		)	—			(191		)	(1,156		)	(23,673		)
	Net income (loss)	$	(4,731	)	$	1,753		$	(7,650	)	$	(2,280	)	$	(6,800	)	$	(507	)	$	(22,906	)	$	(43,121	)
																										Net income (loss)	$	31,419		$	7,616		$	(6,856	)	$	(25,169	)	$	(703	)	$	341		$	(41,688	)	$	(35,040	)
	Segment assets(2)	$	1,133,851		$	309,565		$	331,151		$	206,665		$	412,226		$	67,864		$	110,406		$	2,571,728
																										Segment assets(2)	$	1,860,240		$	286,325		$	485,215		$	122,917		$	409,458		$	31,493		$	108,954		$	3,304,602
	Capital expenditures	$	5,589		$	1,711		$	3,989		$	3,956		$	3		$	—		$	108		$	15,356
																										Capital expenditures	$	9,166		$	3,159		$	7,406		$	6,596		$	735		$	—		$	139		$	27,201
Consolidated Assets	'																									'
	(in thousands)	June 30, 2014			December 31, 2013
	Assets
	Total assets for reportable segments	$	2,571,728		$	2,595,408
	Cash and cash equivalents	269,133			206,690
	Short term investments	47,642			—
	Other assets	79,019			83,880
	Total consolidated assets	$	2,967,522		$	2,885,978
Long Lived Assets by Country	'																									'
	Geographic Information
	(in thousands)	June 30, 2014			December 31, 2013
	Long Lived Assets
	United States	$	387,617		$	384,626
	Australia	23,858			25,668
	Argentina	94,495			94,705
	Bolivia	228,606			235,085
	Mexico	1,461,228			1,487,228
	Other Foreign Countries	15,650			10,462
	Total	$	2,211,454		$	2,237,774
Revenue by Country	'																									'
		Three months ended June 30,						Six months ended June 30,
	(in thousands)	2014			2013			2014			2013
	Revenue
	United States	$	60,212		$	65,754		$	120,427		$	144,502
	Mexico	72,657			86,217			141,167			143,643
	Bolivia	29,078			49,236			56,632			82,377
	Australia	1,971			3,479			4,860			6,462
	Other	644			(161		)	$	1,109		$	(662	)
	Total	$	164,562		$	204,525		$	324,195		$	376,322

Reclamation_Tables

Reclamation (Tables)	6 Months Ended
	Jun. 30, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
Asset Retirement Obligation	'
	Changes to the Company’s asset retirement obligations are as follows (in thousands):
		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
	Asset retirement obligation - Beginning	$	58,460		$	35,197		$	57,454		$	34,457
	Accretion	1,435			758			2,752			1,500
	Settlements	(100		)	(377		)	(411		)	(379		)
	Asset retirement obligation - Ending	$	59,795		$	35,578		$	59,795		$	35,578

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	'
	The following table summarizes the grants awarded during the six months ended June 30, 2014:
	Grant date	Restricted	Grant date fair		Stock options	Grant date		Performance	Grant date fair
		stock	value of			fair value of		shares	value of
			restricted stock			stock			performance
						options			shares
	17-Jan-14	243,351	$	11.12	32,417	$	4.39	345,833	$	12.65
	26-Mar-14	435,208	$	9.31	382,755	$	3.74	—	$	—
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity	'
	The following options and stock appreciation rights were exercised during the six months ended June 30, 2014:
	Award Type	Number of	Weighted Average		Number of Exercisable Units	Weighted Average
		Exercised Units	Exercised Price			Exercisable Price
	Options	—	$	—	256,927	$	28.91
	Stock Appreciation Rights	—	$	—	50,209	$	14.15

Income_and_Mining_Taxes_Tables

Income and Mining Taxes (Tables)	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
	The following table summarizes the components of the Company's income and mining tax (expense) benefit for the three and six months ended June 30, 2014 and 2013 by significant location:
		Three months ended June 30,												Six months ended June 30,
		2014						2013						2014						2013
	(in thousands)	Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit			Income (loss) before tax			Tax (expense) benefit
	United States	$	(31,370	)	$	(146	)	$	(67,824	)	$	(1,329	)	$	(60,214	)	$	(292	)	$	(61,896	)	$	(4,541	)
	Argentina	(688		)	(349		)	(2,989		)	(117		)	(2,892		)	4,083			(6,981		)	(44		)
	Mexico	(12,710		)	107			47,214			(15,798		)	(28,716		)	3,828			58,756			(19,471		)
	Bolivia	3,957			(2,205		)	12,122			(4,556		)	8,649			(4,969		)	21,628			(8,884		)
	Other jurisdictions	311			(28		)	110			(1,873		)	793			(582		)	641			(1,978		)
		$	(40,500	)	$	(2,621	)	$	(11,367	)	$	(23,673	)	$	(82,380	)	$	2,068		$	12,148		$	(34,918	)

Net_Income_Loss_Per_Share_Tabl

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Three months ended June 30,						Six months ended June 30,
	In thousands except per share amounts	2014			2013			2014			2013
	Net income (loss) available to common stockholders	$	(43,121	)	$	(35,040	)	$	(80,312	)	$	(22,770	)
	Weighted average shares:
	Basic	102,444			99,833			102,405			94,918
	Effect of share based compensation plans	—			—			—			—
	Diluted	102,444			99,833			102,405			94,918
	Income (loss) per share:
	Basic	$	(0.42	)	$	(0.35	)	$	(0.78	)	$	(0.24	)
	Diluted	$	(0.42	)	$	(0.35	)	$	(0.78	)	$	(0.24	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Schedule of Fair Value Adjustments to Comprehensive income (Loss)	'
	The following table presents the components of Fair value adjustments, net (in thousands):
			Three months ended March 31,								Six months ended June 30,
			2014				2013				2014				2013
	Palmarejo royalty obligation embedded derivative		$	(5,061	)		$	61,066			$	(15,296	)		$	75,495
	Rochester net smelter royalty obligation		(1,837		)		—				(2,510		)		—
	Silver and gold options		(1,374		)		6,350				(2,868		)		10,577
	Foreign exchange contracts		(10		)		(662		)		957				(1,522		)
	Fair value adjustments, net		$	(8,282	)		$	66,754			$	(19,717	)		$	84,550
Financial assets and liabilities measured at fair value on recurring basis	'
	The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement (in thousands):
		Fair Value at June 30, 2014
		Total				Level 1				Level 2				Level 3
	Assets:
	Short-term investments	$	47,642			$	47,642			$	—			$	—
	Marketable equity securities	13,761				13,761				—				—
	Silver and gold options	1,298				—				1,298				—
	Other derivative instruments, net	240				—				240				—
		$	62,941			$	61,403			$	1,538			$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	43,960			$	—			$	—			$	43,960
	Rochester net smelter royalty obligation	23,656				—				—				23,656
	Silver and gold options	291				—				291				—
		$	67,907			$	—			$	291			$	67,616
		Fair Value at December 31, 2013
		Total				Level 1				Level 2				Level 3
	Assets:
	Marketable equity securities	$	14,521			$	14,521			$	—			$	—
	Silver and gold options	135				—				135				—
		$	14,656			$	14,521			$	135			$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	40,338			$	—			$	—			$	40,338
	Rochester net smelter royalty obligation	21,630				—				—				21,630
	Other derivative instruments, net	1,591				—				1,591				—
		$	63,559			$	—			$	1,591			$	61,968
Changes in the fair value of the Company's Level 3 financial liabilities	'
	The following tables present the changes in the fair value of the Company's Level 3 financial liabilities for the three and six months ended June 30, 2014 (in thousands):
		Three months ended June 30, 2014
		Balance at the beginning of the period				Revaluation				Settlements				Balance at the end of the period
	Palmarejo royalty obligation embedded derivative	$	44,357			$	5,061			$	(5,458	)		$	43,960
	Rochester net smelter royalty obligation	22,303				1,837				(484		)		23,656
		Six months ended June 30, 2014
		Balance at the beginning of the period				Revaluation				Settlements				Balance at the end of the period
	Palmarejo royalty obligation embedded derivative	$	40,338			$	15,296			$	(11,674	)		$	43,960
	Rochester net smelter royalty obligation	21,630				2,510				(484		)		23,656
Financial Assets and Liabilities not Measured at Fair Value	'
	The fair value of financial assets and liabilities measured at book value in the financial statements at June 30, 2014 and December 31, 2013 is presented in the following table (in thousands):
		30-Jun-14
		Book Value				Fair Value				Level 1				Level 2				Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,334			$	5,047			$	—			$	5,047			$	—
	7.875% Senior Notes due 2021	452,855				455,625				—				455,625				—
	Palmarejo Gold Production Royalty Obligation	41,976				51,252				—				—				51,252
		31-Dec-13
		Book Value				Fair Value				Level 1				Level 2				Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,334			$	5,067			$	5,067			$	—			$	—
	7.875% Senior Notes due 2021	300,000				307,314				307,314				—				—
	Palmarejo Gold Production Royalty Obligation	51,193				65,212				—				—				65,212

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative instruments, future settlement	'
	At June 30, 2014, the Company had the following derivative instruments that settle in each of the years indicated (in thousands except average prices and notional ounces):
		2014				2015				2016				Thereafter
	Palmarejo gold production royalty	$	27,334			$	46,078			$	27,741			$	—
	Average gold price in excess of minimum contractual deduction	$	913			$	919			$	920			$	—
	Notional ounces	29,920				50,153				30,168				—
	Mexican peso put options purchased	$	23,000			$	—			$	—			$	—
	Average rate (MXN/$)	14.97				—				—				—
	Mexican peso notional amount	344,310				—				—				—
	Mexican peso call options sold	$	23,000			$	—			$	—			$	—
	Average rate (MXN/$)	12.6				—				—				—
	Mexican peso notional amount	289,800				—				—				—
	Silver concentrate sales contracts	$	3,253			$	—			$	—			$	—
	Average silver price	$	19.99			$	—			$	—			$	—
	Notional ounces	162,724				—				—				—
	Gold concentrate sales contracts	$	14,865			$	—			$	—			$	—
	Average gold price	$	1,286			$	—			$	—			$	—
	Notional ounces	11,559				—				—				—
	Gold put options purchased	$	60,000			$	28,800			$	—			$	—
	Average gold strike price	$	1,200			$	1,200			$	—			$	—
	Notional ounces	50,000				24,000				—				—
	Silver put options purchased	$	45,000			$	22,500			$	—			$	—
	Average silver strike price	$	18			$	18			$	—			$	—
	Notional ounces	2,500,000				1,250,000				—				—
	Gold put options sold	$	(52,500	)		$	(25,200	)		$	—			$	—
	Average gold strike price	$	1,050			$	1,050			$	—			$	—
	Notional ounces	50,000				24,000				—				—
	Silver put options sold	$	(40,000	)		$	(20,000	)		$	—			$	—
	Average silver strike price	$	16			$	16			$	—			$	—
	Notional ounces	2,500,000				1,250,000				—				—
Fair value of the derivative instruments	'
	The following summarizes the classification of the fair value of the derivative instruments (in thousands):
		June 30, 2014
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
	Foreign exchange contracts, peso	$	49			$	—			$	—			$	—
	Palmarejo gold production royalty	—				—				22,393				21,567
	Silver and gold options	1,298				291				—				—
	Concentrate sales contracts	192				1				—				—
		$	1,539			$	292			$	22,393			$	21,567
		December 31, 2013
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
	Foreign exchange contracts, peso	$	38			$	947			$	—			$	—
	Palmarejo gold production royalty	—				—				17,650				22,688
	Silver and gold options	135				—				—				—
	Concentrate sales contracts	11				693				—				—
		$	184			$	1,640			$	17,650			$	22,688
Gain losses on derivative instruments	'
	The following represent mark-to-market gains (losses) on derivative instruments for the three and six months ended June 30, 2014, and 2013 (in thousands):
				Three months ended June 30,								Six months ended June 30,
	Financial statement line	Derivative		2014				2013				2014				2013
	Sales of metal	Concentrate sales contracts		$	7			$	(667	)		$	872			$	(2,422	)
	Costs applicable to sales	Foreign exchange contracts		—				203				(924		)		830
	Fair value adjustments, net	Foreign exchange contracts (MXN)		(10		)		(2,260		)		957				(1,522		)
	Fair value adjustments, net	Foreign exchange contracts (CDN)		—				1,598				—				—
	Fair value adjustments, net	Palmarejo gold royalty		(5,061		)		61,066				(15,296		)		75,495
	Fair value adjustments, net	Silver and gold options		(1,374		)		6,350				(2,868		)		10,577
				$	(6,438	)		$	66,290			$	(17,259	)		$	82,958

Acquisitions_Tables

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Schedule of Business Acquisitions, by Acquisition	'
	Total consideration paid (in thousands):
	Common shares issued (11,572,918 at $14.98)	$	173,363
	Cash	99,059
	Warrants (1,588,768 valued at $3.64 per warrant)	5,777
	Transaction advisory fees and other acquisition costs	17,642
	Total purchase price	295,841
	Current liabilities	2,616
	Deferred income taxes	114,339
	Total liabilities assumed	116,955
	Total Consideration	$	412,796
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	Estimated fair value of the assets acquired (in thousands):
	Cash	$	3,487
	Other current assets	635
	Mineral interests	408,352
	Other assets	322
	Total assets acquired	$	412,796

Investments_Tables

Investments (Tables)	6 Months Ended
	Jun. 30, 2014
Investment in Marketable Securities [Abstract]	'
Investments	'
	(in thousands)	At June 30, 2014
		Cost				Gross				Gross				Estimated
						Unrealized				Unrealized				Fair Value
						Losses				Gains
	Short-term investments	$	47,661			$	(31	)		$	12			$	47,642
	Marketable equity securities	13,972				(677		)		466				13,761
	(in thousands)	At December 31, 2013
		Cost				Gross				Gross				Estimated
						Unrealized				Unrealized				Fair Value
						Losses				Gains
	Marketable equity securities	$	17,649			$	(3,300	)		$	172			$	14,521
Gross unrealized losses on investment securities	'
	The following table summarizes the gross unrealized losses on investment securities for which other-than-temporary impairments have not been recognized and the fair values of those securities, aggregated by the length of time the individual securities have been in a continuous unrealized loss position, at June 30, 2014 (in thousands):
		Less than twelve months							Twelve months or more							Total
		Unrealized Losses			Fair Value				Unrealized Losses			Fair Value				Unrealized Losses			Fair Value
	Short-term investments	$	(31	)	$	29,090			$	—		$	—			$	(31	)	$	29,090
	Marketable equity securities	$	—		$	—			$	(677	)	$	1,399			$	(677	)	$	1,399

Receivables_Tables

Receivables (Tables)	6 Months Ended
	Jun. 30, 2014
Receivables [Abstract]	'
Receivables	'
	Receivables consist of the following (in thousands):
		June 30, 2014		December 31, 2013
	Receivables - current:
	Trade receivables	$	7,467	$	17,303
	Income tax receivable	7,845		6,240
	Value added tax receivable	47,340		49,168
	Other	6,041		8,363
		$	68,693	$	81,074
	Receivables - non-current:
	Value added tax receivable	$	38,424	$	36,574

Metal_and_Other_Inventory_Tabl

Metal and Other Inventory (Tables)	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventory consists of the following (in thousands):
	Inventory:	June 30, 2014		December 31, 2013
	Concentrate	$	19,151	$	14,855
	Precious metals	52,630		52,250
	Supplies	65,863		64,918
		$	137,644	$	132,023
	Ore on Leach Pads:
	Current	$	44,964	$	50,495
	Non-Current	46,956		31,528
		$	91,920	$	82,023
	Total Inventory and Ore on Leach Pads	$	229,564	$	214,046

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, plant and equipment	'
	Property, plant and equipment consist of the following (in thousands):
		June 30, 2014			December 31, 2013
	Land	$	1,764		$	1,764
	Facilities and equipment	872,575			855,318
	Capital leases	25,680			16,133
		900,019			873,215
	Accumulated amortization	(429,904		)	(395,520		)
		470,115			477,695
	Construction in progress	12,672			8,578
	Property, plant and equipment, net	$	482,787		$	486,273

Mining_Properties_Tables

Mining Properties (Tables)	6 Months Ended
	Jun. 30, 2014
Mining Properties [Abstract]	'
Mining Properties	'
	Mining properties consist of the following (in thousands):
	June 30, 2014	Palmarejo			San			Kensington			Rochester			La Preciosa		Joaquin		Coeur Capital			Total
					Bartolomé
	Mine development	$	158,631		$	70,764		$	275,660		$	152,443		$	—	$	—	$	—		$	657,498
	Accumulated amortization	(116,097		)	(24,091		)	(92,162		)	(108,109		)	—		—		—			(340,459		)
		42,534			46,673			183,498			44,334			—		—		—			317,039
	Mineral interests	1,146,572			26,643			—			—			408,352		93,429		85,838			1,760,834
	Accumulated amortization	(318,214		)	(9,434		)	—			—			—		—		(21,558		)	(349,206		)
		828,358			17,209			—			—			408,352		93,429		64,280			1,411,628
	Mining properties, net	$	870,892		$	63,882		$	183,498		$	44,334		$	408,352	$	93,429	$	64,280		$	1,728,667
	December 31, 2013	Palmarejo			San			Kensington			Rochester			La Preciosa		Joaquin		Coeur Capital			Total
					Bartolomé
	Mine development	$	151,845		$	70,761		$	268,351		$	150,348		$	—	$	—	$	—		$	641,305
	Accumulated amortization	(110,143		)	(22,236		)	(80,032		)	(103,130		)	—		—		—			(315,541		)
		41,702			48,525			188,319			47,218			—		—		—			325,764
	Mineral interests	1,146,572			26,643			—			—			408,352		93,429		78,133			1,753,129
	Accumulated amortization	(300,187		)	(8,759		)	—			—			—		—		(18,446		)	(327,392		)
		846,385			17,884			—			—			408,352		93,429		59,687			1,425,737
	Mining properties, net	$	888,087		$	66,409		$	188,319		$	47,218		$	408,352	$	93,429	$	59,687		$	1,751,501

Debt_Tables

Debt (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Long term debt and capital lease obligations	'
	Long-term debt and capital lease obligations at June 30, 2014 and December 31, 2013 are as follows (in thousands):
		June 30, 2014					December 31, 2013
		Current			Non-Current		Current			Non-Current
	3.25% Convertible Senior Notes due 2028	$	5,334		$	—	$	—		$	5,334
	7.875% Senior Notes due 2021	—			452,855		—			300,000
	Capital lease obligations	6,231			15,715		2,505			796
		$	11,565		$	468,570	$	2,505		$	306,130
Interest expenses incurred for various debt instruments	'
	Interest expense is made up of the following (in thousands):
		Three months ended June 30,					Six months ended June 30,
		2014			2013		2014			2013
	3.25% Convertible Senior Notes due 2028	$	43		$	43	$	86		$	380
	7.875% Senior Notes due 2021	8,859			5,906		15,323			10,041
	Revolving Credit Facility	—			133		179			258
	Loss on Revolving Credit Facility	—			—		3,035			—
	Capital lease obligations	333			98		392			266
	Other debt obligations	—			72		—			268
	Accretion of Palmarejo gold production royalty obligation	2,898			4,107		6,094			8,170
	Amortization of debt issuance costs	420			539		918			1,064
	Accretion of debt (premium) discount	(108		)	—		(144		)	576
	Capitalized interest	(135		)	32		(518		)	(361		)
	Total interest expense, net of capitalized interest	$	12,310		$	10,930	$	25,365		$	20,662

Supplemental_Guarantor_Informa1

Supplemental Guarantor Information (Tables)	6 Months Ended
	Jun. 30, 2014																Jun. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'																'
Schedule of Comprehensive Income (Loss)	'																'
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)																CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
	SIX MONTHS ENDED JUNE 30, 2014																THREE MONTHS ENDED JUNE 30, 2013
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated				Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Revenue	$	—		$	121,248		$	202,947		$	—		$	324,195		Revenue	$	—		$	65,754		$	138,771		$	—		$	204,525
	COSTS AND EXPENSES																COSTS AND EXPENSES
	Costs applicable to sales(1)	—			90,837			134,746			—			225,583			Costs applicable to sales(1)	—			52,669			89,717			—			142,386
	Amortization	825			32,080			48,944			—			81,849			Amortization	231			15,151			41,512			—			56,894
	General and administrative	22,768			3			523			—			23,294			General and administrative	12,617			1,375			1,034			—			15,026
	Exploration	1,536			4,904			2,930			—			9,370			Exploration	314			1,398			5,062			—			6,774
	Pre-development, reclamation, and other	352			2,843			12,580			—			15,775			Litigation settlement	—			32,046			—			—			32,046
	Total costs and expenses	25,481			130,667			199,723			—			355,871			Pre-development, reclamation, and other	—			1,135			682			—			1,817
	Fair value adjustments, net	(1,982		)	(2,510		)	(15,225		)	—			(19,717		)	Total costs and expenses	13,162			103,774			138,007			—			254,943
	Impairment of marketable securities	—			(3,522		)	—			—			(3,522		)	OTHER INCOME (EXPENSE), NET
																	Fair value adjustments, net	(662		)	6,350			61,066			—			66,754
	Interest income and other, net	1,915			58			(2,720		)	(1,353		)	(2,100		)
																	Impairment of marketable securities	(17,192		)	—			—			—			(17,192		)
	Interest expense, net of capitalized interest	(19,398		)	(340		)	(6,980		)	1,353			(25,365		)
																	Interest income and other, net	1,309			241			(247		)	(884		)	419
	Total other income (expense), net	(19,465		)	(6,314		)	(24,925		)	—			(50,704		)
																	Interest expense, net of capitalized interest	(6,623		)	(100		)	(5,091		)	884			(10,930		)
	Loss before income and mining taxes	(44,946		)	(15,733		)	(21,701		)	—			(82,380		)
																	Total other income (expense), net	(23,168		)	6,491			55,728			—			39,051
	Income and mining tax (expense) benefit	127			(419		)	2,360			—			2,068
																	Loss before income and mining taxes	(36,330		)	(31,529		)	56,492			—			(11,367		)
	Total loss after income and mining taxes	(44,819		)	(16,152		)	(19,341		)	—			(80,312		)
																	Income and mining tax (expense) benefit	(824		)	(730		)	(22,119		)	—			(23,673		)
	Equity income (loss) in consolidated subsidiaries	(35,493		)	299			—			35,194			—
																	Total loss after income and mining taxes	(37,154		)	(32,259		)	34,373			—			(35,040		)
	NET INCOME (LOSS)	$	(80,312	)	$	(15,853	)	$	(19,341	)	$	35,194		$	(80,312	)
																	Equity income (loss) in consolidated subsidiaries	2,114			—			—			(2,114		)	—
	OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
	Unrealized gain (loss) on marketable securities, net of tax	(401		)	(380		)	—			380			(401		)	NET INCOME (LOSS)	$	(35,040	)	$	(32,259	)	$	34,373		$	(2,114	)	$	(35,040	)
	Reclassification adjustments for impairment of marketable securities	2,159			2,159			—			(2,159		)	2,159			OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
																	Unrealized gain (loss) on marketable securities, net of tax	(7,491		)	—			—			—			(7,491		)
	Reclassification adjustments for realized loss on sale of marketable securities	17			17			—			(17		)	17
																	Reclassification adjustments for impairment of marketable securities	17,192			—			—			—			17,192
	Other comprehensive income (loss)	1,775			1,796			—			(1,796		)	1,775
																	Other comprehensive income (loss)	9,701			—			—			—			9,701
	COMPREHENSIVE INCOME (LOSS)	$	(78,537	)	$	(14,057	)	$	(19,341	)	$	33,398		$	(78,537	)
																	COMPREHENSIVE INCOME (LOSS)	$	(25,339	)	$	(32,259	)	$	34,373		$	(2,114	)	$	(25,339	)
	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)																(1) Excludes amortization.
	THREE MONTHS ENDED JUNE 30, 2014
																	CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated			SIX MONTHS ENDED JUNE 30, 2013
	Revenue	$	—		$	60,748		$	103,814		$	—		$	164,562
	COSTS AND EXPENSES																	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Costs applicable to sales(1)	—			47,599			71,088			—			118,687			Revenue	$	—		$	144,502		$	231,820		$	—		$	376,322
	Amortization	448			16,784			24,190			—			41,422			COSTS AND EXPENSES
																	Costs applicable to sales(1)	—			97,010			133,434			—			230,444
	General and administrative	9,716			(163		)	(155		)	—			9,398
																	Amortization	450			30,295			75,844			—			106,589
	Exploration	950			2,483			1,720			—			5,153
																	General and administrative	22,354			1,542			1,357			—			25,253
	Pre-development, reclamation, and other	352			1,307			7,101			—			8,760
																	Exploration	663			2,862			10,090			—			13,615
	Total costs and expenses	11,466			68,010			103,944			—			183,420
																	Litigation settlement	—			32,046			—			—			32,046
	OTHER INCOME (EXPENSE), NET
	Fair value adjustments, net	(1,456		)	(1,837		)	(4,989		)	—			(8,282		)	Pre-development, reclamation, and other	—			1,563			5,600			—			7,163
	Impairment of marketable securities	—			(934		)	—			—			(934		)	Total costs and expenses	23,467			165,318			226,325			—			415,110
	Interest income and other, net	1,075			12			(507		)	(696		)	(116		)	OTHER INCOME (EXPENSE), NET							.
																	Fair value adjustments, net	(1,522		)	10,577			75,495			—			84,550
	Interest expense, net of capitalized interest	(9,215		)	(314		)	(3,477		)	696			(12,310		)
Impairment of marketable securities																	(17,227		)	—			—			—			(17,227		)
	Total other income (expense), net	(9,596		)	(3,073		)	(8,973		)	—			(21,642		)
Interest income and other, net																	2,208			475			3,316			(1,724		)	4,275
	Loss before income and mining taxes	(21,062		)	(10,335		)	(9,103		)	—			(40,500		)
Interest expense, net of capitalized interest																	(12,320		)	(364		)	(9,702		)	1,724			(20,662		)
	Income and mining tax (expense) benefit	273			(419		)	(2,475		)	—			(2,621		)
Total other income (expense), net																	(28,861		)	10,688			69,109			—			50,936
	Total loss after income and mining taxes	(20,789		)	(10,754		)	(11,578		)	—			(43,121		)
Loss before income and mining taxes																	(52,328		)	(10,128		)	74,604			—			12,148
	Equity income (loss) in consolidated subsidiaries	(22,332		)	121			—			22,211			—
Income and mining tax (expense) benefit																	(3,310		)	(1,510		)	(30,098		)	—			(34,918		)
	NET INCOME (LOSS)	$	(43,121	)	$	(10,633	)	$	(11,578	)	$	22,211		$	(43,121	)
Total loss after income and mining taxes																	(55,638		)	(11,638		)	44,506			—			(22,770		)
	OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
Unrealized gain (loss) on marketable securities, net of tax	(773		)	(847		)	—			847			(773		)	Equity income (loss) in consolidated subsidiaries	32,868			—			—			(32,868		)	—
Reclassification adjustments for impairment of marketable securities	572			572			—			(572		)	572			NET INCOME (LOSS)	$	(22,770	)	$	(11,638	)	$	44,506		$	(32,868	)	$	(22,770	)
Reclassification adjustments for realized loss on sale of marketable securities	17			17			—			(17		)	17			OTHER COMPREHENSIVE INCOME (LOSS), net of tax:
																Unrealized gain (loss) on marketable securities, net of tax	(11,057		)	—			—			—			(11,057		)
Other comprehensive income (loss)	(184		)	(258		)	—			258			(184		)
																Reclassification adjustments for impairment of marketable securities	17,227			—			—			—			17,227
COMPREHENSIVE INCOME (LOSS)	$	(43,305	)	$	(10,891	)	$	(11,578	)	$	22,469		$	(43,305	)
																Other comprehensive income (loss)	6,170			—			—			—			6,170
																COMPREHENSIVE INCOME (LOSS)	$	(16,600	)	$	(11,638	)	$	44,506		$	(32,868	)	$	(16,600	)
Schedule of Condensed Cash Flow Statement	'																'
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	THREE MONTHS ENDED JUNE 30, 2014																CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
																	THREE MONTHS ENDED JUNE 30, 2013
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	CASH FLOWS FROM OPERATING ACTIVITIES:																	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	Cash provided by (used in) operating activities	$	(35,100	)	$	4,210		$	39,169		$	22,211		30,490			CASH FLOWS FROM OPERATING ACTIVITIES:
																	Cash provided by (used in) operating activities	$	(4,114	)	$	3,768		$	65,798		$	(2,114	)	$	63,338
	CASH FLOWS FROM INVESTING ACTIVITIES	—			—			—
																	CASH FLOWS FROM INVESTING ACTIVITIES
	Capital expenditures	(106		)	(7,945		)	(7,305		)	—			(15,356		)	Capital expenditures	(129		)	(14,003		)	(13,069		)	—			(27,201		)
	Purchase of short term investments and marketable securities	(2,106		)	(33		)	—			—			(2,139		)	Purchase of short term investments and marketable securities	—			(23		)	(660		)	—			(683		)
	Sales and maturities of short term investments	217			583			—			—			800			Sales and maturities of short term investments	1,498			24			—			—			1,522
	Acquisitions	—			(2,250		)	—			—			(2,250		)	Acquisitions	(101,648		)	—			—			—			(101,648		)
	Other	—			4			8			—			12			Other	(18		)	205			67			—			254
	Investments in consolidated subsidiaries	65,832			(121		)	—			(65,711		)	—			Investments in consolidated subsidiaries	(5,602		)				3,488			2,114			—
	CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	63,837			(9,762		)	(7,297		)	(65,711		)	(18,933		)	CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(105,899		)	(13,797		)	(10,174		)	2,114			(127,756		)
	CASH FLOWS FROM FINANCING ACTIVITIES:																CASH FLOWS FROM FINANCING ACTIVITIES:
	Payments on long-term debt, capital leases, and associated costs	(403		)	(2,131		)	(317		)	—			(2,851		)	Payments on long-term debt, capital leases, and associated costs	—			(715		)	(1,142		)	—			(1,857		)
	Gold production royalty payments	—			—			(12,345		)	—			(12,345		)	Gold production royalty payments	—			—			(15,480		)	—			(15,480		)
	Net intercompany financing activity	(20,555		)	7,828			(30,773		)	43,500			—			Net intercompany financing activity	(11,666		)	11,183			483			—			—
	Other	(160		)	—			—			—			(160		)	Other	(25		)	—			—			—			(25		)
	CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(21,118		)	5,697			(43,435		)	43,500			(15,356		)	CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(11,691		)	10,468			(16,139		)	—			(17,362		)
	NET CHANGE IN CASH AND CASH EQUIVALENTS	7,619			145			(11,563		)	—			(3,799		)	NET CHANGE IN CASH AND CASH EQUIVALENTS	(121,704		)	439			39,485			—			(81,780		)
	Cash and cash equivalents at beginning of period	204,045			754			68,133			—			272,932			Cash and cash equivalents at beginning of period	308,585			284			22,442			—			331,311
	Cash and cash equivalents at end of period	$	211,664		$	899		$	56,570		$	—		$	269,133		Cash and cash equivalents at end of period	$	186,881		$	723		$	61,927		$	—		$	249,531
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS																CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	SIX MONTHS ENDED JUNE 30, 2014																SIX MONTHS ENDED JUNE 30, 2013
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated				Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	CASH FLOWS FROM OPERATING ACTIVITIES:																CASH FLOWS FROM OPERATING ACTIVITIES:
	Cash provided by (used in) operating activities	$	(72,723	)	$	9,142		$	49,251		$	35,194		20,864			Cash provided by (used in) operating activities	$	18,860		$	20,659		$	69,621		$	(32,868	)	$	76,272
	CASH FLOWS FROM INVESTING ACTIVITIES																CASH FLOWS FROM INVESTING ACTIVITIES
	Capital expenditures	(1,051		)	(13,615		)	(12,626		)	—			(27,292		)	Capital expenditures	(557		)	(20,629		)	(18,842		)	—			(40,028		)
	Purchase of short term investments and marketable securities	(47,903		)	(457		)	—			—			(48,360		)	Purchase of short term investments and marketable securities	(1,598		)	(39		)	(3,695		)	—			(5,332		)
	Sales and maturities of short term investments	307			583			—			—			890			Sales and maturities of short term investments	2,873			38			3,433			—			6,344
	Acquisitions	—			(2,250		)	—			—			(2,250		)	Acquisitions	(113,214		)	—			—			—			(113,214		)
	Other	—			4			(17		)	—			(13		)	Other	(6		)	443			772			—			1,209
	Investments in consolidated subsidiaries	78,993			(299		)	—			(78,694		)	—			Investments in consolidated subsidiaries	(36,355		)	—			3,487			32,868			—
	CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	30,346			(16,034		)	(12,643		)	(78,694		)	(77,025		)	CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(148,857		)	(20,187		)	(14,845		)	32,868			(151,021		)
	CASH FLOWS FROM FINANCING ACTIVITIES:																CASH FLOWS FROM FINANCING ACTIVITIES:
	Issuance of notes and bank borrowings	153,000			—			—			—			153,000			Issuance of notes and bank borrowings	300,000			—			—			—			300,000
	Payments on long-term debt, capital leases, and associated costs	(3,599		)	(2,543		)	(820		)	—			(6,962		)	Payments on long-term debt, capital leases, and associated costs	(52,565		)	(1,955		)	(2,677		)	—			(57,197		)
	Gold production royalty payments	—			—			(27,028		)	—			(27,028		)	Gold production royalty payments	—			—			(30,929		)	—			(30,929		)
	Net intercompany financing activity	(32,030		)	9,343			(20,813		)	43,500			—			Share repurchases	(12,557		)	—			—			—			(12,557		)
	Other	(406		)	—			—			—			(406		)	Net intercompany financing activity	(4,311		)	1,806			2,505			—			—
	CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	116,965			6,800			(48,661		)	43,500			118,604			Other	(477		)	—			—			—			(477		)
	NET CHANGE IN CASH AND CASH EQUIVALENTS	74,588			(92		)	(12,053		)	—			62,443			CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	230,090			(149		)	(31,101		)	—			198,840
	Cash and cash equivalents at beginning of period	137,076			991			68,623			—			206,690			NET CHANGE IN CASH AND CASH EQUIVALENTS	100,093			323			23,675			—			124,091
	Cash and cash equivalents at end of period	$	211,664		$	899		$	56,570		$	—		$	269,133		Cash and cash equivalents at beginning of period	86,788			400			38,252			—			125,440
																	Cash and cash equivalents at end of period	$	186,881		$	723		$	61,927		$	—		$	249,531
Schedule of Condensed Balance Sheet	'																'
	CONDENSED CONSOLIDATING BALANCE SHEET
	DECEMBER 31, 2013
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS
	CURRENT ASSETS
	Cash and cash equivalents	$	137,076		$	991		$	68,623		$	—		$	206,690
	Investments	—			—			—			—			—
	Receivables	530			19,982			60,562			—			81,074
	Ore on leach pads	—			50,495			—			—			50,495
	Inventory	—			35,290			96,733			—			132,023
	Deferred tax assets	—			—			35,008			—			35,008
	Prepaid expenses and other	4,128			5,282			16,530			—			25,940
		141,734			112,040			277,456			—			531,230
	NON-CURRENT ASSETS
	Property, plant and equipment, net	5,980			143,118			337,175			—			486,273
	Mining properties, net	—			235,537			1,515,964			—			1,751,501
	Ore on leach pads	—			31,528			—			—			31,528
	Restricted assets	830			50			6,134			—			7,014
	Marketable securities	—			14,521			—			—			14,521
	Receivables	—			—			36,574			—			36,574
	Debt issuance costs, net	10,812			—			—			—			10,812
	Deferred tax assets	955			—			234			—			1,189
	Net investment in subsidiaries	1,242,480			46,215			1,578,799			(2,867,494		)	—
	Other	53,858			14,616			320,425			(373,563		)	15,336
	TOTAL ASSETS	$	1,456,649		$	597,625		$	4,072,761		$	(3,241,057	)	$	2,885,978
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	CURRENT LIABILITIES
	Accounts payable	$	1,963		$	15,864		$	36,020		$	—		$	53,847
	Accrued liabilities and other	16,693			8,016			14,611			(1,054		)	38,266
	Debt	—			1,262			309,472			(308,229		)	2,505
	Royalty obligations	—			3,934			44,085			—			48,019
	Reclamation	—			—			794			119			913
	Deferred tax liabilities	—			—			1,011			—			1,011
		18,656			29,076			405,993			(309,164		)	144,561
	NON-CURRENT LIABILITIES
	Debt	305,335			255			64,820			(64,280		)	306,130
	Royalty obligations	—			17,696			47,446			—			65,142
	Reclamation	—			45,894			11,740			(119		)	57,515
	Deferred tax liabilities	37,095			1,618			517,533			—			556,246
	Other long-term liabilities	2,467			544			22,806			—			25,817
	Intercompany payable (receivable)	(637,471		)	427,085			210,386			—			—
		(292,574		)	493,092			874,731			(64,399		)	1,010,850
	STOCKHOLDERS’ EQUITY
	Common stock	1,028			250			122,666			(122,916		)	1,028
	Additional paid-in capital	2,781,164			79,712			3,258,037			(3,337,749		)	2,781,164
	Accumulated deficit	(1,046,719		)	401			(588,666		)	588,265			(1,046,719		)
	Accumulated other comprehensive income (loss)	(4,906		)	(4,906		)	—			4,906			(4,906		)
		1,730,567			75,457			2,792,037			(2,867,494		)	1,730,567
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,456,649		$	597,625		$	4,072,761		$	(3,241,057	)	$	2,885,978
	CONDENSED CONSOLIDATING BALANCE SHEET
	JUNE 30, 2014
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS
	CURRENT ASSETS
	Cash and cash equivalents	$	211,664		$	899		$	56,570		$	—		$	269,133
	Investments	47,642									—			47,642
	Receivables	83			10,420			58,190			—			68,693
	Ore on leach pads	—			44,964			—			—			44,964
	Inventory	—			47,331			90,313			—			137,644
	Deferred tax assets	—			—			35,079			—			35,079
	Prepaid expenses and other	2,573			8,546			12,474			—			23,593
		261,962			112,160			252,626			—			626,748
	NON-CURRENT ASSETS
Property, plant and equipment, net	6,234			153,551			323,002			—			482,787
Mining properties, net	—			235,216			1,493,451			—			1,728,667
Ore on leach pads	—			46,956			—			—			46,956
Restricted assets	830			50			6,630			—			7,510
Marketable securities	—			13,761			—			—			13,761
Receivables	—			—			38,424			—			38,424
Debt issuance costs, net	11,031			—			—			—			11,031
Deferred tax assets	955						(147		)	—			808
Net investment in subsidiaries	1,165,274			24,277			1,601,038			(2,790,589		)	—
Other	55,212			31,601			324,941			(400,924		)	10,830
TOTAL ASSETS	$	1,501,498		$	617,572		$	4,039,965		$	(3,191,513	)	$	2,967,522
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	2,209		$	16,456		$	30,986		$	—		$	49,651
Accrued liabilities and other	19,768			7,370			14,577			(1,083		)	40,632
Debt	5,334			5,637			334,873			(334,279		)	11,565
Royalty obligations	—			4,716			46,371			—			51,087
Reclamation	—			—			633			119			752
Deferred tax liabilities	—			847			1,011			—			1,858
	27,311			35,026			428,451			(335,243		)	155,545
NON-CURRENT LIABILITIES
Debt	452,855			15,345			65,932			(65,562		)	468,570
Royalty obligations	—			18,941			39,564			—			58,505
Reclamation	—			47,467			12,409			(119		)	59,757
Deferred tax liabilities	31,595			1,618			507,019			—			540,232
Other long-term liabilities	2,901			518			24,861			—			28,280
Intercompany payable (receivable)	(669,797		)	437,030			232,767			—			—
	(182,446		)	520,919			882,552			(65,681		)	1,155,344
STOCKHOLDERS’ EQUITY
Common stock	1,034			250			123,167			(123,417		)	1,034
Additional paid-in capital	2,785,761			79,712			3,258,037			(3,337,749		)	2,785,761
Accumulated deficit	(1,127,031		)	(15,226		)	(652,242		)	667,468			(1,127,031		)
Accumulated other comprehensive income (loss)	(3,131		)	(3,109		)	—			3,109			(3,131		)
	1,656,633			61,627			2,728,962			(2,790,589		)	1,656,633
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,501,498		$	617,572		$	4,039,965		$	(3,191,513	)	$	2,967,522

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended				6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Financial information relating to reporting segments	'		'		'		'		'
Total Revenue	$164,562		$204,525		$324,195		$376,322		'
Costs applicable to sales	118,687	[1]	142,386	[1]	225,583	[1]	230,444	[1]	'
Amortization	41,422		56,894		81,849		106,589		'
Exploration	5,153		6,774		9,370		13,615		'
Loss Related to Litigation Settlement	0		32,046		0		32,046		'
Interest and other income	-116		419		-2,100		4,275		'
Interest expense, net	-12,310		-10,930		-25,365		-20,662		'
Loss on termination of revolving credit facility	0		0		-3,035		0		'
Fair value adjustments, net	-8,282		66,754		-19,717		84,550		'
Income tax benefit (expense)	-2,621		-23,673		2,068		-34,918		'
Net income (loss)	-43,121		-35,040		-80,312		-22,770		'
Assets, Net	2,571,728		'		2,571,728		'		2,595,408
Capital expenditures	15,356		27,201		27,292		40,028		'
Palmarejo [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Costs applicable to sales	49,551		55,218		93,126		81,937		'
Amortization	18,044		35,384		36,702		64,166		'
Exploration	1,637		3,189		2,642		5,170		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	325		173		622		341		'
Interest and other income	-1,202		-428		-2,772		1,514		'
Interest expense, net	-2,771		-4,190		-5,595		-7,928		'
Fair value adjustments, net	-4,989		61,066		-15,225		75,494		'
Income tax benefit (expense)	1,342		-17,282		5,171		-20,816		'
Net income (loss)	-4,731		31,419		-11,079		40,293		'
Assets, Net	1,133,851	[2]	1,860,240	[2]	1,133,851	[2]	1,860,240	[2]	'
Capital expenditures	5,589	[3]	9,166	[3]	9,331	[3]	14,480	[3]	'
San Bartolome [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	'		'		56,632		82,377		'
Royalties	'		'		0		0		'
Costs applicable to sales	20,695		32,815		39,595		48,494		'
Amortization	4,855		4,824		9,313		9,464		'
Exploration	57		27		82		79		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	194		117		335		3,954		'
Interest and other income	691		683		1,373		1,288		'
Interest expense, net	-11		-14		-31		-46		'
Fair value adjustments, net	0		0		0		0		'
Income tax benefit (expense)	-2,204		-4,506		-4,969		-8,834		'
Net income (loss)	1,753		7,616		3,680		12,794		'
Assets, Net	309,565	[2]	286,325	[2]	309,565	[2]	286,325	[2]	'
Capital expenditures	1,711	[3]	3,159	[3]	3,152	[3]	3,616	[3]	'
Kensington [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	29,018		30,851		65,079		70,126		'
Royalties	0		0		0		0		'
Total Revenue	29,018		30,851		65,079		70,126		'
Costs applicable to sales	23,218		30,154		51,749		53,718		'
Amortization	11,566		13,159		22,275		26,445		'
Exploration	1,636		563		2,680		1,235		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	199		236		390		412		'
Interest and other income	4		150		4		281		'
Interest expense, net	-53		-95		-75		-354		'
Fair value adjustments, net	0		6,350		0		10,577		'
Income tax benefit (expense)	0		0		0		-1		'
Net income (loss)	-7,650		-6,856		-12,086		-1,181		'
Assets, Net	331,151	[2]	485,215	[2]	331,151	[2]	485,215	[2]	'
Capital expenditures	3,989	[3]	7,406	[3]	8,700	[3]	10,736	[3]	'
Rochester [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	31,193		34,903		55,347		74,377		'
Royalties	0		0		0		0		'
Total Revenue	31,193		34,903		55,347		74,377		'
Costs applicable to sales	24,381		22,516		39,089		43,293		'
Amortization	5,025		1,989		9,476		3,842		'
Exploration	738		512		1,912		996		'
Loss Related to Litigation Settlement	'		32,046		'		-32,046		'
Other operating expenses	844		2,466		2,189		2,938		'
Interest and other income	32		0		51		57		'
Interest expense, net	-261		-5		-266		-11		'
Fair value adjustments, net	-1,837		0		-2,510		0		'
Income tax benefit (expense)	-419		-538		-419		-1,264		'
Net income (loss)	-2,280		-25,169		-463		-9,956		'
Assets, Net	206,665	[2]	122,917	[2]	206,665	[2]	122,917	[2]	'
Capital expenditures	3,956	[3]	6,596	[3]	4,915	[3]	9,894	[3]	'
La Preciosa [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	0		0		0		0		'
Royalties	0		0		0		0		'
Total Revenue	0		0		0		0		'
Costs applicable to sales	0		0		0		0		'
Amortization	22		2		41		2		'
Exploration	26		690		210		690		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	5,711		0		10,668		0		'
Interest and other income	118		-11		-17		-11		'
Interest expense, net	0		0		0		0		'
Fair value adjustments, net	0		0		0		0		'
Income tax benefit (expense)	-1,159		0		-1,271		0		'
Net income (loss)	-6,800		-703		-12,207		-703		'
Assets, Net	412,226	[2]	409,458	[2]	412,226	[2]	409,458	[2]	'
Capital expenditures	3	[3]	735	[3]	141	[3]	735	[3]	'
Coeur Capital [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	1,971		3,479		4,860		6,461		'
Royalties	856		0		1,843		0		'
Total Revenue	2,827		3,479		6,703		6,461		'
Costs applicable to sales	842		1,683		2,024		3,002		'
Amortization	1,419		1,224		3,121		2,052		'
Exploration	109		322		312		630		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	263		-191		504		-245		'
Interest and other income	-964		91		-3,512		138		'
Interest expense, net	0		0		0		0		'
Fair value adjustments, net	0		0		0		0		'
Income tax benefit (expense)	263		-191		-25		-245		'
Net income (loss)	-507		341		-2,795		915		'
Assets, Net	67,864	[2]	31,493	[2]	67,864	[2]	31,493	[2]	'
Capital expenditures	0		0		0		0		'
Other Mining Properties [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	0		-161		0		-662		'
Royalties	0		0		0		0		'
Total Revenue	0		-161		0		-662		'
Costs applicable to sales	0		0		0		0		'
Amortization	491		312		921		618		'
Exploration	950		1,471		1,532		4,815		'
Loss Related to Litigation Settlement	'		0		'		0		'
Other operating expenses	10,622		14,042		24,361		25,016		'
Interest and other income	271		-17,258		-749		-16,219		'
Interest expense, net	-9,214		-6,626		-19,398		-12,323		'
Fair value adjustments, net	-1,456		-662		-1,982		-1,521		'
Income tax benefit (expense)	-444		-1,156		3,581		-3,758		'
Net income (loss)	-22,906		-41,688		-45,362		-64,932		'
Assets, Net	110,406		108,954		110,406		108,954		'
Capital expenditures	108		139		1,053		567		'
Total [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	163,706		204,525		322,352		376,322		'
Royalties	856		0		1,843		0		'
Total Revenue	164,562		204,525		324,195		'		'
Costs applicable to sales	'		142,386		225,583		'		'
Amortization	'		56,894		81,849		'		'
Exploration	5,153		6,774		'		'		'
Loss Related to Litigation Settlement	'		32,046		'		'		'
Other operating expenses	18,158		16,843		39,069		32,416		'
Interest and other income	-1,050		-16,773		-5,622		-12,952		'
Interest expense, net	-12,310		-10,930		'		'		'
Fair value adjustments, net	-8,282		66,754		'		'		'
Net income (loss)	-43,121		-35,040		'		-22,770		'
Assets, Net	'		3,304,602	[2]	'		3,304,602	[2]	'
Capital expenditures	15,356		27,201		27,292		40,028		'
Bolivia [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	29,078		'		'		'		'
Royalties	0		'		'		'		'
Total Revenue	29,078		49,236		56,632		82,377		'
Bolivia [Member] | San Bartolome [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	'		49,236		'		'		'
Royalties	'		0		'		'		'
Total Revenue	'		49,236		'		82,377		'
Mexico [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Total Revenue	72,657		86,217		141,167		143,643		'
Mexico [Member] | Palmarejo [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Metal sales	72,446		86,217		140,434		143,643		'
Royalties	0		0		0		0		'
Total Revenue	$72,446		$86,217		$140,434		$143,643		'
[1]	Excludes amortization.
[2]	Excludes amortization
[3]	Segment assets consist of receivables, prepaids, inventories, property, plant and equipment, and mineral interests

Segment_Reporting_Details_1

Segment Reporting (Details 1) (USD $)	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting [Abstract]	'	'	'	'	'	'
Assets, Net	$2,571,728	'	$2,595,408	'	'	'
Cash and cash equivalents	269,133	272,932	206,690	249,531	331,311	125,440
Short term investments	47,642	'	0	'	'	'
Other assets	79,019	'	83,880	'	'	'
TOTAL ASSETS	$2,967,522	'	$2,885,978	'	'	'

Segment_Reporting_Details_2

Segment Reporting (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Long Lived Assets	'	'	'	'	'
Entity Wide Disclosure on Geographic Areas Long Lived Assets in Entity's Country of Domicile and Foreign Countries	$2,211,454	'	$2,211,454	'	$2,237,774
Revenues	'	'	'	'	'
Total Revenue	164,562	204,525	324,195	376,322	'
United States [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	387,617	'	387,617	'	384,626
Revenues	'	'	'	'	'
Total Revenue	60,212	65,754	120,427	144,502	'
Australia [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	23,858	'	23,858	'	25,668
Revenues	'	'	'	'	'
Total Revenue	1,971	3,479	4,860	6,462	'
Argentina [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	94,495	'	94,495	'	94,705
Bolivia [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	228,606	'	228,606	'	235,085
Revenues	'	'	'	'	'
Total Revenue	29,078	49,236	56,632	82,377	'
Mexico [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	1,461,228	'	1,461,228	'	1,487,228
Revenues	'	'	'	'	'
Total Revenue	72,657	86,217	141,167	143,643	'
Other Foreign Countries [Member]	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	15,650	'	15,650	'	10,462
Revenues	'	'	'	'	'
Total Revenue	$644	($161)	$1,109	($662)	'

Reclamation_Details

Reclamation (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Asset retirement obligation	'	'	'	'	'
Asset retirement obligation - Beginning	$58,460,000	$35,197,000	$57,454,000	$34,457,000	'
Accretion	1,435,000	758,000	2,752,000	1,500,000	'
Settlements	-100,000	-377,000	-411,000	-379,000	'
Asset retirement obligation - Ending	59,795,000	35,578,000	59,795,000	35,578,000	'
Reclamation and Mine Closure (Textual) [Abstract]	'	'	'	'	'
Accrued reclamation liabilities	$700,000	'	$700,000	'	$1,000,000

StockBased_Compensation_Detail

Stock-Based Compensation (Details) (USD $)	6 Months Ended
	Jun. 30, 2014
January 17, 2014 [Member] | Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted stock and Performance shares, grants in period (in shares)	243,351
Granted date fair value of Restricted and Performance shares (in dollars per share)	$11.12
January 17, 2014 [Member] | Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock options, grants in period (in shares)	32,417
Granted date fair value of stock options (in dollars per share)	$4.39
January 17, 2014 [Member] | Performance Shares [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted stock and Performance shares, grants in period (in shares)	345,833
Granted date fair value of Restricted and Performance shares (in dollars per share)	$12.65
March 26, 2014 [Member] | Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted stock and Performance shares, grants in period (in shares)	435,208
Granted date fair value of Restricted and Performance shares (in dollars per share)	$9.31
March 26, 2014 [Member] | Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock options, grants in period (in shares)	382,755
Granted date fair value of stock options (in dollars per share)	$3.74
March 26, 2014 [Member] | Performance Shares [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Restricted stock and Performance shares, grants in period (in shares)	0
Granted date fair value of Restricted and Performance shares (in dollars per share)	$0

StockBased_Compensation_Detail1

Stock-Based Compensation (Details 1) (USD $)	6 Months Ended
	Jun. 30, 2014
Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of exercised units (in shares)	0
Weighted average exercised price (in dollars per share)	$0
Number of exercisable units (in shares)	256,927
Weighted average exercisable price (in dollars price)	$28.91
Stock Appreciation Rights (SARs) [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of exercised units (in shares)	0
Weighted average exercised price (in dollars per share)	$0
Number of exercisable units (in shares)	50,209
Weighted average exercisable price (in dollars price)	$14.15

StockBased_Compensation_Detail2

Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized stock-based compensation cost	$11.80	'	$11.80	'
Unrecognized stock-based compensation cost, weighted-average period recognized	'1 year 9 months 8 days	'	'	'
Annual Incentive Plan and Long Term Incentive Plan [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Compensation expense for stock based compensation awards	$2.40	$1.60	$5	$2.70

Retirement_Savings_Plan_Detail

Retirement Savings Plan (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Postemployment Benefits [Abstract]	'	'	'	'
Percentage of employee compensation plus matching contribution	100.00%	'	'	'
Percentage of maximum limit for employees to contribute their cash compensation	75.00%	'	'	'
Percentage of employee contribution	4.00%	'	'	'
Total plan expenses	$1.60	$0.80	$3	$2.10

Income_and_Mining_Taxes_Detail

Income and Mining Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income tax provision from continuing operations	'	'	'	'
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	($40,500)	($11,367)	($82,380)	$12,148
Income tax provision from continuing operations	-2,621	-23,673	2,068	-34,918
United States - Alternative minimum tax [Member]	'	'	'	'
Income Tax Examination [Line Items]	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Domestic	-31,370	-67,824	-60,214	-61,896
Income tax provision from continuing operations	'	'	'	'
Federal tax expense (benefit)	-146	-1,329	-292	-4,541
Argentina [Member]	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Foreign	-688	-2,989	-2,892	-6,981
Foreign tax expense (benefit)	-349	-117	4,083	-44
Mexico [Member]	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Foreign	-12,710	47,214	-28,716	58,756
Foreign tax expense (benefit)	107	-15,798	3,828	-19,471
Bolivia [Member]	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Foreign	3,957	12,122	8,649	21,628
Foreign tax expense (benefit)	-2,205	-4,556	-4,969	-8,884
Other Countries [Member]	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Income (Loss) from Continuing Operations before Income Taxes, Foreign	311	110	793	641
Foreign tax expense (benefit)	($28)	($1,873)	($582)	($1,978)

Income_and_Mining_Taxes_Detail1

Income and Mining Taxes (Details Textual) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Taxes (Textual) [Abstract]	'	'	'	'
Income tax expense (benefit)	$2,621	$23,673	($2,068)	$34,918

Net_Income_Loss_Per_Share_Deta

Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
					Convertible Senior Notes Due March 2028 [Member]	Convertible Senior Notes Due March 2028 [Member]	Stock Options [Member]	Stock Options [Member]	Stock Options [Member]	Stock Options [Member]
Earnings Per Share (Textual) [Abstract]	'	'	'	'	'	'	'	'	'	'
Number of shares of common stock equivalents related to convertible debt	'	'	'	'	'	'	2,147,989	1,202,100	2,147,390	1,202,100
Debt Instrument, Interest Rate, Stated Percentage	'	'	'	'	3.25%	3.25%	'	'	'	'
Basic EPS	'	'	'	'	'	'	'	'	'	'
Net income (loss) available to common stockholders	($43,121)	($35,040)	($80,312)	($22,770)	'	'	'	'	'	'
Weighted average shares	'	'	'	'	'	'	'	'	'	'
Basic (in shares)	102,444,000	99,833,000	102,405,000	94,918,000	'	'	'	'	'	'
Effect of share based compensation plans (in shares)	0	0	0	0	'	'	'	'	'	'
Diluted (in shares)	102,444,000	99,833,000	102,405,000	94,918,000	'	'	'	'	'	'
Income (loss) per share	'	'	'	'	'	'	'	'	'	'
Basic (in dollars per share)	($0.42)	($0.35)	($0.78)	($0.24)	'	'	'	'	'	'
Diluted (in dollars per share)	($0.42)	($0.35)	($0.78)	($0.24)	'	'	'	'	'	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	($8,282)	$66,754	($19,717)	$84,550
Embedded Derivative Financial Instruments [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	-5,061	61,066	-15,296	75,495
Rochester Royalty Obligation [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	-1,837	0	-2,510	0
Gold Put Purchase and Call Sold Options Net [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	-1,374	6,350	-2,868	10,577
Foreign Exchange Contract [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	-10	-662	957	-1,522
Operating Segments [Member]	'	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	($8,282)	$66,754	'	'

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 1) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jan. 29, 2013
In Thousands, unless otherwise specified
Assets:	'	'	'
Total assets	62,941	14,656	'
Liabilities:	'	'	'
Total liabilities	67,907	63,559	'
Royalty obligation embedded derivative [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	40,338	'
Rochester Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	21,630	'
Other Derivative Instrument [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	240	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	1,591	'
Gold Put Purchase and Call Sold Options Net [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	1,298	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	291	'	'
Short-term Deposit [Member]	'	'	'
Assets:	'	'	'
Short-term Deposits	47,642	14,521	'
Marketable securities [Member]	'	'	'
Assets:	'	'	'
Restricted certificates of deposits	13,761	135	'
Fair Value, Inputs, Level 1 [Member]	'	'	'
Assets:	'	'	'
Total assets	61,403	14,521	'
Liabilities:	'	'	'
Total liabilities	0	0	'
Fair Value, Inputs, Level 1 [Member] | Royalty obligation embedded derivative [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	0	'
Fair Value, Inputs, Level 1 [Member] | Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	'	'
Fair Value, Inputs, Level 1 [Member] | Rochester Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	0	'
Fair Value, Inputs, Level 1 [Member] | Other Derivative Instrument [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	0	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	0	'
Fair Value, Inputs, Level 1 [Member] | Gold Put Purchase and Call Sold Options Net [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	0	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	'	'
Fair Value, Inputs, Level 1 [Member] | Short-term Deposit [Member]	'	'	'
Assets:	'	'	'
Short-term Deposits	47,642	14,521	'
Fair Value, Inputs, Level 1 [Member] | Marketable securities [Member]	'	'	'
Assets:	'	'	'
Restricted certificates of deposits	13,761	0	'
Fair Value, Inputs, Level 2 [Member]	'	'	'
Assets:	'	'	'
Total assets	1,538	135	'
Liabilities:	'	'	'
Total liabilities	291	1,591	'
Fair Value, Inputs, Level 2 [Member] | Royalty obligation embedded derivative [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	0	'
Fair Value, Inputs, Level 2 [Member] | Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	'	'
Fair Value, Inputs, Level 2 [Member] | Rochester Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	0	'
Fair Value, Inputs, Level 2 [Member] | Other Derivative Instrument [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	240	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	1,591	'
Fair Value, Inputs, Level 2 [Member] | Gold Put Purchase and Call Sold Options Net [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	291	'	'
Fair Value, Inputs, Level 2 [Member] | Short-term Deposit [Member]	'	'	'
Assets:	'	'	'
Short-term Deposits	0	0	'
Fair Value, Inputs, Level 2 [Member] | Marketable securities [Member]	'	'	'
Assets:	'	'	'
Restricted certificates of deposits	0	135	'
Fair Value, Inputs, Level 3 [Member]	'	'	'
Assets:	'	'	'
Total assets	0	0	'
Liabilities:	'	'	'
Total liabilities	67,616	61,968	'
Fair Value, Inputs, Level 3 [Member] | Royalty obligation embedded derivative [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	43,960	40,338	'
Fair Value, Inputs, Level 3 [Member] | Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	23,656	'	'
Fair Value, Inputs, Level 3 [Member] | Rochester Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	21,630	'
Fair Value, Inputs, Level 3 [Member] | Other Derivative Instrument [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	0	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	'	0	'
Fair Value, Inputs, Level 3 [Member] | Gold Put Purchase and Call Sold Options Net [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	0	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	0	'	'
Fair Value, Inputs, Level 3 [Member] | Short-term Deposit [Member]	'	'	'
Assets:	'	'	'
Short-term Deposits	0	0	'
Fair Value, Inputs, Level 3 [Member] | Marketable securities [Member]	'	'	'
Assets:	'	'	'
Restricted certificates of deposits	0	0	'
Prepaid Expenses and Other Current Assets [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	1,539	184	'
Prepaid Expenses and Other Current Assets [Member] | Palmarejo gold production royalty [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	'	'	'
Prepaid Expenses and Other Current Assets [Member] | Gold Put Purchase and Call Sold Options Net [Member]	'	'	'
Assets:	'	'	'
Fair value of derivative asset	1,298	135	'
Palmarejo Royalty Obligation [Member] | Royalty obligation embedded derivative [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	43,960	'	'
Rochester Royalty Obligation [Member] | Royalty Obligation [Member]	'	'	'
Liabilities:	'	'	'
Derivative fair value of derivative liability	23,656	'	'
Convertible Senior Notes Due March 2028 [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	3.25%	3.25%	'
Senior Notes due Two Thousand Twenty One [Member]	'	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	7.88%	7.88%	7.88%

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 2) (USD $)	3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014
Palmarejo Royalty Obligation [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance at the beginning of the period	$44,357	$40,338
Revaluation	5,061	15,296
Settlements	-5,458	-11,674
Balance at the end of the period	43,960	43,960
Rochester Royalty Obligation [Member]	'	'
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]	'	'
Balance at the beginning of the period	22,303	21,630
Revaluation	1,837	2,510
Settlements	-484	-484
Balance at the end of the period	$23,656	$23,656

Fair_Value_Measurements_Detail3

Fair Value Measurements (Details 3) (Other Derivative Instrument [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Derivative fair value of derivative liability	$1,591
Fair Value, Inputs, Level 3 [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Derivative fair value of derivative liability	$0

Fair_Value_Measurements_Detail4

Fair Value Measurements (Details 4) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Debt	$468,570	$306,130
Senior Notes due 2021 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Debt	452,855	300,000
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Convertible Senior Notes Due March 2028 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Convertible Debt, Fair Value Disclosures	5,047	5,067
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Convertible Senior Notes Due March 2028 [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Convertible Debt, Fair Value Disclosures	0	5,067
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Convertible Senior Notes Due March 2028 [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Convertible Debt, Fair Value Disclosures	5,047	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Convertible Senior Notes Due March 2028 [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Convertible Debt, Fair Value Disclosures	0	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Senior Notes due 2021 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long-term debt	455,625	307,314
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Senior Notes due 2021 [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long-term debt	0	307,314
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Senior Notes due 2021 [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long-term debt	455,625	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Senior Notes due 2021 [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long-term debt	0	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Palmarejo gold production royalty [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities Not Measured at Fair Value	51,252	65,212
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Palmarejo gold production royalty [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities Not Measured at Fair Value	0	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Palmarejo gold production royalty [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities Not Measured at Fair Value	0	0
Portion at Other than Fair Value, Fair Value Disclosure [Member] | Palmarejo gold production royalty [Member] | Fair Value, Inputs, Level 3 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities Not Measured at Fair Value	51,252	65,212
Reported Value Measurement [Member] | Convertible Senior Notes Due March 2028 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Convertible Debt, Fair Value Disclosures	5,334	5,334
Reported Value Measurement [Member] | Senior Notes due 2021 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Fair value of long-term debt	'	300,000
Reported Value Measurement [Member] | Palmarejo gold production royalty [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Financial Liabilities Not Measured at Fair Value	$41,976	$51,193

Fair_Value_Measurements_Detail5

Fair Value Measurements (Details Textual)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jan. 29, 2013	Jun. 30, 2014	Jun. 30, 2014
	Convertible Senior Notes Due March 2028 [Member]	Convertible Senior Notes Due March 2028 [Member]	Senior Notes due 2021 [Member]	Senior Notes due 2021 [Member]	Senior Notes due 2021 [Member]	Palmarejo [Member]	Rochester [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'	'	'	'	'	'
Expected Royalty Duration	'	'	'	'	'	'2.0	'4.6
Debt Instrument, Interest Rate, Stated Percentage	3.25%	3.25%	7.88%	7.88%	7.88%	'	'

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Details)

3 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

USD ($)

USD ($)

USD ($)

USD ($)

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Silver concentrate sales agreements [Member]

Silver concentrate sales agreements [Member]

Silver concentrate sales agreements [Member]

Silver concentrate sales agreements [Member]

Gold concentrates sales agreements [Member]

Gold concentrates sales agreements [Member]

Gold concentrates sales agreements [Member]

Gold concentrates sales agreements [Member]

Gold put options purchased [Member]

Gold put options purchased [Member]

Gold put options purchased [Member]

Gold put options purchased [Member]

Gold Put Option [Member]

Gold Put Option [Member]

Gold Put Option [Member]

Gold Put Option [Member]

Silver put options purchased [Member]

Silver put options purchased [Member]

Silver put options purchased [Member]

Silver put options purchased [Member]

Silver Put Options Sold [Member]

Silver Put Options Sold [Member]

Silver Put Options Sold [Member]

Silver Put Options Sold [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Mexico peso call options [Member]

Mexico peso call options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Line of Credit [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2014 [Member]

2014 [Member]

2015 [Member]

2015 [Member]

Thereafter [Member]

Thereafter [Member]

2014 [Member]

2014 [Member]

2015 [Member]

2015 [Member]

Thereafter [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

2015 [Member]

Thereafter [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

2013 [Member]

2013 [Member]

2013 [Member]

2013 [Member]

Gold put options purchased [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

2013 [Member]

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) on Derivative Instruments, Net, Pretax

($8,282,000)

$66,754,000

($19,717,000)

$84,550,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative instruments Settlement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, notional amount

'

'

'

'

27,334,000

46,078,000

27,741,000

0

'

'

'

'

'

'

'

'

'

'

'

'

3,253,000

0

0

0

14,865,000

0

0

0

60,000,000

28,800,000

0

0

52,500,000

25,200,000

0

0

45,000,000

22,500,000

0

0

40,000,000

20,000,000

0

0

45,000,000

'

'

'

'

'

'

Derivative average gold price in excess of minimum contractual Deduction Rate

408

'

408

'

913

919

920

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional ounces

'

'

'

'

29,920

50,153

30,168

0

0

0

0

0

0

0

0

0

0

0

0

0

'

0

0

0

'

0

0

0

50,000

24,000

0

0

'

'

'

'

2,500,000

1,250,000

0

0

'

'

'

'

'

'

289,800,000

289,800,000

344,310,000

344,310,000

'

Foreign exchange contracts of MXP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,000,000

'

23,000,000

'

23,000,000

'

'

Fair value of foreign exchange contracts

'

'

'

'

'

'

'

'

$0

'

$0

'

$0

'

$0

'

$0

'

$0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average rate (MXP/$)

'

'

'

'

'

'

'

'

'

0

'

0

'

0

'

0

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14.8

'

12.6

'

14.97

'

Derivative average price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19.99

0

0

0

1,286

0

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding Provisionally Priced Sales Consists of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,559

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding Provisionally Priced Sales Consists of Silver

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

162,724

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average strike price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,200

0

0

1,050

1,050

0

0

18

18

0

0

16

16

0

0

'

'

'

'

'

'

1,200

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Details 1) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	$1,539	$184
Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	292	1,640
Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	22,393	17,650
Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	21,567	22,688
Forward foreign exchange contracts [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	49	38
Forward foreign exchange contracts [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	947
Forward foreign exchange contracts [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Forward foreign exchange contracts [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Palmarejo gold production royalty [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	'	'
Palmarejo gold production royalty [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Palmarejo gold production royalty [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	22,393	17,650
Palmarejo gold production royalty [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	21,567	22,688
Put and call options, net [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	1,298	'
Derivative Liability, Fair Value	291	'
Put and call options, net [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	1,298	135
Put and call options, net [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	291	'
Put and call options, net [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Put and call options, net [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Concentrate sales contracts [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Fair value of derivative asset	192	11
Concentrate sales contracts [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	1	693
Concentrate sales contracts [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Concentrate sales contracts [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative Liability, Fair Value	'	'
Mexican peso forward purchase contracts [Member] | Forward foreign exchange contracts [Member]	'	'
Derivative [Line Items]	'	'
Foreign exchange contracts of MXP	'	$12,000

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	($8,282)	$66,754	($19,717)	$84,550
Fair value adjustments, net	-6,438	66,290	-17,259	82,958
Mexican peso forward purchase contracts [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	-10	-2,260	957	-1,522
Concentrate Sales Contracts [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Sales of Metals	7	-667	872	-2,422
Forward foreign exchange contract [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Costs applicable to sales	0	203	924	-830
Fair value adjustments, net	-10	-662	957	-1,522
Forward Contracts [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	0	1,598	0	0
Palmarejo gold production royalty [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	-5,061	61,066	-15,296	75,495
Gold Put Purchase and Call Sold Options Net [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	($1,374)	$6,350	($2,868)	$10,577

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Details Textual)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jan. 21, 2009

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

USD ($)

Put Option [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Concentrate Sales Contracts [Member]

Concentrate Sales Contracts [Member]

Concentrate Sales Contracts [Member]

Concentrate Sales Contracts [Member]

Gold Put Purchase and Call Sold Options Net [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Maximum [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Instruments Settle in Year One [Member]

Derivative Financial Instruments, Assets [Member]

Derivative Financial Instruments, Assets [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Two [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle in Year Three [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

Prepaid Expenses and Other Current Assets [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

oz

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Put Option [Member]

Gold Put Option [Member]

Put Option on Silver [Member]

Palmarejo gold production royalty [Member]

Gold Put Option [Member]

Silver concentrate sales agreements [Member]

Gold concentrates sales agreements [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

Silver Put Options Sold [Member]

Mexico Peso Call Options [Member]

Mexico Peso Call Options [Member]

Mexico Peso Put Options [Member]

Mexico Peso Put Options [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

Gold Put Option [Member]

Silver concentrate sales agreements [Member]

Gold concentrates sales agreements [Member]

Mexico Peso Put Options [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

Silver Put Options Sold [Member]

Gold Put Option [Member]

Silver concentrate sales agreements [Member]

Gold concentrates sales agreements [Member]

Mexico Peso Put Options [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

Silver Put Options Sold [Member]

Gold Put Option [Member]

Silver concentrate sales agreements [Member]

Gold concentrates sales agreements [Member]

Mexico Peso Put Options [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

Silver Put Options Sold [Member]

USD ($)

USD ($)

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Forward foreign exchange contracts [Member]

Forward foreign exchange contracts [Member]

Gold Put Purchase and Call Sold Options Net [Member]

Gold Put Purchase and Call Sold Options Net [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

oz

Put Option [Member]

Put Option [Member]

oz

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

MXN

Gold put options purchased [Member]

Gold put options purchased [Member]

Silver put options purchased [Member]

oz

oz

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

oz

oz

oz

oz

oz

oz

oz

oz

Put Option [Member]

Put Option [Member]

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

USD ($)

USD ($)

Additional Derivative Financial Instruments and Fair Value of Financial Instruments (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Life of Mine Production, Percentage

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value, Asian Put Options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,000,000

$100,000

Payment made for gold on the end of royalty obligation

'

'

'

'

'

'

'

'

4,167

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty Guarantees, Commitments, Ounces of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total gold remain outstanding

'

'

'

'

'

'

'

'

110,240

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Assumptions, Risk Free Interest Rate

6.10%

4.20%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value liability of the embedded derivative

'

'

'

44,000,000

'

44,000,000

'

40,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company recognized Mark to Market loss

'

'

'

-5,100,000

'

-15,300,000

-75,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

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'

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'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company recognized Mark to Market gain

'

'

'

'

61,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of Gold Production

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Average Gold Price in Excess of Minimum Contractual Deduction Rate

408

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual Inflation Compounding Adjustment

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized losses

'

'

'

-5,500,000

-8,100,000

-11,700,000

-17,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign exchange contracts of MXP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,000,000

'

23,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exchange rate

'

'

'

'

'

'

'

'

'

'

'

'

'

12.21

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exchange rate of MXP

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12.6

'

14.97

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

0

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

Fair value of foreign exchange contracts

'

'

'

'

'

'

'

'

'

'

0

'

0

'

900

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Average Exchange Rate Floor

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12.6

12.6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-45,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-52,500,000

-3,253,000

-14,865,000

-60,000,000

-45,000,000

-40,000,000

'

'

'

'

'

'

'

'

'

-25,200,000

0

0

'

-28,800,000

-22,500,000

-20,000,000

0

0

0

'

0

0

0

0

0

0

'

0

0

0

'

'

'

'

'

'

'

'

Mark-to-market gains and (losses) on forward foreign exchange contract

'

'

'

'

'

'

'

'

'

'

0

-200,000

900,000

-800,000

'

'

'

'

'

'

'

200,000

700,000

400,000

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Liability, Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

291,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Call Feature of Each Collar

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Put Feature of Each Collar

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,200

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contract expiration date

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional ounces

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000

2,500,000

'

289,800,000

289,800,000

344,310,000

344,310,000

'

'

'

74,000

3,750,000

'

0

0

0

24,000

1,250,000

'

'

0

0

0

0

0

'

'

0

0

0

0

0

'

'

'

'

'

'

'

'

'

Average strike price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,050

'

'

'

18

16

'

'

'

'

1,200

'

'

'

'

1,050

'

'

'

1,200

18

16

0

'

'

'

0

0

0

0

'

'

'

0

0

0

'

'

'

'

'

'

'

'

Unrealized gain (loss)

'

'

'

'

'

'

'

'

'

'

0

-700,000

1,000,000

-1,500,000

'

'

'

'

'

'

'

-1,400,000

6,400,000

-2,900,000

10,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of the contract

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,298,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,539,000

184,000

'

'

49,000

38,000

1,298,000

135,000

Outstanding Put Options of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,000

'

'

'

50,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,000

'

'

'

'

'

'

0

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Strike Price of Put Options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,150

17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

16

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding Put Options of Silver

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,250,000

'

'

'

'

'

'

'

'

2,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,250,000

'

'

'

'

'

'

0

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

Sales of Metals

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$7,000

($667,000)

$872,000

($2,422,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Financial Instruments and Fair Value of Financial Instruments (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding provisionally priced sales consists of silver

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

162,724

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding provisionally priced sales consists of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,559

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Average Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19.99

1,286

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

0

0

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

Acquisitions_Details

Acquisitions (Details) (USD $)	0 Months Ended		3 Months Ended		6 Months Ended
	27-May-14	Apr. 16, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition [Line Items]	'	'	'	'	'	'
Shares Issued for Acquisition	'	11,572,918	'	'	'	'
Share Price for Acquisition	'	$14,980	'	'	'	'
Business Acquisition, Effective Date of Acquisition	27-May-14	16-Apr-13	'	'	'	'
Payments to Acquire Royalty Interests in Mining Properties	$2,200,000	'	$12,345,000	$15,480,000	$27,028,000	$30,929,000
La Preciosa Net Smelter Royalty	1.25%	'	'	'	'	'
Payments for Royalties	1,800,000	'	'	'	'	'
Business Acquisition, Date of Acquisition Agreement	2-Sep-14	'	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	'	3,487,000	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets	'	635,000	'	'	'	'
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	'	173,363,000	'	'	'	'
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method	'	'99059	'	'	'	'
Business Combination, Consideration Transferred, Other	'	5,777,000	'	'	'	'
Business Combination, Consideration Transferred, Fees and Expenses Paid	'	17,642,000	'	'	'	'
Business Combination, Consideration Transferred	'	295,841,000	'	'	'	'
Business Combination, Consideration Transferred, Liabilities Assumed, Current	'	2,616,000	'	'	'	'
Business Combination, Consideration Transferred, Deferred Income Taxes Assumed	'	114,339,000	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	'	116,955,000	'	'	'	'
Business Combination, Consideration Transferred, Cost of Acquired Entity	'	412,796,000	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Mineral Interests	'	408,352,000	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	'	322,000	'	'	'	'
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	'	$412,796,000	'	'	'	'
Warrants Issued for Acquisition	'	1,588,768	'	'	'	'
Warrant Price for Acquisition	'	$3,640	'	'	'	'

Investments_Details

Investments (Details) (USD $)	3 Months Ended		6 Months Ended			3 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
					Short-term Investments [Member]	Marketable securities [Member]	Marketable securities [Member]
Available-for-sale Securities	'	'	'	'	'	'	'
Cost	'	'	'	'	$47,661	$17,649	$13,972
Gross Unrealized Losses	'	'	'	'	-31	-3,300	-677
Gross Unrealized Gains	'	'	'	'	12	172	466
Available-for-sale Securities, Estimated Fair Value	'	'	'	'	47,642	14,521	13,761
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]	'	'	'	'	'	'	'
Unrealized Losses Total	'	'	'	'	-31	-3,300	-677
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]	'	'	'	'	'	'	'
Less than twelve Months, Unrealized Losses	'	'	'	'	-31	'	0
Less than twelve Months, Fair Value	'	'	'	'	29,090	'	0
Twelve months or more, Unrealized Losses	'	'	'	'	0	'	-677
Twelve months or more, Fair Value	'	'	'	'	0	'	1,399
Unrealized Losses	'	'	'	'	-31	'	-677
Fair Value	'	'	'	'	29,090	'	1,399
Investment in Marketable Securities (Textual) [Abstract]	'	'	'	'	'	'	'
Unrealized gain (loss) on available for sale securities	-773	-7,491	-401	-11,057	'	'	'
Impairment of marketable securities	$934	$17,192	$3,522	$17,227	'	'	'

Receivables_Details

Receivables (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Allowance for Doubtful Accounts Receivable	'	$0
Receivables - current portion	'	'
Accounts receivable - trade	7,467	17,303
Refundable income tax	7,845	6,240
Refundable value added tax	47,340	49,168
Accounts receivable - other	6,041	8,363
Receivables, net current portion	68,693	81,074
Receivables - non-current portion	'	'
Refundable value added tax	$38,424	$36,574

Metal_and_Other_Inventory_Deta

Metal and Other Inventory (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories	'	'
Concentrate and dore inventory	$19,151	$14,855
Other Inventory, Net of Reserves	52,630	52,250
Supplies	65,863	64,918
Metal and other inventory	137,644	132,023
Ore on Leach Pad, Current	44,964	50,495
Ore on Leach Pad Non Current	46,956	31,528
Inventory, Ore Stockpiles on Leach Pads, Gross	91,920	82,023
Inventory and Ore on Leach Pads	$229,564	$214,046

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, plant and equipment	'	'
Land	$1,764	$1,764
Building improvements	872,575	855,318
Capitalized leases for machinery, equipment and buildings	25,680	16,133
Property, plant and equipment, gross	900,019	873,215
Accumulated depreciation and amortization	-429,904	-395,520
Property Plant and Equipment Net before Construction in Progress	470,115	477,695
Construction in Progress	12,672	8,578
Property, plant and equipment, net	$482,787	$486,273

Mining_Properties_Details

Mining Properties (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Mining Properties	'	'
Operational mining properties:	$657,498	$641,305
Accumulated depletion	-340,459	-315,541
Operational mining properties, net	317,039	325,764
Mineral interest	1,760,834	1,753,129
Accumulated depletion	-349,206	-327,392
Mineral interest, net	1,411,628	1,425,737
Total mining properties	1,728,667	1,751,501
Palmarejo [Member]	'	'
Mining Properties	'	'
Operational mining properties:	158,631	151,845
Accumulated depletion	-116,097	-110,143
Operational mining properties, net	42,534	41,702
Mineral interest	1,146,572	1,146,572
Accumulated depletion	-318,214	-300,187
Mineral interest, net	828,358	846,385
Total mining properties	870,892	888,087
San Bartolome [Member]	'	'
Mining Properties	'	'
Operational mining properties:	70,764	70,761
Accumulated depletion	-24,091	-22,236
Operational mining properties, net	46,673	48,525
Mineral interest	26,643	26,643
Accumulated depletion	-9,434	-8,759
Mineral interest, net	17,209	17,884
Total mining properties	63,882	66,409
Kensington [Member]	'	'
Mining Properties	'	'
Operational mining properties:	275,660	268,351
Accumulated depletion	-92,162	-80,032
Operational mining properties, net	183,498	188,319
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	183,498	188,319
Rochester [Member]	'	'
Mining Properties	'	'
Operational mining properties:	152,443	150,348
Accumulated depletion	-108,109	-103,130
Operational mining properties, net	44,334	47,218
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	44,334	47,218
Endeavor [Member]	'	'
Mining Properties	'	'
Operational mining properties:	0	0
Accumulated depletion	0	0
Operational mining properties, net	0	0
Mineral interest	408,352	408,352
Accumulated depletion	0	0
Mineral interest, net	408,352	408,352
Total mining properties	408,352	408,352
Joaquin Project - Argentina [Member]	'	'
Mining Properties	'	'
Operational mining properties:	0	0
Accumulated depletion	0	0
Operational mining properties, net	0	0
Mineral interest	93,429	93,429
Accumulated depletion	0	0
Mineral interest, net	93,429	93,429
Total mining properties	93,429	93,429
Other Mining Properties [Member]	'	'
Mining Properties	'	'
Operational mining properties:	0	0
Accumulated depletion	0	0
Operational mining properties, net	0	0
Mineral interest	85,838	78,133
Accumulated depletion	-21,558	-18,446
Mineral interest, net	64,280	59,687
Total mining properties	$64,280	$59,687

Debt_Details

Debt (Details) (USD $)

3 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Mar. 12, 2014

Dec. 31, 2013

Jan. 29, 2013

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Feb. 12, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

oz

oz

3.25% Convertible Senior Notes due March 2028 [Member]

3.25% Convertible Senior Notes due March 2028 [Member]

Senior Notes due 2021 [Member]

Senior Notes due 2021 [Member]

Senior Notes due 2021 [Member]

Senior Notes due 2021 [Member]

Palmarejo gold production royalty [Member]

Capital Lease Obligations [Member]

Capital Lease Obligations [Member]

Palmarejo gold production royalty [Member]

Maximum [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Senior Notes due Two Thousand Twenty One [Member]

Senior Notes due Two Thousand Twenty One [Member]

Capital Lease Obligations [Member]

Capital Lease Obligations [Member]

oz

Palmarejo gold production royalty [Member]

oz

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Carrying Amount of Equity Component

'

'

'

'

'

$10,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Effective Percentage

'

'

'

'

'

'

'

'

'

'

'

30.50%

'

'

'

'

'

'

'

'

'

'

'

Royalty Guarantees, Commitments, Ounces of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

'

'

'

'

'

Minimum Obligation Paid in Monthly Payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,167

'

'

'

'

'

'

'

'

Annual Inflation Compounding Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

Percentage of Actual Gold Production

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long term debt and capital lease obligations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current

11,565,000

'

11,565,000

'

2,505,000

'

'

'

'

'

'

'

'

'

'

'

'

0

48,700,000

0

0

6,231,000

2,505,000

Debt Instrument, Face Amount

'

'

'

'

'

0

5,334,000

450,000,000

150,000,000

'

300,000,000

'

'

'

'

'

5,334,000

'

'

'

'

'

'

Non-current

468,570,000

'

468,570,000

'

306,130,000

'

'

452,855,000

'

300,000,000

'

'

15,715,000

796,000

'

'

'

'

'

'

'

'

'

Payment of Royalty on Ounces of Gold

289,760

'

289,760

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Base Average Gold Price in Excess of Minimum Contractual Deduction Rate

400

'

400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expenses incurred for various debt instruments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Paid on Senior Notes due 2021

8,859,000

5,906,000

15,323,000

10,041,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Paid on Convertible Notes due 2028

43,000

43,000

86,000

380,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Commitment Fee Amount

0

133,000

179,000

258,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Write off revolver costs, interest expense

0

'

3,035,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Paid on Capital Leases

333,000

98,000

392,000

266,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Expense

0

72,000

0

268,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accretion of Franco Nevada royalty obligation

2,898,000

4,107,000

6,094,000

8,170,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of debt issuance costs

420,000

539,000

918,000

1,064,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accretion of debt discount

-108,000

0

-144,000

576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capitalized interest

-135,000

32,000

-518,000

-361,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total interest expense, net of capitalized interest

$12,310,000

$10,930,000

$25,365,000

$20,662,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Details_Textual

Debt (Details Textual) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

27-May-14

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Mar. 12, 2014

Dec. 31, 2013

Jan. 29, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Feb. 12, 2013

Jun. 30, 2014

oz

oz

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Senior Notes due Two Thousand Twenty One [Member]

Senior Notes due Two Thousand Twenty One [Member]

Senior Notes due Two Thousand Twenty One [Member]

Senior Notes due Two Thousand Twenty One [Member]

Banco Bisa Line of Credit [Member]

Banco de Credito Line of Credit [Member]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

3.25% Convertible Senior Notes due March 2028 [Member]

3.25% Convertible Senior Notes due March 2028 [Member]

3.25% Convertible Senior Notes due March 2028 [Member]

Palmarejo [Member]

oz

Maximum [Member]

oz

Debt and capital lease obligations (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on notes

'

'

'

'

'

'

3.25%

3.25%

7.88%

'

7.88%

7.88%

'

'

'

'

'

3.25%

'

'

'

Debt Instrument, Face Amount

'

'

'

'

'

'

$0

$5,334,000

$450,000,000

$150,000,000

'

$300,000,000

'

'

'

'

'

$5,334,000

'

'

'

Debt

'

11,565,000

'

11,565,000

'

2,505,000

'

'

'

'

'

'

'

'

'

'

'

'

0

48,700,000

'

Debt Instrument, Repurchased Face Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43,300,000

'

'

'

Interest Expense, Debt

'

0

72,000

0

268,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accretion of debt discount

'

-108,000

0

-144,000

576,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate on the notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30.50%

'

'

'

'

'

'

Borrowing under term facility

'

100,000,000

'

100,000,000

'

'

'

'

'

'

'

'

7,000,000

4,000,000

'

'

'

'

'

'

'

Line of credit facility, increase, additional borrowings

'

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Write off revolver costs, interest expense

'

0

'

3,035,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, commitment fee amount

'

0

133,000

179,000

258,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Interest Rate at Period End

'

'

'

'

'

'

'

'

'

'

'

'

2.75%

3.00%

'

'

'

'

'

'

'

Line of Credit Facility, Amount Outstanding

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss on termination of revolving credit facility

'

0

0

3,035,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty Guarantees, Commitments, Ounces of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

'

'

Percentage of Actual Gold Production

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Base Average Gold Price in Excess of Minimum Contractual Deduction Rate

'

400

'

400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment of Royalty on Ounces of Gold

'

289,760

'

289,760

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Further Payment Made on Number of Additional Ounces of Gold

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

110,240

'

'

'

'

'

Payments to Acquire Royalty Interests in Mining Properties

2,200,000

12,345,000

15,480,000

27,028,000

30,929,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected Royalty Duration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2.0

Additional Long term debt and capital lease obligations(Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Implicit Interest Rate

'

30.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accretion of Royalty Obligation

'

2,898,000

4,107,000

6,094,000

8,170,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining Minimum Obligation Under Royalty Agreements

'

42,000,000

'

42,000,000

'

51,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expensed Interest

'

12,310,000

10,930,000

25,365,000

20,662,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capitalized interest

'

-135,000

32,000

-518,000

-361,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Carrying Amount of Equity Component

'

'

'

'

'

'

$10,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Supplemental_Guarantor_Informa2

Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended				6 Months Ended				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Mar. 12, 2014	Dec. 31, 2013	Jan. 29, 2013
									Coeur Mining, Inc.	Coeur Mining, Inc.	Coeur Mining, Inc.	Coeur Mining, Inc.	Guarantor Subsidiaries	Guarantor Subsidiaries	Guarantor Subsidiaries	Guarantor Subsidiaries	Non-Guarantor Subsidiaries	Non-Guarantor Subsidiaries	Non-Guarantor Subsidiaries	Non-Guarantor Subsidiaries	Eliminations	Eliminations	Eliminations	Eliminations	Senior Notes due Two Thousand Twenty One [Member]	Senior Notes due Two Thousand Twenty One [Member]	Senior Notes due Two Thousand Twenty One [Member]	Senior Notes due Two Thousand Twenty One [Member]
Condensed Financial Statements, Captions [Line Items]	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Debt Instrument, Face Amount	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	$450,000	$150,000	'	$300,000
Total Revenue	164,562		204,525		324,195		376,322		0	0	0	0	60,748	65,754	121,248	144,502	103,814	138,771	202,947	231,820	0	0	0	0	'	'	'	'
Costs applicable to sales	118,687	[1]	142,386	[1]	225,583	[1]	230,444	[1]	0	0	0	0	47,599	52,669	90,837	97,010	71,088	89,717	134,746	133,434	0	0	0	0	'	'	'	'
Amortization	41,422		56,894		81,849		106,589		448	231	825	450	16,784	15,151	32,080	30,295	24,190	41,512	48,944	75,844	0	0	0	0	'	'	'	'
General and Administrative Expense	9,398		15,026		23,294		25,253		9,716	12,617	22,768	22,354	-163	1,375	3	1,542	-155	1,034	523	1,357	0	0	0	0	'	'	'	'
Exploration Expense, Mining	5,153		6,774		9,370		13,615		950	314	1,536	663	2,483	1,398	4,904	2,862	1,720	5,062	2,930	10,090	0	0	0	0	'	'	'	'
Loss Related to Litigation Settlement	0		32,046		0		32,046		'	0	'	0	'	32,046	'	32,046	'	0	'	0	'	0	'	0	'	'	'	'
Pre-development, reclamation, and other	8,760		1,817		15,775		7,163		352	0	352	0	1,307	1,135	2,843	1,563	7,101	682	12,580	5,600	0	0	0	0	'	'	'	'
Total cost and expenses	183,420		254,943		355,871		415,110		11,466	13,162	25,481	23,467	68,010	103,774	130,667	165,318	103,944	138,007	199,723	226,325	0	0	0	0	'	'	'	'
Loss on termination of revolving credit facility	0		0		-3,035		0		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Gain (Loss) on Derivative Instruments, Net, Pretax	-8,282		66,754		-19,717		84,550		-1,456	-662	-1,982	-1,522	-1,837	6,350	-2,510	10,577	-4,989	61,066	-15,225	75,495	0	0	0	0	'	'	'	'
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	-934		'		-3,522		'		0	-17,192	0	-17,227	-934	0	-3,522	0	0	0	0	0	0	0	0	0	'	'	'	'
Impairment of marketable securities	934		17,192		3,522		17,227		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Interest and other income	-116		419		-2,100		4,275		1,075	1,309	1,915	2,208	12	241	58	475	-507	-247	-2,720	3,316	-696	-884	-1,353	-1,724	'	'	'	'
Interest expense, net	-12,310		-10,930		-25,365		-20,662		-9,215	-6,623	-19,398	-12,320	-314	-100	-340	-364	-3,477	-5,091	-6,980	-9,702	696	884	1,353	1,724	'	'	'	'
Nonoperating Income (Expense)	-21,642		39,051		-50,704		50,936		-9,596	-23,168	-19,465	-28,861	-3,073	6,491	-6,314	10,688	-8,973	55,728	-24,925	69,109	0	0	0	0	'	'	'	'
Income before income taxes	-40,500		-11,367		-82,380		12,148		-21,062	-36,330	-44,946	-52,328	-10,335	-31,529	-15,733	-10,128	-9,103	56,492	-21,701	74,604	0	0	0	0	'	'	'	'
Income tax benefit (expense)	-2,621		-23,673		2,068		-34,918		273	-824	127	-3,310	-419	-730	-419	-1,510	-2,475	-22,119	2,360	-30,098	0	0	0	0	'	'	'	'
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-43,121		-35,040		-80,312		-22,770		-20,789	-37,154	-44,819	-55,638	-10,754	-32,259	-16,152	-11,638	-11,578	34,373	-19,341	44,506	0	0	0	0	'	'	'	'
Income (Loss) from Equity Method Investments	0		0		0		0		-22,332	2,114	-35,493	32,868	121	0	299	0	0	0	0	0	22,211	-2,114	35,194	-32,868	'	'	'	'
NET INCOME (LOSS)	-43,121		-35,040		-80,312		-22,770		-43,121	-35,040	-80,312	-22,770	-10,633	-32,259	-15,853	-11,638	-11,578	34,373	-19,341	44,506	22,211	-2,114	35,194	-32,868	'	'	'	'
Marketable Securities, Unrealized Gain (Loss)	'		'		'		'		-773	-7,491	'	-11,057	-847	0	'	0	0	0	'	0	847	0	'	0	'	'	'	'
Prior Period Reclassification Adjustment	'		'		'		'		572	17,192	'	'	572	0	'	'	0	0	'	'	-572	0	'	'	'	'	'	'
Unrealized gain (loss) on available for sale securities	-773		-7,491		-401		-11,057		'	'	-401	'	'	'	-380	'	'	'	0	'	'	'	380	'	'	'	'	'
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	17		0		17		0		17	'	17	-17,227	17	'	17	0	0	'	0	0	-17	'	-17	0	'	'	'	'
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax	572		17,192		2,159		17,227		'	'	2,159	'	'	'	2,159	'	'	'	0	'	'	'	-2,159	'	'	'	'	'
Other comprehensive income (loss)	-184		9,701		1,775		6,170		-184	9,701	1,775	6,170	-258	0	1,796	0	0	0	0	0	258	0	-1,796	0	'	'	'	'
COMPREHENSIVE INCOME	($43,305)		($25,339)		($78,537)		($16,600)		($43,305)	($25,339)	($78,537)	($16,600)	($10,891)	($32,259)	($14,057)	($11,638)	($11,578)	$34,373	($19,341)	$44,506	$22,469	($2,114)	$33,398	($32,868)	'	'	'	'
Debt Instrument, Interest Rate, Stated Percentage	'		'		'		'		'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	7.88%	'	7.88%	7.88%
[1]	Excludes amortization.

Supplemental_Guarantor_Informa3

Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Payments to Acquire Businesses, Net of Cash Acquired	($2,250)	'	'	'
Payments to Acquire Mineral Rights	-2,250	-101,648	-2,250	-113,214
Net Cash Provided by (Used in) Operating Activities	30,490	63,338	20,864	76,272
Capital expenditures	-15,356	-27,201	-27,292	-40,028
Payments to Acquire Investments	-2,139	-683	-48,360	-5,332
Payments for (Proceeds from) Investments	800	1,522	890	6,344
Proceeds from Discontinued Operations Sale of Assets and Other	12	254	-13	1,209
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0
Net Cash Provided by (Used in) Investing Activities	-18,933	-127,756	-77,025	-151,021
Issuance of notes and bank borrowings	0	0	153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	-2,851	-1,857	-6,962	-57,197
Payments to Acquire Royalty Interests in Mining Properties	-12,345	-15,480	-27,028	-30,929
Payments for Repurchase of Common Stock	0	0	0	-12,557
Proceeds From Repayment Intercompany Borrowings	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	-160	-25	-406	-477
CASH USED IN FINANCING ACTIVITIES:	-15,356	-17,362	118,604	198,840
Cash and Cash Equivalents, Period Increase (Decrease)	-3,799	-81,780	62,443	124,091
Cash and Cash Equivalents, at Carrying Value	269,133	249,531	269,133	249,531
Coeur Mining, Inc.	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Payments to Acquire Businesses, Net of Cash Acquired	0	-101,648	0	-113,214
Net Cash Provided by (Used in) Operating Activities	-35,100	-4,114	-72,723	18,860
Capital expenditures	-106	-129	-1,051	-557
Payments to Acquire Investments	-2,106	0	-47,903	-1,598
Payments for (Proceeds from) Investments	217	1,498	307	2,873
Proceeds from Discontinued Operations Sale of Assets and Other	0	-18	0	-6
Payments to Acquire Interest in Subsidiaries and Affiliates	65,832	-5,602	78,993	-36,355
Net Cash Provided by (Used in) Investing Activities	63,837	-105,899	30,346	-148,857
Issuance of notes and bank borrowings	'	'	153,000	300,000
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	-403	0	-3,599	-52,565
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock	'	'	'	-12,557
Proceeds From Repayment Intercompany Borrowings	-20,555	-11,666	-32,030	-4,311
Proceeds from (Payments for) Other Financing Activities	-160	-25	-406	-477
CASH USED IN FINANCING ACTIVITIES:	-21,118	-11,691	116,965	230,090
Cash and Cash Equivalents, Period Increase (Decrease)	7,619	-121,704	74,588	100,093
Cash and Cash Equivalents, at Carrying Value	211,664	186,881	211,664	186,881
Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Payments to Acquire Businesses, Net of Cash Acquired	-2,250	0	-2,250	0
Net Cash Provided by (Used in) Operating Activities	4,210	3,768	9,142	20,659
Capital expenditures	-7,945	-14,003	-13,615	-20,629
Payments to Acquire Investments	-33	-23	-457	-39
Payments for (Proceeds from) Investments	583	24	583	38
Proceeds from Discontinued Operations Sale of Assets and Other	4	205	4	443
Payments to Acquire Interest in Subsidiaries and Affiliates	-121	'	-299	0
Net Cash Provided by (Used in) Investing Activities	-9,762	-13,797	-16,034	-20,187
Issuance of notes and bank borrowings	'	'	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	-2,131	-715	-2,543	-1,955
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock	'	'	'	0
Proceeds From Repayment Intercompany Borrowings	7,828	11,183	9,343	1,806
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	5,697	10,468	6,800	-149
Cash and Cash Equivalents, Period Increase (Decrease)	145	439	-92	323
Cash and Cash Equivalents, at Carrying Value	899	723	899	723
Non-Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	39,169	65,798	49,251	69,621
Capital expenditures	-7,305	-13,069	-12,626	-18,842
Payments to Acquire Investments	0	-660	0	-3,695
Payments for (Proceeds from) Investments	0	0	0	3,433
Proceeds from Discontinued Operations Sale of Assets and Other	8	67	-17	772
Payments to Acquire Interest in Subsidiaries and Affiliates	0	3,488	0	3,487
Net Cash Provided by (Used in) Investing Activities	-7,297	-10,174	-12,643	-14,845
Issuance of notes and bank borrowings	'	'	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	-317	-1,142	-820	-2,677
Payments to Acquire Royalty Interests in Mining Properties	-12,345	-15,480	-27,028	-30,929
Payments for Repurchase of Common Stock	'	'	'	0
Proceeds From Repayment Intercompany Borrowings	-30,773	483	-20,813	2,505
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	-43,435	-16,139	-48,661	-31,101
Cash and Cash Equivalents, Period Increase (Decrease)	-11,563	39,485	-12,053	23,675
Cash and Cash Equivalents, at Carrying Value	56,570	61,927	56,570	61,927
Eliminations	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Payments to Acquire Businesses, Net of Cash Acquired	0	0	0	0
Net Cash Provided by (Used in) Operating Activities	22,211	-2,114	35,194	-32,868
Capital expenditures	0	0	0	0
Payments to Acquire Investments	0	0	0	0
Payments for (Proceeds from) Investments	0	0	0	0
Proceeds from Discontinued Operations Sale of Assets and Other	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	-65,711	2,114	-78,694	32,868
Net Cash Provided by (Used in) Investing Activities	-65,711	2,114	-78,694	32,868
Issuance of notes and bank borrowings	'	'	0	0
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	0	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	0	0	0	0
Payments for Repurchase of Common Stock	'	'	'	0
Proceeds From Repayment Intercompany Borrowings	43,500	0	43,500	0
Proceeds from (Payments for) Other Financing Activities	0	0	0	0
CASH USED IN FINANCING ACTIVITIES:	43,500	0	43,500	0
Cash and Cash Equivalents, Period Increase (Decrease)	0	0	0	0
Cash and Cash Equivalents, at Carrying Value	$0	$0	$0	$0

Supplemental_Guarantor_Informa4

Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jan. 29, 2013
In Thousands, unless otherwise specified
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash and cash equivalents	$269,133	$206,690	'
Investments	47,642	0	'
Receivables	68,693	81,074	'
Ore on leach pads	44,964	50,495	'
Inventory	137,644	132,023	'
Deferred tax assets	35,079	35,008	'
Prepaid expenses and other	23,593	25,940	'
Assets, Current	626,748	531,230	'
Property, plant and equipment, net	482,787	486,273	'
Mining properties, net	1,728,667	1,751,501	'
Ore on leach pads	46,956	31,528	'
Restricted assets	7,510	7,014	'
Marketable securities	13,761	14,521	'
Receivables	38,424	36,574	'
Unamortized Debt Issuance Expense	11,031	10,812	'
Deferred tax assets	808	1,189	'
Other Assets, Noncurrent	10,830	15,336	'
TOTAL ASSETS	2,967,522	2,885,978	'
Accounts payable	49,651	53,847	'
Accrued liabilities and other	40,632	38,266	'
Debt	11,565	2,505	'
Royalty obligations	51,087	48,019	'
Reclamation	752	913	'
Deferred tax liabilities	1,858	1,011	'
Liabilities, Current	155,545	144,561	'
Debt	468,570	306,130	'
Royalty obligations	58,505	65,142	'
Reclamation	59,757	57,515	'
Deferred tax liabilities	540,232	556,246	'
Other long-term liabilities	28,280	25,817	'
Intercompany Payable Receivable	0	0	'
Non-current liabilities	1,155,344	1,010,850	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	0	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	1,034	1,028	'
Additional paid-in capital	2,785,761	2,781,164	'
Accumulated deficit	-1,127,031	-1,046,719	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-3,131	-4,906	'
Stockholders' Equity Attributable to Parent	1,656,633	1,730,567	'
Liabilities and Equity	2,967,522	2,885,978	'
Coeur Mining, Inc.	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash and cash equivalents	211,664	137,076	'
Investments	47,642	0	'
Receivables	83	530	'
Ore on leach pads	0	0	'
Inventory	0	0	'
Deferred tax assets	0	0	'
Prepaid expenses and other	2,573	4,128	'
Assets, Current	261,962	141,734	'
Property, plant and equipment, net	6,234	5,980	'
Mining properties, net	0	0	'
Ore on leach pads	0	0	'
Restricted assets	830	830	'
Marketable securities	0	0	'
Receivables	0	0	'
Unamortized Debt Issuance Expense	11,031	10,812	'
Deferred tax assets	955	955	'
Other Assets, Noncurrent	55,212	53,858	'
TOTAL ASSETS	1,501,498	1,456,649	'
Accounts payable	2,209	1,963	'
Accrued liabilities and other	19,768	16,693	'
Debt	5,334	0	'
Royalty obligations	0	0	'
Reclamation	0	0	'
Deferred tax liabilities	0	0	'
Liabilities, Current	27,311	18,656	'
Debt	452,855	305,335	'
Royalty obligations	0	0	'
Reclamation	0	0	'
Deferred tax liabilities	31,595	37,095	'
Other long-term liabilities	2,901	2,467	'
Intercompany Payable Receivable	-669,797	-637,471	'
Non-current liabilities	-182,446	-292,574	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,165,274	1,242,480	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	1,034	1,028	'
Additional paid-in capital	2,785,761	2,781,164	'
Accumulated deficit	-1,127,031	-1,046,719	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-3,131	-4,906	'
Stockholders' Equity Attributable to Parent	1,656,633	1,730,567	'
Liabilities and Equity	1,501,498	1,456,649	'
Guarantor Subsidiaries	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash and cash equivalents	899	991	'
Investments	'	0	'
Receivables	10,420	19,982	'
Ore on leach pads	44,964	50,495	'
Inventory	47,331	35,290	'
Deferred tax assets	0	0	'
Prepaid expenses and other	8,546	5,282	'
Assets, Current	112,160	112,040	'
Property, plant and equipment, net	153,551	143,118	'
Mining properties, net	235,216	235,537	'
Ore on leach pads	46,956	31,528	'
Restricted assets	50	50	'
Marketable securities	13,761	14,521	'
Receivables	0	0	'
Unamortized Debt Issuance Expense	0	0	'
Deferred tax assets	'	0	'
Other Assets, Noncurrent	31,601	14,616	'
TOTAL ASSETS	617,572	597,625	'
Accounts payable	16,456	15,864	'
Accrued liabilities and other	7,370	8,016	'
Debt	5,637	1,262	'
Royalty obligations	4,716	3,934	'
Reclamation	0	0	'
Deferred tax liabilities	847	0	'
Liabilities, Current	35,026	29,076	'
Debt	15,345	255	'
Royalty obligations	18,941	17,696	'
Reclamation	47,467	45,894	'
Deferred tax liabilities	1,618	1,618	'
Other long-term liabilities	518	544	'
Intercompany Payable Receivable	437,030	427,085	'
Non-current liabilities	520,919	493,092	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	24,277	46,215	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	250	250	'
Additional paid-in capital	79,712	79,712	'
Accumulated deficit	-15,226	401	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-3,109	-4,906	'
Stockholders' Equity Attributable to Parent	61,627	75,457	'
Liabilities and Equity	617,572	597,625	'
Non-Guarantor Subsidiaries	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash and cash equivalents	56,570	68,623	'
Investments	'	0	'
Receivables	58,190	60,562	'
Ore on leach pads	0	0	'
Inventory	90,313	96,733	'
Deferred tax assets	35,079	35,008	'
Prepaid expenses and other	12,474	16,530	'
Assets, Current	252,626	277,456	'
Property, plant and equipment, net	323,002	337,175	'
Mining properties, net	1,493,451	1,515,964	'
Ore on leach pads	0	0	'
Restricted assets	6,630	6,134	'
Marketable securities	0	0	'
Receivables	38,424	36,574	'
Unamortized Debt Issuance Expense	0	0	'
Deferred tax assets	-147	234	'
Other Assets, Noncurrent	324,941	320,425	'
TOTAL ASSETS	4,039,965	4,072,761	'
Accounts payable	30,986	36,020	'
Accrued liabilities and other	14,577	14,611	'
Debt	334,873	309,472	'
Royalty obligations	46,371	44,085	'
Reclamation	633	794	'
Deferred tax liabilities	1,011	1,011	'
Liabilities, Current	428,451	405,993	'
Debt	65,932	64,820	'
Royalty obligations	39,564	47,446	'
Reclamation	12,409	11,740	'
Deferred tax liabilities	507,019	517,533	'
Other long-term liabilities	24,861	22,806	'
Intercompany Payable Receivable	232,767	210,386	'
Non-current liabilities	882,552	874,731	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,601,038	1,578,799	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	123,167	122,666	'
Additional paid-in capital	3,258,037	3,258,037	'
Accumulated deficit	-652,242	-588,666	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	0	'
Stockholders' Equity Attributable to Parent	2,728,962	2,792,037	'
Liabilities and Equity	4,039,965	4,072,761	'
Eliminations	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash and cash equivalents	0	0	'
Investments	0	0	'
Receivables	0	0	'
Ore on leach pads	0	0	'
Inventory	0	0	'
Deferred tax assets	0	0	'
Prepaid expenses and other	0	0	'
Assets, Current	0	0	'
Property, plant and equipment, net	0	0	'
Mining properties, net	0	0	'
Ore on leach pads	0	0	'
Restricted assets	0	0	'
Marketable securities	0	0	'
Receivables	0	0	'
Unamortized Debt Issuance Expense	0	0	'
Deferred tax assets	0	0	'
Other Assets, Noncurrent	-400,924	-373,563	'
TOTAL ASSETS	-3,191,513	-3,241,057	'
Accounts payable	0	0	'
Accrued liabilities and other	-1,083	-1,054	'
Debt	-334,279	-308,229	'
Royalty obligations	0	0	'
Reclamation	119	119	'
Deferred tax liabilities	0	0	'
Liabilities, Current	-335,243	-309,164	'
Debt	-65,562	-64,280	'
Royalty obligations	0	0	'
Reclamation	-119	-119	'
Deferred tax liabilities	0	0	'
Other long-term liabilities	0	0	'
Intercompany Payable Receivable	0	0	'
Non-current liabilities	-65,681	-64,399	'
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	-2,790,589	-2,867,494	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 103,485,960 at June 30, 2014 and 102,843,003 at December 31, 2013	-123,417	-122,916	'
Additional paid-in capital	-3,337,749	-3,337,749	'
Accumulated deficit	667,468	588,265	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	3,109	4,906	'
Stockholders' Equity Attributable to Parent	-2,790,589	-2,867,494	'
Liabilities and Equity	-3,191,513	-3,241,057	'
Senior Notes due Two Thousand Twenty One [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Debt	$452,855	$300,000	'
Debt Instrument, Interest Rate, Stated Percentage	7.88%	7.88%	7.88%

Commitments_and_Contigencies_D

Commitments and Contigencies (Details Textual) (USD $)

0 Months Ended

3 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

0 Months Ended

1 Months Ended

Jan. 21, 2009

Jun. 30, 2014

Jun. 30, 2013

Oct. 14, 2009

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2013

Jul. 07, 1995

Jun. 30, 2014

Jul. 07, 1995

Jul. 07, 1995

Jun. 05, 2012

Feb. 28, 2010

oz

m

Rochester [Member]

Rochester [Member]

Rochester [Member]

Echo Bay [Member]

Kensington [Member]

Kensington [Member]

Coeur Alaska Inc [Member]

Hazardous Waste On-Site [Member]

Hazardous Waste On-Site [Member]

oz

Callahan Mining Corporation [Member]

Callahan Mining Corporation [Member]

defendant

Other Commitments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Litigation Settlement, Expense

'

'

$32,000,000

'

'

'

'

'

'

'

'

'

'

Commitment and Contingencies (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition of ownership interest

'

'

'

'

'

'

'

50.00%

'

100.00%

'

'

'

Volume related to net smelter return royalty of future gold production

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

Purchase price and construction and development expenses

'

'

'

'

'

'

'

'

'

'

32,500,000

'

'

Minimum royalty range for gold price per ounce

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

Gold price per ounce for minimum royalty range

'

'

'

'

'

'

'

'

400

'

'

'

'

Maximum royalty range for gold price per ounce

'

'

'

'

5.00%

'

'

'

2.50%

'

'

'

'

Maximum royalty payable

'

'

'

'

250,000

'

'

'

'

'

'

'

'

Gold price per ounce for maximum royalty range

'

'

'

'

23.6

'

'

'

475

'

'

'

'

Royalty expenses

'

'

'

'

0

0

1,000,000

'

'

'

'

'

'

Litigation Settlement, Amount

'

'

10,000,000

'

'

'

'

'

'

'

'

'

3,500,000

Number of defendants

'

'

'

'

'

'

'

'

'

'

'

5

'

Maximum Height for Temporary Restriction on Mining

'

'

'

4,400

'

'

'

'

'

'

'

'

'

NSR royalty percentage

'

'

3.40%

'

'

'

'

'

'

'

'

'

'

NSR royalty maximum amount

'

'

$39,400,000

'

'

'

'

'

'

'

'

'

'

Number of labor agreements in South America

'

1

'

'

'

'

'

'

'

'

'

'

'

Percentage of labor force covered by collective bargaining agreements

'

9.90%

'

'

'

'

'

'

'

'

'

'

'

Royalty to be capped in terms of ounces of production

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

Purchased royalty

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

Royalty agreement minimum obligation for the period

'

400,000

'

'

'

'

'

'

'

'

'

'

'

Royalty Agreement Minimum Obligation for Per Month

'

4,167

'

'

'

'

'

'

'

'

'

'

'

Royalty Agreement Period

'8 years

'

'

'

'

'

'

'

'

'

'

'

'