McEwen Mining (MUX) 10-Q6 Aug 142014 Q2 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
Document and Entity Information	Jun. 30, 2014	Aug. 04, 2014
Document and Entity Information	'	'
Entity Registrant Name	'McEwen Mining Inc.	'
Entity Central Index Key	'0000314203	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	267,344,048
Exchangeable Common Stock, Shares Outstanding	'	30,073,043
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUE:	'	'	'	'
Gold and silver sales	$11,637	$10,459	$22,767	$23,957
Total Revenue	11,637	10,459	22,767	23,957
COSTS AND EXPENSES:	'	'	'	'
Production costs applicable to sales	10,900	8,278	19,427	18,871
Mine construction costs	217	'	1,156	'
Mine development costs	155	98	1,723	569
Exploration costs	2,637	4,889	5,317	19,489
Property holding costs	734	316	2,188	1,693
General and administrative	3,213	4,217	6,440	8,409
Depreciation	229	245	454	527
Accretion of asset retirement obligation (note 3)	108	121	209	234
(Income) loss on investment in Minera Santa Cruz S.A., net of amortization (note 4)	2,438	1,551	-4,591	1,788
Impairment of investment in MSC (note 4)	'	95,878	'	95,878
Impairment of mineral property interests and property and equipment (note 3)	120,398	27,729	120,398	27,729
(Gain) loss on sale of assets	-18	6,791	-18	6,791
Total costs and expenses	141,011	150,113	152,703	181,978
Operating loss	-129,374	-139,654	-129,936	-158,021
OTHER INCOME (EXPENSE):	'	'	'	'
Interest income	34	68	109	139
Gain on litigation settlement	'	'	'	560
Unrealized loss on gold and silver bullion	'	-274	'	-274
Foreign currency gain (loss)	284	-1,226	-299	-935
Total other income (expense)	318	-1,432	-190	-510
Loss before income taxes	-129,056	-141,086	-130,126	-158,531
Income tax recovery (note 8)	25,034	12,405	43,991	18,868
Net loss	-104,022	-128,681	-86,135	-139,663
OTHER COMPREHENSIVE INCOME (LOSS):	'	'	'	'
Unrealized gain on available-for-sale securities, net of taxes	2	'	3	'
Comprehensive loss	($104,020)	($128,681)	($86,132)	($139,663)
Net loss per share (note 9):	'	'	'	'
Basic (in dollars per share)	($0.35)	($0.43)	($0.29)	($0.47)
Diluted (in dollars per share)	($0.35)	($0.43)	($0.29)	($0.47)
Weighted average common shares outstanding (thousands) (note 9):	'	'	'	'
Basic (in shares)	297,164	297,097	297,162	296,938
Diluted (in shares)	297,164	297,097	297,162	296,938

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:	'	'
Cash and cash equivalents	$15,149	$24,321
IVA taxes receivable	14,483	11,591
Inventories (note 2)	10,170	8,800
Other current assets	2,279	2,059
Total current assets	42,081	46,771
Mineral property interests (note 3)	521,884	642,968
Restrictive time deposits for reclamation bonding (note 3)	4,817	5,183
Investment in Minera Santa Cruz S.A. (note 4)	210,425	212,947
Property and equipment, net (note 5)	16,972	15,143
Other assets	91	54
TOTAL ASSETS	796,270	923,066
Current liabilities:	'	'
Accounts payable and accrued liabilities	12,238	9,797
Current portion of asset retirement obligation (note 3)	1,455	1,392
Total current liabilities	13,693	11,189
Asset retirement obligation, less current portion (note 3)	5,940	5,855
Deferred income tax liability (note 8)	114,864	158,855
Other liabilities	400	400
Total liabilities	134,897	176,299
Shareholders' equity:	'	'
Common stock, no par value, 500,000 shares authorized; Common: 266,597 as of June 30, 2014 and 264,913 shares as of December 31, 2013 issued and outstanding Exchangeable: 30,623 shares as of June 30, 2014 and 32,246 shares as of December 31, 2013 issued and outstanding	1,355,434	1,354,696
Accumulated deficit	-693,769	-607,634
Accumulated other comprehensive loss	-292	-295
Total shareholders' equity	661,373	746,767
TOTAL LIABILITIES & SHAREHOLDERS' EQUITY	$796,270	$923,066

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
CONSOLIDATED BALANCE SHEETS	'	'
Common stock, par value	$0	$0
Common stock, shares authorized	500,000	500,000
Common, shares issued	266,597	264,913
Common, shares outstanding	266,597	264,913
Exchangeable, shares issued	30,623	32,246
Exchangeable, shares outstanding	30,623	32,246

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)	Common Stock [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Total
In Thousands, except Share data, unless otherwise specified	Common Stock [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2012	$1,349,777	($294)	($459,892)	$889,591
Balance (in shares) at Dec. 31, 2012	296,025,000	'	'	'
Increase (Decrease) in Shareholders' Equity	'	'	'	'
Stock-based compensation	686	'	'	686
Exercise of stock options	95	'	'	95
Exercise of stock options (in shares)	48,000	'	'	'
Shares issued for litigation settlement	3,270	'	'	3,270
Shares issued for litigation settlement (in shares)	1,000,000	'	'	'
Shares issued for Mexico mining concessions	96	'	'	96
Shares issued for Mexico mining concessions (in shares)	41,000	'	'	'
Net loss	'	'	-139,663	-139,663
Balance at Jun. 30, 2013	1,353,924	-294	-599,555	754,075
Balance (in shares) at Jun. 30, 2013	297,114,000	'	'	'
Balance at Dec. 31, 2013	1,354,696	-295	-607,634	746,767
Balance (in shares) at Dec. 31, 2013	297,159,000	'	'	'
Increase (Decrease) in Shareholders' Equity	'	'	'	'
Stock-based compensation	609	'	'	609
Exercise of stock options	129	'	'	129
Exercise of stock options (in shares)	60,000	'	'	60,300
Unrealized gain on available-for-sale securities, net of taxes	'	3	'	3
Net loss	'	'	-86,135	-86,135
Balance at Jun. 30, 2014	$1,355,434	($292)	($693,769)	$661,373
Balance (in shares) at Jun. 30, 2014	297,220,000	'	'	'

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:	'	'
Cash paid to suppliers and employees	($37,085)	($58,521)
Cash received from gold and silver sales	22,767	23,197
Dividends received from Minera Santa Cruz S.A.	7,113	'
Proceeds from sale of gold and silver bullion	'	510
Interest received	109	139
Cash used in operating activities	-7,096	-34,675
Cash flows from investing activities:	'	'
Acquisition of mineral property interests	'	-150
Additions to property and equipment	-2,297	-225
Decrease in restrictive time deposits for reclamation bonding	367	'
Proceeds from disposal of property and equipment	31	'
Cash used in investing activities	-1,899	-375
Cash flows from financing activities:	'	'
Exercise of stock options	129	95
Cash provided by financing activities	129	95
Effect of exchange rate change on cash and cash equivalents	-306	-1,193
Decrease in cash and cash equivalents	-9,172	-36,148
Cash and cash equivalents, beginning of period	24,321	70,921
Cash and cash equivalents, end of period	15,149	34,773
Reconciliation of net loss to cash used in operating activities:	'	'
Net loss	-86,135	-139,663
Adjustments to reconcile net income (loss) from operating activities:	'	'
(Income) loss on investment in Minera Santa Cruz S.A., net of amortization	-4,591	1,788
Impairment of investment in MSC	'	95,878
Impairment of mineral property interests and property and equipment	120,398	27,729
(Gain) loss on sale of assets	-18	6,791
Income tax recovery	-43,991	-18,868
Gain on litigation settlement	'	-560
Unrealized loss on gold and silver bullion	'	274
Stock-based compensation	609	686
Depreciation	454	527
Accretion of asset retirement obligation	209	234
Amortization of mineral property interests and asset retirement obligations	626	956
Foreign exchange loss	306	1,193
Change in non-cash working capital items:	'	'
Increase in other assets related to operations	-4,516	-1,534
Increase (decrease) in liabilities related to operations	2,440	-10,616
Dividend receivable from Minera Santa Cruz S.A	7,113	'
Cash used in operating activities	($7,096)	($34,675)

NATURE_OF_OPERATIONS_AND_SUMMA

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Jun. 30, 2014
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	'
	NOTE 1 NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

	Nature of Operations and Basis of Presentation

	McEwen Mining Inc. (the “Company” or “McEwen Mining”) was organized under the laws of the State of Colorado on July 24, 1979. Since inception, the Company has been engaged in the exploration for, development of, production and sale of gold and silver. On January 24, 2012, the Company changed its name from US Gold Corporation to McEwen Mining Inc. after the completion of the acquisition of Minera Andes Inc. (“Minera Andes”) by way of a statutory plan of arrangement under the laws of the Province of Alberta, Canada.

	The Company operates in Argentina, Mexico, and the United States. It owns a 49% interest in Minera Santa Cruz S.A. (“MSC”), owner and operator of the producing San José mine in Santa Cruz, Argentina, which is controlled by the majority owner of the joint venture, Hochschild Mining plc (‘‘Hochschild’’). It also owns the El Gallo 1 mine in Sinaloa, Mexico, where production resumed in September 2012. In addition to its operating properties, the Company also holds interests in numerous exploration stage properties and projects in Argentina, Mexico and the United States.

	The interim consolidated financial statements included herein have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and note disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) has been condensed or omitted pursuant to such rules and regulations, although the Company believes that the disclosures included are adequate to make the information presented not misleading.

	In management’s opinion, the unaudited Consolidated Statements of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2014 and 2013, the Consolidated Balance Sheets as at June 30, 2014 (unaudited) and December 31, 2013, the unaudited Consolidated Statement of Changes in Shareholders’ Equity for the six months ended June 30, 2014 and 2013, and the unaudited Consolidated Statements of Cash Flows for the six months ended June 30, 2014 and 2013, contained herein, reflect all adjustments, consisting solely of normal recurring items, which are necessary for the fair presentation of the Company’s financial position, results of operations and cash flows on a basis consistent with that of the Company’s prior audited consolidated financial statements. However, the results of operations for the interim periods may not be indicative of results to be expected for the full fiscal year. Therefore these financial statements should be read in conjunction with the audited financial statements and notes thereto and summary of significant accounting policies included in the Company’s Form 10-K for the year ended December 31, 2013. Except as noted below, there have been no material changes in the footnotes from those accompanying the audited consolidated financial statements contained in the Company’s Form 10-K for the year ended December 31, 2013.

	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All inter-company accounts and transactions have been eliminated.

	Recently Adopted Accounting Pronouncements

	Presentation of an Unrecognized Tax Benefit: In July 2013, ASC guidance was issued related to the 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 the same jurisdiction’s net operating loss carryforward, 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 position. The update was effective prospectively for the Company’s fiscal year beginning January 1, 2014. The new guidance affects disclosures only and the adoption had no impact on the Company’s consolidated financial position, results of operations or cash flows.

	Foreign Currency Matters: In March 2013, ASC guidance was issued related to Foreign Currency Matters to clarify the treatment of cumulative translation adjustments when a parent sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets that is a business within a foreign entity. The updated guidance also resolves the diversity in practice for the treatment of business combinations achieved in stages in a foreign entity. The update was effective prospectively for the Company’s fiscal year beginning January 1, 2014. The updated guidance had no impact on the Company’s consolidated financial position, results of operations or cash flows.

	Recently Issued Accounting Pronouncements

	Presentation of Financial Statements (ASC 205) and Property, Plant and Equipment (ASC 360) — Reporting Discontinued Operations and Disclosures of Components of an Entity: In April 2014, ASC guidance was amended to change the requirements for reporting discontinued operations in ASC 205-20. A disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations only if the disposal represents a strategic shift that has, or will have, a major effect on an entity’s operations and financial results when any of the following occurs: (1) the component of an entity or group of components of an entity meets the criteria in ASC 205-20-45-1E to be classified as held for sale; (2) the component of an entity or group of components of an entity is disposed of by sale; (3) the component of an entity or group of components of an entity is disposed of other than by sale. The update is effective prospectively for the Company’s fiscal year beginning January 1, 2015. The new guidance is not expected to have an impact on the Company’s consolidated financial position, results of operations or cash flows.

	Revenue from Contracts with Customers (ASC 606): In May 2014, ASC 606 was issued related to revenue from contracts with customers. Under this guidance, revenue is recognized when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The updated standard will replace most existing revenue recognition guidance under GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. Early adoption is not permitted. The standard will be effective for the Company’s fiscal year beginning January 1, 2017, including interim reporting periods within that year. The Company is evaluating the effect that the updated standard will have on its consolidated financial position, results of operations or cash flows.

INVENTORIES

INVENTORIES	6 Months Ended
	Jun. 30, 2014
INVENTORIES	'
INVENTORIES	'
	NOTE 2 INVENTORIES

	Inventories at June 30, 2014 and December 31, 2013 consist of the following:

		June 30, 2014		December 31, 2013
		(in thousands)
	Ore on leach pads	$	4,133	$	2,749
	In-process inventory	3,185		2,681
	Stockpiles	—		778
	Precious metals	1,438		1,300
	Materials and supplies	1,414		1,292
	Inventories	$	10,170	$	8,800

MINERAL_PROPERTY_INTERESTS_AND

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS	6 Months Ended
MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS	Jun. 30, 2014
MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS	'
MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS	'
	NOTE 3 MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS

	Mineral Property Interests

	During the second quarter of 2014, the Company recorded an impairment charge of $120.4 million relating to its Los Azules copper exploration project (“Los Azules Project”). The Company conducts a review of potential triggering events for all its mineral projects on a quarterly basis. When events or changes in circumstances indicate that the related carrying amounts may not be recoverable, the Company carries out a review and evaluation of its long-lived assets for impairment, in accordance with its accounting policy. Such a triggering event was identified in the second quarter of 2014 with respect to the Company’s Los Azules Project. The triggering event identified was a recently announced acquisition of a copper project located in Argentina, which shares similarities with the Los Azules Project due to its scale, location, and stage of development. Based on the announcement day value of the similar project, the estimated market value per pound of copper equivalent mineralized material from this transaction was below the carrying value per pound of copper equivalent mineralized material of the Los Azules Project, indicating a potential significant decrease in the market price of its Los Azules Project, in accordance with ASC 360-35-21-a, and therefore a requirement to test the Los Azules Project for recoverability. To assist in performing a recoverability test, the Company engaged a third-party valuation firm who used the observed market value per pound of copper equivalent mineralized material based on this recent and other comparable transactions to estimate the fair value of the Los Azules Project. The carrying value of the property exceeded its estimated fair value, resulting in an impairment charge of $120.4 million, along with a resulting deferred income tax recovery of $22.5 million, being recorded in the Statement of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2014.

	Impairments recorded in the second quarter of 2013 related to the Company’s exploration properties in Santa Cruz, Argentina. The impairments were primarily due to an unexpected significant decline in gold and silver market prices, continued inflationary pressures and a new tax on mining reserves in the Province, resulting in a depressed market for exploration properties in Argentina. An impairment charge of $27.7 million, along with a resulting reduction in deferred tax liability and recovery of deferred income taxes of $2.3 million, were included in the Statement of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2013.

	Based on the above, impairment charges were recorded on the following mineral property interests for the three and six months ended June 30, 2014 and 2013.

				Three months ended June 30,					Six months ended June 30,
	Name of Property/Complex	Segment		2014			2013		2014		2013
				(in thousands)
	Telken Tenements	Argentina		$	—		$	13,792	$	—	$	13,792
	Este Tenements	Argentina		—			2,784		—		2,784
	Piramides Tenements	Argentina		—			5,079		—		5,079
	Tobias Tenements	Argentina		—			6,074		—		6,074
	Los Azules Copper Project	Argentina		120,398			—		120,398		—
	Total impairments			$	120,398		$	27,729	$	120,398	$	27,729

	Asset Retirement Obligations

	The Company is responsible for reclamation of certain past and future disturbances at its properties. The two most significant properties subject to these obligations are the historic Tonkin property in Nevada and the El Gallo 1 mine in Mexico.

	The current undiscounted estimate of the reclamation costs for existing disturbances on the Tonkin property to the degree required by the U.S. Bureau of Land Management (“BLM”) and the Nevada Department of Environmental Protection (“NDEP”) was $2.7 million as of June 30, 2014. Expenses are expected to be incurred between the years 2014 and 2040. The Company submitted a mine closure plan to the NDEP and BLM for the Tonkin property during the fourth quarter of 2010. As at June 30, 2014, the closure plan has already been approved by the NDEP but is still under review by the BLM pursuant to the National Environmental Policy Act. It is possible that reclamation plan cost estimates and bonding requirements may increase as a result of this review. The Company, however, is unable to meaningfully estimate possible increases at this time.

	Asset Retirement Obligations (Continued)

	For mineral properties in the United States, the Company maintains required reclamation bonding with various governmental agencies. At December 31, 2013, the Company had cash bonding in place of $5.2 million. During the second quarter of 2014, cash bonding requirements were reduced by $0.4 million, to $4.8 million at June 30, 2014. Subsequent to June 30, 2014, the Company replaced its cash bonding with surety bonds of the same amounts. The annual fees are 1.5% of the value of the surety bonds, with an upfront 10% deposit.

	The current undiscounted estimate of the reclamation costs for existing disturbances at the El Gallo 1 mine was $4.6 million as of June 30, 2014. Expenses are expected to be incurred between the years 2014 and 2018. Under Mexican regulations, surety bonding of projected reclamation costs is not required.

	A reconciliation of the Company’s asset retirement obligations for the six months ended June 30, 2014 and for the year ended December 31, 2013 are as follows:

		Six months ended			Year Ended
		June 30, 2014			December 31, 2013
		(in thousands)
	Asset retirement obligation liability, beginning balance	$	7,247		$	6,359
	Settlements	(18		)	(60		)
	Accretion of liability	209			461
	Adjustment reflecting updated estimates	(42		)	487
	Asset retirement obligation liability, ending balance	$	7,396		$	7,247

	As at June 30, 2014, the current portion of the asset retirement obligation was $1.5 million (December 31, 2013 - $1.4 million).

	Amortization of Mineral Property Interests and Asset Retirement Costs

	The definition of proven and probable reserves is set forth in the SEC Industry Guide 7. If proven and probable reserves exist at the Company’s properties, the relevant capitalized mineral property interests and asset retirement costs are to be charged to expense based on the units of production method and upon commencement of production. Since the Company has not completed feasibility or other studies sufficient to characterize the mineralized material at El Gallo 1 as proven or probable reserves, the amortization of the capitalized mineral property interests and asset retirement costs are charged to expense based on the straight-line method over the estimated useful life of the mine. For the three and six months ended June 30, 2014, the Company recorded $0.3 million and $0.6 million, respectively, of amortization expense related to El Gallo 1, which is included in Production Costs Applicable to Sales in the Statement of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2014, of which $0.1 million and $0.1 million, respectively, related to the amortization of capitalized asset retirement costs.

INVESTMENT_IN_MINERA_SANTA_CRU

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	6 Months Ended
	Jun. 30, 2014
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'
	NOTE 4 INVESTMENT IN MINERA SANTA CRUZ S.A. (“MSC”) — SAN JOSÉ MINE

	The Company’s 49% attributable share of earnings from its investment in MSC was a loss of $2.4 million for the three months ended June 30, 2014, and income of $4.6 million for the six months ended June 30, 2014. This compares to losses of $1.6 million and $1.8 million for the three and six months ended June 30, 2013. These amounts are net of the amortization of the fair value increments arising from the purchase price allocation and related income tax expense. Included in the income tax expense is the impact of fluctuations in the exchange rate between the Argentine peso and the U.S. dollar on the peso-denominated deferred tax liability associated with the investment in MSC recorded as part of the acquisition of Minera Andes. As a devaluation of the Argentine peso relative to the U.S. dollar results in a recovery of deferred income taxes, the impact has been an increase to the Company’s income from its investment in MSC for the three and six months ended June 30, 2014.

	During the first quarter of 2013, it was determined that the cost of sales reported by MSC under U.S. GAAP for the year and three months ended December 31, 2012 was understated, resulting in an overstatement of MSC’s after-tax net income of $3.9 million. As the error was not material to previously-reported consolidated financial statements, the correction was recorded in the three months ended March 31, 2013. As a result, the income from the Company’s equity investment of 49% in MSC includes an adjustment of $1.9 million, resulting in a reduction of the Company’s Income from Investment in MSC for the six months ended June 30, 2013.

	During the second quarter of 2013, the Company recorded an impairment charge of $95.9 million on its investment in MSC, primarily as a result of an unexpected and significant decline in gold and silver market prices, continued inflationary pressures during the year, and amendments to the Santa Cruz Provincial Tax Code and Provincial Tax Law, which imposed a new tax on mining reserves in the Province of Santa Cruz. As the loss in value of the investment was considered other than temporary, an impairment of $95.9 million was recorded in the Company’s Consolidated Statement of Operations and Comprehensive Income (Loss) for the three and six months ended June 30, 2013.

	During the fourth quarter of 2013, the Company entered into a vend-in agreement with MSC and subsidiaries of Hochschild pursuant to which both parties agreed to contribute to MSC the mining rights of certain Santa Cruz exploration properties. The carrying value of the Company’s properties of $35.9 million, net of the related deferred tax liability of $17.3 million, was transferred to the Company’s investment in MSC, with no gain or loss recognized upon transfer.

	During the three and six months ended June 30, 2014, the Company received $3.2 million and $7.1 million in dividends from MSC, respectively, compared to $nil during the same period in 2013. The Company received an additional dividend payment of 8.1 million Argentine pesos in July 2014, equivalent to approximately $1.0 million based on foreign exchange rates at the date of the dividend receipt, and expects another payment of 8.1 million pesos in the third quarter of 2014, equivalent to approximately $1.0 million based on foreign exchange rates as at June 30, 2014.

	Changes in the Company’s investment in MSC for the six months ended June 30, 2014 and year ended December 31, 2013 are as follows:

		Six months ended			Year ended
		June 30, 2014			December 31, 2013
		(in thousands)
	Investment in MSC, beginning balance	$	212,947		$	273,948
	Income from equity investment	2,838			2,126
	Amortization of fair value increments	(6,130		)	(18,425		)
	Income tax recovery	7,883			17,145
	Dividend distribution	(7,113		)	(1,826		)
	Impairment of investment in MSC	—			(95,878		)
	Contribution of Santa Cruz exploration properties, net of tax	—			35,857
	Investment in MSC, ending balance	$	210,425		$	212,947

	A summary of the operating results from MSC for the three and six months ended June 30, 2014 and 2013 is as follows:

		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
		(in thousands)						(in thousands)
	Minera Santa Cruz S.A. (100%)
	Net sales	$	53,234		$	68,556		$	110,123		$	112,369
	Production costs applicable to sales	(41,847		)	(57,606		)	(81,484		)	(94,409		)
	(Loss) income from operations before extraordinary items	(390		)	124			5,792			2,564
	Net (loss) income	(390		)	124			5,792			2,564

	Portion attributable to McEwen Mining Inc. (49%)
	Net (loss) income	$	(191	)	$	61		$	2,838		$	1,256
	Amortization of fair value increments	(3,429		)	(6,710		)	(6,130		)	(12,003		)
	Income tax recovery	1,182			5,098			7,883			8,959
	(Loss) income on investment in MSC, net of amortization	$	(2,438	)	$	(1,551	)	$	4,591		$	(1,788	)

	As at June 30, 2014, MSC had current assets of $100.0 million, total assets of $529.5 million, current liabilities of $48.1 million and total liabilities of $140.0 million on an unaudited basis. These balances include the increase in fair value and amortization of the fair value increments arising from the purchase price allocation and are net of the impairment charge of $95.9 million recorded in the second quarter of 2013. Excluding the fair value increments from the purchase price allocation and the impairment charge recorded in the second quarter of 2013, MSC had current assets of $102.7 million, total assets of $312.7 million, current liabilities of $48.1 million, and total liabilities of $89.2 million as at June 30, 2014.

PROPERTY_AND_EQUIPMENT

PROPERTY AND EQUIPMENT	6 Months Ended
	Jun. 30, 2014
PROPERTY AND EQUIPMENT	'
PROPERTY AND EQUIPMENT	'
	NOTE 5 PROPERTY AND EQUIPMENT

	As at June 30, 2014 and December 31, 2013, property and equipment consisted of the following:

		June 30, 2014			December 31, 2013
		(in thousands)
	Trucks and trailers	$	1,012		$	1,041
	Office furniture and equipment	1,756			1,163
	Drill rigs	998			998
	Building	1,469			1,469
	Land	8,699			8,672
	Mining equipment	1,409			1,206
	Construction-in-progress	5,329			3,894
	Subtotal	$	20,672		$	18,443
	Less: accumulated depreciation	(3,700		)	(3,300		)
	Total	$	16,972		$	15,143

	The increase in property and equipment from December 31, 2013 to June 30, 2014 was mainly in relation to construction-in-progress assets, which include advances the Company made to a supplier for long-lead items for its El Gallo 2 project, as well as leasehold improvements as a result of the Company’s relocation of its corporate office.

	Depreciation expense for the three and six months ended June 30, 2014 was $0.2 million and $0.5 million, respectively (2013 - $0.2 million and $0.5 million, respectively).

SHAREHOLDERS_EQUITY

SHAREHOLDERS' EQUITY	6 Months Ended
SHAREHOLDERS' EQUITY	Jun. 30, 2014
SHAREHOLDERS' EQUITY	'
SHAREHOLDERS' EQUITY	'
	NOTE 6 SHAREHOLDERS’ EQUITY

	During the six months ended June 30, 2014, 1.2 million exchangeable shares were converted into common stock. At June 30, 2014, total outstanding exchangeable shares not exchanged and not owned by the Company or its subsidiaries totaled 30.6 million.

	During the six months ended June 30, 2014, the Company issued approximately 60,300 shares of common stock upon exercise of stock options under the Equity Incentive Plan at a weighted average exercise price of $2.14 per share for proceeds of $0.1 million.

	In 2013, the Company entered into an agreement with one of its mining contractors to settle parts of its account payables with shares of common stock of the Company, up to a maximum of 2,500,000 shares. The number of shares to be issued is determined monthly, based on the amount payable by the Company for services rendered above a defined tonnage threshold, using the closing price of the common stock quoted on active markets at the end of every month. As at June 30, 2014, the Company was required to issue a cumulative total of approximately 379,400 common shares under this agreement. The fair value of this liability of $1.1 million is included in accounts payable and accrued liabilities on the Consolidated Balance Sheet as at June 30, 2014. Approximately 107,400 shares were issued in July 2014, with the remainder to be issued later in 2014.

STOCKBASED_COMPENSATION

STOCK-BASED COMPENSATION	6 Months Ended
	Jun. 30, 2014
STOCK-BASED COMPENSATION	'
STOCK-BASED COMPENSATION	'
	NOTE 7 STOCK-BASED COMPENSATION

	During the three and six months ended June 30, 2014, no stock options were granted to employees or directors. For the comparable periods in 2013, the Company granted stock options to certain employees and directors for an aggregate of 1.7 million shares of common stock at an exercise of $2.25 per share. The principal assumptions used in applying the Black-Scholes option pricing model for these awards were as follows:

		Three months ended June 30,				Six months ended June 30,
		2014	2013			2014	2013
	Risk-free interest rate	—	0.50		%	—	0.50		%
	Dividend yield	—	n/a			—	n/a
	Volatility factor of the expected market price of common stock	—	66		%	—	66		%
	Weighted-average expected life of option	—	3.5 years			—	3.5 years
	Weighted-average grant date fair value	—	$	1.01		—	$	1.01

	During the three and six months ended June 30, 2014, the Company recorded stock option expense of $0.2 million and $0.6 million, respectively. This compares to $0.3 million and $0.7 million for the three and six months ended June 30, 2013.

INCOME_TAXES

INCOME TAXES	6 Months Ended
INCOME TAXES	Jun. 30, 2014
INCOME TAXES	'
INCOME TAXES	'
	NOTE 8 INCOME TAXES

	The Company’s income tax expense differs from the amount computed by applying the U.S. federal and state statutory corporate income tax rate of 35% primarily as a result of the tax benefit of losses not being recognized and due to changes in the deferred tax liability associated with mineral property interests acquired with the Minera Andes acquisition. This deferred tax liability is impacted by fluctuations in the foreign exchange rate between the Argentine peso and U.S. dollar. For the three and six months ended June 30, 2014, the Company recorded an income tax recovery of $2.5 million and $21.4 million, respectively, as a result of the Argentine peso devaluation, compared to $7.5 million and $13.7 million for the three and six months ended June 30, 2013, respectively. Further, the income tax recovery for the three and six months ended June 30, 2014 includes $22.5 million associated with the impairment of the Los Azules Project, discussed in Note 3, Mineral Property Interests and Asset Retirement Obligations. This compares to an income tax recovery of $4.8 million related to mineral property interests sold or impaired in the three and six months ended June 30, 2013.

INCOME_LOSS_PER_SHARE

INCOME (LOSS) PER SHARE	6 Months Ended
	Jun. 30, 2014
INCOME (LOSS) PER SHARE	'
INCOME (LOSS) PER SHARE	'
	NOTE 9 INCOME (LOSS) PER SHARE

	Basic net income (loss) per share is computed by dividing the net income (loss) available to common shareholders by the weighted average number of common shares outstanding during the period. Diluted net income (loss) per share is computed similarly except that the weighted average number of common shares is increased to reflect all dilutive instruments.

	Below is a reconciliation of the basic and diluted weighted average number of common shares and the computations for basic income (loss) per share for the three and six months ended June 30, 2014 and 2013:

		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
		(in thousands, except per share)

	Net loss	$	(104,022	)	$	(128,681	)	$	(86,135	)	$	(139,663	)
	Weighted average number of common shares	297,164			297,097			297,162			296,938
	Loss per common share	$	(0.35	)	$	(0.43	)	$	(0.29	)	$	(0.47	)

	For the three months ended June 30, 2014, options to purchase 2.0 million shares of common stock outstanding at June 30, 2014 (June 30, 2013 — 3.8 million) at an average exercise price of $5.03 per share (June 30, 2013 — $3.90) were not included in the computation of diluted weighted average shares because their exercise price exceeded the average price of the Company’s common stock for the three months ended June 30, 2014 and 2013, respectively. Other outstanding options to purchase 0.9 million (June 30, 2013 — 0.8 million) shares of common stock were not included in the computation of diluted weighted average shares in the three months ended June 30, 2014 and 2013, respectively, because their effect would have been anti-dilutive.

	For the six months ended June 30, 2014, options to purchase 1.4 million shares of common stock outstanding at June 30, 2014 (June 30, 2013 — 1.6 million) at an average exercise price of $5.96 per share (June 30, 2013 — $5.98) were not included in the computation of diluted weighted average shares because their exercise price exceeded the average price of the Company’s common stock for the three months ended June 30, 2014 and 2013, respectively. Other outstanding options to purchase 1.1 million shares of common stock (June 30, 2013 — 1.0 million) were not included in the computation of diluted weighted average shares in the six months ended June 30, 2014 and 2013, respectively, because their effect would have been anti-dilutive.

RELATED_PARTY_TRANSACTIONS

RELATED PARTY TRANSACTIONS	6 Months Ended
RELATED PARTY TRANSACTIONS	Jun. 30, 2014
RELATED PARTY TRANSACTIONS	'
RELATED PARTY TRANSACTIONS	'
	NOTE 10 RELATED PARTY TRANSACTIONS

	For the three and six months ended June 30, 2014, the Company incurred and paid $18,038 and $38,518, respectively, to an entity affiliated with the Company’s Chairman and Chief Executive Officer for the use of an aircraft, compared to nil and $70,525 for the three and six months ended June 30, 2013, respectively.

SEGMENTED_INFORMATION

SEGMENTED INFORMATION	6 Months Ended
	Jun. 30, 2014
SEGMENTED INFORMATION	'
SEGMENTED INFORMATION	'
	NOTE 11 SEGMENTED INFORMATION

	McEwen Mining is a mining and minerals exploration, development and production company focused on precious metals in Argentina, Mexico and the United States. The Company identifies its reportable segments as those consolidated operations that are currently engaged in the exploration for and production of precious metals. Operations not actively engaged in the exploration for, or production of precious metals, are aggregated at the corporate level for segment reporting purposes.

	The financial information relating to the Company’s operating segments as of, and for the three and six months ended June 30, 2014 and 2013 is as follows:

											Corporate
		Argentina			Mexico			U.S.			& Other			Total
		(in thousands)
	For the three months ended June 30, 2014
	Gold and silver sales	$	—		$	11,637		$	—		$	—		$	11,637
	Production costs applicable to sales	—			(10,900		)	—			—			(10,900		)
	Mine construction costs	—			(217		)	—			—			(217		)
	Mine development costs	—			(155		)	—			—			(155		)
	Exploration costs	(249		)	(1,488		)	(831		)	(69		)	(2,637		)
	Impairment of mineral property interests and property and equipment	(120,398		)	—			—			—			(120,398		)
	Loss on investment in Minera Santa Cruz S.A. (net of amortization)	(2,438		)	—			—			—			(2,438		)
	Operating loss	(123,817		)	(2,150		)	(1,025		)	(2,382		)	(129,374		)

	For the six months ended June 30, 2014
	Gold and silver sales	$	—		$	22,767		$	—		$	—		$	22,767
	Production costs applicable to sales	—			(19,427		)	—			—			(19,427		)
	Mine construction costs	—			(1,156		)	—			—			(1,156		)
	Mine development costs	—			(1,723		)	—			—			(1,723		)
	Exploration costs	(750		)	(2,876		)	(1,517		)	(174		)	(5,317		)
	Impairment of mineral property interests and property and equipment	(120,398		)	—			—			—			(120,398		)
	Income on investment in Minera Santa Cruz S.A. (net of amortization)	4,591			—			—			—			4,591
	Operating loss	(117,559		)	(5,198		)	(2,454		)	(4,725		)	(129,936		)

	As at June 30, 2014
	Investment in Minera Santa Cruz S.A.	210,425			—			—			—			210,425
	Mineral property interests	337,805			11,341			172,738			—			521,884
	Total assets	551,324			59,649			176,415			8,882			796,270

											Corporate
		Argentina			Mexico			U.S.			& Other			Total
		(in thousands)
	For the three months ended June 30, 2013
	Gold and silver sales	$	—		$	10,459		$	—		$	—		$	10,459
	Production costs applicable to sales	—			(8,278		)	—			—			(8,278		)
	Mine development costs	—			(98		)	—			—			(98		)
	Exploration costs	(2,017		)	(1,949		)	(870		)	(53		)	(4,889		)
	Income on investment in Minera Santa Cruz S.A. (net of amortization)	(1,551		)	—			—			—			(1,551		)
	Impairment of investment in MSC	(95,878		)	—			—			—			(95,878		)
	Impairment of mineral property interests and property and equipment	(27,729		)	—			—			—			(27,729		)
	Gain on sale of assets	(326		)	—			(6,468		)	3			(6,791		)
	Operating loss	(129,703		)	(970		)	(6,110		)	(2,871		)	(139,654		)

	For the six months ended June 30, 2013
	Gold and silver sales	$	—		$	23,957		$	—		$	—		$	23,957
	Production costs applicable to sales	—			(18,871		)	—			—			(18,871		)
	Mine development costs	—			(569		)	—			—			(569		)
	Exploration costs	(13,479		)	(4,434		)	(1,450		)	(126		)	(19,489		)
	Loss on investment in Minera Santa Cruz S.A. (net of amortization)	(1,788		)	—			—			—			(1,788		)
	Impairment of investment in MSC	(95,878		)	—			—			—			(95,878		)
	Impairment of mineral property interests and property and equipment	(27,729		)	—			—			—			(27,729		)
	Gain on sale of assets	(326		)	—			(6,468		)	3			(6,791		)
	Operating loss	(141,615		)	(3,020		)	(7,055		)	(6,331		)	(158,021		)

	As at December 31, 2013
	Investment in Minera Santa Cruz S.A.	212,947			—			—			—			212,947
	Mineral property interests	458,203			11,984			172,781			—			642,968
	Total assets	674,269			54,131			177,248			17,418			923,066

FAIR_VALUE_ACCOUNTING

FAIR VALUE ACCOUNTING	6 Months Ended
FAIR VALUE ACCOUNTING	Jun. 30, 2014
FAIR VALUE ACCOUNTING	'
FAIR VALUE ACCOUNTING	'
	NOTE 12 FAIR VALUE ACCOUNTING

	Fair value accounting establishes 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 and 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 1Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;

	Level 2Quoted 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 3Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).

	Assets and liabilities measured at fair value on a recurring basis

	The following table identifies the fair value of the Company’s financial assets and liabilities as reported in the Consolidated Balance Sheets at June 30, 2014 and December 31, 2013 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.

			Fair Value as at June 30, 2014
			Total			Level 1			Level 2			Level 3
			(in thousands)
	Assets:
	Cash and cash equivalents		$	15,149		$	15,149		$	—		$	—
			$	15,149		$	15,149		$	—		$	—
	Liabilities:
	Accounts payable and accrued liabilities		$	1,093		$	1,093		$	—		$	—
			$	1,093		$	1,093		$	—		$	—

			Fair Value as at December 31, 2013
			Total			Level 1			Level 2			Level 3
			(in thousands)
	Assets:
	Cash and cash equivalents		$	24,321		$	24,321		$	—		$	—
			$	24,321		$	24,321		$	—		$	—
	Liabilities:
	Accounts payable and accrued liabilities		177			177			—			—
			$	177		$	177		$	—		$	—

	The Company’s cash and cash equivalents are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. The cash equivalent instruments that are valued based on quoted market prices in active markets are primarily money market securities.

	As at June 30, 2014, accounts payable included an accrual of $1.1 million for the fair value of approximately 379,400 shares of common stock that are required to be issued as part of the settlement of certain amounts due by the Company to one of its vendors, as discussed in Note 6, Shareholders’ Equity. As the Company’s stock is quoted on an active market, this liability is classified within Level 1 of the fair value hierarchy.

	The fair value of other financial assets and liabilities approximate their carrying values due to their short-term nature and historically negligible credit losses.

	Assets and liabilities measured at fair value on a non-recurring basis

	In the second quarter of 2014, the Company recorded impairment charges related to the Los Azules Project in Argentina, as discussed in Note 3, Mineral Property Interests and Asset Retirement Obligations. The estimated fair value of the Los Azules Project was determined using the observed market value per pound of copper equivalent for recent comparable transactions.

	The following table summarizes non-financial assets measured at fair value on a non-recurring basis as part of the Company’s impairment assessments during the three and six months ended June 30, 2014, and for the year ended December 31, 2013.

			Date of Fair Value		Fair Value Measurements for the Six Months Ended June 30, 2014
			Measurement		Total			Level 1			Level 2			Level 3			Total Loss
					(in thousands)
	Mineral property interests
	Los Azules Copper Project		June 30, 2014		310,792			—			—			310,792			120,398
					$	310,792		$	—		$	—		$	310,792		$	120,398

			Date of Fair Value		Fair Value Measurements for the Year Ended December 31, 2013
			Measurement		Total			Level 1			Level 2			Level 3			Total Loss
					(in thousands)
	Mineral property interests
	Telken Tenements		30-Jun-13		$	26,442		$	—		$	—		$	26,442		$	13,792
	Este Tenements		30-Jun-13		5,337			—			—			5,337			2,784
	Piramides Tenements		30-Jun-13		9,736			—			—			9,736			5,079
	Tobias Tenements		30-Jun-13		11,645			—			—			11,645			6,074
	Limo Complex		31-Dec-13		23,438			—			—			23,438			19,450
	Other United States Properties		31-Dec-13		9,610			—			—			9,610			9,497
Investment in MSC		30-Jun-13		176,282			—			—			176,282			95,878
				$	262,490		$	—		$	—		$	262,490		$	152,554

INVENTORIES_Tables

INVENTORIES (Tables)	6 Months Ended
	Jun. 30, 2014
INVENTORIES	'
Schedule of inventories	'

		June 30, 2014		December 31, 2013
		(in thousands)
	Ore on leach pads	$	4,133	$	2,749
	In-process inventory	3,185		2,681
	Stockpiles	—		778
	Precious metals	1,438		1,300
	Materials and supplies	1,414		1,292
	Inventories	$	10,170	$	8,800

MINERAL_PROPERTY_INTERESTS_AND1

MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS (Tables)	6 Months Ended
	Jun. 30, 2014
MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS	'
Schedule of impairment charges on mineral property	'

				Three months ended June 30,					Six months ended June 30,
	Name of Property/Complex	Segment		2014			2013		2014		2013
				(in thousands)
	Telken Tenements	Argentina		$	—		$	13,792	$	—	$	13,792
	Este Tenements	Argentina		—			2,784		—		2,784
	Piramides Tenements	Argentina		—			5,079		—		5,079
	Tobias Tenements	Argentina		—			6,074		—		6,074
	Los Azules Copper Project	Argentina		120,398			—		120,398		—
	Total impairments			$	120,398		$	27,729	$	120,398	$	27,729


Schedule of reconciliation of asset retirement obligations	'

		Six months ended			Year Ended
		June 30, 2014			December 31, 2013
		(in thousands)
	Asset retirement obligation liability, beginning balance	$	7,247		$	6,359
	Settlements	(18		)	(60		)
	Accretion of liability	209			461
	Adjustment reflecting updated estimates	(42		)	487
	Asset retirement obligation liability, ending balance	$	7,396		$	7,247

INVESTMENT_IN_MINERA_SANTA_CRU1

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Tables)	6 Months Ended
	Jun. 30, 2014
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'
Schedule of change in the entity's investment in MSC	'

		Six months ended			Year ended
		June 30, 2014			December 31, 2013
		(in thousands)
	Investment in MSC, beginning balance	$	212,947		$	273,948
	Income from equity investment	2,838			2,126
	Amortization of fair value increments	(6,130		)	(18,425		)
	Income tax recovery	7,883			17,145
	Dividend distribution	(7,113		)	(1,826		)
	Impairment of investment in MSC	—			(95,878		)
	Contribution of Santa Cruz exploration properties, net of tax	—			35,857
	Investment in MSC, ending balance	$	210,425		$	212,947


Summary of MSC's financial information from operations	'

		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
		(in thousands)						(in thousands)
	Minera Santa Cruz S.A. (100%)
	Net sales	$	53,234		$	68,556		$	110,123		$	112,369
	Production costs applicable to sales	(41,847		)	(57,606		)	(81,484		)	(94,409		)
	(Loss) income from operations before extraordinary items	(390		)	124			5,792			2,564
	Net (loss) income	(390		)	124			5,792			2,564

	Portion attributable to McEwen Mining Inc. (49%)
	Net (loss) income	$	(191	)	$	61		$	2,838		$	1,256
	Amortization of fair value increments	(3,429		)	(6,710		)	(6,130		)	(12,003		)
	Income tax recovery	1,182			5,098			7,883			8,959
	(Loss) income on investment in MSC, net of amortization	$	(2,438	)	$	(1,551	)	$	4,591		$	(1,788	)

PROPERTY_AND_EQUIPMENT_Tables

PROPERTY AND EQUIPMENT (Tables)	6 Months Ended
	Jun. 30, 2014
PROPERTY AND EQUIPMENT	'
Schedule of property and equipment	'

		June 30, 2014			December 31, 2013
		(in thousands)
	Trucks and trailers	$	1,012		$	1,041
	Office furniture and equipment	1,756			1,163
	Drill rigs	998			998
	Building	1,469			1,469
	Land	8,699			8,672
	Mining equipment	1,409			1,206
	Construction-in-progress	5,329			3,894
	Subtotal	$	20,672		$	18,443
	Less: accumulated depreciation	(3,700		)	(3,300		)
	Total	$	16,972		$	15,143

STOCK_BASED_COMPENSATION_Table

STOCK BASED COMPENSATION (Tables)	6 Months Ended
STOCK BASED COMPENSATION (Tables)	Jun. 30, 2014
STOCK-BASED COMPENSATION	'
Schedule of weighted-average assumptions used for estimation of the fair value of the options granted under the Plan at the date of grant, using the Black-Scholes Option Valuation Model	'

		Three months ended June 30,				Six months ended June 30,
		2014	2013			2014	2013
	Risk-free interest rate	—	0.50		%	—	0.50		%
	Dividend yield	—	n/a			—	n/a
	Volatility factor of the expected market price of common stock	—	66		%	—	66		%
	Weighted-average expected life of option	—	3.5 years			—	3.5 years
	Weighted-average grant date fair value	—	$	1.01		—	$	1.01

INCOME_LOSS_PER_SHARE_Tables

INCOME (LOSS) PER SHARE (Tables)	6 Months Ended
	Jun. 30, 2014
INCOME (LOSS) PER SHARE	'
Schedule of reconciliation of the basic and diluted weighted average number of common shares and the computations for basic income (loss) per share	'

		Three months ended June 30,						Six months ended June 30,
		2014			2013			2014			2013
		(in thousands, except per share)

	Net loss	$	(104,022	)	$	(128,681	)	$	(86,135	)	$	(139,663	)
	Weighted average number of common shares	297,164			297,097			297,162			296,938
	Loss per common share	$	(0.35	)	$	(0.43	)	$	(0.29	)	$	(0.47	)

SEGMENTED_INFORMATION_Tables

SEGMENTED INFORMATION (Tables)	6 Months Ended
	Jun. 30, 2014
SEGMENTED INFORMATION	'
Schedule of the financial information relating to the Company's segments	'

											Corporate
		Argentina			Mexico			U.S.			& Other			Total
		(in thousands)
	For the three months ended June 30, 2014
	Gold and silver sales	$	—		$	11,637		$	—		$	—		$	11,637
	Production costs applicable to sales	—			(10,900		)	—			—			(10,900		)
	Mine construction costs	—			(217		)	—			—			(217		)
	Mine development costs	—			(155		)	—			—			(155		)
	Exploration costs	(249		)	(1,488		)	(831		)	(69		)	(2,637		)
	Impairment of mineral property interests and property and equipment	(120,398		)	—			—			—			(120,398		)
	Loss on investment in Minera Santa Cruz S.A. (net of amortization)	(2,438		)	—			—			—			(2,438		)
	Operating loss	(123,817		)	(2,150		)	(1,025		)	(2,382		)	(129,374		)

	For the six months ended June 30, 2014
	Gold and silver sales	$	—		$	22,767		$	—		$	—		$	22,767
	Production costs applicable to sales	—			(19,427		)	—			—			(19,427		)
	Mine construction costs	—			(1,156		)	—			—			(1,156		)
	Mine development costs	—			(1,723		)	—			—			(1,723		)
	Exploration costs	(750		)	(2,876		)	(1,517		)	(174		)	(5,317		)
	Impairment of mineral property interests and property and equipment	(120,398		)	—			—			—			(120,398		)
	Income on investment in Minera Santa Cruz S.A. (net of amortization)	4,591			—			—			—			4,591
	Operating loss	(117,559		)	(5,198		)	(2,454		)	(4,725		)	(129,936		)

	As at June 30, 2014
	Investment in Minera Santa Cruz S.A.	210,425			—			—			—			210,425
	Mineral property interests	337,805			11,341			172,738			—			521,884
	Total assets	551,324			59,649			176,415			8,882			796,270

											Corporate
		Argentina			Mexico			U.S.			& Other			Total
		(in thousands)
	For the three months ended June 30, 2013
	Gold and silver sales	$	—		$	10,459		$	—		$	—		$	10,459
	Production costs applicable to sales	—			(8,278		)	—			—			(8,278		)
	Mine development costs	—			(98		)	—			—			(98		)
	Exploration costs	(2,017		)	(1,949		)	(870		)	(53		)	(4,889		)
	Income on investment in Minera Santa Cruz S.A. (net of amortization)	(1,551		)	—			—			—			(1,551		)
	Impairment of investment in MSC	(95,878		)	—			—			—			(95,878		)
	Impairment of mineral property interests and property and equipment	(27,729		)	—			—			—			(27,729		)
	Gain on sale of assets	(326		)	—			(6,468		)	3			(6,791		)
	Operating loss	(129,703		)	(970		)	(6,110		)	(2,871		)	(139,654		)

	For the six months ended June 30, 2013
	Gold and silver sales	$	—		$	23,957		$	—		$	—		$	23,957
	Production costs applicable to sales	—			(18,871		)	—			—			(18,871		)
	Mine development costs	—			(569		)	—			—			(569		)
	Exploration costs	(13,479		)	(4,434		)	(1,450		)	(126		)	(19,489		)
	Loss on investment in Minera Santa Cruz S.A. (net of amortization)	(1,788		)	—			—			—			(1,788		)
	Impairment of investment in MSC	(95,878		)	—			—			—			(95,878		)
	Impairment of mineral property interests and property and equipment	(27,729		)	—			—			—			(27,729		)
	Gain on sale of assets	(326		)	—			(6,468		)	3			(6,791		)
	Operating loss	(141,615		)	(3,020		)	(7,055		)	(6,331		)	(158,021		)

	As at December 31, 2013
	Investment in Minera Santa Cruz S.A.	212,947			—			—			—			212,947
	Mineral property interests	458,203			11,984			172,781			—			642,968
	Total assets	674,269			54,131			177,248			17,418			923,066

FAIR_VALUE_ACCOUNTING_Tables

FAIR VALUE ACCOUNTING (Tables)	6 Months Ended
FAIR VALUE ACCOUNTING (Tables)	Jun. 30, 2014
FAIR VALUE ACCOUNTING	'
Schedule of assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy	'

		Fair Value as at June 30, 2014
		Total			Level 1			Level 2			Level 3
		(in thousands)
	Assets:
	Cash and cash equivalents	$	15,149		$	15,149		$	—		$	—
		$	15,149		$	15,149		$	—		$	—
	Liabilities:
	Accounts payable and accrued liabilities	$	1,093		$	1,093		$	—		$	—
		$	1,093		$	1,093		$	—		$	—
		Fair Value as at December 31, 2013
		Total			Level 1			Level 2			Level 3
		(in thousands)
	Assets:
	Cash and cash equivalents	$	24,321		$	24,321		$	—		$	—
		$	24,321		$	24,321		$	—		$	—
	Liabilities:
	Accounts payable and accrued liabilities	177			177			—			—
		$	177		$	177		$	—		$	—


Schedule of assets measured at fair value on a nonrecurring basis after initial recognition	'
		Date of Fair Value		Fair Value Measurements for the Six Months Ended June 30, 2014
		Measurement		Total			Level 1			Level 2			Level 3		Total Loss
				(in thousands)
	Mineral property interests
	Los Azules Copper Project	June 30, 2014		310,792			—			—			310,792		120,398
				$	310,792		$	—		$	—		$	310,792	$	120,398

		Date of Fair Value		Fair Value Measurements for the Year Ended December 31, 2013
		Measurement		Total			Level 1			Level 2			Level 3		Total Loss
				(in thousands)
	Mineral property interests
	Telken Tenements	30-Jun-13		$	26,442		$	—		$	—		$	26,442	$	13,792
	Este Tenements	30-Jun-13		5,337			—			—			5,337		2,784
	Piramides Tenements	30-Jun-13		9,736			—			—			9,736		5,079
	Tobias Tenements	30-Jun-13		11,645			—			—			11,645		6,074
	Limo Complex	31-Dec-13		23,438			—			—			23,438		19,450
	Other United States Properties	31-Dec-13		9,610			—			—			9,610		9,497
	Investment in MSC	30-Jun-13		176,282			—			—			176,282		95,878
				$	262,490		$	—		$	—		$	262,490	$	152,554

NATURE_OF_OPERATIONS_AND_SUMMA1

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (Minera Santa Cruz S A [Member])	Jun. 30, 2014	Jun. 30, 2013
Minera Santa Cruz S A [Member]	'	'
THE COMPANY	'	'
Ownership interest (as a percent)	49.00%	49.00%

INVENTORIES_Details

INVENTORIES (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
INVENTORIES	'	'
Ore on leach pads	$4,133	$2,749
In-process inventory	3,185	2,681
Stockpiles	'	778
Precious metals	1,438	1,300
Materials and supplies	1,414	1,292
Inventories	$10,170	$8,800

MINERAL_PROPERTY_INTERSTS_AND_

MINERAL PROPERTY INTERSTS AND ASSET RETIREMENT OBLIGATIONS (Details) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Subsequent Event [Member]

Argentina Reportable Segment [Member]

Tonkin Complex And El Gallo One Mine Complex [Member]

Tonkin Complex [Member]

El Gallo Complex [Member]

Telken Tenements [Member]

Este Tenements [Member]

Piramides Tenements [Member]

Tobias Tenements [Member]

Exploration Properties Located In Santa Cruz Province Argentina [Member]

Los Azules Copper Project [Member]

item

Argentina Reportable Segment [Member]

Mineral Property Interests [Line Items]

Number of most significant properties subject to reclamation obligations

Undiscounted estimated reclamation costs

$2,700,000

$4,600,000

Cash bonding for mineral properties in the United States

4,817,000

5,183,000

Reduction in cash bonding requirements

-367,000

Percentage of annual fees on surety bonds

1.50%

Percentage of upfront deposit on surety bonds

10.00%

Amortization of mineral property interests and asset retirement obligations

626,000

956,000

300,000

600,000

Amortization of capitalized asset retirement costs

100,000

Impairment charges

120,398,000

27,729,000

120,398,000

27,729,000

120,398,000

27,729,000

120,398,000

27,729,000

13,792,000

2,784,000

5,079,000

6,074,000

27,700,000

120,400,000

120,398,000

Recovery of deferred income tax

22,500,000

4,800,000

22,500,000

4,800,000

2,300,000

22,500,000

Changes in the asset retirement obligations

Asset retirement obligation liability, beginning balance

7,247,000

6,359,000

Settlements

-18,000

-60,000

Accretion of liability

108,000

121,000

209,000

234,000

461,000

Adjustment reflecting updated estimates

-42,000

487,000

Asset retirement obligation liability, ending balance

7,396,000

7,247,000

Current portion of the asset retirement obligation

$1,455,000

$1,392,000

INVESTMENT_IN_MINERA_SANTA_CRU2

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Details)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Mar. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jul. 31, 2014

Sep. 30, 2014

Dec. 31, 2013

USD ($)

Minera Santa Cruz S A [Member]

USD ($)

Scenario Forecast [Member]

Exploration Properties Located In Santa Cruz Province Argentina [Member]

USD ($)

ARS

USD ($)

ARS

Vend In Agreement [Member]

USD ($)

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE

Ownership interest (as a percent)

49.00%

Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization)

($2,438,000)

($1,551,000)

$4,591,000

($1,788,000)

($2,438,000)

($1,551,000)

$4,591,000

($1,788,000)

Equity method investment, overstatement of income from prior year recorded in current period

3,900,000

Entity's share of income in investee, understatement of income from prior year recorded in current period

1,900,000

Impairment of investment in MSC

95,878,000

95,900,000

95,878,000

Carrying value of properties, net of tax

35,857,000

35,900,000

Deferred tax liability related to mineral properties transferred

17,300,000

(Gain) loss on sale of assets

-18,000

6,791,000

-18,000

6,791,000

Dividends received

$7,113,000

$3,200,000

$7,100,000

$1,000,000

8,100,000

$1,000,000

8,100,000

INVESTMENT_IN_MINERA_SANTA_CRU3

INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE (Details 2) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Change in the investment in MSC	'	'	'	'	'
Investment in MSC, beginning balance	'	'	$212,947	'	'
Income tax recovery	-25,034	-12,405	-43,991	-18,868	'
Impairment of investment in MSC	'	-95,878	'	-95,878	'
Investment in MSC, ending balance	210,425	212,947	210,425	212,947	'
Minera Santa Cruz S A [Member]	'	'	'	'	'
Change in the investment in MSC	'	'	'	'	'
Investment in MSC, beginning balance	'	'	212,947	273,948	273,948
Income from equity investment	-191	61	2,838	1,256	2,126
Amortization of fair value increments	-3,429	-6,710	-6,130	-12,003	-18,425
Income tax recovery	1,182	5,098	7,883	8,959	17,145
Dividend distribution	'	'	-7,113	'	-1,826
Impairment of investment in MSC	'	-95,900	'	-95,900	-95,878
Contribution of Santa Cruz exploration properties, net of tax	'	'	'	'	35,857
Investment in MSC, ending balance	$210,425	'	$210,425	'	$212,947

INVESTMENT_IN_MINERA_SANTA_CRU4

INVESTMENT IN MINERA SANTA CRUZ S.A. (''MSC'') - SAN JOSE MINE (Details 3) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'	'	'	'	'
Income tax recovery	($25,034)	($12,405)	($43,991)	($18,868)	'
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization)	-2,438	-1,551	4,591	-1,788	'
Minera Santa Cruz S A [Member]	'	'	'	'	'
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'	'	'	'	'
Net sales percentage	100.00%	100.00%	100.00%	100.00%	'
Net sales	53,234	68,556	110,123	112,369	'
Production costs applicable to sales	-41,847	-57,606	-81,484	-94,409	'
(Loss) income from operations before extraordinary items	-390	124	5,792	2,564	'
Net (loss) income	-390	124	5,792	2,564	'
Ownership interest (as a percent)	49.00%	49.00%	49.00%	49.00%	'
Net (loss) income	-191	61	2,838	1,256	2,126
Amortization of fair value increments	-3,429	-6,710	-6,130	-12,003	-18,425
Income tax recovery	1,182	5,098	7,883	8,959	17,145
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization)	($2,438)	($1,551)	$4,591	($1,788)	'

INVESTMENT_IN_MINERA_SANTA_CRU5

INVESTMENT IN MINERA SANTA CRUZ S.A. (''MSC'') - SAN JOSE MINE (Details 4) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'	'	'	'
Current assets	'	'	$46,771	$42,081
Total assets	923,066	923,066	923,066	796,270
Current liabilities	'	'	11,189	13,693
Total liabilities	'	'	176,299	134,897
Impairment of investment in MSC	95,878	95,878	'	'
Minera Santa Cruz S A [Member]	'	'	'	'
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'	'	'	'
Current assets	'	'	'	100,000
Total assets	'	'	'	529,500
Current liabilities	'	'	'	48,100
Total liabilities	'	'	'	140,000
Impairment of investment in MSC	95,900	95,900	95,878	'
Minera Santa Cruz S A [Member] \| Current Period Values Excluding Fair Value Increments And Impairment Charge [Member]	'	'	'	'
INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE	'	'	'	'
Current assets	'	'	'	102,700
Total assets	'	'	'	312,700
Current liabilities	'	'	'	48,100
Total liabilities	'	'	'	$89,200

PROPERTY_AND_EQUIPMENT_Details

PROPERTY AND EQUIPMENT (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	$20,672	'	$20,672	'	$18,443
Less: accumulated depreciation	-3,700	'	-3,700	'	-3,300
Total	16,972	'	16,972	'	15,143
Depreciation expense	229	245	454	527	'
Trucks [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	1,012	'	1,012	'	1,041
Furniture And Fixtures [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	1,756	'	1,756	'	1,163
Wells And Related Equipment And Facilities [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	998	'	998	'	998
Building [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	1,469	'	1,469	'	1,469
Land [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	8,699	'	8,699	'	8,672
Exploration And Production Equipment [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	1,409	'	1,409	'	1,206
Construction In Progress [Member]	'	'	'	'	'
PROPERTY AND EQUIPMENT	'	'	'	'	'
Subtotal	$5,329	'	$5,329	'	$3,894

SHAREHOLDERS_EQUITY_Details

SHAREHOLDERS' EQUITY (Details) (USD $)	1 Months Ended	6 Months Ended		12 Months Ended
	Jul. 31, 2014	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
	Jul. 31, 2014	item	Jun. 30, 2013	item
Exchangeable shares converted into common stock	'	1,200,000	'	'
Outstanding Exchangeable Shares not exchanged	'	30,600,000	'	'
Shares of common stock issued upon exercise of stock options	'	60,300	'	'
Weighted average exercise price of stock options (in dollars per share)	'	$2.14	'	'
Proceeds from Stock Options Exercised	'	$129,000	$95,000	'
Number of mining contractors with which the entity has entered into an agreement	'	1	'	1
Number of shares required to be issued under the agreement	'	379,400	'	'
Litigation settlement liabilities	'	$1,100,000	'	'
Number of shares issued to settle part of account payables	107,400	'	'	'
Maximum [Member]	'	'	'	'
Number of shares to be issued to settle parts of expected future account payables	'	'	'	2,500,000

STOCKBASED_COMPENSATION_Detail

STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
STOCK BASED COMPENSATION	'	'	'	'
Stock option expense	$0.20	$0.30	$0.60	$0.70
Principal assumptions used in applying the Black-Scholes option pricing model for the awards	'	'	'	'
Risk-free interest rate (as a percent)	'	0.50%	'	0.50%
Volatility factor of the expected market price of common stock (as a percent)	'	66.00%	'	66.00%
Weighted-average expected life of option	'	'3 years 6 months	'	'3 years 6 months
Weighted-average grant date fair value (in dollars per share)	'	$1.01	'	$1.01
Employees And Directors [Member]	'	'	'	'
STOCK BASED COMPENSATION	'	'	'	'
Stock options granted (in shares)	0	1.7	0	1.7
Exercise price of options granted (in dollars per share)	'	$2.25	'	$2.25

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
INCOME TAXES	'	'	'	'
U.S. federal and state statutory corporate income tax rate (as a percent)	'	'	35.00%	'
Recovery of income taxes related to Argentine peso devaluation	$2.50	$7.50	$21.40	$13.70
Deferred Income Tax on Impairment of Mineral Properties	$22.50	$4.80	$22.50	$4.80

INCOME_LOSS_PER_SHARE_Details

INCOME (LOSS) PER SHARE (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
INCOME (LOSS) PER SHARE	'	'	'	'
Net loss	($104,022)	($128,681)	($86,135)	($139,663)
Weighted average number of common shares	297,164,000	297,097,000	297,162,000	296,938,000
Loss per common share	($0.35)	($0.43)	($0.29)	($0.47)
Weighted average common shares:	'	'	'	'
Diluted (in shares)	297,164,000	297,097,000	297,162,000	296,938,000
Net income (loss) per share:	'	'	'	'
Diluted (in dollars per share)	($0.35)	($0.43)	($0.29)	($0.47)
Options One [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'	'	'
Options outstanding not included in the computation of diluted weighted average shares because their effect would have been anti-dilutive (in shares)	2,000,000	3,800,000	1,400,000	1,600,000
Average exercise price of options outstanding (in dollars per share)	$5.03	$3.90	$5.96	$5.98
Options Two [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'	'	'	'
Options outstanding not included in the computation of diluted weighted average shares because their effect would have been anti-dilutive (in shares)	900,000	800,000	1,100,000	1,000,000

RELATED_PARTY_TRANSACTIONS_Det

RELATED PARTY TRANSACTIONS (Details) (Entity Affiliated With Related Party [Member], Chairman And Chief Executive Officer [Member], USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Entity Affiliated With Related Party [Member] \| Chairman And Chief Executive Officer [Member]	'	'	'	'
RELATED PARTY TRANSACTIONS	'	'	'	'
Amount of expenses incurred and paid	$18,038	$0	$38,518	$70,525

SEGMENTED_INFORMATION_Details

SEGMENTED INFORMATION (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Operating Segment Reporting	'	'	'	'	'
Gold and silver sales	$11,637	$10,459	$22,767	$23,957	'
Production costs applicable to sales	-10,900	-8,278	-19,427	-18,871	'
Mine construction costs	-217	'	-1,156	'	'
Mine development costs	-155	-98	-1,723	-569	'
Exploration costs	-2,637	-4,889	-5,317	-19,489	'
Impairment of mineral property interests and property and equipment	120,398	27,729	120,398	27,729	'
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization)	-2,438	-1,551	4,591	-1,788	'
Impairment of investment in MSC	'	-95,878	'	-95,878	'
Gain on sale of assets	18	-6,791	18	-6,791	'
Operating loss	-129,374	-139,654	-129,936	-158,021	'
Investment in Minera Santa Cruz S.A.	210,425	212,947	210,425	212,947	212,947
Mineral property interests	521,884	642,968	521,884	642,968	642,968
Total assets	796,270	923,066	796,270	923,066	923,066
Argentina Reportable Segment [Member]	'	'	'	'	'
Operating Segment Reporting	'	'	'	'	'
Exploration costs	-249	-2,017	-750	-13,479	'
Impairment of mineral property interests and property and equipment	120,398	27,729	120,398	27,729	'
Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization)	-2,438	-1,551	4,591	-1,788	'
Impairment of investment in MSC	'	-95,878	'	-95,878	'
Gain on sale of assets	'	-326	'	-326	'
Operating loss	-123,817	-129,703	-117,559	-141,615	'
Investment in Minera Santa Cruz S.A.	210,425	212,947	210,425	212,947	'
Mineral property interests	337,805	458,203	337,805	458,203	'
Total assets	551,324	674,269	551,324	674,269	'
Mexico Reportable Segment [Member]	'	'	'	'	'
Operating Segment Reporting	'	'	'	'	'
Gold and silver sales	11,637	10,459	22,767	23,957	'
Production costs applicable to sales	-10,900	-8,278	-19,427	-18,871	'
Mine construction costs	-217	'	-1,156	'	'
Mine development costs	-155	-98	-1,723	-569	'
Exploration costs	-1,488	-1,949	-2,876	-4,434	'
Operating loss	-2,150	-970	-5,198	-3,020	'
Mineral property interests	11,341	11,984	11,341	11,984	'
Total assets	59,649	54,131	59,649	54,131	'
United States Reportable Segment [Member]	'	'	'	'	'
Operating Segment Reporting	'	'	'	'	'
Exploration costs	-831	-870	-1,517	-1,450	'
Gain on sale of assets	'	-6,468	'	-6,468	'
Operating loss	-1,025	-6,110	-2,454	-7,055	'
Mineral property interests	172,738	172,781	172,738	172,781	'
Total assets	176,415	177,248	176,415	177,248	'
Corporate And Other [Member]	'	'	'	'	'
Operating Segment Reporting	'	'	'	'	'
Exploration costs	-69	-53	-174	-126	'
Gain on sale of assets	'	3	'	3	'
Operating loss	-2,382	-2,871	-4,725	-6,331	'
Total assets	$8,882	$17,418	$8,882	$17,418	'

FAIR_VALUE_ACCOUNTING_Details

FAIR VALUE ACCOUNTING (Details) (USD $)

3 Months Ended

6 Months Ended

12 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Dec. 31, 2012

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

Jun. 30, 2014

Dec. 31, 2013

item

Los Azules Copper Project [Member]

Minera Santa Cruz S A [Member]

Fair Value Measurements Recurring [Member]

Fair Value Measurements Nonrecurring [Member]

Mineral Property [Member]

Estimate Of Fair Value Fair Value Disclosure [Member]

Fair Value Inputs Level1 [Member]

Telken Tenements [Member]

Este Tenements [Member]

Piramides Tenements [Member]

Tobias Tenements [Member]

Limo Tenements [Member]

Other United States Properties [Member]

Minera Santa Cruz S A [Member]

Estimate Of Fair Value Fair Value Disclosure [Member]

Fair Value Inputs Level3 [Member]

Telken Tenements [Member]

Este Tenements [Member]

Piramides Tenements [Member]

Tobias Tenements [Member]

Limo Tenements [Member]

Los Azules Copper Project [Member]

Other United States Properties [Member]

Minera Santa Cruz S A [Member]

Telken Tenements [Member]

Este Tenements [Member]

Piramides Tenements [Member]

Tobias Tenements [Member]

Limo Tenements [Member]

Los Azules Copper Project [Member]

Other United States Properties [Member]

Minera Santa Cruz S A [Member]

Assets:

Cash and cash equivalents

$15,149,000

$24,321,000

$15,149,000

$24,321,000

Assets

15,149,000

24,321,000

15,149,000

24,321,000

310,792,000

262,490,000

26,442,000

5,337,000

9,736,000

11,645,000

23,438,000

310,792,000

9,610,000

310,792,000

262,490,000

26,442,000

5,337,000

9,736,000

11,645,000

23,438,000

310,792,000

9,610,000

Liabilities:

Accounts payable and accrued liabilities

1,093,000

177,000

1,093,000

177,000

Liabilities

1,093,000

177,000

1,093,000

177,000

Litigation settlement liabilities

1,100,000

Number of shares of common stock required to be issued as a part of settlement

379,400

Number of vendors to which shares of common stock are required to be issued as a part of settlement

Investment in MSC

210,425,000

212,947,000

210,425,000

212,947,000

210,425,000

212,947,000

273,948,000

176,282,000

Total Loss

$120,398,000

$27,729,000

$120,398,000

$27,729,000

$120,400,000

$120,398,000

$152,554,000

$13,792,000

$2,784,000

$5,079,000

$6,074,000

$19,450,000

$9,497,000

$95,878,000