Coeur Mining (CDE) 10-Q 6 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 05, 2013
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-Sep-13	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'CDE	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	100,530,862

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
CURRENT ASSETS	'	'
Cash and cash equivalents	$211,434	$125,440
Short term investments	0	999
Receivables	74,417	62,438
Ore on leach pad	39,880	22,991
Metal and other inventory	123,537	170,670
Deferred tax assets	2,713	2,458
Restricted assets	2,015	396
Prepaid expenses and other	26,778	20,790
Total Current Assets	480,774	406,182
NON-CURRENT ASSETS	'	'
Property, plant and equipment, net	649,591	684,002
Mining properties, net	2,365,999	1,991,809
Ore on leach pad, non-current portion	31,966	21,356
Restricted assets	24,914	24,970
Marketable securities	'	27,065
Receivables, non-current portion	37,191	48,767
Debt issuance costs, net	11,351	3,713
Deferred tax assets	1,104	955
Other	16,411	12,582
TOTAL ASSETS	3,636,917	3,221,401
CURRENT LIABILITIES	'	'
Accounts payable	63,610	57,482
Accrued liabilities and other	9,589	10,002
Accrued income taxes	8,529	27,108
Accrued payroll and related benefits	19,295	21,306
Accrued interest payable	4,028	478
Current portion of debt and capital leases	3,868	55,983
Current portion of royalty obligation	49,069	65,104
Current portion of reclamation and mine closure	443	668
Deferred tax liabilities	121	121
Total Current Liabilities	158,552	238,252
NON-CURRENT LIABILITIES	'	'
Long-term debt and capital leases	306,372	3,460
Non-current portion of royalty obligation	90,892	141,879
Reclamation and mine closure	55,872	34,670
Deferred tax liabilities	709,910	577,488
Other long-term liabilities	23,371	27,372
Total Noncurrent Liabilities	1,186,417	784,869
COMMITMENTS AND CONTINGENCIES (Note 17)	'	'
SHAREHOLDERS' EQUITY	'	'
Common stock, par value $0.01 per share; authorized 150,000,000 shares, issued and outstanding 100,548,811 at September 30, 2013 and 90,342,338 at December 31, 2012	1,006	903
Additional paid-in capital	2,756,377	2,601,254
Accumulated deficit	-465,191	-396,156
Accumulated other comprehensive loss	-244	-7,721
Total Shareholders' Equity	2,291,948	2,198,280
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$3,636,917	$3,221,401

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
SHAREHOLDERS' EQUITY	'	'
Common stock, par value	$0.01	$0.01
Common stock, share authorized	150,000,000	150,000,000
Common stock, share issued	100,548,811	90,342,338

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Loss) (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]	'	'	'	'
Sales of metal	$200,825	$230,593	$577,147	$689,563
Production costs applicable to sales	-131,728	-124,967	-363,437	-349,344
Depreciation, Depletion and Amortization	-60,874	-52,844	-168,963	-166,460
Gross profit	8,223	52,782	44,747	173,759
COSTS AND EXPENSES	'	'	'	'
General and administrative	16,240	10,266	41,492	26,456
Exploration	3,305	6,957	16,920	19,829
Litigation settlement	0	0	32,046	0
Loss on impairment	0	1,293	205	6,106
Pre-development, care, maintenance and other	3,955	277	9,414	1,618
Total costs and expenses	23,500	18,793	100,077	54,009
OPERATING INCOME (LOSS)	-15,277	33,989	-55,330	119,750
OTHER INCOME AND EXPENSE	'	'	'	'
Fair value adjustments, net	-20,646	-37,648	63,905	-44,722
Other than temporary impairment of marketable securities	-870	-605	-18,097	-605
Interest income and other, net	-1,791	13,269	2,484	15,055
Interest expense, net of capitalized interest	-9,662	-7,351	-30,324	-21,578
Total other income and expense	-32,969	-32,335	17,968	-51,850
Income (loss) before income taxes	-48,246	1,654	-37,362	67,900
Income tax provision	1,981	-17,475	-31,673	-56,773
NET INCOME (LOSS)	($46,265)	($15,821)	($69,035)	$11,127
Basic income per share:	'	'	'	'
Net income	($0.46)	($0.18)	($0.71)	$0.12
Diluted income per share:	'	'	'	'
Net income	($0.46)	($0.18)	($0.71)	$0.12

Condensed_Consolidated_Stateme1

Condensed Consolidated Statement of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	($46,265)	($15,821)	($69,035)	$11,127
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:	'	'	'	'
Unrealized gain (loss) on available for sale securities	301	6,026	-10,756	774
Reclassification adjustments for losses included in net income	1,006	605	18,233	605
COMPREHENSIVE INCOME (LOSS)	-44,958	-9,190	-61,558	12,506
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments	$870	$605	$18,097	$605

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (USD $)	Total	Common Stock	Additional Paid-In Capital	Accumulated (Deficit)	Accumulated Other Comprehensive Loss
In Thousands
Balances at Dec. 31, 2012	$2,198,280	$903	$2,601,254	($396,156)	($7,721)
Balances, Shares at Dec. 31, 2012	'	90,342	'	'	'
Net income (loss)	-69,035	0	0	-69,035	0
Other comprehensive loss	7,477	0	0	0	7,477
Other Comprehensive Income (Loss), Net of Tax	7,477	'	'	'	'
Common stock issued for the acquisition of Orko Silver Corp., Shares	'	11,573	'	'	'
Common stock issued for the acquisition of Orko Silver Corp., Value	173,363	116	173,247	0	0
Warrants issued for the acquisition of Orko Silver Corp., Value	5,777	0	5,777	0	0
Stock Repurchased During Period, Shares	'	-1,691	'	'	'
Stock Repurchased During Period, Value	-27,552	-17	-27,535	0	0
Common stock issued/cancelled under long-term incentive plans and director fees and options, net	3,638	4	3,634	0	'
Common stock issued/cancelled under long-term incentive plans and director fees and options, net, shares	'	325	'	'	'
Reclassification adjustments for losses included in net income	18,233	'	'	'	'
Balances at Sep. 30, 2013	$2,291,948	$1,006	$2,756,377	($465,191)	($244)
Balances, Shares at Sep. 30, 2013	'	100,549	'	'	'

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:	'	'	'	'
Net income (loss)	($46,265)	($15,821)	($69,035)	$11,127
Add (deduct) non-cash items	'	'	'	'
Depreciation, depletion and amortization	60,874	52,844	168,963	166,460
Accretion of discount on debt and other assets, net	509	585	2,040	1,683
Accretion of royalty obligation	2,889	4,276	10,698	14,348
Deferred income taxes	-1,869	-4,944	17,680	12,425
Fair value adjustments, net	20,308	35,270	-61,487	39,288
Gain (loss) on foreign currency transactions	-511	-1,577	-828	-1,208
Litigation settlement	0	0	22,046	0
Share-based compensation	373	3,364	3,085	6,534
(Gain) loss on sale of assets	-7	108	-1,139	372
Other than temporary impairment of marketable securities	870	605	18,097	605
Loss on impairment	0	1,243	205	6,016
Other non-cash charges	136	1,331	136	1,838
Changes in operating assets and liabilities:	'	'	'	'
Receivables and other current assets	-2,132	-5,648	6,515	1,717
Prepaid expenses and other	-14,306	-2,481	-13,894	-564
Inventories	11,592	-13,762	22,582	-35,387
Accounts payable and accrued liabilities	-5,657	24,342	-22,588	-15,313
CASH PROVIDED BY OPERATING ACTIVITIES	26,804	79,735	103,076	209,941
CASH FLOWS FROM INVESTING ACTIVITIES	'	'	'	'
Purchase of short term investments and marketable securities	-2,689	-4,093	-8,022	-11,959
Proceeds from sales and maturities of short term investments	27	337	6,371	21,038
Capital expenditures	-32,726	-29,972	-72,754	-93,857
Acquisition of Orko Silver Corporation	0	0	-113,214	0
Other	-48	479	1,163	1,659
CASH USED IN INVESTING ACTIVITIES	-35,436	-33,249	-186,456	-83,119
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'	'	'
Proceeds from issuance of notes and bank borrowings	0	0	300,000	0
Payments on long-term debt, capital leases, and associated costs	-1,824	-80,318	-59,021	-94,562
Payments on gold production royalty	-12,619	-17,458	-43,548	-58,119
Reductions of restricted assets associated with the Kensington Term Facility	0	4,645	0	4,645
Share repurchases	-14,995	-9,971	-27,552	-9,971
Other	-27	134	-505	-912
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:	-29,465	-102,968	169,374	-158,919
NET CHANGE IN CASH AND CASH EQUIVALENTS	-38,097	-56,482	85,994	-32,097
Cash and cash equivalents at beginning of period	249,531	199,397	125,440	175,012
Cash and cash equivalents at end of period	$211,434	$142,915	$211,434	$142,915

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
BASIS OF PRESENTATION	'
	BASIS OF PRESENTATION
	Basis of Presentation: The Company’s unaudited interim condensed consolidated financial statements have been prepared under United States Generally Accepted Accounting Principles (“U.S. GAAP”) and applicable rules of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting and include the accounts of Coeur Mining, Inc. and its consolidated subsidiaries (“Coeur” or the “Company”). 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, 2013. The condensed consolidated December 31, 2012 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 and notes thereto contained in the Company’s Form 10-K for the year ended December 31, 2012.
	Use of Estimates: The preparation of the Company’s consolidated financial statements requires management to make estimates and assumptions that affect the amounts reported in its condensed consolidated financial statements and accompanying notes. The most significant areas requiring the use of management’s estimates and assumptions relate to recoverable ounces from proven and probable reserves that are the basis of future cash flow estimates and units-of-production depreciation and amortization calculations; useful lives utilized for depreciation, depletion and amortization; estimates of future cash flows for long lived assets; estimates of recoverable gold and silver ounces in ore on leach pads; the amount and timing of reclamation and remediation costs; and valuation allowance for deferred tax assets.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Recently Adopted Accounting Pronouncements:
	On January 1, 2013, the Company adopted ASU 2011-11, "Balance Sheet (Topic 201): Disclosures about Offsetting Assets and Liabilities." This ASU adds certain additional disclosure requirements about financial instruments and derivative instruments that are subject to netting arrangements. The adoption of ASU 2011-11 had no effect on the Company's financial position, results of operations or cash flows.
	On January 1, 2013, the Company adopted ASU 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." The new standard requires either in a single note or parenthetically on the face of the financial statements: (i) the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and (ii) the income statement line items affected by the reclassification. The adoption of ASU 2013-02 had no effect on the Company's financial position, results of operations or cash flows.
	Recently Issued Accounting Pronouncements:
	In July 2013, the FASB issued 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 update is effective prospectively for the Company's fiscal year beginning January 1, 2014.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
EARNINGS PER SHARE	'
	EARNINGS PER SHARE
	Basic earnings per share is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during each period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. For the three and nine months ended September 30, 2013, 1,142,530 shares of common stock equivalents related to equity-based awards have not been included in the diluted per share calculation as the shares would be antidilutive. For the three and nine months ended September 30, 2012, 772,368 and 640,660 shares, respectively, of common stock equivalents related to equity-based awards have not been 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 earnings per share for the three and nine months ended September 30, 2013 and 2012 because there is no excess value upon conversion over the principal amount of the Notes.
		Three months ended						Nine months ended September 30,
		September 30,
	In thousands except per share amounts	2013			2012			2013			2012
	Net income (loss) available to common stockholders	$	(46,265	)	$	(15,821	)	$	(69,035	)	$	11,127
	Weighted average shares
	Basic	100,778			89,429			96,893			89,550
	Effect of share based compensation plans	—			—			—			140
	Diluted	100,778			89,429			96,893			89,690
	Income (loss) per share
	Basic	$	(0.46	)	$	(0.18	)	$	(0.71	)	$	0.12
	Diluted	$	(0.46	)	$	(0.18	)	$	(0.71	)	$	0.12

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	FAIR VALUE MEASUREMENTS
	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 sets forth 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. As required by accounting guidance, 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 September 30, 2013
		Total		Level 1		Level 2		Level 3
	Assets:
	Marketable equity securities	$	17,616	$	17,616	$	—	$	—
	Gold and silver put options	160		—		160		—
		$	17,776	$	17,616	$	160	$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	61,996	$	—	$	61,996	$	—
	Rochester NSR royalty obligation	24,409		—		—		24,409
	Other derivative instruments, net	2,069		—		2,069		—
		$	88,474	$	—	$	64,065	$	24,409
		Fair Value at December 31, 2012
		Total		Level 1		Level 2		Level 3
	Assets:
	Short term investments	$	999	$	999	$	—	$	—
	Marketable equity securities	27,065		27,065		—		—
	Other derivative instruments, net	943		—		943		—
		$	29,007	$	28,064	$	943	$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	145,098	$	—	$	145,098	$	—
	Put and call options	9,299		—		9,299		—
		$	154,397	$	—	$	154,397	$	—
	The Company’s short-term investments are readily convertible to cash and, therefore, these investments are classified within Level 1 of the fair value hierarchy.
	The Company’s 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 gold put and call options, Palmarejo royalty obligation embedded derivative, and other derivative instruments, net, which relate to the 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 Rochester NSR 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 plan is a significant input used in the estimated fair value of the Rochester NSR royalty obligation and is considered company specific and unobservable.  Therefore, the Company has classified the Rochester NSR royalty obligation as a Level 3 financial liability. Based on the current mine plan, an expected royalty duration of 4.68 years was used to estimate the fair value of the Rochester NSR royalty obligation as of September 30, 2013. The Company had no Level 3 financial assets and liabilities as of December 31, 2012.
	Financial assets and liabilities that are not measured at fair value at September 30, 2013 and December 31, 2012 are set forth below (in thousands):
		Fair Value at September 30, 2013
		Total		Level 1		Level 2		Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,131	$	5,131	$	—	$	—
	7.875% Senior Notes due 2021	$	304,314	$	304,314	$	—	$	—
	Palmarejo Gold Production Royalty Obligation	$	70,795	$	—	$	70,795	$	—
		Fair Value at December 31, 2012
		Total		Level 1		Level 2		Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	48,220	$	48,220	$	—	$	—
	Palmarejo Gold Production Royalty Obligation	$	90,617	$	—	$	90,617	$	—

Investment_in_Marketable_Secur

Investment in Marketable Securities	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
INVESTMENTS	'
	INVESTMENTS
	The Company 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 market value in the financial statements with unrealized gains or losses recorded in other comprehensive income.
	The Company’s investments in marketable securities as of September 30, 2013 and December 31, 2012 (in thousands):
		Investments in marketable securities
		Adjusted		Gross			Gross		Estimated
		Cost		Unrealized			Unrealized		Fair Value
				Losses			Gains
	Marketable securities at September 30, 2013	$	17,860	$	(987	)	$	743	$	17,616
	Marketable securities at December 31, 2012	$	34,786	$	(10,443	)	$	2,722	$	27,065
	In the three months ended September 30, 2013 and 2012, the Company recognized an unrealized gain of $0.3 million and $6.0 million, respectively, in other comprehensive income (loss). In the nine months ended September 30, 2013, and 2012, the Company recognized an unrealized loss of $10.8 million and an unrealized gain of $0.8 million, respectively. 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's management team uses industry knowledge and expertise to evaluate each investment and determined that unrealized losses on certain investments are not other than temporary. In the three and nine months ended September 30, 2013 other than temporary impairment charges of $0.9 million and $18.1 million, respectively, were recorded.
	The Company had $1.0 million of short-term investments at December 31, 2012. These investments were held with various banks and had maturity dates of less than one year. There were no short term investments at September 30, 2013.

Receivables

Receivables	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
RECEIVABLES	'
	RECEIVABLES
	Receivables consist of the following (in thousands):
		September 30, 2013		December 31, 2012
	Receivables - current
	Accounts receivable - trade	$	16,295	$	8,701
	Refundable income tax	8,330		9,331
	Refundable value added tax	46,242		40,020
	Accounts receivable - other	3,550		4,386
		$	74,417	$	62,438
	Receivables - non-current
	Refundable value added tax	$	37,191	$	48,767
	Trade receivables and other receivable balances are reported at outstanding principal amounts, net of an allowance for doubtful accounts. Management evaluates the collectability of receivable account balances to determine the allowance, if any. There were no allowances against receivable balances at September 30, 2013 or December 31, 2012.

Metal_and_Other_Inventories

Metal and Other Inventories	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]	'
METAL AND OTHER INVENTORIES	'
	METAL AND OTHER INVENTORY
	Metal and other inventory consist of the following (in thousands):
		September 30, 2013		December 31, 2012
	Concentrate and doré inventory	$	57,519	$	91,130
	Supplies	66,018		79,540
	Metal and other inventory	$	123,537	$	170,670

Acquisition_of_Orko_Silver_Cor

Acquisition of Orko Silver Corporation/La Preciosa Mineral Interests (Notes)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
ACQUISITION OF ORKO SILVER CORPORATION/LA PRECIOSA MINERAL INTERESTS	'
	ACQUISITION OF ORKO SILVER CORPORATION/LA PRECIOSA MINERAL INTERESTS
	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 for the asset acquisition (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

Property_Plant_and_Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2013
Property, Plant and Equipment [Abstract]	'
PROPERTY, PLANT AND EQUIPMENT	'
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consist of the following (in thousands):
		September 30, 2013			December 31, 2012
	Land	$	1,764		$	2,152
	Buildings and improvements	596,655			581,286
	Machinery and equipment	390,069			360,199
	Capitalized leases for machinery, equipment, buildings, and land	22,444			35,129
		1,010,932			978,766
	Accumulated depreciation and amortization	(373,931		)	(313,067		)
		637,001			665,699
	Construction in progress	12,590			18,303
		$	649,591		$	684,002

Mining_Properties

Mining Properties	9 Months Ended
	Sep. 30, 2013
Mining Properties [Abstract]	'
MINING PROPERTIES	'
	MINING PROPERTIES
	Mining properties consist of the following (in thousands):
	September 30, 2013	Palmarejo			San			Kensington			Rochester			Endeavor			La Preciosa		Joaquin			Total
					Bartolomé
	Mining properties	$	170,789		$	70,371		$	345,447		$	148,626		$	—		$	—	$	—		$	735,233
	Accumulated depletion	(101,687		)	(21,270		)	(68,909		)	(102,105		)	—			—		—			(293,971		)
		69,102			49,101			276,538			46,521			—			—		—			441,262
	Mineral interests	1,660,580			26,643			—			—			44,033			408,352		93,429			2,233,037
	Accumulated depletion	(282,339		)	(8,398		)	—			—			(17,563		)	—		—			(308,300		)
		1,378,241			18,245			—			—			26,470			408,352		93,429			1,924,737
	Total mining properties	$	1,447,343		$	67,346		$	276,538		$	46,521		$	26,470		$	408,352	$	93,429		$	2,365,999
	31-Dec-12	Palmarejo			San			Kensington			Rochester			Endeavor			Joaquin		Total
					Bartolomé
	Mining properties	$	155,722		$	70,322		$	333,619		$	114,973		$	—		$	—	$	674,636
	Accumulated depletion	(82,037		)	(18,439		)	(46,649		)	(100,437		)	—			—		(247,562		)
		73,685			51,883			286,970			14,536			—			—		427,074
	Mineral interests	1,658,389			26,642			—			—			44,033			93,429		1,822,493
	Accumulated depletion	(235,795		)	(7,338		)	—			—			(14,625		)	—		(257,758		)
		1,422,594			19,304			—			—			29,408			93,429		1,564,735
	Total mining properties	$	1,496,279		$	71,187		$	286,970		$	14,536		$	29,408		$	93,429	$	1,991,809
	Operational Mining Properties
	Palmarejo Mine: Palmarejo is located in the State of Chihuahua in northern Mexico, and its principal silver and gold properties are collectively referred to as the “Palmarejo mine.” The Palmarejo mine commenced production in April 2009.
	San Bartolomé Mine: The San Bartolomé mine is a silver mine located near the city of Potosi, Bolivia. The mineral rights for the San Bartolomé project are held through long-term joint venture/lease agreements with several local independent mining co-operatives and the Bolivian state owned mining organization, (“COMIBOL”). The Company commenced commercial production at San Bartolomé in June 2008.
	Kensington Mine: The Kensington mine is an underground gold mine and consists of the Kensington and adjacent Jualin properties located on the east side of the Lynn Canal about 45 miles north-northwest of Juneau, Alaska. The Company commenced commercial production in July of 2010.
	Rochester Mine: The Company has conducted operations at the Rochester mine, located in Western Nevada, since September 1986. The mine utilizes the heap-leaching process to extract both silver and gold from ore mined using open pit methods. Rochester’s primary product is silver with gold produced as a by-product.
	Mineral Interests
	Endeavor Mine: In May 2005, CDE Australia Pty Ltd ("CDE Australia"), a wholly-owned subsidiary of the Company, acquired the silver production and reserves, up to a maximum 17.7 million  payable ounces, contained at the Endeavor mine in Australia, which is owned and operated by Cobar Operations Pty. Limited, a wholly-owned subsidiary of CBH Resources Ltd. In March 2006, CDE Australia entered into an amended agreement under which it owns all silver production and reserves up to a total of 20.0 million payable ounces.
	CDE Australia began realizing reductions in revenues in the fourth quarter of 2008 as a result of a silver price sharing provision that was part of the purchase agreement. CDE Australia has received approximately 4.7 million payable ounces to date and the current ore reserve contains approximately 4.0 million payable ounces based on current metallurgical recovery and current smelter contract terms.
	La Preciosa Project: On April 16, 2013, the Company completed its acquisition of Orko Silver Corporation (“Orko”), which holds the La Preciosa silver-gold project in Durango, Mexico.
	Joaquin Project: The Joaquin project is located in the Santa Cruz province of southern Argentina. The Company commenced exploration of this large property located north of the Company's Martha silver mine in November 2007 and acquired 100% in December 2012. Since that time, the Company has defined silver and gold mineralization in two deposits at Joaquin, La Negra and La Morocha, collectively referred to as the "Joaquin Project." The company continues to explore and develop the project.

Debt_and_Capital_Lease_Obligat

Debt and Capital Lease Obligations	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
DEBT AND CAPITAL LEASE OBLIGATIONS	'
	DEBT AND CAPITAL LEASE OBLIGATIONS
	The current and non-current portions of long-term debt and capital lease obligations as of September 30, 2013 and December 31, 2012 are as follows (in thousands):
		September 30,							December 31,
		2013							2012
		Current				Non-Current			Current				Non-Current
	3.25% Convertible Senior Notes due 2028	$	—			$	5,334		$	48,081			$	—
	7.875% Senior Notes due 2021	—				300,000			—				—
	Capital lease obligations	3,868				1,038			7,902				3,460
		$	3,868			$	306,372		$	55,983			$	3,460
	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 its outstanding 3.25% Convertible Senior Notes due 2028. 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 September 30, 2013.
	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 “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. As of September 30, 2013, the outstanding balance of the Notes was $300 million.
	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 new 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 provides 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 among other items, by up to $50.0 million. There is a commitment fee on the unused portion of the line which varies between 0.5% and 0.75% depending on the prior quarter's consolidated total leverage ratio, as defined in the Credit Agreement. The unused line fee for the three and nine months ended September 30, 2013 was $0.2 million and $0.4 million, respectively and was charged to interest expense.
	As of September 30, 2013, no amounts were outstanding under the Revolving Credit Facility.
	Interest Expense
	Interest expense is made up of the following (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	3.25% Convertible Senior Notes due 2028	$	43		$	395		$	423		$	1,186
	7.875% Senior Notes due 2021	5,906			—			15,947			—
	Revolving Credit Facility	176			85			434			85
	Kensington Term Facility (terminated in 2012)	—			459			—			2,339
	Capital lease obligations	89			219			355			827
	Other debt obligations	18			351			287			583
	Accretion of Palmarejo gold production royalty obligation	4,023			4,384			12,192			15,047
	Amortization of debt issuance costs	540			1,331			1,604			1,838
	Accretion of debt discount	—			639			576			1,879
	Capitalized interest	(1,133		)	(512		)	(1,494		)	(2,206		)
	Total interest expense, net of capitalized interest	$	9,662		$	7,351		$	30,324		$	21,578

Reclamation_and_Mine_Closure

Reclamation and Mine Closure	9 Months Ended
	Sep. 30, 2013
Asset Retirement Obligation Disclosure [Abstract]	'
RECLAMATION AND MINE CLOSURE	'
	RECLAMATION AND MINE CLOSURE
	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. Such assumptions are based on the Company’s current mining plan and the best available information for making such estimates. The sum of the expected costs by year is discounted, using the Company's credit adjusted risk free interest rate. On an ongoing basis, management evaluates its estimates and assumptions; however, actual amounts could differ from those based on such estimates and assumptions.
	Changes to the Company’s asset retirement obligations for active mining sites are as follows (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	Asset retirement obligation - beginning	$	35,578		$	34,510		$	34,456		$	32,714
	Accretion	777			714			2,277			2,180
	Addition and changes in estimates	19,542			—			19,542			335
	Settlements	(124		)	(13		)	(502		)	(18		)
	Asset retirement obligation - ending	$	55,773		$	35,211		$	55,773		$	35,211
	In addition, the Company has accrued $0.6 million and $0.9 million as of September 30, 2013 and December 31, 2012, respectively, for reclamation liabilities related to former mining activities. These amounts are also included in reclamation and mine closure liabilities. In the three months ended September 30, 2013, the Company increased its estimate of the reclamation obligations by $16.8 million at Rochester and $2.7 million at Kensington.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	INCOME TAXES
	The following table summarizes the components of the Company’s income tax provision for the three and nine months ended September 30, 2013 and 2012 (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	United States	$	5,182		$	(465	)	$	1,905		$	(3,990	)
	Mexico	1,886			5,409			(17,585		)	(10,341		)
	Bolivia	(4,598		)	(23,106		)	(13,482		)	(41,684		)
	Other jurisdictions	(489		)	687			(2,511		)	(758		)
	Income tax provision from continuing operations	$	1,981		$	(17,475	)	$	(31,673	)	$	(56,773	)
	The income tax provision for the three and nine months ended September 30, 2013 varies from the statutory rate primarily because of differences in tax rates for the Company's foreign operations and changes in valuation allowances for net deferred tax assets, permanent differences and foreign exchange rate differences.
	The Company has U.S. net operating loss carryforwards which expire in 2017 through 2031. Net operating losses in foreign countries have an indefinite carryforward period, except in Mexico where net operating loss carryforwards are limited to ten years.

ShareBased_Compensation_Plans

Share-Based Compensation Plans	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
SHARE-BASED COMPENSATION PLANS	'
	SHARE-BASED COMPENSATION PLANS
	Compensation expense recognized in the Company’s consolidated financial statements for the three months ended September 30, 2013 and 2012 for share based compensation awards was $0.2 million and $3.4 million, respectively. Compensation expense recognized for the nine months ended September 30, 2013 and 2012 for share based compensation awards was $2.3 million and $6.1 million, respectively. Stock appreciation rights (SARs) outstanding under the plan are liability-based awards and are required to be re-measured at the end of each reporting period with corresponding adjustments to previously recognized and future stock-based compensation expense. At September 30, 2013, there was $7.4 million of total unrecognized compensation cost (net of estimated forfeitures) to be recognized over a weighted-average period of 1.7 years.
	The following table summarizes the new grants issued during the nine months ended September 30, 2013:
	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
	January 2, 2013		1,805	$	25.2	—	$	—	—	$	—
	January 22, 2013		47,994	$	23.9	77,715	$	14.77	95,991	$	27.41
	February 4, 2013		18,668	$	22.63	17,692	$	14	21,828	$	25.96
	April 1, 2013		157,142	$	18.51	73,290	$	11.39	28,662	$	21.23
	May 21, 2013		111,193	$	13.66	—	$	—	—	$	—
	July 1, 2013		69,774	$	12.72	16,157	$	7.93	20,451	$	14.59
	The following options and stock appreciation rights were exercised during the nine months ended September 30, 2013:
	Award Type		Number of	Weighted Average		Number of Exercisable Units	Weighted Average
			Exercised Units	Exercised Price			Exercisable Price
	Options		926	$	20.8	252,713	$	33.07
	Stock Appreciation Rights		3,846	$	15.4	65,019	$	14.21
	The following shows the weighted average fair value of SARs outstanding at September 30, 2013:
		SARs
	Weighted average fair value	$	3.09

Defined_Contribution_and_401k

Defined Contribution and 401(k)	9 Months Ended
	Sep. 30, 2013
Postemployment Benefits [Abstract]	'
DEFINED CONTRIBUTION AND 401(k) PLAN	'
	DEFINED CONTRIBUTION AND 401(k) PLAN
	Defined Contribution and 401(k) 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 adopted a Safe Harbor Tiered Match and is required to make matching contributions equal to 100% of the employee’s contribution up to 3% of the employee’s compensation plus matching contributions equal to 50% of the employee’s contribution up to an additional 2% of the employee’s compensation. In addition, the Company provides a noncontributory defined contribution based on a percentage of eligible employee's salary. Total plan expenses recognized in the Company’s consolidated financial statements for the three months ended September 30, 2013 and 2012 were $1.1 million and $1.0 million, respectively. Total plan expenses recognized in the Company’s consolidated financial statements for the nine months ended September 30, 2013 and 2012 were $3.2 million and $3.1 million, respectively.

Derivative_Financial_Instrumen

Derivative Financial Instruments and Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
DERIVATIVE FINANCIAL INSTRUMENTS AND FAIR VALUE OF FINANCIAL INSTRUMENTS	'
	DERIVATIVE FINANCIAL INSTRUMENTS
	Palmarejo Gold Production Royalty
	On January 21, 2009, the Company entered into a gold production royalty transaction with Franco-Nevada Corporation. The royalty covers 50% of the life of mine production from the Palmarejo mine and adjacent properties. The royalty transaction included 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. As of September 30, 2013, a total of 156,493 ounces of gold remain outstanding under the minimum royalty obligation.
	The price volatility associated with the minimum royalty obligation is considered an embedded derivative financial instrument under U.S. GAAP. As such, the Company is required to recognize the change in fair value of the remaining minimum obligation due to the changing gold prices. Unrealized gains are recognized in periods when the forward gold price has decreased from the previous period and unrealized losses are recognized in periods when the forward 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 6.3% and 4.2% at September 30, 2013 and December 31, 2012, respectively. The fair value of the embedded derivative at September 30, 2013 and December 31, 2012, based on forward gold prices averaging approximately $1,337 and $1,694 per ounce, respectively, was a liability of $62.0 million and $145.1 million, respectively. During the three months ended September 30, 2013 and 2012, mark-to-market adjustments for this embedded derivative amounted to a loss of $9.6 million and $23.4 million, respectively. During the nine months ended September 30, 2013 and 2012, mark-to-market adjustments for this embedded derivative amounted to a gain of $83.1 million and a loss of $10.9 million, respectively.
	Payments on the royalty obligation occur monthly resulting in a decrease to the carrying amount of the minimum obligation and the derivative liability and the recognition of realized gains or losses as a result of changing prices for gold. 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 $400 per ounce (which $400 floor is subject to a 1% annual inflation compounding adjustment beginning on January 21, 2013). For the three months ended September 30, 2013 and 2012, realized losses on settlement of the liabilities were $5.6 million and $10.9 million, respectively. For the nine months ended September 30, 2013 and 2012, realized losses on settlement of the liabilities were $22.9 million and $35.0 million, respectively. The mark-to-market adjustments and realized losses are included in fair value adjustments, net in the consolidated statement of operations.
	Foreign Exchange Contracts and Hedges
	The Company periodically enters into foreign exchange contracts and hedges to reduce the foreign exchange risk associated with forecasted Mexican peso (“MXN”) operating costs at its Palmarejo mine. At September 30, 2013, the Company had MXN foreign exchange contracts of $24.0 million in U.S. dollars. These contracts require the Company to exchange U.S. dollars for MXN at a weighted average exchange rate of 12.55 MXN to each U.S. dollar over the next six months. At December 31, 2012, the Company had MXP foreign exchange contracts of $26.1 million in U.S. dollars. These contracts required the Company to exchange U.S. dollars for MXN at a weighted average exchange rate of 13.11 MXN to each U.S. dollar and the Company had a liability with a fair value of $0.1 million at December 31, 2012. In addition, at September 30, 2013, the Company had outstanding call options requiring it to sell $24.0 million in U.S. dollars in exchange for MXP at a weighted average strike price of 15.06 MXP to each U.S. dollar if the foreign exchange rate exceeds the strike price. Further, at September 30, 2013, the Company had outstanding put options allowing it to buy $24.0 million in U.S. dollars in exchange for MXP at a weighted average strike price of 12.50 MXP to each U.S. dollar if the foreign exchange rate exceeds the strike price. The Company had a liability with a fair value of $1.3 million at September 30, 2013. The Company recorded a mark-to-market gain on these contracts of $0.1 million and a mark-to-market loss of $1.4 million for the three and nine months ended September 30, 2013, respectively. The Company recorded mark-to-market gains on these contracts of $0.6 million and $3.4 million for the three and nine months ended September 30, 2012, respectively. These mark-to-market adjustments are reflected in fair value adjustments, net in the consolidated statement of operations. The Company recorded a realized loss of $0.1 million and a realized gain of $0.7 million in production costs applicable to sales during the three and nine months ended September 30, 2013, respectively. The Company recorded realized gains of $0.4 million and realized losses of $1.5 million in the three and nine months ended September 30, 2012, respectively, which have been recognized in production costs applicable to sales.
	Concentrate Sales Contracts
	The Company enters into concentrate sales contracts with third-party smelters. The contracts, in general, provide for a provisional payment based upon provisional assays and quoted 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 derivative, which is the final settlement price based on a future price, does not qualify for hedge accounting. These embedded derivatives are recorded as derivative assets (in Prepaid expenses and other) or derivative liabilities (in Accrued liabilities and other) on the balance sheet and are adjusted to fair value through earnings each period until the date of final settlement. At September 30, 2013, the Company had outstanding provisionally priced sales of $32.4 million, consisting of 0.1 million ounces of silver and 26,265 ounces of gold, which had a fair value of $31.7 million including the embedded derivative. At December 31, 2012, the Company had outstanding provisionally priced sales of $33.2 million consisting of 0.4 million ounces of silver and 11,957 ounces of gold, which had a fair value of approximately $34.1 million including the embedded derivative.
	Commodity Derivatives
	At September 30, 2013, the Company had outstanding put options that expire December 31, 2013, allowing it to sell 1.3 million ounces of silver and 25,000 ounces of gold at a strike price of $17.00 per ounce and $1,200 per ounce, respectively, if the market price of silver and gold were to fall below the strike price. The fair market value of these contracts was a net asset of $0.2 million. During the three months ended September 30, 2013, the Company recorded unrealized losses on the contracts of $0.4 million.
	At December 31, 2012, the Company had outstanding call options requiring it to deliver 97,000 ounces of gold at a weighted average strike price of $1,967.89 per ounce if the market price of gold exceeds the strike price. At December 31, 2012, the Company had outstanding put options allowing it to sell 122,000 ounces of gold at a weighted average strike price of $967.86 per ounce if the market price of gold were to fall below the strike price. The fair market value of these contracts at December 31, 2012 was a net liability of $9.3 million. During the nine months ended September 30, 2013, 25,000 ounces of gold put options expired at a weighted average strike price of $921.60 per ounce and 12,500 ounces of gold call options expired at a weighted average strike price of $2,000, resulting in a realized loss of $1.1 million. During the three months ended September 30, 2013 and 2012, the Company settled the remaining 97,000 ounces of gold put options and 84,500 ounces of gold call options for a net realized gain of $0.4 million. During the three months ended September 30, 2013 and 2012, the Company recorded unrealized losses of $2.4 million and $3.6 million, respectively, related to the outstanding options. During the nine months ended September 30, 2013 and 2012, the Company recorded unrealized gains of $9.3 million and $1.4 million, respectively, related to the outstanding options. The realized and unrealized gains and losses are included in fair value adjustments, net in the consolidated statement of operations.
	As of September 30, 2013, the Company had the following derivative instruments that settle in each of the years indicated in the table (in thousands except average prices, ounces and notional data):
		2013				2014				2015				Thereafter
	Palmarejo gold production royalty	$	8,633			$	24,895			$	24,691			$	19,236
	Average gold price in excess of minimum contractual deduction	$	502			$	498			$	494			$	490
	Notional ounces	17,201				50,004				50,004				39,285
	Mexican peso forward purchase contracts	$	12,000			$	12,000			$	—			$	—
	Average rate (MXP/$)	$	12.9			$	12.2			$	—			$	—
	Mexican peso notional amount	154,816				146,460				—				—
	Mexican peso put options purchased	$	—			$	24,000			$	—			$	—
	Average strike price (MXP/$)	$	—			$	12.5			$	—			$	—
	Mexico peso notional amount	—				300,000				—				—
	Mexican peso call options sold	$	—			$	24,000			$	—			$	—
	Average strike price (MXP/$)	$	—			$	15.06			$	—			$	—
	Mexico peso notional amount	—				361,500				—				—
	Silver concentrate sales agreements	$	2,326			$	—			$	—			$	—
	Average silver price	$	22.82			$	—			$	—			$	—
	Notional ounces	101,908				—				—				—
	Gold concentrate sales agreements	$	30,123			$	—			$	—			$	—
	Average gold price	$	1,147			$	—			$	—			$	—
	Notional ounces	26,265				—				—				—
	Gold put options purchased	$	382			$	—			$	—			$	—
	Average gold strike price	$	1,200			$	—			$	—			$	—
	Notional ounces	25,000				—				—				—
	Silver put options purchased	$	186			$	—			$	—			$	—
	Average silver strike price	$	17			$	—			$	—			$	—
	Notional ounces	1,250,000				—				—				—
	The following summarizes the classification of the fair value of the derivative instruments as of September 30, 2013 and December 31, 2012 (in thousands):
		September 30, 2013
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
	Foreign exchange contracts Peso	$	9			$	1,355			$	—			$	—
	Palmarejo gold production royalty	—				—				22,590				39,406
	Gold and silver put options	160				—				—				—
	Concentrate sales contracts	42				766				—				—
		$	211			$	2,121			$	22,590			$	39,406
		December 31, 2012
		Prepaid				Accrued				Other long-				Current				Non-current
		expenses and				liabilities and				term				portion of				portion of
		other				other				Liabilities				royalty				royalty
														obligation				obligation
	Foreign exchange contracts Peso	$	376			$	300			$	—			$	—			$	—
	Palmarejo gold production royalty	—				—				—				41,146				103,952
	Put and call options, net	—				2,025				7,274				—				—
	Concentrate sales contracts	1,030				163				—				—				—
		$	1,406			$	2,488			$	7,274			$	41,146			$	103,952
	The following represent mark-to-market gains (losses) on derivative instruments for the three and nine months ended September 30, 2013 and 2012 (in thousands):
				Three months ended September 30,								Nine months ended September 30,
	Financial statement line	Derivative		2013				2012				2013				2012
	Sales of metal	Concentrate sales contracts		$	718			$	1,591			$	(2,037	)		$	2,050
Production costs applicable to sales	Forward foreign exchange contracts		(99		)		394				732				(1,540		)
Fair value adjustments, net	Foreign exchange contracts MXN Peso		100				621				(1,422		)		3,394
Fair value adjustments, net	Silver ounces receivable		—				280				—				302
Fair value adjustments, net	Palmarejo gold royalty		(15,279		)		(34,266		)		60,216				(45,771		)
Fair value adjustments, net	Put and call options		(3,104		)		(4,283		)		7,474				(2,647		)
			$	(17,664	)		$	(35,663	)		$	64,963			$	(44,212	)
Credit Risk
The credit risk exposure related to any potential derivative instruments is limited to the unrealized gains, if any, on outstanding contracts based on current market prices. To reduce counter-party credit exposure, the Company deals with financial institutions management deems credit worthy and limits credit exposure to each. The Company does not anticipate non-performance by any of its counterparties. In addition, to allow for situations where positions may need to be revised, the Company deals only in markets that management considers highly liquid.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	COMMITMENTS AND CONTINGENCIES
	Sites Related to Callahan Mining Corporation
	In 1991, the Company acquired all of the outstanding common stock of Callahan Mining Corporation. Since then, 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 Idaho, 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. The Company anticipates that further agency interaction may be possible with respect to three of these sites, discussed below.
	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 and was mined from 1926 until 1993. Callahan sold its parcel in 1990. In February 2010, the State of Washington Department of Ecology notified Callahan Mining Corporation 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 Mining Corporation 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 Mining Corporation, seeking contribution for the $3.5 million settlement. Callahan Mining Corporation filed a response and defense to the lawsuit on December 11, 2012 and does not believe it has any liability to Asarco. The Court has set a trial date for September 22, 2014. 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.
	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.
	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.
	The Cooperative Reserva Fiscal, with which the Company has one of those contracts, subsequently interpreted the COMIBOL resolution and determined that the Huacajchi deposit was not covered by such resolution. In March 2010, the Cooperative Reserva Fiscal notified COMIBOL that, based on its interpretation, it was resuming mining of high grade material above the 4,400 meter level in the Huacajchi deposit. In December 2011, the Cooperative Reserva Fiscal sent a similar notification to COMIBOL with respect to a further area above the 4,400 meter level known as Huacajchi Sur. Based on these notifications and on the absence of any objection from COMIBOL, the Company resumed mining operations at the San Bartolomé mine on the Huacajchi deposit and Huacajchi Sur. Mining in other areas above the 4,400 meter level continues to be suspended.
	The partial suspension may reduce production until the Company is able to resume mining above 4,400 meters generally. It is uncertain at this time how long the suspension will remain in place. In addition, it is possible that COMIBOL may decide that the Company's operations at the Huacajchi deposit or Huacajchi Sur are subject to the COMIBOL resolution, which may force the Company to cease mining at such deposits. If COMIBOL objects to the Company mining at the Huacajchi deposit or Huacajchi Sur or if the other restrictions are not lifted, 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 is the subject of an administrative appeal filed by Great Basin Resource Watch (“GBRW”) with the Interior Board of Land Appeals (“IBLA”). This appeal challenges 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 asserts 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 alleges 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 are proceeding as approved. Coeur was granted intervenor status in the appeal and is actively participating in its resolution.  The BLM and Coeur assert 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 further supporting and strengthening BLM and Coeur's positions that the EA complies with NEPA. The Company cannot predict whether this will result in further briefing with the IBLA, when the IBLA will rule on the appeal or what impact, if any, an adverse ruling may have on Rochester's operations.
	Settlement of Unpatented Mining Claims Dispute at Rochester in Nevada and 3.4% NSR Royalty
	In 2011, Coeur Rochester, Inc. (“Coeur Rochester”) filed a lawsuit against Rye Patch Gold Corp and Rye Patch Gold US, Inc. seeking a declaratory judgment as to Coeur Rochester’s ownership of unpatented mining claims surrounding the Coeur Rochester operation.  Rye Patch Gold US, Inc. filed a similar action asserting its interest in the claims.  The dispute stemmed from competing asserted interests in the mining claims following Coeur Rochester’s inadvertent failure to pay annual mining claim maintenance fees.  In the second quarter of 2013, Coeur Rochester settled all claims associated with the dispute and, in connection therewith, agreed to make a one-time $10.0 million cash payment and granted a 3.4% net smelter returns royalty to Rye Patch on production and sales from the Rochester mine, commencing in January 2014, up to 39.4 million silver equivalent ounces.  The above settlement resulted in a $32.0 million charge in the second quarter of 2013. Payments on the royalty obligation will occur quarterly reducing the carrying amount of the royalty liability and changes in silver and gold prices will result in the recognition of mark-to-market gains or losses in Fair value adjustments, net in the consolidated statement of operations.
	Mexican Import Tax
	During the third quarter of 2013, the Company was notified by Mexican tax authorities of potential penalties arising from an alleged misuse of its import license in Mexico relating to imports of goods in 2008, 2009 and 2011.  The Company has a validly-issued Mexican import license, and routinely contracts with third party importers in its ordinary course operating activities.  The Mexican authorities claimed that the valid legal formation and existence of one such importer could not be confirmed. Accordingly, the authorities considered the certificates of origin on goods imported by that importer to be invalid, and determined that the origin of those imported goods could not be conclusively established, which resulted in the denial of preferential tariff treatment for all items imported by that third party importer on behalf of the Company and potential interest and penalties payable by the Company in connection therewith. The Company is currently negotiating with Mexican tax authorities to resolve the matter. During the three months ended September 30, 2013, the Company accrued $1.8 million for the potential settlement of these claims.
	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.
	Rochester Production Royalty
	The Company acquired the Rochester property from ASARCO, a subsidiary of Grupo Mexico SA de CV, 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%. Royalty expense was zero and $0.8 million, respectively for the three months ended September 30, 2013 and 2012, respectively. Royalty expense was $1.0 million and $2.0 million, respectively for the nine months ended September 30, 2013 and 2012, respectively.
	Palmarejo Gold Production Royalty
	On January 21, 2009, Coeur Mexicana entered into a gold production royalty transaction with Franco-Nevada Corporation under which Franco-Nevada 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. As of September 30, 2013, a total of 156,493 ounces of gold remain outstanding under the minimum royalty obligation.

Significant_Customers

Significant Customers	9 Months Ended
	Sep. 30, 2013
Significant Customers [Abstract]	'
SIGNIFICANT CUSTOMERS	'
	SIGNIFICANT CUSTOMERS
	The Company markets its refined doré to credit worthy bullion trading houses, market makers and members of the London Bullion Market Association and sound financial institutions. The refined metals are ultimately sold to end users for use in electronic circuitry, jewelry, silverware, pharmaceutical products, and the technology industry. The Company currently has eight trading counterparties (International Commodities, Mitsui, Mitsubishi, Standard Bank, Valcambi, TD Bank Group, Johnson Matthey, and Auramet) and the sales of metals to these companies amounted to approximately 83% and 92% of total metal sales for the nine months ended September 30, 2013 and 2012, respectively. Generally, the loss of a single bullion trading counterparty would not adversely affect the Company due to the liquidity of the markets and the availability of alternative trading counterparties.
	Sales of silver and gold concentrates to third parties (Nyrstar, Aurubis, Sumitomo, and China National Gold) amounted to approximately 17% and 8% of total metal sales for the nine months ended September 30, 2013, and 2012, respectively. The loss of any one smelting and refining client may have a material adverse effect if alternate smelters and refiners are not available. The Company believes there is sufficient global capacity available to address the loss of any one smelter.
	The following table indicates customers that represent 10% or more of total sales of metal for the three months ended September 30, 2013 and 2012 (in millions):
		Three months ended September 30,
	Customer	2013		2012		Segments reporting sales of metal
	International Commodities	$	41.5	$	10.8	Palmarejo, Rochester
	Mitsui	$	29.4	$	14.2	Palmarejo, Rochester
	TD Bank Group	$	28.9	$	19.4	Palmarejo, Rochester
	Auramet	$	28.5	$	32	Rochester, Kensington
	Valcambi	$	22.5	$	112.7	Palmarejo, San Bartolomé
	China National Gold	$	21.3	$	9.6	Kensington
	The following table indicates customers that represent 10% or more of total sales of metal for the nine months ended September 30, 2013 and 2012 (in millions):
		Nine months ended September 30,
	Customer	2013		2012		Segments reporting sales of metal
	Auramet	$	97.4	$	65.5	Palmarejo, San Bartolomé, Kensington
	International Commodities	$	82	$	34.7	Palmarejo, San Bartolomé, Rochester
	TD Bank Group	$	78.1	$	44.6	Palmarejo, Rochester
	Valcambi	$	61.9	$	368.9	Palmarejo, San Bartolomé

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
SEGMENT REPORTING	'
	SEGMENT REPORTING
	The operating segments are managed separately because each segment represents a distinct use of company resources and a separate contribution to the Company’s cash flows. The Company’s reportable operating segments include the Palmarejo, San Bartolomé, Martha, Rochester, Kensington and Endeavor mining properties and the La Preciosa exploration property. All operating segments are engaged in the discovery and/or mining of gold and silver and generate the majority of their revenues from the sale of these precious metal concentrates and/or refined precious metals. Through September 2012, the Martha mine sold precious metal concentrates, typically under long-term contracts, to trading partners located in the United States and Switzerland. The Company ceased active mining operations at the Martha mine in September of 2012.
	The Kensington mine sells a gold concentrate, typically under long-term contracts to smelters in China and Japan. Refined gold and silver produced by the Rochester, Palmarejo, and San Bartolomé mines are principally sold on a spot basis to precious metals trading banks such as International Commodities, Mitsui, Mitsubishi, Standard Bank, TD Bank Group, Valcambi and Auramet. Concentrates produced at the Endeavor mine are sold to Nyrstar (formerly Zinifex), an Australian smelter. The Company’s exploration programs, other than the La Preciosa project, are reported in its other segment. The other segment also includes the corporate headquarters, elimination of intersegment transactions and other items necessary to reconcile to consolidated amounts. The accounting policies of the operating segments are the same as those described in the summary of significant accounting policies above. The Company evaluates performance and allocates resources based on profit or loss before interest, income taxes, depreciation and amortization, unusual and infrequent items and extraordinary items.
	Financial information relating to the Company’s segments is as follows (in thousands):
	Three months ended September 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
		Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	104,524		$	28,819		$	38,927		$	24,259		$	—		$	4,296		$	—		$	—		$	200,825
	Production costs applicable to sales	(66,839		)	(17,673		)	(27,484		)	(17,861		)	—			(1,871		)	—			—			(131,728		)
	Depreciation and depletion	(33,654		)	(4,909		)	(18,190		)	(2,860		)	(108		)	(894		)	(11		)	(248		)	(60,874		)
	Gross profit	4,031			6,237			(6,747		)	3,538			(108		)	1,531			(11		)	(248		)	8,223
	Exploration expense	860			(3		)	1,496			624			282			—			(671		)	717			3,305
	Other operating expenses	—			1,969			(6		)	173			738			—			1,888			15,433			20,195
	OPERATING INCOME / LOSS	3,171			4,271			(8,237		)	2,741			(1,128		)	1,531			(1,228		)	(16,398		)	(15,277		)
	Interest and other income, net	(2,281		)	582			—			60			(595		)	—			19			(446		)	(2,661		)
	Interest expense, net	(2,925		)	(12		)	(51		)	(5		)	—			—			—			(6,669		)	(9,662		)
	Fair value adjustments, net	(15,260		)	—			(2,952		)	(2,363		)	—			—			—			(71		)	(20,646		)
	Income tax expense	1,564			(4,648		)	—			—			5			—			—			5,060			1,981
	Net income (loss)	$	(15,731	)	$	193		$	(11,240	)	$	433		$	(1,718	)	$	1,531		$	(1,209	)	$	(18,524	)	$	(46,265	)
	Segment assets (A)	$	1,825,599		$	289,274		$	481,613		$	161,993		$	6,146		$	27,938		$	410,085		$	109,520		$	3,312,168
	Capital expenditures (B)	$	10,290		$	4,166		$	4,934		$	12,267		$	—		$	—		$	358		$	711		$	32,726
	Three months ended September 30, 2012	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
		Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	102,642		$	46,192		$	36,450		$	36,244		$	4,933		$	4,132		$	—		$	—		$	230,593
	Production costs applicable to sales	(48,672		)	(19,937		)	(26,881		)	(21,014		)	(6,481		)	(1,982		)	—			—			(124,967		)
	Depreciation and depletion	(34,007		)	(4,163		)	(11,512		)	(2,061		)	(32		)	(898		)	—			(171		)	(52,844		)
	Gross profit	19,963			22,092			(1,943		)	13,169			(1,580		)	1,252			—			(171		)	52,782
	Exploration expense	2,288			50			1,476			1,158			1,217			—			—			768			6,957
	Loss on impairment	—			—			—			—			1,293			—			—			—			1,293
	Other operating expenses	—			50			39			1,109			133			—			—			9,212			10,543
	OPERATING INCOME / LOSS	17,675			21,992			(3,458		)	10,902			(4,223		)	1,252			—			(10,151		)	33,989
	Interest and other income, net	4,914			8,353			—			59			(342		)	—			—			(320		)	12,664
	Interest expense	(4,401		)	(11		)	(1,834		)	(6		)	(2		)	—			—			(1,097		)	(7,351		)
	Fair value adjustments, net	(34,266		)	—			(4,283		)	—			—			—			—			901			(37,648		)
	Income tax benefit (expense)	5,495			(23,106		)	—			—			1,233			(202		)	—			(895		)	(17,475		)
	Net income (loss)	$	(10,583	)	$	7,228		$	(9,575	)	$	10,955		$	(3,334	)	$	1,050		$	—		$	(11,562	)	$	(15,821	)
	Segment assets (A)	$	1,926,695		$	299,041		$	520,619		$	104,066		$	11,339		$	32,619		$	—		$	18,613		$	2,912,992
	Capital expenditures (B)	$	11,321		$	4,406		$	9,034		$	4,777		$	6		$	—		$	—		$	428		$	29,972
	Nine months ended	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
	30-Sep-13	Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	248,167		$	111,196		$	109,053		$	98,636		$	(662	)	$	10,757		$	—		$	—		$	577,147
	Production costs applicable to sales	(148,776		)	(66,165		)	(81,203		)	(62,418		)	—			(4,874		)	—			(1		)	(363,437		)
	Depreciation and depletion	(98,161		)	(14,606		)	(44,837		)	(7,365		)	(338		)	(2,938		)	(12		)	(706		)	(168,963		)
	Gross profit	1,230			30,425			(16,987		)	28,853			(1,000		)	2,945			(12		)	(707		)	44,747
	Exploration expense	6,029			76			2,732			1,621			4,460			—			19			1,983			16,920
	Loss on impairment	—			—			—			—			205			—			—			—			205
	Other operating expenses	—			5,691			204			34,494			2,643			—			1,888			38,032			82,952
	OPERATING INCOME / LOSS	(4,799		)	24,658			(19,923		)	(7,262		)	(8,308		)	2,945			(1,919		)	(40,722		)	(55,330		)
	Interest and other income, net	(768		)	1,871			281			117			166			—			8			(17,288		)	(15,613		)
	Interest expense, net	(10,853		)	(59		)	(405		)	(16		)	—			—			—			(18,991		)	(30,324		)
	Fair value adjustments, net	60,234			—			7,626			(2,363		)	—			—			—			(1,592		)	63,905
	Income tax expense	(17,383		)	(13,482		)	(1		)	—			(38		)	—			—			(769		)	(31,673		)
	Net income (loss)	$	26,431		$	12,988		$	(12,422	)	$	(9,524	)	$	(8,180	)	$	2,945		$	(1,911	)	$	(79,362	)	$	(69,035	)
	Segment assets (A)	$	1,825,599		$	289,274		$	481,613		$	161,993		$	6,146		$	27,938		$	410,085		$	109,520		$	3,312,168
	Capital expenditures (B)	$	24,770		$	7,782		$	15,670		$	22,161		$	10		$	—		$	1,093		$	1,268		$	72,754
	Nine months ended	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
	30-Sep-12	Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	362,729		$	140,951		$	67,950		$	89,156		$	12,700		$	16,077		$	—		$	—		$	689,563
	Production costs applicable to sales	(157,070		)	(56,317		)	(60,078		)	(51,331		)	(17,276		)	(7,272		)	—			—			(349,344		)
	Depreciation and depletion	(114,525		)	(12,452		)	(27,836		)	(5,763		)	(1,332		)	(4,134		)	—			(418		)	(166,460		)
	Gross profit	91,134			72,182			(19,964		)	32,062			(5,908		)	4,671			—			(418		)	173,759
	Exploration expense	5,232			51			1,971			3,003			7,391			—			—			2,181			19,829
	Loss on impairment	—			—			—			—			6,106			—			—			—			6,106
	Other operating expenses	—			80			75			3,142			411			—			—			24,366			28,074
OPERATING INCOME / LOSS	85,902			72,051			(22,010		)	25,917			(19,816		)	4,671			—			(26,965		)	119,750
Interest and other income, net	4,774			9,079			1			347			(912		)	—			—			1,161			14,450
Interest expense, net	(14,883		)	(47		)	(3,627		)	(21		)	(3		)	—			—			(2,997		)	(21,578		)
Fair value adjustments, net	(45,771		)	—			(2,647		)	—			—			—			—			3,696			(44,722		)
Income tax expense	(10,015		)	(41,684		)	—			—			993			(202		)	—			(5,865		)	(56,773		)
Net income (loss)	$	20,007		$	39,399		$	(28,283	)	$	26,243		$	(19,738	)	$	4,469		$	—		$	(30,970	)	$	11,127
Segment assets (A)	$	1,926,695		$	299,041		$	520,619		$	104,066		$	11,339		$	32,619		$	—		$	18,613		$	2,912,992
Capital expenditures (B)	$	29,665		$	22,413		$	29,235		$	10,362		$	1,194		$	—		$	—		$	988		$	93,857
(A) Segment assets consist of receivables, prepaids, inventories, property, plant, and equipment, and mining properties
(B) Capital expenditures are presented on a cash basis
	September 30, 2013			December 31, 2012
Assets
Total assets for reportable segments	$	3,312,168		$	2,974,056
Cash and cash equivalents	211,434			125,440
Short term investments	—			999
Other assets	113,315			120,906
Total consolidated assets	$	3,636,917		$	3,221,401
Geographic Information
	September 30, 2013			December 31, 2012
Long Lived Assets:
United States	$	525,573		$	514,687
Australia	26,469			29,408
Argentina	94,844			95,134
Bolivia	235,059			240,905
Mexico	2,133,645			1,795,677
Total	$	3,015,590		$	2,675,811
	Three months ended September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Revenues:
United States	$	63,186		$	72,694		$	207,689		$	157,106
Mexico	104,524			102,642			248,167			362,729
Bolivia	28,819			46,192			111,196			140,951
Australia	4,296			4,132			10,757			16,077
Argentina	—			4,933			(662		)	12,700
Total	$	200,825		$	230,593		$	577,147		$	689,563

Supplemental_Guarantor_Informa

Supplemental Guarantor Information	9 Months Ended
	Sep. 30, 2013
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. and Coeur South America Corp. (collectively, the “Subsidiary Guarantors”) of the $300 million aggregate principal amount of 7.875% senior notes issued by Coeur on January 29, 2013. 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, the guarantees are full and unconditional and no other subsidiary of Coeur guaranteed any security issued under the Registration Statement. There are no restrictions on the ability of Coeur to obtain funds from its subsidiaries by dividend or loan.
	CONDENSED CONSOLIDATING BALANCE SHEET
	30-Sep-13
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS
	CURRENT ASSETS
	Cash and cash equivalents	$	131,811		$	399		$	79,224		$	—		$	211,434
	Investments	—			—			—			—			—
	Receivables	353			16,517			57,547			—			74,417
	Ore on leach pad	—			39,880			—			—			39,880
	Metal and other inventory	—			31,511			92,026			—			123,537
	Deferred tax assets	—			—			2,713			—			2,713
	Restricted assets	—			—			2,015			—			2,015
	Prepaid expenses and other	6,682			6,036			14,060			—			26,778
		138,846			94,343			247,585			—			480,774
	NON-CURRENT ASSETS
	Property, plant and equipment, net	6,085			195,966			447,540			—			649,591
	Mining properties, net	—			323,060			2,042,939			—			2,365,999
	Ore on leach pad	—			31,966			—			—			31,966
	Restricted assets	18,695			60			6,159			—			24,914
	Marketable securities	17,616			—			—			—			17,616
	Receivables	—			—			37,191			—			37,191
	Debt issuance costs, net	11,351			—			—			—			11,351
	Deferred tax assets	955			—			149			—			1,104
	Net investment in subsidiaries	1,852,147			—			1,578,799			(3,430,946		)	—
	Other	53,194			12,232			320,407			(369,422		)	16,411
	TOTAL ASSETS	$	2,098,889		$	657,627		$	4,680,769		$	(3,800,368	)	$	3,636,917
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	CURRENT LIABILITIES
	Accounts payable	$	5,287		$	18,755		$	39,568		$	—		$	63,610
	Accrued liabilities and other	2,335			864			6,390			—			9,589
	Accrued income taxes	34			—			8,495			—			8,529
	Accrued payroll and related benefits	4,934			6,465			7,896			—			19,295
	Accrued interest payable	4,012			4			1,050			(1,038		)	4,028
	Debt and capital leases	—			1,784			306,734			(304,650		)	3,868
	Royalty obligations	—			2,428			46,641			—			49,069
	Reclamation and mine closure	—			—			947			(504		)	443
	Deferred tax liabilities	—			—			121			—			121
		16,602			30,300			417,842			(306,192		)	158,552
	NON-CURRENT LIABILITIES
	Debt and capital leases	305,334			283			64,487			(63,732		)	306,372
	Royalty obligations	—			21,981			68,911			—			90,892
	Reclamation and mine closure	—			43,993			11,375			504			55,872
	Deferred tax liabilities	113,130			—			596,780			—			709,910
	Other long-term liabilities	2,299			329			20,743			—			23,371
	Intercompany payable (receivable)	(630,424		)	412,112			218,312			—			—
		(209,661		)	478,698			980,608			(63,228		)	1,186,417
	STOCKHOLDERS’ EQUITY
	Common stock	1,006			350			122,826			(123,176		)	1,006
	Additional paid-in capital	2,756,377			107,734			3,235,571			(3,343,305		)	2,756,377
	Accumulated deficit	(465,191		)	40,545			(76,078		)	35,533			(465,191		)
	Accumulated other comprehensive loss	(244		)	—			—			—			(244		)
		2,291,948			148,629			3,282,319			(3,430,948		)	2,291,948
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	2,098,889		$	657,627		$	4,680,769		$	(3,800,368	)	$	3,636,917
	CONDENSED CONSOLIDATING BALANCE SHEET
	31-Dec-12
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS	(In thousands, except share data)
	CURRENT ASSETS
	Cash and cash equivalents	$	86,788		$	400		$	38,252		$	—		$	125,440
	Investments	999			—			—			—			999
	Receivables	8,520			7,643			46,275			—			62,438
Ore on leach pad	—			22,991			—			—			22,991
Metal and other inventory	—			45,906			124,764			—			170,670
Deferred tax assets	—			—			2,458			—			2,458
Restricted assets	—			—			396			—			396
Prepaid expenses and other	3,395			5,947			11,448			—			20,790
	99,702			82,887			223,593			—			406,182
NON-CURRENT ASSETS
Property, plant and equipment, net	4,183			208,857			470,962			—			684,002
Mining properties, net	—			301,506			1,690,303			—			1,991,809
Ore on leach pad	—			21,356			—			—			21,356
Restricted assets	18,922			60			5,988			—			24,970
Marketable securities	27,065			—			—			—			27,065
Receivables	—			—			48,767			—			48,767
Debt issuance costs, net	3,713			—			—			—			3,713
Deferred tax assets	955			—			—			—			955
Net investment in subsidiaries	1,553,434			—			1,285,862			(2,839,296		)	—
Other	39,120			12,360			318,330			(357,228		)	12,582
TOTAL ASSETS	$	1,747,094		$	627,026		$	4,043,805		$	(3,196,524	)	$	3,221,401
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	2,954		$	17,211		$	37,317		$	—		$	57,482
Accrued liabilities and other	1,418			4,014			4,570			—			10,002
Accrued income taxes	257			—			26,851			—			27,108
Accrued payroll and related benefits	7,477			8,158			5,671			—			21,306
Accrued interest payable	463			5			1,002			(992		)	478
Debt and capital leases	48,081			3,013			309,539			(304,650		)	55,983
Royalty obligations	—			—			65,104			—			65,104
Reclamation and mine closure	—			—			1,445			(777		)	668
Deferred tax liabilities	—			—			121			—			121
	60,650			32,401			451,620			(306,419		)	238,252
NON-CURRENT LIABILITIES
Debt and capital leases	—			1,675			53,367			(51,582		)	3,460
Royalty obligations	—			—			141,879			—			141,879
Reclamation and mine closure	—			23,149			10,744			777			34,670
Deferred tax liabilities	115,425			—			462,063			—			577,488
Other long-term liabilities	955			8,086			18,331			—			27,372
Intercompany payable (receivable)	(628,216		)	390,480			237,736			—			—
	(511,836		)	423,390			924,120			(50,805		)	784,869
STOCKHOLDERS’ EQUITY
Common stock	903			350			22,760			(23,110		)	903
Additional paid-in capital	2,601,254			107,734			2,748,173			(2,855,907		)	2,601,254
Accumulated deficit	(396,156		)	63,151			(102,868		)	39,717			(396,156		)
Accumulated other comprehensive loss	(7,721		)	—			—			—			(7,721		)
	2,198,280			171,235			2,668,065			(2,839,300		)	2,198,280
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,747,094		$	627,026		$	4,043,805		$	(3,196,524	)	$	3,221,401
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	63,187		$	137,638		$	—		$	200,825
Production costs applicable to sales	—			(45,346		)	(86,382		)	—			(131,728		)
Depreciation, depletion and amortization	(244		)	(21,054		)	(39,576		)	—			(60,874		)
Gross profit	(244		)	(3,213		)	11,680			—			8,223
COSTS AND EXPENSES
General and administrative	15,622			(143		)	761			—			16,240
Exploration	506			2,305			494			—			3,305
Litigation settlement	—			—			—			—			—
Loss on impairment and other	—			—			—			—			—
Pre-development, care, maintenance and other	—			159			3,796			—			3,955
Total costs and expenses	16,128			2,321			5,051			—			23,500
OPERATING INCOME (LOSS)	(16,372		)	(5,534		)	6,629			—			(15,277		)
OTHER INCOME AND EXPENSE
Fair value adjustments, net	(71		)	(5,315		)	(15,260		)	—			(20,646		)
Other than temporary impairment of marketable securities	(870		)	—			—			—			(870		)
Interest income and other, net	784			87			(1,912		)	(750		)	(1,791		)
Interest expense, net of capitalized interest	(6,665		)	(56		)	(3,691		)	750			(9,662		)
Total other income and expense, net	(6,822		)	(5,284		)	(20,863		)	—			(32,969		)
Income (loss) before income taxes	(23,194		)	(10,818		)	(14,234		)	—			(48,246		)
Income tax provision	5,613			(152		)	(3,480		)	—			1,981
Total income (loss) after taxes	(17,581		)	(10,970		)	(17,714		)	—			(46,265		)
Equity income (loss) in consolidated subsidiaries	(28,684		)	—			—			28,684			—
NET INCOME (LOSS)	$	(46,265	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(46,265	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(46,265	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(46,265	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	301			—			—			—			$	301
Reclassification adjustments for losses included in net income(A)	1,006			—			—			—			$	1,006
Other comprehensive income	1,307			—			—			—			1,307
COMPREHENSIVE INCOME (LOSS)	$	(44,958	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(44,958	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	72,695		$	157,898		$	—		$	230,593
Production costs applicable to sales	—			(47,896		)	(77,071		)	—			(124,967		)
Depreciation, depletion and amortization	(134		)	(13,609		)	(39,101		)	—			(52,844		)
Gross profit	(134		)	11,190			41,726			—			52,782
COSTS AND EXPENSES
General and administrative	9,097			871			298			—			10,266
Exploration	462			2,940			3,555			—			6,957
Loss on impairment and other	—			—			1,293			—			1,293
Pre-development, care, maintenance and other	—			277			—			—			277
Total costs and expenses	9,559			4,088			5,146			—			18,793
OPERATING INCOME (LOSS)	(9,693		)	7,102			36,580			—			33,989
OTHER INCOME AND EXPENSE
Fair value adjustments, net	901			(4,283		)	(34,266		)	—			(37,648		)
Other than temporary impairment of marketable securities	(605		)	—			—			—			(605		)
Interest income and other, net	1,133			86			13,018			(968		)	13,269
Interest expense, net of capitalized interest	(1,097		)	(1,840		)	(5,382		)	968			(7,351		)
Total other income and expense, net	332			(6,037		)	(26,630		)	—			(32,335		)
Income (loss) before income taxes	(9,361		)	1,065			9,950			—			1,654
Income tax provision	(465		)	—			(17,010		)	—			(17,475		)
Total income (loss) after taxes	(9,826		)	1,065			(7,060		)	—			(15,821		)
Equity income (loss) in consolidated subsidiaries	(5,995		)	—			—			5,995			—
NET INCOME (LOSS)	$	(15,821	)	$	1,065		$	(7,060	)	$	5,995		$	(15,821	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(15,821	)	$	1,065		$	(7,060	)	$	5,995		$	(15,821	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	6,026			—			—			—			6,026
Reclassification adjustments for losses included in net income(A)	605			—			—			—			605
Other comprehensive income	6,631			—			—			—			6,631
COMPREHENSIVE INCOME (LOSS)	$	(9,190	)	$	1,065		$	(7,060	)	$	5,995		$	(9,190	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	207,689		$	369,458		$	—		$	577,147
Production costs applicable to sales	—			(143,620		)	(219,817		)	—			(363,437		)
Depreciation, depletion and amortization	(694		)	(52,213		)	(116,056		)	—			(168,963		)
Gross profit	(694		)	11,856			33,585			—			44,747
COSTS AND EXPENSES
General and administrative	37,975			1,400			2,117			—			41,492
Exploration	1,169			5,167			10,584			—			16,920
Litigation settlement	—			32,046			—			—			32,046
Loss on impairment and other	—			—			205			—			205
Pre-development, care, maintenance and other	—			857			8,557			—			9,414
Total costs and expenses	39,144			39,470			21,463			—			100,077
OPERATING INCOME (LOSS)	(39,838		)	(27,614		)	12,122			—			(55,330		)
OTHER INCOME AND EXPENSE
Fair value adjustments, net	(1,593		)	5,263			60,235			—			63,905
Other than temporary impairment of marketable securities	(18,097		)	—			—			—			(18,097		)
Interest income and other, net	2,991			562			1,404			(2,473		)	2,484
Interest expense, net of capitalized interest	(18,984		)	(421		)	(13,392		)	2,473			(30,324		)
Total other income and expense, net	(35,683		)	5,404			48,247			—			17,968
Income (loss) before income taxes	(75,521		)	(22,210		)	60,369			—			(37,362		)
Income tax provision	2,303			(397		)	(33,579		)	—			(31,673		)
Total income (loss) after taxes	(73,218		)	(22,607		)	26,790			—			(69,035		)
Equity income (loss) in consolidated subsidiaries	4,183			—			—			(4,183		)	—
NET INCOME (LOSS)	$	(69,035	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(69,035	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(69,035	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(69,035	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	(10,756		)	—			—			—			(10,756		)
Reclassification adjustments for losses included in net income(A)	18,233			—			—			—			18,233
Other comprehensive income	7,477			—			—			—			7,477
COMPREHENSIVE INCOME (LOSS)	$	(61,558	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(61,558	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	157,106		$	532,457		$	—		$	689,563
Production costs applicable to sales	—			(111,409		)	(237,935		)	—			(349,344		)
Depreciation, depletion and amortization	(382		)	(33,635		)	(132,443		)	—			(166,460		)
Gross profit	(382		)	12,062			162,079			—			173,759
COSTS AND EXPENSES
General and administrative	24,133			1,637			686			—			26,456
Exploration	1,279			5,880			12,670			—			19,829
Loss on impairment and other	—			—			6,106			—			6,106
Pre-development, care, maintenance and other	—			1,580			38			—			1,618
Total costs and expenses	25,412			9,097			19,500			—			54,009
OPERATING INCOME (LOSS)	(25,794		)	2,965			142,579			—			119,750
OTHER INCOME AND EXPENSE
Fair value adjustments, net	3,696			(2,647		)	(45,771		)	—			(44,722		)
Other than temporary impairment of marketable securities	(605		)	—			—			—			(605		)
Interest income and other, net	4,805			870			13,214			(3,834		)	15,055
Interest expense, net of capitalized interest	(2,998		)	(3,648		)	(18,766		)	3,834			(21,578		)
Total other income and expense, net	4,898			(5,425		)	(51,323		)	—			(51,850		)
Income (loss) before income taxes	(20,896		)	(2,460		)	91,256			—			67,900
Income tax provision	(3,990		)	—			(52,783		)	—			(56,773		)
Total income (loss) after taxes	(24,886		)	(2,460		)	38,473			—			11,127
Equity income (loss) in consolidated subsidiaries	36,013			—			—			(36,013		)	—
NET INCOME (LOSS)	$	11,127		$	(2,460	)	$	38,473		$	(36,013	)	$	11,127
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	11,127		$	(2,460	)	$	38,473		$	(36,013	)	$	11,127
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	774			—			—			—			774
Reclassification adjustments for losses included in net income(A)	605			—			—			—			605
Other comprehensive income	1,379			—			—			—			1,379
COMPREHENSIVE INCOME (LOSS)	$	12,506		$	(2,460	)	$	38,473		$	(36,013	)	$	12,506
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(57,902	)	$	(2,282	)	$	57,186		$	29,802		$	26,804
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(1,307		)	(27		)	(1,355		)	—			(2,689		)
Proceeds from sales and maturities of short term investments	—			27			—			—			27
Capital expenditures	(711		)	(17,201		)	(14,814		)	—			(32,726		)
Other	(13		)	—			(35		)	—			(48		)
Investments in consolidated subsidiaries	29,802			—			—			(29,802		)	—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	27,771			(17,201		)	(16,204		)	(29,802		)	(35,436		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	—			(665		)	(1,159		)	—			(1,824		)
Payments on gold production royalty	—			—			(12,619		)	—			(12,619		)
Share repurchases	(14,995		)	—			—			—			(14,995		)
Net intercompany borrowings (lending)	(9,917		)	19,824			(9,907		)	—			—
Other	(27		)	—			—			—			(27		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(24,939		)	19,159			(23,685		)	—			(29,465		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(55,070		)	(324		)	17,297			—			(38,097		)
Cash and cash equivalents at beginning of period	186,881			723			61,927			—			249,531
Cash and cash equivalents at end of period	$	131,811		$	399		$	79,224		$	—		$	211,434
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(6,929	)	$	11,912		$	75,567		$	(815	)	$	79,735
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(4,071		)	(22		)	—			—			(4,093		)
Proceeds from sales and maturities of short term investments	255			22			60			—			337
Capital expenditures	(428		)	(13,811		)	(15,733		)	—			(29,972		)
Other	524			—			(45		)	—			479
Investments in consolidated subsidiaries	(815		)	—			—			815			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(4,535		)	(13,811		)	(15,718		)	815			(33,249		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	(3,721		)	(73,082		)	(3,515		)	—			(80,318		)
Payments on gold production royalty	—			—			(17,458		)	—			(17,458		)
Reductions of (additions to) restricted assets associated with the Kensington Term Facility	—			4,645			—			—			4,645
Share repurchases	(9,971		)	—			—			—			(9,971		)
Net intercompany borrowings (lending)	(18,609		)	70,142			(51,533		)	—			—
Other	134			—			—			—			134
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(32,167		)	1,705			(72,506		)	—			(102,968		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(43,631		)	(194		)	(12,657		)	—			(56,482		)
Cash and cash equivalents at beginning of period	124,906			537			73,954			—			199,397
Cash and cash equivalents at end of period	$	81,275		$	343		$	61,297		$	—		$	142,915
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(39,646	)	$	18,374		$	128,531		$	(4,183	)	$	103,076
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(2,906		)	(65		)	(5,051		)	—			(8,022		)
Proceeds from sales and maturities of short term investments	2,874			65			3,432			—			6,371
Capital expenditures	(1,268		)	(37,831		)	(33,655		)	—			(72,754		)
Acquisition of Orko Silver Corporation	(113,214		)	—			—			—			(113,214		)
Other	(19		)	443			739			—			1,163
Investments in consolidated subsidiaries	(7,671		)	—			3,488			4,183			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(122,204		)	(37,388		)	(31,047		)	4,183			(186,456		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of notes and bank borrowings	300,000			—			—			—			300,000
Payments on long-term debt, capital leases, and associated costs	(52,565		)	(2,621		)	(3,835		)	—			(59,021		)
Payments on gold production royalty	—			—			(43,548		)	—			(43,548		)
Share repurchases	(27,552		)	—			—			—			(27,552		)
Net intercompany borrowings (lending)	(12,505		)	21,634			(9,129		)	—			—
Other	(505		)	—			—			—			(505		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	206,873			19,013			(56,512		)	—			169,374
NET CHANGE IN CASH AND CASH EQUIVALENTS	45,023			(1		)	40,972			—			85,994
Cash and cash equivalents at beginning of period	86,788			400			38,252			—			125,440
Cash and cash equivalents at end of period	$	131,811		$	399		$	79,224		$	—		$	211,434
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	24,589		$	2,696		$	229,932		$	(47,276	)	$	209,941
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(11,914		)	(45		)	—			—			(11,959		)
Proceeds from sales and maturities of short term investments	20,933			45			60			—			21,038
Capital expenditures	(987		)	(39,598		)	(53,272		)	—			(93,857		)
Other	2,191			1			(533		)	—			1,659
Investments in consolidated subsidiaries	(47,276		)	—			—			47,276			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(37,053		)	(39,597		)	(53,745		)	47,276			(83,119		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	(4,004		)	(79,151		)	(11,407		)	—			(94,562		)
Payments on gold production royalty	—			—			(58,119		)	—			(58,119		)
Reductions of (additions to) restricted assets associated with the Kensington Term Facility	—			4,645			—			—			4,645
Share repurchases	(9,971		)	—			—			—			(9,971		)
Net intercompany borrowings (lending)	22,954			111,317			(134,271		)	—			—
Other	(912		)	—			—			—			(912		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	8,067			36,811			(203,797		)	—			(158,919		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(4,397		)	(90		)	(27,610		)	—			(32,097		)
Cash and cash equivalents at beginning of period	85,672			433			88,907			—			175,012
Cash and cash equivalents at end of period	$	81,275		$	343		$	61,297		$	—		$	142,915

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Use of Estimates	'
	Use of Estimates: The preparation of the Company’s consolidated financial statements requires management to make estimates and assumptions that affect the amounts reported in its condensed consolidated financial statements and accompanying notes. The most significant areas requiring the use of management’s estimates and assumptions relate to recoverable ounces from proven and probable reserves that are the basis of future cash flow estimates and units-of-production depreciation and amortization calculations; useful lives utilized for depreciation, depletion and amortization; estimates of future cash flows for long lived assets; estimates of recoverable gold and silver ounces in ore on leach pads; the amount and timing of reclamation and remediation costs; and valuation allowance for deferred tax assets.
Recently Adopted Accounting Pronouncements	'
	Recently Adopted Accounting Pronouncements:
	On January 1, 2013, the Company adopted ASU 2011-11, "Balance Sheet (Topic 201): Disclosures about Offsetting Assets and Liabilities." This ASU adds certain additional disclosure requirements about financial instruments and derivative instruments that are subject to netting arrangements. The adoption of ASU 2011-11 had no effect on the Company's financial position, results of operations or cash flows.
	On January 1, 2013, the Company adopted ASU 2013-02, "Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income." The new standard requires either in a single note or parenthetically on the face of the financial statements: (i) the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and (ii) the income statement line items affected by the reclassification. The adoption of ASU 2013-02 had no effect on the Company's financial position, results of operations or cash flows.
	Recently Issued Accounting Pronouncements:
	In July 2013, the FASB issued 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 update is effective prospectively for the Company's fiscal year beginning January 1, 2014.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Three months ended						Nine months ended September 30,
		September 30,
	In thousands except per share amounts	2013			2012			2013			2012
	Net income (loss) available to common stockholders	$	(46,265	)	$	(15,821	)	$	(69,035	)	$	11,127
	Weighted average shares
	Basic	100,778			89,429			96,893			89,550
	Effect of share based compensation plans	—			—			—			140
	Diluted	100,778			89,429			96,893			89,690
	Income (loss) per share
	Basic	$	(0.46	)	$	(0.18	)	$	(0.71	)	$	0.12
	Diluted	$	(0.46	)	$	(0.18	)	$	(0.71	)	$	0.12

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Financial assets and liabilities measured at fair value on recurring basis	'
	The following table sets forth 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. As required by accounting guidance, 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 September 30, 2013
		Total		Level 1		Level 2		Level 3
	Assets:
	Marketable equity securities	$	17,616	$	17,616	$	—	$	—
	Gold and silver put options	160		—		160		—
		$	17,776	$	17,616	$	160	$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	61,996	$	—	$	61,996	$	—
	Rochester NSR royalty obligation	24,409		—		—		24,409
	Other derivative instruments, net	2,069		—		2,069		—
		$	88,474	$	—	$	64,065	$	24,409
		Fair Value at December 31, 2012
		Total		Level 1		Level 2		Level 3
	Assets:
	Short term investments	$	999	$	999	$	—	$	—
	Marketable equity securities	27,065		27,065		—		—
	Other derivative instruments, net	943		—		943		—
		$	29,007	$	28,064	$	943	$	—
	Liabilities:
	Palmarejo royalty obligation embedded derivative	$	145,098	$	—	$	145,098	$	—
	Put and call options	9,299		—		9,299		—
		$	154,397	$	—	$	154,397	$	—
Financial Assets and Liabilities not Measured at Fair Value	'
	Financial assets and liabilities that are not measured at fair value at September 30, 2013 and December 31, 2012 are set forth below (in thousands):
		Fair Value at September 30, 2013
		Total		Level 1		Level 2		Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	5,131	$	5,131	$	—	$	—
	7.875% Senior Notes due 2021	$	304,314	$	304,314	$	—	$	—
	Palmarejo Gold Production Royalty Obligation	$	70,795	$	—	$	70,795	$	—
		Fair Value at December 31, 2012
		Total		Level 1		Level 2		Level 3
	Liabilities:
	3.25% Convertible Senior Notes due 2028	$	48,220	$	48,220	$	—	$	—
	Palmarejo Gold Production Royalty Obligation	$	90,617	$	—	$	90,617	$	—

Investments_Tables

Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Investments (Tables)	'
		Investments in marketable securities
		Adjusted		Gross			Gross		Estimated
		Cost		Unrealized			Unrealized		Fair Value
				Losses			Gains
	Marketable securities at September 30, 2013	$	17,860	$	(987	)	$	743	$	17,616
	Marketable securities at December 31, 2012	$	34,786	$	(10,443	)	$	2,722	$	27,065

Receivables_Tables

Receivables (Tables)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Receivables	'
	Receivables consist of the following (in thousands):
		September 30, 2013		December 31, 2012
	Receivables - current
	Accounts receivable - trade	$	16,295	$	8,701
	Refundable income tax	8,330		9,331
	Refundable value added tax	46,242		40,020
	Accounts receivable - other	3,550		4,386
		$	74,417	$	62,438
	Receivables - non-current
	Refundable value added tax	$	37,191	$	48,767

Metal_and_Other_Inventories_Ta

Metal and Other Inventories (Tables)	9 Months Ended
	Sep. 30, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Metal and other inventory consist of the following (in thousands):
		September 30, 2013		December 31, 2012
	Concentrate and doré inventory	$	57,519	$	91,130
	Supplies	66,018		79,540
	Metal and other inventory	$	123,537	$	170,670

Acquisition_of_Orko_Silver_Cor1

Acquisition of Orko Silver Corporation/La Preciosa Mineral Interests (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	Total consideration paid for the asset acquisition (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 Assets Acquired Through Business Combination at Fair Value	'
	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

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2013
Property, Plant and Equipment [Abstract]	'
Property, plant and equipment	'
	Property, plant and equipment consist of the following (in thousands):
		September 30, 2013			December 31, 2012
	Land	$	1,764		$	2,152
	Buildings and improvements	596,655			581,286
	Machinery and equipment	390,069			360,199
	Capitalized leases for machinery, equipment, buildings, and land	22,444			35,129
		1,010,932			978,766
	Accumulated depreciation and amortization	(373,931		)	(313,067		)
		637,001			665,699
	Construction in progress	12,590			18,303
		$	649,591		$	684,002

Mining_Properties_Tables

Mining Properties (Tables)	9 Months Ended
	Sep. 30, 2013
Mining Properties [Abstract]	'
Mining Properties	'
	Mining properties consist of the following (in thousands):
	September 30, 2013	Palmarejo			San			Kensington			Rochester			Endeavor			La Preciosa		Joaquin			Total
					Bartolomé
	Mining properties	$	170,789		$	70,371		$	345,447		$	148,626		$	—		$	—	$	—		$	735,233
	Accumulated depletion	(101,687		)	(21,270		)	(68,909		)	(102,105		)	—			—		—			(293,971		)
		69,102			49,101			276,538			46,521			—			—		—			441,262
	Mineral interests	1,660,580			26,643			—			—			44,033			408,352		93,429			2,233,037
	Accumulated depletion	(282,339		)	(8,398		)	—			—			(17,563		)	—		—			(308,300		)
		1,378,241			18,245			—			—			26,470			408,352		93,429			1,924,737
	Total mining properties	$	1,447,343		$	67,346		$	276,538		$	46,521		$	26,470		$	408,352	$	93,429		$	2,365,999
	31-Dec-12	Palmarejo			San			Kensington			Rochester			Endeavor			Joaquin		Total
					Bartolomé
	Mining properties	$	155,722		$	70,322		$	333,619		$	114,973		$	—		$	—	$	674,636
	Accumulated depletion	(82,037		)	(18,439		)	(46,649		)	(100,437		)	—			—		(247,562		)
		73,685			51,883			286,970			14,536			—			—		427,074
	Mineral interests	1,658,389			26,642			—			—			44,033			93,429		1,822,493
	Accumulated depletion	(235,795		)	(7,338		)	—			—			(14,625		)	—		(257,758		)
		1,422,594			19,304			—			—			29,408			93,429		1,564,735
	Total mining properties	$	1,496,279		$	71,187		$	286,970		$	14,536		$	29,408		$	93,429	$	1,991,809

Debt_and_Capital_Lease_Obligat1

Debt and Capital Lease Obligations (Table)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Long term debt and capital lease obligations	'
	The current and non-current portions of long-term debt and capital lease obligations as of September 30, 2013 and December 31, 2012 are as follows (in thousands):
		September 30,							December 31,
		2013							2012
		Current				Non-Current			Current				Non-Current
	3.25% Convertible Senior Notes due 2028	$	—			$	5,334		$	48,081			$	—
	7.875% Senior Notes due 2021	—				300,000			—				—
	Capital lease obligations	3,868				1,038			7,902				3,460
		$	3,868			$	306,372		$	55,983			$	3,460
Interest expenses incurred for various debt instruments	'
	Interest expense is made up of the following (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	3.25% Convertible Senior Notes due 2028	$	43		$	395		$	423		$	1,186
	7.875% Senior Notes due 2021	5,906			—			15,947			—
	Revolving Credit Facility	176			85			434			85
	Kensington Term Facility (terminated in 2012)	—			459			—			2,339
	Capital lease obligations	89			219			355			827
	Other debt obligations	18			351			287			583
	Accretion of Palmarejo gold production royalty obligation	4,023			4,384			12,192			15,047
	Amortization of debt issuance costs	540			1,331			1,604			1,838
	Accretion of debt discount	—			639			576			1,879
	Capitalized interest	(1,133		)	(512		)	(1,494		)	(2,206		)
	Total interest expense, net of capitalized interest	$	9,662		$	7,351		$	30,324		$	21,578

Reclamation_and_Mine_Closure_T

Reclamation and Mine Closure (Tables)	9 Months Ended
	Sep. 30, 2013
Asset Retirement Obligation Disclosure [Abstract]	'
Asset Retirement Obligation	'
	Changes to the Company’s asset retirement obligations for active mining sites are as follows (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	Asset retirement obligation - beginning	$	35,578		$	34,510		$	34,456		$	32,714
	Accretion	777			714			2,277			2,180
	Addition and changes in estimates	19,542			—			19,542			335
	Settlements	(124		)	(13		)	(502		)	(18		)
	Asset retirement obligation - ending	$	55,773		$	35,211		$	55,773		$	35,211

Income_Taxes_Tables

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income tax provision from continuing operations	'
	The following table summarizes the components of the Company’s income tax provision for the three and nine months ended September 30, 2013 and 2012 (in thousands):
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	United States	$	5,182		$	(465	)	$	1,905		$	(3,990	)
	Mexico	1,886			5,409			(17,585		)	(10,341		)
	Bolivia	(4,598		)	(23,106		)	(13,482		)	(41,684		)
	Other jurisdictions	(489		)	687			(2,511		)	(758		)
	Income tax provision from continuing operations	$	1,981		$	(17,475	)	$	(31,673	)	$	(56,773	)

ShareBased_Compensation_Plans_

Share-Based Compensation Plans (Tables)	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Issuance of new grants	'
	The following table summarizes the new grants issued during the nine months ended September 30, 2013:
	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
	January 2, 2013		1,805	$	25.2	—	$	—	—	$	—
	January 22, 2013		47,994	$	23.9	77,715	$	14.77	95,991	$	27.41
	February 4, 2013		18,668	$	22.63	17,692	$	14	21,828	$	25.96
	April 1, 2013		157,142	$	18.51	73,290	$	11.39	28,662	$	21.23
	May 21, 2013		111,193	$	13.66	—	$	—	—	$	—
	July 1, 2013		69,774	$	12.72	16,157	$	7.93	20,451	$	14.59
Summary of stock option and SAR's activity	'
	The following options and stock appreciation rights were exercised during the nine months ended September 30, 2013:
	Award Type		Number of	Weighted Average		Number of Exercisable Units	Weighted Average
			Exercised Units	Exercised Price			Exercisable Price
	Options		926	$	20.8	252,713	$	33.07
	Stock Appreciation Rights		3,846	$	15.4	65,019	$	14.21
Weighted average fair value of SAR's, performance units and RSU's outstanding	'
	The following shows the weighted average fair value of SARs outstanding at September 30, 2013:
		SARs
	Weighted average fair value	$	3.09

Derivative_Financial_Instrumen1

Derivative Financial Instruments and Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative instruments Settlement	'
	As of September 30, 2013, the Company had the following derivative instruments that settle in each of the years indicated in the table (in thousands except average prices, ounces and notional data):
		2013				2014				2015				Thereafter
	Palmarejo gold production royalty	$	8,633			$	24,895			$	24,691			$	19,236
	Average gold price in excess of minimum contractual deduction	$	502			$	498			$	494			$	490
	Notional ounces	17,201				50,004				50,004				39,285
	Mexican peso forward purchase contracts	$	12,000			$	12,000			$	—			$	—
	Average rate (MXP/$)	$	12.9			$	12.2			$	—			$	—
	Mexican peso notional amount	154,816				146,460				—				—
	Mexican peso put options purchased	$	—			$	24,000			$	—			$	—
	Average strike price (MXP/$)	$	—			$	12.5			$	—			$	—
	Mexico peso notional amount	—				300,000				—				—
	Mexican peso call options sold	$	—			$	24,000			$	—			$	—
	Average strike price (MXP/$)	$	—			$	15.06			$	—			$	—
	Mexico peso notional amount	—				361,500				—				—
	Silver concentrate sales agreements	$	2,326			$	—			$	—			$	—
	Average silver price	$	22.82			$	—			$	—			$	—
	Notional ounces	101,908				—				—				—
	Gold concentrate sales agreements	$	30,123			$	—			$	—			$	—
	Average gold price	$	1,147			$	—			$	—			$	—
	Notional ounces	26,265				—				—				—
	Gold put options purchased	$	382			$	—			$	—			$	—
	Average gold strike price	$	1,200			$	—			$	—			$	—
	Notional ounces	25,000				—				—				—
	Silver put options purchased	$	186			$	—			$	—			$	—
	Average silver strike price	$	17			$	—			$	—			$	—
	Notional ounces	1,250,000				—				—				—
Fair value of the derivative instruments	'
	The following summarizes the classification of the fair value of the derivative instruments as of September 30, 2013 and December 31, 2012 (in thousands):
		September 30, 2013
		Prepaid				Accrued				Current				Non-current
		expenses and				liabilities and				portion of				portion of
		other				other				royalty				royalty
										obligation				obligation
	Foreign exchange contracts Peso	$	9			$	1,355			$	—			$	—
	Palmarejo gold production royalty	—				—				22,590				39,406
	Gold and silver put options	160				—				—				—
	Concentrate sales contracts	42				766				—				—
		$	211			$	2,121			$	22,590			$	39,406
		December 31, 2012
		Prepaid				Accrued				Other long-				Current				Non-current
		expenses and				liabilities and				term				portion of				portion of
		other				other				Liabilities				royalty				royalty
														obligation				obligation
	Foreign exchange contracts Peso	$	376			$	300			$	—			$	—			$	—
	Palmarejo gold production royalty	—				—				—				41,146				103,952
	Put and call options, net	—				2,025				7,274				—				—
	Concentrate sales contracts	1,030				163				—				—				—
		$	1,406			$	2,488			$	7,274			$	41,146			$	103,952
Gain losses on derivative instruments	'
	The following represent mark-to-market gains (losses) on derivative instruments for the three and nine months ended September 30, 2013 and 2012 (in thousands):
				Three months ended September 30,								Nine months ended September 30,
	Financial statement line	Derivative		2013				2012				2013				2012
	Sales of metal	Concentrate sales contracts		$	718			$	1,591			$	(2,037	)		$	2,050
	Production costs applicable to sales	Forward foreign exchange contracts		(99		)		394				732				(1,540		)
	Fair value adjustments, net	Foreign exchange contracts MXN Peso		100				621				(1,422		)		3,394
	Fair value adjustments, net	Silver ounces receivable		—				280				—				302
	Fair value adjustments, net	Palmarejo gold royalty		(15,279		)		(34,266		)		60,216				(45,771		)
	Fair value adjustments, net	Put and call options		(3,104		)		(4,283		)		7,474				(2,647		)
				$	(17,664	)		$	(35,663	)		$	64,963			$	(44,212	)

Significant_Customers_Tables

Significant Customers (Tables)	9 Months Ended
	Sep. 30, 2013
Significant Customers [Abstract]	'
Schedule of Significant Customers	'
	The following table indicates customers that represent 10% or more of total sales of metal for the three months ended September 30, 2013 and 2012 (in millions):
		Three months ended September 30,
	Customer	2013		2012		Segments reporting sales of metal
	International Commodities	$	41.5	$	10.8	Palmarejo, Rochester
	Mitsui	$	29.4	$	14.2	Palmarejo, Rochester
	TD Bank Group	$	28.9	$	19.4	Palmarejo, Rochester
	Auramet	$	28.5	$	32	Rochester, Kensington
	Valcambi	$	22.5	$	112.7	Palmarejo, San Bartolomé
	China National Gold	$	21.3	$	9.6	Kensington
	The following table indicates customers that represent 10% or more of total sales of metal for the nine months ended September 30, 2013 and 2012 (in millions):
		Nine months ended September 30,
	Customer	2013		2012		Segments reporting sales of metal
	Auramet	$	97.4	$	65.5	Palmarejo, San Bartolomé, Kensington
	International Commodities	$	82	$	34.7	Palmarejo, San Bartolomé, Rochester
	TD Bank Group	$	78.1	$	44.6	Palmarejo, Rochester
	Valcambi	$	61.9	$	368.9	Palmarejo, San Bartolomé

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Financial information relating to the reporting segments	'
	Financial information relating to the Company’s segments is as follows (in thousands):
	Three months ended September 30, 2013	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
		Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	104,524		$	28,819		$	38,927		$	24,259		$	—		$	4,296		$	—		$	—		$	200,825
	Production costs applicable to sales	(66,839		)	(17,673		)	(27,484		)	(17,861		)	—			(1,871		)	—			—			(131,728		)
	Depreciation and depletion	(33,654		)	(4,909		)	(18,190		)	(2,860		)	(108		)	(894		)	(11		)	(248		)	(60,874		)
	Gross profit	4,031			6,237			(6,747		)	3,538			(108		)	1,531			(11		)	(248		)	8,223
	Exploration expense	860			(3		)	1,496			624			282			—			(671		)	717			3,305
	Other operating expenses	—			1,969			(6		)	173			738			—			1,888			15,433			20,195
	OPERATING INCOME / LOSS	3,171			4,271			(8,237		)	2,741			(1,128		)	1,531			(1,228		)	(16,398		)	(15,277		)
	Interest and other income, net	(2,281		)	582			—			60			(595		)	—			19			(446		)	(2,661		)
	Interest expense, net	(2,925		)	(12		)	(51		)	(5		)	—			—			—			(6,669		)	(9,662		)
	Fair value adjustments, net	(15,260		)	—			(2,952		)	(2,363		)	—			—			—			(71		)	(20,646		)
	Income tax expense	1,564			(4,648		)	—			—			5			—			—			5,060			1,981
	Net income (loss)	$	(15,731	)	$	193		$	(11,240	)	$	433		$	(1,718	)	$	1,531		$	(1,209	)	$	(18,524	)	$	(46,265	)
	Segment assets (A)	$	1,825,599		$	289,274		$	481,613		$	161,993		$	6,146		$	27,938		$	410,085		$	109,520		$	3,312,168
	Capital expenditures (B)	$	10,290		$	4,166		$	4,934		$	12,267		$	—		$	—		$	358		$	711		$	32,726
	Three months ended September 30, 2012	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
		Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	102,642		$	46,192		$	36,450		$	36,244		$	4,933		$	4,132		$	—		$	—		$	230,593
	Production costs applicable to sales	(48,672		)	(19,937		)	(26,881		)	(21,014		)	(6,481		)	(1,982		)	—			—			(124,967		)
	Depreciation and depletion	(34,007		)	(4,163		)	(11,512		)	(2,061		)	(32		)	(898		)	—			(171		)	(52,844		)
	Gross profit	19,963			22,092			(1,943		)	13,169			(1,580		)	1,252			—			(171		)	52,782
	Exploration expense	2,288			50			1,476			1,158			1,217			—			—			768			6,957
	Loss on impairment	—			—			—			—			1,293			—			—			—			1,293
	Other operating expenses	—			50			39			1,109			133			—			—			9,212			10,543
	OPERATING INCOME / LOSS	17,675			21,992			(3,458		)	10,902			(4,223		)	1,252			—			(10,151		)	33,989
	Interest and other income, net	4,914			8,353			—			59			(342		)	—			—			(320		)	12,664
	Interest expense	(4,401		)	(11		)	(1,834		)	(6		)	(2		)	—			—			(1,097		)	(7,351		)
	Fair value adjustments, net	(34,266		)	—			(4,283		)	—			—			—			—			901			(37,648		)
	Income tax benefit (expense)	5,495			(23,106		)	—			—			1,233			(202		)	—			(895		)	(17,475		)
	Net income (loss)	$	(10,583	)	$	7,228		$	(9,575	)	$	10,955		$	(3,334	)	$	1,050		$	—		$	(11,562	)	$	(15,821	)
	Segment assets (A)	$	1,926,695		$	299,041		$	520,619		$	104,066		$	11,339		$	32,619		$	—		$	18,613		$	2,912,992
	Capital expenditures (B)	$	11,321		$	4,406		$	9,034		$	4,777		$	6		$	—		$	—		$	428		$	29,972
	Nine months ended	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
	30-Sep-13	Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	248,167		$	111,196		$	109,053		$	98,636		$	(662	)	$	10,757		$	—		$	—		$	577,147
	Production costs applicable to sales	(148,776		)	(66,165		)	(81,203		)	(62,418		)	—			(4,874		)	—			(1		)	(363,437		)
	Depreciation and depletion	(98,161		)	(14,606		)	(44,837		)	(7,365		)	(338		)	(2,938		)	(12		)	(706		)	(168,963		)
	Gross profit	1,230			30,425			(16,987		)	28,853			(1,000		)	2,945			(12		)	(707		)	44,747
	Exploration expense	6,029			76			2,732			1,621			4,460			—			19			1,983			16,920
	Loss on impairment	—			—			—			—			205			—			—			—			205
	Other operating expenses	—			5,691			204			34,494			2,643			—			1,888			38,032			82,952
	OPERATING INCOME / LOSS	(4,799		)	24,658			(19,923		)	(7,262		)	(8,308		)	2,945			(1,919		)	(40,722		)	(55,330		)
	Interest and other income, net	(768		)	1,871			281			117			166			—			8			(17,288		)	(15,613		)
	Interest expense, net	(10,853		)	(59		)	(405		)	(16		)	—			—			—			(18,991		)	(30,324		)
	Fair value adjustments, net	60,234			—			7,626			(2,363		)	—			—			—			(1,592		)	63,905
	Income tax expense	(17,383		)	(13,482		)	(1		)	—			(38		)	—			—			(769		)	(31,673		)
	Net income (loss)	$	26,431		$	12,988		$	(12,422	)	$	(9,524	)	$	(8,180	)	$	2,945		$	(1,911	)	$	(79,362	)	$	(69,035	)
	Segment assets (A)	$	1,825,599		$	289,274		$	481,613		$	161,993		$	6,146		$	27,938		$	410,085		$	109,520		$	3,312,168
	Capital expenditures (B)	$	24,770		$	7,782		$	15,670		$	22,161		$	10		$	—		$	1,093		$	1,268		$	72,754
	Nine months ended	Palmarejo			San Bartolomé			Kensington			Rochester			Martha			Endeavor			La Preciosa			Other			Total
	30-Sep-12	Mine			Mine			Mine			Mine			Mine			Mine
	Sales of metals	$	362,729		$	140,951		$	67,950		$	89,156		$	12,700		$	16,077		$	—		$	—		$	689,563
	Production costs applicable to sales	(157,070		)	(56,317		)	(60,078		)	(51,331		)	(17,276		)	(7,272		)	—			—			(349,344		)
	Depreciation and depletion	(114,525		)	(12,452		)	(27,836		)	(5,763		)	(1,332		)	(4,134		)	—			(418		)	(166,460		)
	Gross profit	91,134			72,182			(19,964		)	32,062			(5,908		)	4,671			—			(418		)	173,759
	Exploration expense	5,232			51			1,971			3,003			7,391			—			—			2,181			19,829
	Loss on impairment	—			—			—			—			6,106			—			—			—			6,106
	Other operating expenses	—			80			75			3,142			411			—			—			24,366			28,074
	OPERATING INCOME / LOSS	85,902			72,051			(22,010		)	25,917			(19,816		)	4,671			—			(26,965		)	119,750
	Interest and other income, net	4,774			9,079			1			347			(912		)	—			—			1,161			14,450
	Interest expense, net	(14,883		)	(47		)	(3,627		)	(21		)	(3		)	—			—			(2,997		)	(21,578		)
Fair value adjustments, net	(45,771		)	—			(2,647		)	—			—			—			—			3,696			(44,722		)
Income tax expense	(10,015		)	(41,684		)	—			—			993			(202		)	—			(5,865		)	(56,773		)
Net income (loss)	$	20,007		$	39,399		$	(28,283	)	$	26,243		$	(19,738	)	$	4,469		$	—		$	(30,970	)	$	11,127
Segment assets (A)	$	1,926,695		$	299,041		$	520,619		$	104,066		$	11,339		$	32,619		$	—		$	18,613		$	2,912,992
Capital expenditures (B)	$	29,665		$	22,413		$	29,235		$	10,362		$	1,194		$	—		$	—		$	988		$	93,857
(A) Segment assets consist of receivables, prepaids, inventories, property, plant, and equipment, and mining properties
(B) Capital expenditures are presented on a cash basis
Consolidated Assets	'
		September 30, 2013			December 31, 2012
	Assets
	Total assets for reportable segments	$	3,312,168		$	2,974,056
	Cash and cash equivalents	211,434			125,440
	Short term investments	—			999
	Other assets	113,315			120,906
	Total consolidated assets	$	3,636,917		$	3,221,401
Long Lived Assets by Country	'
	Geographic Information
		September 30, 2013			December 31, 2012
	Long Lived Assets:
	United States	$	525,573		$	514,687
	Australia	26,469			29,408
	Argentina	94,844			95,134
	Bolivia	235,059			240,905
	Mexico	2,133,645			1,795,677
	Total	$	3,015,590		$	2,675,811
Revenue by Country	'
		Three months ended September 30,						Nine months ended September 30,
		2013			2012			2013			2012
	Revenues:
	United States	$	63,186		$	72,694		$	207,689		$	157,106
	Mexico	104,524			102,642			248,167			362,729
	Bolivia	28,819			46,192			111,196			140,951
	Australia	4,296			4,132			10,757			16,077
	Argentina	—			4,933			(662		)	12,700
	Total	$	200,825		$	230,593		$	577,147		$	689,563

Supplemental_Guarantor_Informa1

Supplemental Guarantor Information (Tables)	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Schedule of Condensed Financial Statements	'
	CONDENSED CONSOLIDATING BALANCE SHEET
	30-Sep-13
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS
	CURRENT ASSETS
	Cash and cash equivalents	$	131,811		$	399		$	79,224		$	—		$	211,434
	Investments	—			—			—			—			—
	Receivables	353			16,517			57,547			—			74,417
	Ore on leach pad	—			39,880			—			—			39,880
	Metal and other inventory	—			31,511			92,026			—			123,537
	Deferred tax assets	—			—			2,713			—			2,713
	Restricted assets	—			—			2,015			—			2,015
	Prepaid expenses and other	6,682			6,036			14,060			—			26,778
		138,846			94,343			247,585			—			480,774
	NON-CURRENT ASSETS
	Property, plant and equipment, net	6,085			195,966			447,540			—			649,591
	Mining properties, net	—			323,060			2,042,939			—			2,365,999
	Ore on leach pad	—			31,966			—			—			31,966
	Restricted assets	18,695			60			6,159			—			24,914
	Marketable securities	17,616			—			—			—			17,616
	Receivables	—			—			37,191			—			37,191
	Debt issuance costs, net	11,351			—			—			—			11,351
	Deferred tax assets	955			—			149			—			1,104
	Net investment in subsidiaries	1,852,147			—			1,578,799			(3,430,946		)	—
	Other	53,194			12,232			320,407			(369,422		)	16,411
	TOTAL ASSETS	$	2,098,889		$	657,627		$	4,680,769		$	(3,800,368	)	$	3,636,917
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	CURRENT LIABILITIES
	Accounts payable	$	5,287		$	18,755		$	39,568		$	—		$	63,610
	Accrued liabilities and other	2,335			864			6,390			—			9,589
	Accrued income taxes	34			—			8,495			—			8,529
	Accrued payroll and related benefits	4,934			6,465			7,896			—			19,295
	Accrued interest payable	4,012			4			1,050			(1,038		)	4,028
	Debt and capital leases	—			1,784			306,734			(304,650		)	3,868
	Royalty obligations	—			2,428			46,641			—			49,069
	Reclamation and mine closure	—			—			947			(504		)	443
	Deferred tax liabilities	—			—			121			—			121
		16,602			30,300			417,842			(306,192		)	158,552
	NON-CURRENT LIABILITIES
	Debt and capital leases	305,334			283			64,487			(63,732		)	306,372
	Royalty obligations	—			21,981			68,911			—			90,892
	Reclamation and mine closure	—			43,993			11,375			504			55,872
	Deferred tax liabilities	113,130			—			596,780			—			709,910
	Other long-term liabilities	2,299			329			20,743			—			23,371
	Intercompany payable (receivable)	(630,424		)	412,112			218,312			—			—
		(209,661		)	478,698			980,608			(63,228		)	1,186,417
	STOCKHOLDERS’ EQUITY
	Common stock	1,006			350			122,826			(123,176		)	1,006
	Additional paid-in capital	2,756,377			107,734			3,235,571			(3,343,305		)	2,756,377
	Accumulated deficit	(465,191		)	40,545			(76,078		)	35,533			(465,191		)
	Accumulated other comprehensive loss	(244		)	—			—			—			(244		)
		2,291,948			148,629			3,282,319			(3,430,948		)	2,291,948
	TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	2,098,889		$	657,627		$	4,680,769		$	(3,800,368	)	$	3,636,917
	CONDENSED CONSOLIDATING BALANCE SHEET
	31-Dec-12
		Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	ASSETS	(In thousands, except share data)
	CURRENT ASSETS
	Cash and cash equivalents	$	86,788		$	400		$	38,252		$	—		$	125,440
	Investments	999			—			—			—			999
	Receivables	8,520			7,643			46,275			—			62,438
	Ore on leach pad	—			22,991			—			—			22,991
	Metal and other inventory	—			45,906			124,764			—			170,670
Deferred tax assets	—			—			2,458			—			2,458
Restricted assets	—			—			396			—			396
Prepaid expenses and other	3,395			5,947			11,448			—			20,790
	99,702			82,887			223,593			—			406,182
NON-CURRENT ASSETS
Property, plant and equipment, net	4,183			208,857			470,962			—			684,002
Mining properties, net	—			301,506			1,690,303			—			1,991,809
Ore on leach pad	—			21,356			—			—			21,356
Restricted assets	18,922			60			5,988			—			24,970
Marketable securities	27,065			—			—			—			27,065
Receivables	—			—			48,767			—			48,767
Debt issuance costs, net	3,713			—			—			—			3,713
Deferred tax assets	955			—			—			—			955
Net investment in subsidiaries	1,553,434			—			1,285,862			(2,839,296		)	—
Other	39,120			12,360			318,330			(357,228		)	12,582
TOTAL ASSETS	$	1,747,094		$	627,026		$	4,043,805		$	(3,196,524	)	$	3,221,401
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	2,954		$	17,211		$	37,317		$	—		$	57,482
Accrued liabilities and other	1,418			4,014			4,570			—			10,002
Accrued income taxes	257			—			26,851			—			27,108
Accrued payroll and related benefits	7,477			8,158			5,671			—			21,306
Accrued interest payable	463			5			1,002			(992		)	478
Debt and capital leases	48,081			3,013			309,539			(304,650		)	55,983
Royalty obligations	—			—			65,104			—			65,104
Reclamation and mine closure	—			—			1,445			(777		)	668
Deferred tax liabilities	—			—			121			—			121
	60,650			32,401			451,620			(306,419		)	238,252
NON-CURRENT LIABILITIES
Debt and capital leases	—			1,675			53,367			(51,582		)	3,460
Royalty obligations	—			—			141,879			—			141,879
Reclamation and mine closure	—			23,149			10,744			777			34,670
Deferred tax liabilities	115,425			—			462,063			—			577,488
Other long-term liabilities	955			8,086			18,331			—			27,372
Intercompany payable (receivable)	(628,216		)	390,480			237,736			—			—
	(511,836		)	423,390			924,120			(50,805		)	784,869
STOCKHOLDERS’ EQUITY
Common stock	903			350			22,760			(23,110		)	903
Additional paid-in capital	2,601,254			107,734			2,748,173			(2,855,907		)	2,601,254
Accumulated deficit	(396,156		)	63,151			(102,868		)	39,717			(396,156		)
Accumulated other comprehensive loss	(7,721		)	—			—			—			(7,721		)
	2,198,280			171,235			2,668,065			(2,839,300		)	2,198,280
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,747,094		$	627,026		$	4,043,805		$	(3,196,524	)	$	3,221,401
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	63,187		$	137,638		$	—		$	200,825
Production costs applicable to sales	—			(45,346		)	(86,382		)	—			(131,728		)
Depreciation, depletion and amortization	(244		)	(21,054		)	(39,576		)	—			(60,874		)
Gross profit	(244		)	(3,213		)	11,680			—			8,223
COSTS AND EXPENSES
General and administrative	15,622			(143		)	761			—			16,240
Exploration	506			2,305			494			—			3,305
Litigation settlement	—			—			—			—			—
Loss on impairment and other	—			—			—			—			—
Pre-development, care, maintenance and other	—			159			3,796			—			3,955
Total costs and expenses	16,128			2,321			5,051			—			23,500
OPERATING INCOME (LOSS)	(16,372		)	(5,534		)	6,629			—			(15,277		)
OTHER INCOME AND EXPENSE
Fair value adjustments, net	(71		)	(5,315		)	(15,260		)	—			(20,646		)
Other than temporary impairment of marketable securities	(870		)	—			—			—			(870		)
Interest income and other, net	784			87			(1,912		)	(750		)	(1,791		)
Interest expense, net of capitalized interest	(6,665		)	(56		)	(3,691		)	750			(9,662		)
Total other income and expense, net	(6,822		)	(5,284		)	(20,863		)	—			(32,969		)
Income (loss) before income taxes	(23,194		)	(10,818		)	(14,234		)	—			(48,246		)
Income tax provision	5,613			(152		)	(3,480		)	—			1,981
Total income (loss) after taxes	(17,581		)	(10,970		)	(17,714		)	—			(46,265		)
Equity income (loss) in consolidated subsidiaries	(28,684		)	—			—			28,684			—
NET INCOME (LOSS)	$	(46,265	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(46,265	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(46,265	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(46,265	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	301			—			—			—			$	301
Reclassification adjustments for losses included in net income(A)	1,006			—			—			—			$	1,006
Other comprehensive income	1,307			—			—			—			1,307
COMPREHENSIVE INCOME (LOSS)	$	(44,958	)	$	(10,970	)	$	(17,714	)	$	28,684		$	(44,958	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	72,695		$	157,898		$	—		$	230,593
Production costs applicable to sales	—			(47,896		)	(77,071		)	—			(124,967		)
Depreciation, depletion and amortization	(134		)	(13,609		)	(39,101		)	—			(52,844		)
Gross profit	(134		)	11,190			41,726			—			52,782
COSTS AND EXPENSES
General and administrative	9,097			871			298			—			10,266
Exploration	462			2,940			3,555			—			6,957
Loss on impairment and other	—			—			1,293			—			1,293
Pre-development, care, maintenance and other	—			277			—			—			277
Total costs and expenses	9,559			4,088			5,146			—			18,793
OPERATING INCOME (LOSS)	(9,693		)	7,102			36,580			—			33,989
OTHER INCOME AND EXPENSE
Fair value adjustments, net	901			(4,283		)	(34,266		)	—			(37,648		)
Other than temporary impairment of marketable securities	(605		)	—			—			—			(605		)
Interest income and other, net	1,133			86			13,018			(968		)	13,269
Interest expense, net of capitalized interest	(1,097		)	(1,840		)	(5,382		)	968			(7,351		)
Total other income and expense, net	332			(6,037		)	(26,630		)	—			(32,335		)
Income (loss) before income taxes	(9,361		)	1,065			9,950			—			1,654
Income tax provision	(465		)	—			(17,010		)	—			(17,475		)
Total income (loss) after taxes	(9,826		)	1,065			(7,060		)	—			(15,821		)
Equity income (loss) in consolidated subsidiaries	(5,995		)	—			—			5,995			—
NET INCOME (LOSS)	$	(15,821	)	$	1,065		$	(7,060	)	$	5,995		$	(15,821	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(15,821	)	$	1,065		$	(7,060	)	$	5,995		$	(15,821	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	6,026			—			—			—			6,026
Reclassification adjustments for losses included in net income(A)	605			—			—			—			605
Other comprehensive income	6,631			—			—			—			6,631
COMPREHENSIVE INCOME (LOSS)	$	(9,190	)	$	1,065		$	(7,060	)	$	5,995		$	(9,190	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	207,689		$	369,458		$	—		$	577,147
Production costs applicable to sales	—			(143,620		)	(219,817		)	—			(363,437		)
Depreciation, depletion and amortization	(694		)	(52,213		)	(116,056		)	—			(168,963		)
Gross profit	(694		)	11,856			33,585			—			44,747
COSTS AND EXPENSES
General and administrative	37,975			1,400			2,117			—			41,492
Exploration	1,169			5,167			10,584			—			16,920
Litigation settlement	—			32,046			—			—			32,046
Loss on impairment and other	—			—			205			—			205
Pre-development, care, maintenance and other	—			857			8,557			—			9,414
Total costs and expenses	39,144			39,470			21,463			—			100,077
OPERATING INCOME (LOSS)	(39,838		)	(27,614		)	12,122			—			(55,330		)
OTHER INCOME AND EXPENSE
Fair value adjustments, net	(1,593		)	5,263			60,235			—			63,905
Other than temporary impairment of marketable securities	(18,097		)	—			—			—			(18,097		)
Interest income and other, net	2,991			562			1,404			(2,473		)	2,484
Interest expense, net of capitalized interest	(18,984		)	(421		)	(13,392		)	2,473			(30,324		)
Total other income and expense, net	(35,683		)	5,404			48,247			—			17,968
Income (loss) before income taxes	(75,521		)	(22,210		)	60,369			—			(37,362		)
Income tax provision	2,303			(397		)	(33,579		)	—			(31,673		)
Total income (loss) after taxes	(73,218		)	(22,607		)	26,790			—			(69,035		)
Equity income (loss) in consolidated subsidiaries	4,183			—			—			(4,183		)	—
NET INCOME (LOSS)	$	(69,035	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(69,035	)
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	(69,035	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(69,035	)
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	(10,756		)	—			—			—			(10,756		)
Reclassification adjustments for losses included in net income(A)	18,233			—			—			—			18,233
Other comprehensive income	7,477			—			—			—			7,477
COMPREHENSIVE INCOME (LOSS)	$	(61,558	)	$	(22,607	)	$	26,790		$	(4,183	)	$	(61,558	)
CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Sales of metal	$	—		$	157,106		$	532,457		$	—		$	689,563
Production costs applicable to sales	—			(111,409		)	(237,935		)	—			(349,344		)
Depreciation, depletion and amortization	(382		)	(33,635		)	(132,443		)	—			(166,460		)
Gross profit	(382		)	12,062			162,079			—			173,759
COSTS AND EXPENSES
General and administrative	24,133			1,637			686			—			26,456
Exploration	1,279			5,880			12,670			—			19,829
Loss on impairment and other	—			—			6,106			—			6,106
Pre-development, care, maintenance and other	—			1,580			38			—			1,618
Total costs and expenses	25,412			9,097			19,500			—			54,009
OPERATING INCOME (LOSS)	(25,794		)	2,965			142,579			—			119,750
OTHER INCOME AND EXPENSE
Fair value adjustments, net	3,696			(2,647		)	(45,771		)	—			(44,722		)
Other than temporary impairment of marketable securities	(605		)	—			—			—			(605		)
Interest income and other, net	4,805			870			13,214			(3,834		)	15,055
Interest expense, net of capitalized interest	(2,998		)	(3,648		)	(18,766		)	3,834			(21,578		)
Total other income and expense, net	4,898			(5,425		)	(51,323		)	—			(51,850		)
Income (loss) before income taxes	(20,896		)	(2,460		)	91,256			—			67,900
Income tax provision	(3,990		)	—			(52,783		)	—			(56,773		)
Total income (loss) after taxes	(24,886		)	(2,460		)	38,473			—			11,127
Equity income (loss) in consolidated subsidiaries	36,013			—			—			(36,013		)	—
NET INCOME (LOSS)	$	11,127		$	(2,460	)	$	38,473		$	(36,013	)	$	11,127
CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Net income (loss)	$	11,127		$	(2,460	)	$	38,473		$	(36,013	)	$	11,127
OTHER COMPREHENSIVE INCOME (LOSS) net of tax:
Unrealized gain (loss) on available for sale securities	774			—			—			—			774
Reclassification adjustments for losses included in net income(A)	605			—			—			—			605
Other comprehensive income	1,379			—			—			—			1,379
COMPREHENSIVE INCOME (LOSS)	$	12,506		$	(2,460	)	$	38,473		$	(36,013	)	$	12,506
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
THREE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(57,902	)	$	(2,282	)	$	57,186		$	29,802		$	26,804
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(1,307		)	(27		)	(1,355		)	—			(2,689		)
Proceeds from sales and maturities of short term investments	—			27			—			—			27
Capital expenditures	(711		)	(17,201		)	(14,814		)	—			(32,726		)
Other	(13		)	—			(35		)	—			(48		)
Investments in consolidated subsidiaries	29,802			—			—			(29,802		)	—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	27,771			(17,201		)	(16,204		)	(29,802		)	(35,436		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	—			(665		)	(1,159		)	—			(1,824		)
Payments on gold production royalty	—			—			(12,619		)	—			(12,619		)
Share repurchases	(14,995		)	—			—			—			(14,995		)
Net intercompany borrowings (lending)	(9,917		)	19,824			(9,907		)	—			—
Other	(27		)	—			—			—			(27		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(24,939		)	19,159			(23,685		)	—			(29,465		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(55,070		)	(324		)	17,297			—			(38,097		)
Cash and cash equivalents at beginning of period	186,881			723			61,927			—			249,531
Cash and cash equivalents at end of period	$	131,811		$	399		$	79,224		$	—		$	211,434
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
THREE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(6,929	)	$	11,912		$	75,567		$	(815	)	$	79,735
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(4,071		)	(22		)	—			—			(4,093		)
Proceeds from sales and maturities of short term investments	255			22			60			—			337
Capital expenditures	(428		)	(13,811		)	(15,733		)	—			(29,972		)
Other	524			—			(45		)	—			479
Investments in consolidated subsidiaries	(815		)	—			—			815			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(4,535		)	(13,811		)	(15,718		)	815			(33,249		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	(3,721		)	(73,082		)	(3,515		)	—			(80,318		)
Payments on gold production royalty	—			—			(17,458		)	—			(17,458		)
Reductions of (additions to) restricted assets associated with the Kensington Term Facility	—			4,645			—			—			4,645
Share repurchases	(9,971		)	—			—			—			(9,971		)
Net intercompany borrowings (lending)	(18,609		)	70,142			(51,533		)	—			—
Other	134			—			—			—			134
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(32,167		)	1,705			(72,506		)	—			(102,968		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(43,631		)	(194		)	(12,657		)	—			(56,482		)
Cash and cash equivalents at beginning of period	124,906			537			73,954			—			199,397
Cash and cash equivalents at end of period	$	81,275		$	343		$	61,297		$	—		$	142,915
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2013
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	(39,646	)	$	18,374		$	128,531		$	(4,183	)	$	103,076
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(2,906		)	(65		)	(5,051		)	—			(8,022		)
Proceeds from sales and maturities of short term investments	2,874			65			3,432			—			6,371
Capital expenditures	(1,268		)	(37,831		)	(33,655		)	—			(72,754		)
Acquisition of Orko Silver Corporation	(113,214		)	—			—			—			(113,214		)
Other	(19		)	443			739			—			1,163
Investments in consolidated subsidiaries	(7,671		)	—			3,488			4,183			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(122,204		)	(37,388		)	(31,047		)	4,183			(186,456		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of notes and bank borrowings	300,000			—			—			—			300,000
Payments on long-term debt, capital leases, and associated costs	(52,565		)	(2,621		)	(3,835		)	—			(59,021		)
Payments on gold production royalty	—			—			(43,548		)	—			(43,548		)
Share repurchases	(27,552		)	—			—			—			(27,552		)
Net intercompany borrowings (lending)	(12,505		)	21,634			(9,129		)	—			—
Other	(505		)	—			—			—			(505		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	206,873			19,013			(56,512		)	—			169,374
NET CHANGE IN CASH AND CASH EQUIVALENTS	45,023			(1		)	40,972			—			85,994
Cash and cash equivalents at beginning of period	86,788			400			38,252			—			125,440
Cash and cash equivalents at end of period	$	131,811		$	399		$	79,224		$	—		$	211,434
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
NINE MONTHS ENDED SEPTEMBER 30, 2012
	Coeur Mining, Inc.			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Cash provided by operating activities	$	24,589		$	2,696		$	229,932		$	(47,276	)	$	209,941
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of short term investments and marketable securities	(11,914		)	(45		)	—			—			(11,959		)
Proceeds from sales and maturities of short term investments	20,933			45			60			—			21,038
Capital expenditures	(987		)	(39,598		)	(53,272		)	—			(93,857		)
Other	2,191			1			(533		)	—			1,659
Investments in consolidated subsidiaries	(47,276		)	—			—			47,276			—
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(37,053		)	(39,597		)	(53,745		)	47,276			(83,119		)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on long-term debt, capital leases, and associated costs	(4,004		)	(79,151		)	(11,407		)	—			(94,562		)
Payments on gold production royalty	—			—			(58,119		)	—			(58,119		)
Reductions of (additions to) restricted assets associated with the Kensington Term Facility	—			4,645			—			—			4,645
Share repurchases	(9,971		)	—			—			—			(9,971		)
Net intercompany borrowings (lending)	22,954			111,317			(134,271		)	—			—
Other	(912		)	—			—			—			(912		)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	8,067			36,811			(203,797		)	—			(158,919		)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(4,397		)	(90		)	(27,610		)	—			(32,097		)
Cash and cash equivalents at beginning of period	85,672			433			88,907			—			175,012
Cash and cash equivalents at end of period	$	81,275		$	343		$	61,297		$	—		$	142,915

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012
					Stock Options [Member]	Stock Options [Member]	Stock Options [Member]	Stock Options [Member]	Convertible Senior Notes Due March 2028 [Member]	Convertible Senior Notes Due March 2028 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'	'	'	'	'	'	'
Weighted Average Number of Shares Outstanding, Basic	100,778,000	89,429,000	96,893,000	89,550,000	'	'	'	'	'	'
Earnings Per Share (Textual) [Abstract]	'	'	'	'	'	'	'	'	'	'
Number of shares of common stock equivalents related to convertible debt	'	772,368	1,142,530	640,660	1,202,100	632,213	1,202,100	632,213	'	'
Debt Instrument, Interest Rate, Stated Percentage	'	'	'	'	'	'	'	'	3.25%	3.25%
Earnings Per Share, Diluted	($0.46)	($0.18)	($0.71)	$0.12	'	'	'	'	'	'
Incremental Common Shares Attributable to Share-based Payment Arrangements	0	'	0	140,000	'	'	'	'	'	'
Basic EPS	'	'	'	'	'	'	'	'	'	'
Net loss available to common stockholders	($46,265)	($15,821)	($69,035)	$11,127	'	'	'	'	'	'
Net Income available to common stockholders, Per-Share	($0.46)	($0.18)	($0.71)	$0.12	'	'	'	'	'	'
Diluted EPS	'	'	'	'	'	'	'	'	'	'
Net loss available to common stockholders	($46,265)	($15,821)	($69,035)	$11,127	'	'	'	'	'	'
Net Income available to common stockholders, Per-Share	100,778,000	89,429,000	96,893,000	89,690,000	'	'	'	'	'	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Jan. 29, 2013

In Thousands, unless otherwise specified

Silver ounces received from Mandalay [Member]

Royalty obligation embedded derivative [Member]

Royalty obligation embedded derivative [Member]

Put and call options [Member]

Rochester NSR royalty obligation [Member]

Other derivative instrument [Member]

Short-term Deposit [Member]

Marketable securities [Member]

Marketable securities [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

7.875% Senior Notes due 2021 [Member]

Silver ounces received from Mandalay [Member]

Royalty obligation embedded derivative [Member]

Royalty obligation embedded derivative [Member]

Put and call options [Member]

Rochester NSR royalty obligation [Member]

Other derivative instrument [Member]

Short-term Deposit [Member]

Marketable securities [Member]

Marketable securities [Member]

Silver ounces received from Mandalay [Member]

Royalty obligation embedded derivative [Member]

Royalty obligation embedded derivative [Member]

Put and call options [Member]

Rochester NSR royalty obligation [Member]

Other derivative instrument [Member]

Short-term Deposit [Member]

Marketable securities [Member]

Marketable securities [Member]

Silver ounces received from Mandalay [Member]

Royalty obligation embedded derivative [Member]

Royalty obligation embedded derivative [Member]

Put and call options [Member]

Rochester NSR royalty obligation [Member]

Other derivative instrument [Member]

Short-term Deposit [Member]

Marketable securities [Member]

Marketable securities [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected Royalty Duration, Rochester

'4 years 8 months 5 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Short-term Deposits

'

'

'

'

'

'

'

'

$999

'

'

'

'

'

'

'

'

'

'

$999

'

'

'

'

'

'

'

'

'

'

$0

'

'

'

'

'

'

'

'

'

'

$0

'

'

'

'

'

Restricted certificates of deposits

'

'

'

'

'

'

'

'

'

17,616

27,065

'

'

'

'

'

'

'

'

'

'

27,065

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

0

0

'

'

'

Available-for-sale Securities, Equity Securities, Noncurrent

'

27,065

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

17,616

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Asset, Fair Value

160

'

943

'

'

'

'

'

'

'

'

0

'

0

'

'

'

'

'

'

'

'

160

'

943

'

'

'

'

'

'

'

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

Total assets

17,776

29,007

'

'

'

'

'

'

'

'

'

17,616

28,064

'

'

'

'

'

'

'

'

'

160

943

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

Liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative fair value of derivative liability

'

'

'

61,996

145,098

9,299

24,409

2,069

'

'

'

'

'

'

0

0

0

0

0

'

'

'

'

'

'

61,996

145,098

9,299

0

2,069

'

'

'

'

'

'

0

0

0

24,409

0

'

'

'

'

'

'

Total liabilities

$88,474

$154,397

'

'

'

'

'

'

'

'

'

$0

$0

'

'

'

'

'

'

'

'

'

$64,065

$154,397

'

'

'

'

'

'

'

'

'

$24,409

$0

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.25%

3.25%

7.88%

Fair_Value_Measurements_Fair_V

Fair Value Measurements Fair Value Measurements (Details 1) (USD $)

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Jan. 29, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

In Thousands, unless otherwise specified

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

7.875% Senior Notes due 2021 [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Portion at Other than Fair Value, Fair Value Disclosure [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

Convertible Senior Notes Due March 2028 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Inputs, Level 1 [Member]

Fair Value, Inputs, Level 2 [Member]

Fair Value, Inputs, Level 3 [Member]

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Inputs, Liabilities, Quantitative Information [Table Text Block]

'4 years 8 months 5 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Fair Value

'

'

'

'

'

'

'

'

'

'

'

'

$5,131

$48,220

$5,131

$48,220

$0

$0

$0

$0

$304,314

$304,314

$0

$0

Royalty Obligation Fair value

'

'

'

'

$70,795

$90,617

$0

$0

$70,795

$90,617

$0

$0

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

3.25%

3.25%

7.88%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investments_Details

Investments (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]	'	'	'	'	'
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$1,307,000	$6,631,000	$7,477,000	$1,379,000	'
Investment in Marketable Securities (Textual) [Abstract]	'	'	'	'	'
Marketable Securities, Unrealized Gain (Loss)	301,000	6,026,000	-10,756,000	774,000	'
Other than Temporary Impairment Losses, Investments	900,000	'	18,100,000	'	'
Short term investments	0	'	0	'	999,000
Marketable securities [Member]	'	'	'	'	'
Available-for-sale Securities	'	'	'	'	'
Available-for-sale Securities, Amortized Cost	17,860,000	'	17,860,000	'	34,786,000
Available-for-sales Securities, Gross Unrealized Losses	-987,000	'	-987,000	'	-10,443,000
Available-for-sale Securities, Gross Unrealized Gains	743,000	'	743,000	'	2,722,000
Available-for-sale Securities, Estimated Fair Value	$17,616,000	'	$17,616,000	'	$27,065,000

Receivables_Details

Receivables (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts Receivable, Current	$0	'
Accounts Receivable, Net, Noncurrent	37,191,000	48,767,000
Receivables - current portion	'	'
Accounts Receivable - Trade	16,295,000	8,701,000
Refundable income tax	8,330,000	9,331,000
Refundable value added tax	46,242,000	40,020,000
Accounts Receivable - Other	3,550,000	4,386,000
Receivables, net current portion	74,417,000	62,438,000
Allowance for doubtful accounts receivable	$0	$0

Metal_and_Other_Inventories_De

Metal and Other Inventories (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Inventories	'	'
Concentrate and dore inventory	$57,519	$91,130
Supplies	66,018	79,540
Metal and other inventory	$123,537	$170,670

Acquisition_of_Orko_Silver_Cor2

Acquisition of Orko Silver Corporation/La Preciosa Mineral Interests (Details) (Orko Silver Corporation [Member], USD $)	0 Months Ended
In Thousands, except Share data, unless otherwise specified	Apr. 16, 2013
Orko Silver Corporation [Member]	'
Business Combination, Consideration Transferred [Abstract]	'
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
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]	'
Cash	3,487
Other current assets	635
Mineral interests	408,352
Other assets	322
Total assets acquired	$412,796
Common shares issued for acquisition	11,572,918
Common shares issued, price per share	$14.98
Number of warrants issued	1,588,768
Warrants, price per warrant	$3.64

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, plant and equipment	'	'
Land	$1,764	$2,152
Building improvements	596,655	581,286
Machinery and equipment	390,069	360,199
Capitalized leases for machinery, equipment and buildings	22,444	35,129
Property, plant and equipment, gross	1,010,932	978,766
Accumulated depreciation and amortization	-373,931	-313,067
Property Plant and Equipment Net before Construction in Progress	637,001	665,699
Construction in Progress	12,590	18,303
Property, plant and equipment, net	$649,591	$684,002

Mining_Properties_Details

Mining Properties (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Mining Properties	'	'
Operational mining properties:	$735,233	$674,636
Accumulated depletion	-293,971	-247,562
Operational mining properties, net	441,262	427,074
Mineral interest	2,233,037	1,822,493
Accumulated depletion	-308,300	-257,758
Mineral interest, net	1,924,737	1,564,735
Total mining properties	2,365,999	1,991,809
Palmarejo [Member]	'	'
Mining Properties	'	'
Operational mining properties:	170,789	155,722
Accumulated depletion	-101,687	-82,037
Operational mining properties, net	69,102	73,685
Mineral interest	1,660,580	1,658,389
Accumulated depletion	-282,339	-235,795
Mineral interest, net	1,378,241	1,422,594
Total mining properties	1,447,343	1,496,279
San Bartolome [Member]	'	'
Mining Properties	'	'
Operational mining properties:	70,371	70,322
Accumulated depletion	-21,270	-18,439
Operational mining properties, net	49,101	51,883
Mineral interest	26,643	26,642
Accumulated depletion	-8,398	-7,338
Mineral interest, net	18,245	19,304
Total mining properties	67,346	71,187
Kensington [Member]	'	'
Mining Properties	'	'
Operational mining properties:	345,447	333,619
Accumulated depletion	-68,909	-46,649
Operational mining properties, net	276,538	286,970
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	276,538	286,970
Rochester [Member]	'	'
Mining Properties	'	'
Operational mining properties:	148,626	114,973
Accumulated depletion	-102,105	-100,437
Operational mining properties, net	46,521	14,536
Mineral interest	0	0
Accumulated depletion	0	0
Mineral interest, net	0	0
Total mining properties	46,521	14,536
Martha [Member]	'	'
Mining Properties	'	'
Operational mining properties:	0	'
Accumulated depletion	0	'
Operational mining properties, net	0	'
Mineral interest	44,033	'
Accumulated depletion	-17,563	'
Mineral interest, net	26,470	'
Total mining properties	26,470	'
Endeavor [Member]	'	'
Mining Properties	'	'
Operational mining properties:	0	0
Accumulated depletion	0	0
Operational mining properties, net	0	0
Mineral interest	408,352	44,033
Accumulated depletion	0	-14,625
Mineral interest, net	408,352	29,408
Total mining properties	408,352	29,408
Joaquin [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

Mining_Properties_Details_Text

Mining Properties (Details Textual) (USD $)	1 Months Ended	3 Months Ended		4 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2006	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2008	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	23-May-05
	oz			oz				Endeavor [Member]
								oz
Property, Plant and Equipment (Textual) [Abstract]	'	'	'	'	'	'	'	'
Impairment of Long-Lived Assets Held-for-use	'	$0	$1,293	'	$205	$6,106	'	'
Assets	'	$3,636,917	'	'	$3,636,917	'	$3,221,401	'
Quantity of acquired silver production and reserves	'	'	'	'	'	'	'	17,700,000
Mining Properties (Textual) [Abstract]	'	'	'	'	'	'	'	'
Cumulative ounces of silver received by CDE Australia	'	'	'	4,700,000	'	'	'	'
Current ore reserve payable ounces based on current metallurgical recovery and current smelter contract terms	'	'	'	4,000,000	'	'	'	'
Silver production and reserves payable ounces	20,000,000	'	'	'	'	'	'	'

Debt_and_Capital_Lease_Obligat2

Debt and Capital Lease Obligations (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Debt Instrument [Line Items]	'	'	'	'	'
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	'	'	0.50%	'	'
Long term debt and capital lease obligations	'	'	'	'	'
Debt, Current	$3,868	'	$3,868	'	$55,983
Long-term debt and capital leases	306,372	'	306,372	'	3,460
Interest expenses incurred for various debt instruments	'	'	'	'	'
Accretion of Franco Nevada royalty obligation	4,023	4,384	12,192	15,047	'
Amortization of debt issuance costs	540	1,331	1,604	1,838	'
Accretion of debt discount	0	639	576	1,879	'
Capitalized interest	-1,133	-512	-1,494	-2,206	'
Total interest expense, net of capitalized interest	9,662	7,351	30,324	21,578	'
3.25% Convertible Senior Notes due March 2028 [Member]	'	'	'	'	'
Long term debt and capital lease obligations	'	'	'	'	'
Debt, Current	0	'	0	'	48,081
Long-term debt and capital leases	5,334	'	5,334	'	0
Interest expenses incurred for various debt instruments	'	'	'	'	'
Convertible debt, interest expense	43	395	423	1,186	'
7.875% Senior Notes due 2021 [Member]	'	'	'	'	'
Long term debt and capital lease obligations	'	'	'	'	'
Debt, Current	0	'	0	'	0
Long-term debt and capital leases	300,000	'	300,000	'	0
Interest expenses incurred for various debt instruments	'	'	'	'	'
Interest Expense	5,906	0	15,947	0	'
Revolving Credit Facility [Member]	'	'	'	'	'
Interest expenses incurred for various debt instruments	'	'	'	'	'
Interest Expense	176	85	434	85	'
Kensington Term Facility [Member]	'	'	'	'	'
Interest expenses incurred for various debt instruments	'	'	'	'	'
Interest Expense	0	459	0	2,339	'
Capital Lease Obligations [Member]	'	'	'	'	'
Long term debt and capital lease obligations	'	'	'	'	'
Debt, Current	3,868	'	3,868	'	7,902
Long-term debt and capital leases	1,038	'	1,038	'	3,460
Interest expenses incurred for various debt instruments	'	'	'	'	'
Interest Expense	89	219	355	827	'
Other debt obligations [Member]	'	'	'	'	'
Interest expenses incurred for various debt instruments	'	'	'	'	'
Interest Expense	$18	$351	$287	$583	'

Debt_and_Capital_Lease_Obligat3

Debt and Capital Lease Obligations (Details Textual) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Feb. 12, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jan. 29, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Call Option [Member]

Call Option [Member]

Put Option [Member]

Put Option [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]

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]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

7.875% Senior Notes due 2021 [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Kensington Term Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

oz

oz

oz

oz

Debt and capital lease obligations (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate on notes

'

'

'

'

'

'

'

'

'

3.25%

'

3.25%

'

'

3.25%

'

'

'

'

7.88%

'

'

'

'

'

'

'

'

'

Principal amount of bank loan

'

'

'

'

'

'

'

'

'

$5,300,000

'

$5,300,000

'

$48,700,000

'

'

'

'

'

$300,000,000

'

'

'

'

'

'

'

'

'

Debt Instrument, Repurchased Face Amount

'

'

'

'

'

'

'

'

'

43,300,000

'

43,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt, Current

3,868,000

'

3,868,000

'

55,983,000

'

'

'

'

0

'

0

'

'

48,081,000

0

'

0

'

'

0

'

'

'

'

'

'

'

'

Carrying value of the equity component

'

'

'

'

'

'

'

'

'

10,900,000

'

10,900,000

'

'

10,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

43,000

395,000

423,000

1,186,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Expense, Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,906,000

0

15,947,000

0

'

'

0

459,000

0

2,339,000

176,000

85,000

434,000

85,000

Accretion of Debt Discount

0

639,000

576,000

1,879,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accretion expense

2,889,000

4,276,000

10,698,000

14,348,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt and capital leases

306,372,000

'

306,372,000

'

3,460,000

'

'

'

'

5,334,000

'

5,334,000

'

'

0

300,000,000

'

300,000,000

'

'

0

'

'

'

'

'

'

'

'

Borrowing under term facility

100,000,000

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Increase, Additional Borrowings

'

'

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Commitment Fee Percentage

'

'

0.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Amount Outstanding

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gold under collars protection

'

'

'

'

'

12,500

97,000

25,000

122,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average call feature of each collar

'

'

'

'

1,967.89

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average put feature of each collar

'

'

'

'

967.86

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expensed Interest

9,662,000

7,351,000

30,324,000

21,578,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Capitalized interest

$1,133,000

$512,000

$1,494,000

$2,206,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reclamation_and_Mine_Closure_D

Reclamation and Mine Closure (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Entity Information [Line Items]	'	'	'	'	'
Addition and changes in estimates	$19,542,000	$0	$19,542,000	$335,000	'
Asset retirement obligation - Beginning	35,578,000	34,510,000	34,456,000	32,714,000	'
Accretion	777,000	714,000	2,277,000	2,180,000	'
Settlements	-124,000	-13,000	-502,000	-18,000	'
Asset retirement obligation - March 31	55,773,000	35,211,000	55,773,000	35,211,000	'
Reclamation and Mine Closure (Textual) [Abstract]	'	'	'	'	'
Accrued reclamation liabilities	600,000	'	600,000	'	900,000
Rochester [Member]	'	'	'	'	'
Entity Information [Line Items]	'	'	'	'	'
Addition and changes in estimates	16,800,000	'	'	'	'
Kensington [Member]	'	'	'	'	'
Entity Information [Line Items]	'	'	'	'	'
Addition and changes in estimates	$2,700,000	'	'	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Examination [Line Items]	'	'	'	'
Mexico Net Loss Carryforwards	'10 years	'	'10 years	'
Income tax provision from continuing operations	'	'	'	'
Income tax benefit (provision) from continuing operations	$1,981	($17,475)	($31,673)	($56,773)
Income Taxes (Textual) [Abstract]	'	'	'	'
Income tax benefit (Provision)	1,981	-17,475	-31,673	-56,773
United States - Foreign Withholding [Member]	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Federal tax expense (benefit)	5,182	-465	1,905	-3,990
ARGENTINA	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Foreign tax expense (benefit)	1,886	5,409	-17,585	-10,341
AUSTRALIA	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Foreign tax expense (benefit)	-4,598	-23,106	-13,482	-41,684
MEXICO	'	'	'	'
Income Taxes (Textual) [Abstract]	'	'	'	'
Net operating loss carryforward period	'10 years	'	'	'
BOLIVIA	'	'	'	'
Income tax provision from continuing operations	'	'	'	'
Foreign tax expense (benefit)	($489)	$687	($2,511)	($758)

ShareBased_Compensation_Plans_1

Share-Based Compensation Plans (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Issuance of new grants	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	'1 year 8 months 12 days	'	'	'
Share-Based Compensation Plans (Textual) [Abstract]	'	'	'	'
Allocated Share-based Compensation Expense	$0.20	$3.40	$2.30	$6.10
Total unrecognized compensation cost	$7.40	'	$7.40	'
Expected period to recognized, in years	'1 year 10 months 24 days	'	'	'
Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Number of Units	'	'	926	'
Weighted Average Exercise Price	'	'	$20.80	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]	'	'	'252713	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	$33.07	'	$33.07	'
SARs [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Weighted average fair value	$3.09	'	$3.09	'
Number of Units	'	'	3,846	'
Weighted Average Exercise Price	'	'	$15.40	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]	'	'	'65019	'
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Remaining Contractual Term	$14.21	'	$14.21	'
2-Jan-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	2-Jan-13	'
January 2, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	1,805	'
Granted date fair value of Restricted and Performance shares	'	'	$25.20	'
January 2, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	0	'
Grant date fair value of stock options	'	'	$0	'
January 2, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	0	'
Granted date fair value of Restricted and Performance shares	'	'	$0	'
22-Jan-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	22-Jan-13	'
January 22, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	47,994	'
Granted date fair value of Restricted and Performance shares	'	'	$23.90	'
January 22, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	77,715	'
Grant date fair value of stock options	'	'	$14.77	'
January 22, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	95,991	'
Granted date fair value of Restricted and Performance shares	'	'	$27.41	'
4-Feb-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	4-Feb-13	'
February 4, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	18,668	'
Granted date fair value of Restricted and Performance shares	'	'	$22.63	'
February 4, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	17,692	'
Grant date fair value of stock options	'	'	$14	'
February 4, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	21,828	'
Granted date fair value of Restricted and Performance shares	'	'	$25.96	'
1-Apr-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	1-Apr-13	'
April 1, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	157,142	'
Granted date fair value of Restricted and Performance shares	'	'	$18.51	'
April 1, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	73,290	'
Grant date fair value of stock options	'	'	$11.39	'
April 1, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	28,662	'
Granted date fair value of Restricted and Performance shares	'	'	$21.23	'
21-May-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	21-May-13	'
May 21, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	111,193	'
Granted date fair value of Restricted and Performance shares	'	'	$13.66	'
May 21, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	0	'
Grant date fair value of stock options	'	'	$0	'
May 21, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	0	'
Granted date fair value of Restricted and Performance shares	'	'	$0	'
22-Jul-13	'	'	'	'
Issuance of new grants	'	'	'	'
Grant Date	'	'	1-Jul-13	'
July 22, 2013 | Restricted Stock [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	69,774	'
Granted date fair value of Restricted and Performance shares	'	'	$12.72	'
July 22, 2013 | Employee Stock Option [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Stock options	'	'	16,157	'
Grant date fair value of stock options	'	'	$7.93	'
July 22, 2013 | Performance Shares [Member]	'	'	'	'
Issuance of new grants	'	'	'	'
Restricted and Performance shares	'	'	20,451	'
Granted date fair value of Restricted and Performance shares	'	'	$14.59	'

Defined_Contribution_and_401k_

Defined Contribution and 401(k) (Details) (Retirement Savings Plan under Section 401 (k) [Member], USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012
Retirement Savings Plan under Section 401 (k) [Member]	'	'	'	'
Additional Defined Contribution And 401(k) (Textual) [Abstract]	'	'	'	'
Percentage of maximum limit for employees to contribute their cash compensation	75.00%	'	'	'
Percentage of employers matching contribution	100.00%	'	'	'
Percentage of employee contribution	3.00%	'	'	'
Percentage of employee compensation plus matching contribution	50.00%	'	'	'
Percentage of additional employee contribution	2.00%	'	'	'
Total plan expenses	$1.10	$1	$3.20	$3.10

Derivative_Financial_Instrumen2

Derivative Financial Instruments and Fair Value of Financial Instruments (Details)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2012

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Dec. 31, 2012

USD ($)

USD ($)

USD ($)

MXN

MXN

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]

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [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]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [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 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]

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]

Silver put options purchased [Member]

Silver put options purchased [Member]

Silver put options purchased [Member]

Silver put options purchased [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [Member]

Foreign Exchange Forward [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 ($)

2013 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

Thereafter [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

Thereafter [Member]

2013 [Member]

2013 [Member]

2014 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [Member]

2013 [Member]

2014 [Member]

Derivative Instruments Settle in Year 2014 Member [Member]

Thereafter [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 ($)

Gold Put Purchase and Call Sold Options Net [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

USD ($)

MXN

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 ($)

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

oz

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Fair Value, Net

'

'

$9,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

($24,000,000)

'

'

'

$0

$211,000

$1,406,000

'

Derivative, Gain (Loss) on Derivative, Net

400,000

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

600,000

1,400,000

3,400,000

'

'

'

'

Derivative Instruments, Loss Recognized in Income

'

'

'

'

'

5,600,000

10,900,000

22,900,000

35,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative instruments Settlement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

'

'

'

'

'

'

8,633,000

24,895,000

24,691,000

19,236,000

'

154,816

'

146,460,000

'

0

'

0

'

0

'

300,000

'

0

'

0

'

0

'

361,500,000

'

0

'

0

2,326,000

0

0

0

30,123,000

0

0

0

-382,000

0

0

0

-186,000

0

0

0

'

'

'

'

'

'

'

'

Derivative average gold price in excess of minimum contractual Deduction Rate

400

400

'

'

'

'

'

'

'

502,000

498,000

494,000

490,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional ounces

'

'

'

'

'

'

'

'

'

17,201

50,004

50,004

39,285

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

101,908

0

0

0

26,265

0

0

0

25,000

0

0

0

1,250,000

0

0

0

'

'

'

'

'

'

'

'

Fair value of foreign exchange contracts

1,300,000

1,300,000

'

'

'

'

'

'

'

'

'

'

'

12,000,000

'

12,000,000

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Average rate

'

'

'

'

13.11

'

'

'

'

'

'

'

'

'

12.9

'

12.2

'

0

'

0

'

0

'

12.5

'

0

'

0

'

0

'

15,060

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional amount of foreign currency derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

24,000,000

'

0

'

0

'

0

'

24,000,000

'

0

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,000,000

'

'

'

26,100,000

'

'

'

Derivative average price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

22.82

0

0

0

1,147

0

0

0

1,200

0

0

0

0

0

0

0

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) Recognized in Income, Net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

400,000

700,000

1,500,000

'

'

'

'

Weighted Average Put Feature of Each Collar

'

'

$967.86

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Strike Price of Call Options Written

'

'

'

15.06

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative_Financial_Instrumen3

Derivative Financial Instruments and Fair Value of Financial Instruments (Details 1) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	$9,300
Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	211	1,406
Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-2,121	-2,488
Other long-term liabilities [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	-7,274
Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-22,590	-41,146
Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-39,406	-103,952
Forward foreign exchange contracts MXN peso [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	9	376
Forward foreign exchange contracts MXN peso [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-1,355	-300
Forward foreign exchange contracts MXN peso [Member] | Other long-term liabilities [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Forward foreign exchange contracts MXN peso [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Forward foreign exchange contracts MXN peso [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Palmarejo gold production royalty [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Palmarejo gold production royalty [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Palmarejo gold production royalty [Member] | Other long-term liabilities [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Palmarejo gold production royalty [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-22,590	-41,146
Palmarejo gold production royalty [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-39,406	-103,952
Put and call options, net [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Fair Value, Asian Put Options	160	'
Put and call options, net [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	-2,025
Put and call options, net [Member] | Other long-term liabilities [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	-7,274
Put and call options, net [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Put and call options, net [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Concentrate sales contracts [Member] | Prepaid expenses and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	42	1,030
Concentrate sales contracts [Member] | Accrued liabilities and other [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	-766	-163
Concentrate sales contracts [Member] | Other long-term liabilities [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Concentrate sales contracts [Member] | Current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'
Concentrate sales contracts [Member] | Non-current portion of royalty obligation [Member]	'	'
Fair value of the derivative instruments	'	'
Derivative, Fair Value, Net	'	'

Derivative_Financial_Instrumen4

Derivative Financial Instruments and Fair Value of Financial Instruments (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	($20,646)	($37,648)	$63,905	($44,722)
Fair value adjustments, net	-17,664	-35,663	64,963	-44,212
Concentrate Sales Contracts [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Sales of Metals	718	1,591	-2,037	2,050
Forward foreign exchange contract [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Production costs applicable to sales	-99	394	732	-1,540
Forward foreign exchange contracts MXN peso [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	100	621	'	'
Gold Lease Facility [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	'	'	-1,422	3,394
Silver Ounces Receivables [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	0	280	0	302
Palmarejo gold production royalty [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	-15,279	-34,266	60,216	-45,771
Put and call options [Member]	'	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'	'
Fair value adjustments, net	($3,104)	($4,283)	$7,474	($2,647)

Derivative_Financial_Instrumen5

Derivative Financial Instruments and Fair Value of Financial Instruments (Details Textual)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Jan. 21, 2009

Sep. 30, 2013

Sep. 30, 2012

Mar. 31, 2012

Sep. 30, 2012

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

USD ($)

USD ($)

USD ($)

MXN

MXN

oz

Call Option [Member]

Call Option [Member]

Put Option [Member]

Put Option [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Franco-Nevada warrant [Member]

Gold Put Options Sold [Member]

Gold call options sold [Member]

Palmarejo gold production royalty [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]

Silver [Member]

Silver [Member]

Commodity [Member]

Commodity [Member]

Commodity [Member]

Commodity [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 Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [Member]

Derivative Instruments Settle Thereafter [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]

Maximum [Member]

Mexican Peso To United States Dollar [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]

oz

oz

oz

oz

oz

oz

oz

USD ($)

USD ($)

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]

Cerro Bayo Mine [Member]

Cerro Bayo Mine [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Gold put options purchased [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Silver put options purchased [Member]

Gold put options purchased [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Silver put options purchased [Member]

Gold put options purchased [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Silver put options purchased [Member]

Gold put options purchased [Member]

Mexican peso forward purchase contracts [Member]

Mexican peso forward purchase contracts [Member]

Silver put options purchased [Member]

Palmarejo gold production royalty [Member]

MXN

USD ($)

USD ($)

Palmarejo gold production royalty [Member]

Palmarejo gold production royalty [Member]

Gold Put Purchase and Call Sold Options Net [Member]

Gold Put Purchase and Call Sold Options Net [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

MXN

USD ($)

USD ($)

USD ($)

MXN

USD ($)

oz

USD ($)

USD ($)

USD ($)

USD ($)

oz

oz

oz

oz

oz

oz

oz

oz

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Notional Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0

'

146,460,000

$0

$0

'

0

$0

$0

'

0

$0

($382,000)

'

154,816

($186,000)

'

'

'

'

'

'

'

'

Life of Mine Production, Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payment made for gold on the end of royalty obligation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,167

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of Gold Production

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Average Gold Price in Excess of Minimum Contractual Deduction Rate

400

400

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual Inflation Compounding Adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Royalty Guarantees, Commitments, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

400,000

'

'

'

'

'

'

'

Total gold remain outstanding

156,493,000

156,493,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

156,493,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Assumptions, Risk Free Interest Rate

6.26%

'

4.20%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Average Forward Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,337

1,694

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value liability of the embedded derivative

'

'

'

'

'

'

'

'

'

'

62,000,000

'

62,000,000

'

145,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Company recognized Mark to Market loss

'

'

'

'

'

'

'

'

'

'

9,600,000

23,400,000

83,100,000

10,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Realized losses on settlement of the liabilities

'

'

'

'

'

'

'

'

'

'

5,600,000

10,900,000

22,900,000

35,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted average exchange rate

'

'

'

'

13.11

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12.2

'

'

'

0

'

'

'

0

'

'

'

12.9

'

'

12.55

'

'

'

'

'

'

Derivative, Fair Value, Net

'

'

9,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-24,000,000

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

211,000

1,406,000

'

'

'

'

Weighted Average Strike Price of Put Options

'

'

'

12,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of foreign exchange contracts

1,300,000

1,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,000,000

'

'

'

0

'

'

'

0

'

'

'

12,000,000

'

'

'

'

'

'

'

'

'

'

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

400,000

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

600,000

1,400,000

3,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Mark-to-market Realized gains on forward foreign exchange contract

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

400,000

700,000

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Notional amount of foreign currency derivatives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

24,000,000

'

'

'

26,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Strike Price of Call Options Written

'

'

'

15.06

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gold under collars protection

'

'

'

'

'

'

12,500

97,000

25,000

122,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gold put options settled

97,000

97,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding Call Options of Gold

'

'

'

'

'

84,500

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Average Price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

0

0

'

'

0

0

'

'

0

1,200

'

'

0

'

'

'

'

'

'

'

'

Fair Value, Asian Put Options

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

160,000

'

Unrealized Gain/Loss, Asian Put Options

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Put Feature of Each Collar

'

'

967.86

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Call Feature of Each Collar

'

'

1,967.89

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contract expiration date

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unrealized gain

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

2,400,000

3,600,000

9,300,000

1,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value of the contract

160,000

160,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

33,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative, Nonmonetary Notional Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

0

0

'

'

0

0

'

'

0

25,000

'

'

1,250,000

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding provisionally priced sales consists of silver

100,000

100,000

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding provisionally priced sales consists of Gold

26,265

26,265

11,957

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding provisionally priced sales

$0

$0

$34,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Commitment_and_Contigencies_De

Commitment and Contigencies (Details Textual) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jan. 21, 2009

Sep. 30, 2013

Mar. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Jul. 07, 1995

Sep. 30, 2013

Jul. 07, 1995

Jul. 07, 1995

Sep. 30, 2013

oz

oz

Rochester [Member]

Rochester [Member]

Rochester [Member]

Rochester [Member]

Echo Bay [Member]

Kensington [Member]

Kensington [Member]

Coeur Alaska Inc [Member]

Palmarejo gold production royalty [Member]

m

m

oz

oz

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bolivian Mining Elevation Restriction

4,400

'

4,400

'

'

'

'

'

'

'

'

'

'

'

One-Time Cash Payment for Mining Claim Settlement

'

'

$10,000,000

'

'

'

'

'

'

'

'

'

'

'

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%

'

'

'

Gold price per ounce for maximum royalty range

'

'

'

'

'

23.6

'

'

'

'

475

'

'

'

Royalty expenses

'

'

'

'

'

0

800,000

1,000,000

2,000,000

'

'

'

'

'

Further Payment Made on Number of Additional Ounces of Gold

156,493,000

'

156,493,000

'

'

'

'

'

'

'

'

'

'

156,493,000

NSR royalty percentage

3.40%

'

'

'

'

'

'

'

'

'

'

'

'

'

NSR royalty maximum amount

39,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) Related to Litigation Settlement

0

0

-32,046,000

0

'

'

'

'

'

'

'

'

'

'

Mexican Import Tax Potential Settlement

$1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional Commitment and Contingencies (Textual) [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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

'

'

'

'

'

'

'

'

'

Significant_Customers_Details

Significant Customers (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Auramet [Member] | Kensington [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	$28.50	$32	'	'
Auramet [Member] | Palmarejo San Bartolome [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	'	'	97.4	65.5
Valcambi [Member] | Palmarejo San Bartolome [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	22.5	112.7	61.9	368.9
International Commodities [Member] | Palmarejo [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	41.5	10.8	'	'
International Commodities [Member] | Palmarejo San Bartolome Rochester [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	'	'	82	34.7
Mitsui [Member] | Palmarejo [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	0	0	'	'
TD Bank Group [Member] | Palmarejo [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	28.9	19.4	78.1	44.6
China Gold [Member] | Kensington [Member]	'	'	'	'
Customers total revenue	'	'	'	'
Customers total revenue	$21.30	$9.60	'	'
Sales Revenue, Segment [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Concentration Risk, Percentage	10.00%	10.00%	10.00%	10.00%

Significant_Customers_Details_

Significant Customers (Details Textual)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Significant Customers (Textual) [Abstract]	'	'
Approximate percentage of sales of metals to counterparties companies related to metal sales	83.00%	92.00%
Approximate percentage of sales of silver concentrates to third party smelters related to metal sales	17.00%	8.00%

Segment_Reporting_Details

Segment Reporting (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	$200,825		$230,593		$577,147		$689,563		'
Production costs applicable to sales	-131,728		-124,967		-363,437		-349,344		'
Depreciation, Depletion and Amortization	-60,874		-52,844		-168,963		-166,460		'
Gross profit	8,223		52,782		44,747		173,759		'
Exploration	3,305		6,957		16,920		19,829		'
Loss on impairment	0		1,293		205		6,106		'
Other operating expenses	'		0		1,888		0		'
OPERATING INCOME (LOSS)	-15,277		33,989		-55,330		119,750		'
Interest and Other Income	-1,791		13,269		2,484		15,055		'
Interest Expense	-9,662		-7,351		-30,324		-21,578		'
Fair value adjustments, net	-20,646		-37,648		63,905		-44,722		'
Income tax provision	1,981		-17,475		-31,673		-56,773		'
NET INCOME (LOSS)	-46,265		-15,821		-69,035		11,127		'
Capital expenditures	32,726		29,972		72,754		93,857		'
Assets	3,636,917		'		3,636,917		'		3,221,401
Palmarejo [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	104,524		102,642		248,167		362,729		'
Production costs applicable to sales	-66,839		-48,672		-148,776		-157,070		'
Depreciation, Depletion and Amortization	-33,654		-34,007		-98,161		-114,525		'
Gross profit	4,031		19,963		1,230		91,134		'
Exploration	860		2,288		6,029		5,232		'
Loss on impairment	'		0		0		0		'
Other operating expenses	0		0		0		0		'
OPERATING INCOME (LOSS)	3,171		17,675		-4,799		85,902		'
Interest and Other Income	-2,281		4,914		-768		4,774		'
Interest Expense	-2,925		-4,401		-10,853		-14,883		'
Fair value adjustments, net	-15,260		-34,266		60,234		-45,771		'
Income tax provision	1,564		5,495		-17,383		-10,015		'
NET INCOME (LOSS)	-15,731		-10,583		26,431		20,007		'
Capital expenditures	10,290	[1]	11,321	[1]	24,770	[1]	29,665	[1]	'
Assets	1,825,599	[2]	1,926,695	[2]	1,825,599	[2]	1,926,695	[2]	'
San Bartolome [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	28,819		46,192		111,196		140,951		'
Production costs applicable to sales	-17,673		-19,937		-66,165		-56,317		'
Depreciation, Depletion and Amortization	-4,909		-4,163		-14,606		-12,452		'
Gross profit	6,237		22,092		30,425		72,182		'
Exploration	-3		50		76		51		'
Loss on impairment	'		0		0		0		'
Other operating expenses	1,969		50		5,691		80		'
OPERATING INCOME (LOSS)	4,271		21,992		24,658		72,051		'
Interest and Other Income	582		8,353		1,871		9,079		'
Interest Expense	-12		-11		-59		-47		'
Fair value adjustments, net	0		0		0		0		'
Income tax provision	-4,648		-23,106		-13,482		-41,684		'
NET INCOME (LOSS)	193		7,228		12,988		39,399		'
Capital expenditures	4,166	[1]	4,406	[1]	7,782	[1]	22,413	[1]	'
Assets	289,274	[2]	299,041	[2]	289,274	[2]	299,041	[2]	'
Kensington [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	38,927		36,450		109,053		67,950		'
Production costs applicable to sales	-27,484		-26,881		-81,203		-60,078		'
Depreciation, Depletion and Amortization	-18,190		-11,512		-44,837		-27,836		'
Gross profit	-6,747		-1,943		-16,987		-19,964		'
Exploration	1,496		1,476		2,732		1,971		'
Loss on impairment	'		0		0		0		'
Other operating expenses	-6		39		204		75		'
OPERATING INCOME (LOSS)	-8,237		-3,458		-19,923		-22,010		'
Interest and Other Income	0		0		281		1		'
Interest Expense	-51		-1,834		-405		-3,627		'
Fair value adjustments, net	-2,952		-4,283		7,626		-2,647		'
Income tax provision	0		0		-1		0		'
NET INCOME (LOSS)	-11,240		-9,575		-12,422		-28,283		'
Capital expenditures	4,934	[1]	9,034	[1]	15,670	[1]	29,235	[1]	'
Assets	481,613	[2]	520,619	[2]	481,613	[2]	520,619	[2]	'
Rochester [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	24,259		36,244		98,636		89,156		'
Production costs applicable to sales	-17,861		-21,014		-62,418		-51,331		'
Depreciation, Depletion and Amortization	-2,860		-2,061		-7,365		-5,763		'
Gross profit	3,538		13,169		28,853		32,062		'
Exploration	624		1,158		1,621		3,003		'
Loss on impairment	'		0		0		0		'
Other operating expenses	173		1,109		34,494		3,142		'
OPERATING INCOME (LOSS)	2,741		10,902		-7,262		25,917		'
Interest and Other Income	60		59		117		347		'
Interest Expense	-5		-6		-16		-21		'
Fair value adjustments, net	-2,363		0		-2,363		0		'
Income tax provision	0		0		0		0		'
NET INCOME (LOSS)	433		10,955		-9,524		26,243		'
Capital expenditures	12,267	[1]	4,777	[1]	22,161	[1]	10,362	[1]	'
Assets	161,993	[2]	104,066	[2]	161,993	[2]	104,066	[2]	'
Martha [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	0		4,933		-662		12,700		'
Production costs applicable to sales	0		-6,481		0		-17,276		'
Depreciation, Depletion and Amortization	-108		-32		-338		-1,332		'
Gross profit	-108		-1,580		-1,000		-5,908		'
Exploration	282		1,217		4,460		7,391		'
Loss on impairment	'		1,293		205		6,106		'
Other operating expenses	738		133		2,643		411		'
OPERATING INCOME (LOSS)	-1,128		-4,223		-8,308		-19,816		'
Interest and Other Income	-595		-342		166		-912		'
Interest Expense	0		-2		0		-3		'
Fair value adjustments, net	0		0		0		0		'
Income tax provision	5		1,233		-38		993		'
NET INCOME (LOSS)	-1,718		-3,334		-8,180		-19,738		'
Capital expenditures	0	[1]	6	[1]	10	[1]	1,194	[1]	'
Assets	6,146	[2]	11,339	[2]	6,146	[2]	11,339	[2]	'
Endeavor [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	4,296		4,132		10,757		16,077		'
Production costs applicable to sales	-1,871		-1,982		-4,874		-7,272		'
Depreciation, Depletion and Amortization	-894		-898		-2,938		-4,134		'
Gross profit	1,531		1,252		2,945		4,671		'
Exploration	0		0		0		0		'
Loss on impairment	'		0		0		0		'
Other operating expenses	0		0		0		0		'
OPERATING INCOME (LOSS)	1,531		1,252		2,945		4,671		'
Interest and Other Income	0		0		0		0		'
Interest Expense	0		0		0		0		'
Fair value adjustments, net	0		0		0		0		'
Income tax provision	0		-202		0		-202		'
NET INCOME (LOSS)	1,531		1,050		2,945		4,469		'
Capital expenditures	0	[1]	0	[1]	0	[1]	0	[1]	'
Assets	27,938	[2]	32,619	[2]	27,938	[2]	32,619	[2]	'
Joaquin [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	0		0		0		'		'
Production costs applicable to sales	0		0		0		0		'
Depreciation, Depletion and Amortization	-11		0		-12		0		'
Gross profit	-11		0		-12		0		'
Exploration	-671		0		19		0		'
Loss on impairment	'		0		0		0		'
Other operating expenses	1,888		'		'		'		'
OPERATING INCOME (LOSS)	-1,228		0		-1,919		0		'
Interest and Other Income	19		0		8		0		'
Interest Expense	0		0		0		0		'
Fair value adjustments, net	0		0		0		0		'
Income tax provision	0		0		0		0		'
NET INCOME (LOSS)	-1,209		0		-1,911		0		'
Capital expenditures	358	[1]	0	[1]	1,093	[1]	0	[1]	'
Assets	410,085	[2]	0	[2]	410,085	[2]	0	[2]	'
Other Mining Properties [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	0		0		0		0		'
Production costs applicable to sales	0		0		-1		0		'
Depreciation, Depletion and Amortization	-248		-171		-706		-418		'
Gross profit	-248		-171		-707		-418		'
Exploration	717		768		1,983		2,181		'
Loss on impairment	'		0		0		0		'
Other operating expenses	15,433		9,212		38,032		24,366		'
OPERATING INCOME (LOSS)	-16,398		-10,151		-40,722		-26,965		'
Interest and Other Income	-446		-320		-17,288		1,161		'
Interest Expense	-6,669		-1,097		-18,991		-2,997		'
Fair value adjustments, net	-71		901		-1,592		3,696		'
Income tax provision	5,060		-895		-769		-5,865		'
NET INCOME (LOSS)	-18,524		-11,562		-79,362		-30,970		'
Capital expenditures	711	[1]	428	[1]	1,268	[1]	988	[1]	'
Assets	109,520	[2]	18,613	[2]	109,520	[2]	18,613	[2]	'
Reportable Segment [Member]	'		'		'		'		'
Financial information relating to reporting segments	'		'		'		'		'
Sales of metal	200,825		230,593		577,147		689,563		'
Production costs applicable to sales	-131,728		-124,967		-363,437		-349,344		'
Depreciation, Depletion and Amortization	-60,874		-52,844		-168,963		-166,460		'
Gross profit	8,223		52,782		44,747		173,759		'
Exploration	3,305		6,957		16,920		19,829		'
Loss on impairment	'		1,293		205		6,106		'
Other operating expenses	20,195		10,543		82,952		28,074		'
OPERATING INCOME (LOSS)	-15,277		33,989		-55,330		119,750		'
Interest and Other Income	-2,661		12,664		-15,613		14,450		'
Interest Expense	-9,662		-7,351		-30,324		-21,578		'
Fair value adjustments, net	-20,646		-37,648		63,905		-44,722		'
Income tax provision	1,981		-17,475		-31,673		-56,773		'
NET INCOME (LOSS)	-46,265		-15,821		-69,035		11,127		'
Capital expenditures	32,726	[1]	29,972	[1]	72,754	[1]	93,857	[1]	'
Assets	$3,312,168	[2]	$2,912,992	[2]	$3,312,168	[2]	$2,912,992	[2]	'
[1]	Three months ended September 30, 2012PalmarejoMineB San BartolomC)MineB KensingtonMineB RochesterMineB MarthaMineB EndeavorMineB La PreciosaB OtherB TotalSales of metals$102,642B $46,192B $36,450B $36,244B $4,933B $4,132B $bB $bB $230,593Production costs applicable to sales(48,672)B (19,937)B (26,881)B (21,014)B (6,481)B (1,982)B bB bB (124,967)Depreciation and depletion(34,007)B (4,163)B (11,512)B (2,061)B (32)B (898)B bB (171)B (52,844)Gross profit19,963B 22,092B (1,943)B 13,169B (1,580)B 1,252B bB (171)B 52,782Exploration expense2,288B 50B 1,476B 1,158B 1,217B bB bB 768B 6,957Loss on impairmentbB bB bB bB 1,293B bB bB bB 1,293Other operating expensesbB 50B 39B 1,109B 133B bB bB 9,212B 10,543OPERATING INCOME / LOSS17,675B 21,992B (3,458)B 10,902B (4,223)B 1,252B bB (10,151)B 33,989Interest and other income, net4,914B 8,353B bB 59B (342)B bB bB (320)B 12,664Interest expense(4,401)B (11)B (1,834)B (6)B (2)B bB bB (1,097)B (7,351)Fair value adjustments, net(34,266)B bB (4,283)B bB bB bB bB 901B (37,648)Income tax benefit (expense)5,495B (23,106)B bB bB 1,233B (202)B bB (895)B (17,475)Net income (loss)$(10,583)B $7,228B $(9,575)B $10,955B $(3,334)B $1,050B $bB $(11,562)B $(15,821)Segment assets (A)$1,926,695B $299,041B $520,619B $104,066B $11,339B $32,619B $bB $18,613B $2,912,992Capital expenditures (B)$11,321B $4,406B $9,034B $4,777B $6B $bB $bB $428B $29,972
[2]

Segment_Reporting_Details_1

Segment Reporting (Details 1) (USD $)	Sep. 30, 2013		Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012		Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Assets	'		'	'	'		'	'
Cash and cash equivalents	$211,434		$249,531	$125,440	$142,915		$199,397	$175,012
Short term investments	0		'	999	'		'	'
Other assets	113,315		'	120,906	'		'	'
TOTAL ASSETS	3,636,917		'	3,221,401	'		'	'
Reportable Segment [Member]	'		'	'	'		'	'
Assets	'		'	'	'		'	'
Total assets for reportable segments	3,312,168		'	2,974,056	'		'	'
TOTAL ASSETS	$3,312,168	[1]	'	'	$2,912,992	[1]	'	'
[1]

Segment_Reporting_Details_2

Segment Reporting (Details 2) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Long Lived Assets	'	'	'	'	'
Long Lived Assets, Total	$3,015,590	'	$3,015,590	'	$2,675,811
Revenues	'	'	'	'	'
Sales of metal	200,825	230,593	577,147	689,563	'
UNITED STATES	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Entity's Country of Domicile	525,573	'	525,573	'	514,687
Revenues	'	'	'	'	'
Sales of metal	63,186	72,694	207,689	157,106	'
AUSTRALIA	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Individual Foreign Countries	26,469	'	26,469	'	29,408
Revenues	'	'	'	'	'
Sales of metal	4,296	4,132	10,757	16,077	'
ARGENTINA	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Individual Foreign Countries	94,844	'	94,844	'	95,134
Revenues	'	'	'	'	'
Sales of metal	0	4,933	-662	12,700	'
BOLIVIA	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Individual Foreign Countries	235,059	'	235,059	'	240,905
Revenues	'	'	'	'	'
Sales of metal	28,819	46,192	111,196	140,951	'
MEXICO	'	'	'	'	'
Long Lived Assets	'	'	'	'	'
Long Lived Assets in Individual Foreign Countries	2,133,645	'	2,133,645	'	1,795,677
Revenues	'	'	'	'	'
Sales of metal	$104,524	$102,642	$248,167	$362,729	'

Supplemental_Guarantor_Informa2

Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) (USD $)	Sep. 30, 2013	Jan. 29, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash Equivalents, at Carrying Value	$211,434,000	'	$125,440,000
Available-for-sale Securities, Debt Securities, Current	0	'	999,000
Accounts Receivable, Net, Current	74,417,000	'	62,438,000
Ore on Leach Pad, Current	39,880,000	'	22,991,000
Inventory, Net	123,537,000	'	170,670,000
Deferred Tax Assets, Gross, Current	2,713,000	'	2,458,000
Restricted Cash and Cash Equivalents, Current	2,015,000	'	396,000
Other Assets, Current	26,778,000	'	20,790,000
Assets, Current	480,774,000	'	406,182,000
Property, Plant and Equipment, Net	649,591,000	'	684,002,000
Mining Properties	2,365,999,000	'	1,991,809,000
Ore on Leach Pad, Non-Current Portion	31,966,000	'	21,356,000
Restricted Cash and Cash Equivalents, Noncurrent	24,914,000	'	24,970,000
Available-for-sale Securities, Equity Securities, Noncurrent	'	'	27,065,000
Accounts Receivable, Net, Noncurrent	37,191,000	'	48,767,000
Unamortized Debt Issuance Expense	11,351,000	'	3,713,000
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	1,104,000	'	955,000
Other Assets, Noncurrent	16,411,000	'	12,582,000
Assets	3,636,917,000	'	3,221,401,000
Accounts Payable, Current	63,610,000	'	57,482,000
Other Liabilities, Current	9,589,000	'	10,002,000
Accrued Income Taxes, Current	8,529,000	'	27,108,000
Employee-related Liabilities, Current	19,295,000	'	21,306,000
Interest Payable, Current	4,028,000	'	478,000
Debt, Current	3,868,000	'	55,983,000
Current Portion of Royalty Obligation	49,069,000	'	65,104,000
Accrued Reclamation Costs, Current	443,000	'	668,000
Deferred Tax Liabilities, Net, Current	121,000	'	121,000
Liabilities, Current	158,552,000	'	238,252,000
Long-term Debt and Capital Lease Obligations	306,372,000	'	3,460,000
Noncurrent Portion of Royalty Obligation	90,892,000	'	141,879,000
Mine Reclamation and Closing Liability, Noncurrent	55,872,000	'	34,670,000
Deferred Tax Liabilities, Net, Noncurrent	709,910,000	'	577,488,000
Other Liabilities, Noncurrent	23,371,000	'	27,372,000
Intercompany Payable Receivable	0	'	0
Liabilities, Noncurrent	1,186,417,000	'	784,869,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	'	0
Common Stock, Value, Issued	1,006,000	'	903,000
Additional Paid in Capital, Common Stock	2,756,377,000	'	2,601,254,000
Retained Earnings (Accumulated Deficit)	-465,191,000	'	-396,156,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	-244,000	'	-7,721,000
Stockholders' Equity Attributable to Parent	2,291,948,000	'	2,198,280,000
Liabilities and Equity	3,636,917,000	'	3,221,401,000
Coeur Mining, Inc.	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash Equivalents, at Carrying Value	131,811,000	'	86,788,000
Available-for-sale Securities, Debt Securities, Current	0	'	999,000
Accounts Receivable, Net, Current	353,000	'	8,520,000
Ore on Leach Pad, Current	0	'	0
Inventory, Net	0	'	0
Deferred Tax Assets, Gross, Current	0	'	0
Restricted Cash and Cash Equivalents, Current	0	'	0
Other Assets, Current	6,682,000	'	3,395,000
Assets, Current	138,846,000	'	99,702,000
Property, Plant and Equipment, Net	6,085,000	'	4,183,000
Mining Properties	0	'	0
Ore on Leach Pad, Non-Current Portion	0	'	0
Restricted Cash and Cash Equivalents, Noncurrent	18,695,000	'	18,922,000
Available-for-sale Securities, Equity Securities, Noncurrent	17,616,000	'	27,065,000
Accounts Receivable, Net, Noncurrent	0	'	0
Unamortized Debt Issuance Expense	11,351,000	'	3,713,000
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	955,000	'	955,000
Other Assets, Noncurrent	53,194,000	'	39,120,000
Assets	2,098,889,000	'	1,747,094,000
Accounts Payable, Current	5,287,000	'	2,954,000
Other Liabilities, Current	2,335,000	'	1,418,000
Accrued Income Taxes, Current	34,000	'	257,000
Employee-related Liabilities, Current	4,934,000	'	7,477,000
Interest Payable, Current	4,012,000	'	463,000
Debt, Current	0	'	48,081,000
Current Portion of Royalty Obligation	0	'	0
Accrued Reclamation Costs, Current	0	'	0
Deferred Tax Liabilities, Net, Current	0	'	0
Liabilities, Current	16,602,000	'	60,650,000
Long-term Debt and Capital Lease Obligations	305,334,000	'	0
Noncurrent Portion of Royalty Obligation	0	'	0
Mine Reclamation and Closing Liability, Noncurrent	0	'	0
Deferred Tax Liabilities, Net, Noncurrent	113,130,000	'	115,425,000
Other Liabilities, Noncurrent	2,299,000	'	955,000
Intercompany Payable Receivable	-630,424,000	'	-628,216,000
Liabilities, Noncurrent	-209,661,000	'	-511,836,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,852,147,000	'	1,553,434,000
Common Stock, Value, Issued	1,006,000	'	903,000
Additional Paid in Capital, Common Stock	2,756,377,000	'	2,601,254,000
Retained Earnings (Accumulated Deficit)	-465,191,000	'	-396,156,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	-244,000	'	-7,721,000
Stockholders' Equity Attributable to Parent	2,291,948,000	'	2,198,280,000
Liabilities and Equity	2,098,889,000	'	1,747,094,000
Guarantor Subsidiaries	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash Equivalents, at Carrying Value	399,000	'	400,000
Available-for-sale Securities, Debt Securities, Current	0	'	0
Accounts Receivable, Net, Current	16,517,000	'	7,643,000
Ore on Leach Pad, Current	39,880,000	'	22,991,000
Inventory, Net	31,511,000	'	45,906,000
Deferred Tax Assets, Gross, Current	0	'	0
Restricted Cash and Cash Equivalents, Current	0	'	0
Other Assets, Current	6,036,000	'	5,947,000
Assets, Current	94,343,000	'	82,887,000
Property, Plant and Equipment, Net	195,966,000	'	208,857,000
Mining Properties	323,060,000	'	301,506,000
Ore on Leach Pad, Non-Current Portion	31,966,000	'	21,356,000
Restricted Cash and Cash Equivalents, Noncurrent	60,000	'	60,000
Available-for-sale Securities, Equity Securities, Noncurrent	0	'	0
Accounts Receivable, Net, Noncurrent	0	'	0
Unamortized Debt Issuance Expense	0	'	0
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	0	'	0
Other Assets, Noncurrent	12,232,000	'	12,360,000
Assets	657,627,000	'	627,026,000
Accounts Payable, Current	18,755,000	'	17,211,000
Other Liabilities, Current	864,000	'	4,014,000
Accrued Income Taxes, Current	0	'	0
Employee-related Liabilities, Current	6,465,000	'	8,158,000
Interest Payable, Current	4,000	'	5,000
Debt, Current	1,784,000	'	3,013,000
Current Portion of Royalty Obligation	2,428,000	'	0
Accrued Reclamation Costs, Current	0	'	0
Deferred Tax Liabilities, Net, Current	0	'	0
Liabilities, Current	30,300,000	'	32,401,000
Long-term Debt and Capital Lease Obligations	283,000	'	1,675,000
Noncurrent Portion of Royalty Obligation	21,981,000	'	0
Mine Reclamation and Closing Liability, Noncurrent	43,993,000	'	23,149,000
Deferred Tax Liabilities, Net, Noncurrent	0	'	0
Other Liabilities, Noncurrent	329,000	'	8,086,000
Intercompany Payable Receivable	412,112,000	'	390,480,000
Liabilities, Noncurrent	478,698,000	'	423,390,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	0	'	0
Common Stock, Value, Issued	350,000	'	350,000
Additional Paid in Capital, Common Stock	107,734,000	'	107,734,000
Retained Earnings (Accumulated Deficit)	40,545,000	'	63,151,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	'	0
Stockholders' Equity Attributable to Parent	148,629,000	'	171,235,000
Liabilities and Equity	657,627,000	'	627,026,000
Non-Guarantor Subsidiaries	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash Equivalents, at Carrying Value	79,224,000	'	38,252,000
Available-for-sale Securities, Debt Securities, Current	0	'	0
Accounts Receivable, Net, Current	57,547,000	'	46,275,000
Ore on Leach Pad, Current	0	'	0
Inventory, Net	92,026,000	'	124,764,000
Deferred Tax Assets, Gross, Current	2,713,000	'	2,458,000
Restricted Cash and Cash Equivalents, Current	2,015,000	'	396,000
Other Assets, Current	14,060,000	'	11,448,000
Assets, Current	247,585,000	'	223,593,000
Property, Plant and Equipment, Net	447,540,000	'	470,962,000
Mining Properties	2,042,939,000	'	1,690,303,000
Ore on Leach Pad, Non-Current Portion	0	'	0
Restricted Cash and Cash Equivalents, Noncurrent	6,159,000	'	5,988,000
Available-for-sale Securities, Equity Securities, Noncurrent	0	'	0
Accounts Receivable, Net, Noncurrent	37,191,000	'	48,767,000
Unamortized Debt Issuance Expense	0	'	0
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	149,000	'	0
Other Assets, Noncurrent	320,407,000	'	318,330,000
Assets	4,680,769,000	'	4,043,805,000
Accounts Payable, Current	39,568,000	'	37,317,000
Other Liabilities, Current	6,390,000	'	4,570,000
Accrued Income Taxes, Current	8,495,000	'	26,851,000
Employee-related Liabilities, Current	7,896,000	'	5,671,000
Interest Payable, Current	1,050,000	'	1,002,000
Debt, Current	306,734,000	'	309,539,000
Current Portion of Royalty Obligation	46,641,000	'	65,104,000
Accrued Reclamation Costs, Current	947,000	'	1,445,000
Deferred Tax Liabilities, Net, Current	121,000	'	121,000
Liabilities, Current	417,842,000	'	451,620,000
Long-term Debt and Capital Lease Obligations	64,487,000	'	53,367,000
Noncurrent Portion of Royalty Obligation	68,911,000	'	141,879,000
Mine Reclamation and Closing Liability, Noncurrent	11,375,000	'	10,744,000
Deferred Tax Liabilities, Net, Noncurrent	596,780,000	'	462,063,000
Other Liabilities, Noncurrent	20,743,000	'	18,331,000
Intercompany Payable Receivable	218,312,000	'	237,736,000
Liabilities, Noncurrent	980,608,000	'	924,120,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	1,578,799,000	'	1,285,862,000
Common Stock, Value, Issued	122,826,000	'	22,760,000
Additional Paid in Capital, Common Stock	3,235,571,000	'	2,748,173,000
Retained Earnings (Accumulated Deficit)	-76,078,000	'	-102,868,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	'	0
Stockholders' Equity Attributable to Parent	3,282,319,000	'	2,668,065,000
Liabilities and Equity	4,680,769,000	'	4,043,805,000
Eliminations	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Cash Equivalents, at Carrying Value	0	'	0
Available-for-sale Securities, Debt Securities, Current	0	'	0
Accounts Receivable, Net, Current	0	'	0
Ore on Leach Pad, Current	0	'	0
Inventory, Net	0	'	0
Deferred Tax Assets, Gross, Current	0	'	0
Restricted Cash and Cash Equivalents, Current	0	'	0
Other Assets, Current	0	'	0
Assets, Current	0	'	0
Property, Plant and Equipment, Net	0	'	0
Mining Properties	0	'	0
Ore on Leach Pad, Non-Current Portion	0	'	0
Restricted Cash and Cash Equivalents, Noncurrent	0	'	0
Available-for-sale Securities, Equity Securities, Noncurrent	0	'	0
Accounts Receivable, Net, Noncurrent	0	'	0
Unamortized Debt Issuance Expense	0	'	0
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	0	'	0
Other Assets, Noncurrent	-369,422,000	'	-357,228,000
Assets	-3,800,368,000	'	-3,196,524,000
Accounts Payable, Current	0	'	0
Other Liabilities, Current	0	'	0
Accrued Income Taxes, Current	0	'	0
Employee-related Liabilities, Current	0	'	0
Interest Payable, Current	-1,038,000	'	-992,000
Debt, Current	-304,650,000	'	-304,650,000
Current Portion of Royalty Obligation	0	'	0
Accrued Reclamation Costs, Current	-504,000	'	-777,000
Deferred Tax Liabilities, Net, Current	0	'	0
Liabilities, Current	-306,192,000	'	-306,419,000
Long-term Debt and Capital Lease Obligations	-63,732,000	'	-51,582,000
Noncurrent Portion of Royalty Obligation	0	'	0
Mine Reclamation and Closing Liability, Noncurrent	504,000	'	777,000
Deferred Tax Liabilities, Net, Noncurrent	0	'	0
Other Liabilities, Noncurrent	0	'	0
Intercompany Payable Receivable	0	'	0
Liabilities, Noncurrent	-63,228,000	'	-50,805,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	-3,430,946,000	'	-2,839,296,000
Common Stock, Value, Issued	-123,176,000	'	-23,110,000
Additional Paid in Capital, Common Stock	-3,343,305,000	'	-2,855,907,000
Retained Earnings (Accumulated Deficit)	35,533,000	'	39,717,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	'	0
Stockholders' Equity Attributable to Parent	-3,430,948,000	'	-2,839,300,000
Liabilities and Equity	-3,800,368,000	'	-3,196,524,000
Senior Notes due Two Thousand Twenty One [Member]	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'
Debt Instrument, Face Amount	'	300,000,000	'
Debt, Current	0	'	0
Long-term Debt and Capital Lease Obligations	$300,000,000	'	$0
Debt Instrument, Interest Rate, Stated Percentage	'	7.88%	'

Supplemental_Guarantor_Informa3

Supplemental Guarantor Information Condensed Consolidated Statement of Operations (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales Revenue, Goods, Net	$200,825	$230,593	$577,147	$689,563
Cost of Goods Sold	-131,728	-124,967	-363,437	-349,344
Depreciation, Depletion and Amortization	-60,874	-52,844	-168,963	-166,460
Gross Profit	8,223	52,782	44,747	173,759
General and Administrative Expense	16,240	10,266	41,492	26,456
Costs of Metals Sold	3,305	6,957	16,920	19,829
Gain (Loss) Related to Litigation Settlement	0	0	32,046	0
Impairment of Long-Lived Assets Held-for-use	0	1,293	205	6,106
Pre Development	3,955	277	9,414	1,618
Operating Expenses	23,500	18,793	100,077	54,009
Operating Income (Loss)	-15,277	33,989	-55,330	119,750
Gain (Loss) on Derivative Instruments, Net, Pretax	-20,646	-37,648	63,905	-44,722
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	-870	-605	-18,097	-605
Interest and Other Income	-1,791	13,269	2,484	15,055
Interest Expense	-9,662	-7,351	-30,324	-21,578
Nonoperating Income (Expense)	-32,969	-32,335	17,968	-51,850
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-48,246	1,654	-37,362	67,900
Income Tax Expense (Benefit)	1,981	-17,475	-31,673	-56,773
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-46,265	-15,821	-69,035	11,127
Income (Loss) from Equity Method Investments	0	0	0	0
Net Income (Loss) Attributable to Parent	-46,265	-15,821	-69,035	11,127
Coeur Mining, Inc.	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales Revenue, Goods, Net	0	0	0	0
Cost of Goods Sold	0	0	0	0
Depreciation, Depletion and Amortization	-244	-134	-694	-382
Gross Profit	-244	-134	-694	-382
General and Administrative Expense	15,622	9,097	37,975	24,133
Costs of Metals Sold	506	462	1,169	1,279
Gain (Loss) Related to Litigation Settlement	0	'	0	'
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	0	0	0	0
Operating Expenses	16,128	9,559	39,144	25,412
Operating Income (Loss)	-16,372	-9,693	-39,838	-25,794
Gain (Loss) on Derivative Instruments, Net, Pretax	-71	901	-1,593	3,696
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	-870	-605	-18,097	-605
Interest and Other Income	784	1,133	2,991	4,805
Interest Expense	-6,665	-1,097	-18,984	-2,998
Nonoperating Income (Expense)	-6,822	332	-35,683	4,898
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-23,194	-9,361	-75,521	-20,896
Income Tax Expense (Benefit)	5,613	-465	2,303	-3,990
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-17,581	-9,826	-73,218	-24,886
Income (Loss) from Equity Method Investments	-28,684	-5,995	4,183	36,013
Net Income (Loss) Attributable to Parent	-46,265	-15,821	-69,035	11,127
Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales Revenue, Goods, Net	63,187	72,695	207,689	157,106
Cost of Goods Sold	-45,346	-47,896	-143,620	-111,409
Depreciation, Depletion and Amortization	-21,054	-13,609	-52,213	-33,635
Gross Profit	-3,213	11,190	11,856	12,062
General and Administrative Expense	-143	871	1,400	1,637
Costs of Metals Sold	2,305	2,940	5,167	5,880
Gain (Loss) Related to Litigation Settlement	0	'	32,046	'
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	159	277	857	1,580
Operating Expenses	2,321	4,088	39,470	9,097
Operating Income (Loss)	-5,534	7,102	-27,614	2,965
Gain (Loss) on Derivative Instruments, Net, Pretax	-5,315	-4,283	5,263	-2,647
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	87	86	562	870
Interest Expense	-56	-1,840	-421	-3,648
Nonoperating Income (Expense)	-5,284	-6,037	5,404	-5,425
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-10,818	1,065	-22,210	-2,460
Income Tax Expense (Benefit)	-152	0	-397	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-10,970	1,065	-22,607	-2,460
Income (Loss) from Equity Method Investments	0	0	0	'
Net Income (Loss) Attributable to Parent	-10,970	1,065	-22,607	-2,460
Non-Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales Revenue, Goods, Net	137,638	157,898	369,458	532,457
Cost of Goods Sold	-86,382	-77,071	-219,817	-237,935
Depreciation, Depletion and Amortization	-39,576	-39,101	-116,056	-132,443
Gross Profit	11,680	41,726	33,585	162,079
General and Administrative Expense	761	298	2,117	686
Costs of Metals Sold	494	3,555	10,584	12,670
Gain (Loss) Related to Litigation Settlement	0	'	0	'
Impairment of Long-Lived Assets Held-for-use	0	1,293	205	6,106
Pre Development	3,796	0	8,557	38
Operating Expenses	5,051	5,146	21,463	19,500
Operating Income (Loss)	6,629	36,580	12,122	142,579
Gain (Loss) on Derivative Instruments, Net, Pretax	-15,260	-34,266	60,235	-45,771
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	-1,912	13,018	1,404	13,214
Interest Expense	-3,691	-5,382	-13,392	-18,766
Nonoperating Income (Expense)	-20,863	-26,630	48,247	-51,323
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-14,234	9,950	60,369	91,256
Income Tax Expense (Benefit)	-3,480	-17,010	-33,579	-52,783
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	-17,714	-7,060	26,790	38,473
Income (Loss) from Equity Method Investments	0	0	0	'
Net Income (Loss) Attributable to Parent	-17,714	-7,060	26,790	38,473
Eliminations	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Sales Revenue, Goods, Net	0	0	0	0
Cost of Goods Sold	0	0	0	0
Depreciation, Depletion and Amortization	0	0	0	0
Gross Profit	0	0	0	0
General and Administrative Expense	0	0	0	0
Costs of Metals Sold	0	0	0	0
Gain (Loss) Related to Litigation Settlement	0	'	0	'
Impairment of Long-Lived Assets Held-for-use	0	0	0	0
Pre Development	0	0	0	0
Operating Expenses	0	0	0	0
Operating Income (Loss)	0	0	0	0
Gain (Loss) on Derivative Instruments, Net, Pretax	0	0	0	0
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	0	0	0	0
Interest and Other Income	-750	-968	-2,473	-3,834
Interest Expense	750	968	2,473	3,834
Nonoperating Income (Expense)	0	0	0	0
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	0	0	0	0
Income Tax Expense (Benefit)	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Income (Loss) from Equity Method Investments	28,684	5,995	-4,183	-36,013
Net Income (Loss) Attributable to Parent	$28,684	$5,995	($4,183)	($36,013)

Supplemental_Guarantor_Informa4

Supplemental Guarantor Information Condensed Consolidated Statements of Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
NET INCOME (LOSS)	($46,265)	($15,821)	($69,035)	$11,127
Marketable Securities, Unrealized Gain (Loss)	301	6,026	-10,756	774
Reclassification adjustments for losses included in net income	1,006	605	18,233	605
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1,307	6,631	7,477	1,379
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-44,958	-9,190	-61,558	12,506
Coeur Mining, Inc.	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
NET INCOME (LOSS)	-46,265	-15,821	-69,035	11,127
Marketable Securities, Unrealized Gain (Loss)	301	6,026	-10,756	774
Reclassification adjustments for losses included in net income	1,006	605	18,233	605
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1,307	6,631	7,477	1,379
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-44,958	-9,190	-61,558	12,506
Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
NET INCOME (LOSS)	-10,970	1,065	-22,607	-2,460
Marketable Securities, Unrealized Gain (Loss)	0	0	0	0
Reclassification adjustments for losses included in net income	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-10,970	1,065	-22,607	-2,460
Non-Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
NET INCOME (LOSS)	-17,714	-7,060	26,790	38,473
Marketable Securities, Unrealized Gain (Loss)	0	0	0	0
Reclassification adjustments for losses included in net income	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	-17,714	-7,060	26,790	38,473
Eliminations	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
NET INCOME (LOSS)	28,684	5,995	-4,183	-36,013
Marketable Securities, Unrealized Gain (Loss)	0	0	0	0
Reclassification adjustments for losses included in net income	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$28,684	$5,995	($4,183)	($36,013)

Supplemental_Guarantor_Informa5

Supplemental Guarantor Information Condensed Consolidated Statements of Cash Flows (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
					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
Condensed Financial Statements, Captions [Line Items]	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'	'
Net Cash Provided by (Used in) Operating Activities	$26,804	$79,735	$103,076	$209,941	($57,902)	($6,929)	($39,646)	$24,589	($2,282)	$11,912	$18,374	$2,696	$57,186	$75,567	$128,531	$229,932	$29,802	($815)	($4,183)	($47,276)
Payments to Acquire Investments	-2,689	-4,093	-8,022	-11,959	-1,307	-4,071	-2,906	-11,914	-27	-22	-65	-45	-1,355	0	-5,051	0	0	0	0	0
Payments for (Proceeds from) Investments	27	337	6,371	21,038	0	255	2,874	20,933	27	22	65	45	0	60	3,432	60	0	0	0	0
Payments to Acquire Productive Assets	-32,726	-29,972	-72,754	-93,857	-711	-428	-1,268	-987	-17,201	-13,811	-37,831	-39,598	-14,814	-15,733	-33,655	-53,272	0	0	0	0
Payments to Acquire Businesses, Net of Cash Acquired	0	0	-113,214	0	'	'	-113,214	'	'	'	0	'	'	'	0	'	'	'	0	'
Proceeds from Discontinued Operations Sale of Assets and Other	-48	479	1,163	1,659	-13	524	-19	2,191	'	0	443	1	-35	-45	739	-533	0	0	0	0
Payments to Acquire Interest in Subsidiaries and Affiliates	0	0	0	0	29,802	-815	-7,671	-47,276	0	0	0	0	0	0	3,488	0	-29,802	815	4,183	47,276
Net Cash Provided by (Used in) Investing Activities	-35,436	-33,249	-186,456	-83,119	27,771	-4,535	-122,204	-37,053	-17,201	-13,811	-37,388	-39,597	-16,204	-15,718	-31,047	-53,745	-29,802	815	4,183	47,276
Proceeds from Convertible Debt	0	0	300,000	0	'	'	300,000	'	'	'	0	'	'	'	0	'	'	'	0	'
Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities	-1,824	-80,318	-59,021	-94,562	0	-3,721	-52,565	-4,004	-665	-73,082	-2,621	-79,151	-1,159	-3,515	-3,835	-11,407	0	0	0	0
Payments to Acquire Royalty Interests in Mining Properties	-12,619	-17,458	-43,548	-58,119	0	0	0	0	0	0	0	0	-12,619	-17,458	-43,548	-58,119	0	0	0	0
Additions to Restricted Assets	0	-4,645	0	-4,645	'	0	'	0	'	4,645	'	4,645	'	0	'	0	'	0	'	0
Payments for Repurchase of Common Stock	-14,995	-9,971	-27,552	-9,971	-14,995	-9,971	-27,552	-9,971	0	0	0	0	0	0	0	0	0	0	0	0
Proceeds From Repayment Intercompany Borrowings	0	0	0	0	-9,917	-18,609	-12,505	22,954	19,824	70,142	21,634	111,317	-9,907	-51,533	-9,129	-134,271	0	0	0	0
Proceeds from (Payments for) Other Financing Activities	-27	134	-505	-912	-27	134	-505	-912	0	0	0	0	0	0	0	0	0	0	0	0
Net Cash Provided by (Used in) Financing Activities	-29,465	-102,968	169,374	-158,919	-24,939	-32,167	206,873	8,067	19,159	1,705	19,013	36,811	-23,685	-72,506	-56,512	-203,797	0	0	0	0
Cash and Cash Equivalents, Period Increase (Decrease)	-38,097	-56,482	85,994	-32,097	-55,070	-43,631	45,023	-4,397	-324	-194	-1	-90	17,297	-12,657	40,972	-27,610	0	0	0	0
Cash and Cash Equivalents, at Carrying Value	$211,434	$142,915	$211,434	$142,915	$131,811	$81,275	$131,811	$81,275	$399	$343	$399	$343	$79,224	$61,297	$79,224	$61,297	$0	$0	$0	$0