Document and Entity Information Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Entity Common Stock, Shares Outstanding Indicate number of exchangeable shares outstanding of each of registrant's classes of common stock, as of latest practicable date. Exchangeable Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) Revenues [Abstract] REVENUE: Revenue Mineral Sales Gold and silver sales Revenues Total Revenue Costs and Expenses [Abstract] COSTS AND EXPENSES: Cost of Goods Sold Production costs applicable to sales Production costs applicable to sales Other Construction Costs Mine construction costs Mine construction costs Construction and Development Costs Mine development costs Mine development costs Exploration Expense, Mining Exploration costs Exploration costs Carrying Costs, Property and Exploration Rights Property holding costs General and Administrative Expense General and administrative Depreciation, Depletion and Amortization Depreciation Depreciation expense Asset Retirement Obligation, Accretion Expense Accretion of asset retirement obligation Accretion of asset retirement obligation (note 3) Accretion of liability Income (Loss) from Equity Method Investments (Income) loss on investment in Minera Santa Cruz S.A., net of amortization (note 4) (Income) loss on investment in Minera Santa Cruz S.A., net of amortization Income (loss) on investment in Minera Santa Cruz S.A. (net of amortization) Equity Method Investment, Other than Temporary Impairment Impairment of investment in MSC Impairment of investment in MSC Impairment of investment in MSC (note 4) Asset Impairment Charges Total Loss Impairment charges Impairment of mineral property interests and property and equipment (note 3) Impairment of mineral property interests and property and equipment Gain (Loss) on Disposition of Property Plant Equipment (Gain) loss on sale of assets (Gain) loss on sale of assets Gain on sale of assets Costs and Expenses Total costs and expenses Operating Income (Loss) Operating loss Operating loss Nonoperating Income (Expense) [Abstract] OTHER INCOME (EXPENSE): Investment Income, Interest Interest income Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Gain on litigation settlement Unrealized Gain (Loss) on Investments Unrealized loss on gold and silver bullion Unrealized loss on gold and silver bullion Foreign Currency Transaction Gain (Loss), before Tax Foreign currency gain (loss) Nonoperating Income (Expense) Total other income (expense) Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Income tax recovery (note 8) Income tax recovery Net Income (Loss) Available to Common Stockholders, Basic Net loss Net loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] OTHER COMPREHENSIVE INCOME (LOSS): Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Unrealized gain on available-for-sale securities, net of taxes Unrealized gain on available-for-sale securities, net of taxes Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss INCOME (LOSS) PER SHARE Net loss per share (note 9): Earnings Per Share, Basic Basic (in dollars per share) Loss per common share Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average common shares outstanding (thousands) (note 9): Weighted average common shares: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted average number of common shares Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) CONSOLIDATED BALANCE SHEETS Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Value Added Tax Receivable, Current IVA taxes receivable Inventory, Net Inventories (note 2) Inventories Other Assets, Current Other current assets Assets, Current Current assets Total current assets Mineral Properties, Net Mineral property interests (note 3) Mineral property interests Restricted Cash and Investments, Noncurrent Restrictive time deposits for reclamation bonding (note 3) Cash bonding for mineral properties in the United States Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment in MSC, ending balance Investment in MSC, beginning balance Investment in MSC Investment in Minera Santa Cruz S.A. (note 4) Investment in Minera Santa Cruz S.A. Property, Plant and Equipment, Net Property and equipment, net (note 5) Total Other Assets, Noncurrent Other assets Assets Total assets TOTAL ASSETS Liabilities and Equity [Abstract] LIABILITIES & SHAREHOLDERS' EQUITY Liabilities, Current [Abstract] Current liabilities: Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Asset Retirement Obligation, Current Current portion of asset retirement obligation (note 3) Current portion of the asset retirement obligation Liabilities, Current Current liabilities Total current liabilities Asset Retirement Obligations, Noncurrent Asset retirement obligation, less current portion (note 3) Deferred Tax Liabilities, Net, Noncurrent Deferred income tax liability (note 8) Other Liabilities, Noncurrent Other liabilities Liabilities Total liabilities Total liabilities Stockholders' Equity Attributable to Parent [Abstract] Shareholders' equity: Common Stock, Value, Issued 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 Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Accumulated other comprehensive loss Stockholders' Equity Attributable to Parent Balance Balance Total shareholders' equity Liabilities and Equity TOTAL LIABILITIES & SHAREHOLDERS' EQUITY Common Stock, No Par Value Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common, shares issued Common Stock, Shares, Outstanding Common, shares outstanding This element represents total number of exchangeable common shares that have been issued to shareholders. Exchangeable Common Stock, Shares, Issued Exchangeable, shares issued This element represents total number of shares of exchangeable common stock held by shareholders. Exchangeable Common Stock, Shares, Outstanding Exchangeable, shares outstanding CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY Statement [Table] Equity Components [Axis] Common Stock [Member] Common Stock [Member] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Income [Member] Retained Earnings [Member] Retained Earnings [Member] Statement [Line Items] Statement SHAREHOLDERS EQUITY Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Shareholders' Equity Shares, Issued Balance (in shares) Balance (in shares) Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options (in shares) Shares of common stock issued upon exercise of stock options Represents the value of stock issued pursuant to settlement of litigation during the period. Stock Issued During Period Value Issued for Litigation Settlement Shares issued for litigation settlement Represents the number of shares of stock issued during the period pursuant to settlement of litigation. Stock Issued During Period Shares Issued for Litigation Settlement Shares issued for litigation settlement (in shares) Stock Issued During Period, Value, Purchase of Assets Shares issued for Mexico mining concessions Stock Issued During Period, Shares, Purchase of Assets Shares issued for Mexico mining concessions (in shares) CONSOLIDATED STATEMENTS OF CASH FLOWS Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows from operating activities: Payments to Suppliers and Employees Cash paid to suppliers and employees Proceeds from Customers Cash received from gold and silver sales Proceeds from Dividends Received Dividends received from Minera Santa Cruz S.A. Dividends received Represents the amount of proceeds received from sale of gold and silver bullion as a part of operating activities. Proceeds from sale of gold and silver bullion Proceeds from sale of gold and silver bullion Proceeds from Interest Received Interest received Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash used in operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows from investing activities: Payments to Acquire Mining Assets Acquisition of mineral property interests Payments to Acquire Property, Plant, and Equipment Additions to property and equipment Increase (Decrease) in Restricted Cash Decrease in restrictive time deposits for reclamation bonding Reduction in cash bonding requirements Proceeds from Sale of Property, Plant, and Equipment Proceeds from disposal of property and equipment Net Cash Provided by (Used in) Investing Activities, Continuing Operations Cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows from financing activities: Proceeds from Stock Options Exercised Exercise of stock options Net Cash Provided by (Used in) Financing Activities, Continuing Operations Cash provided by financing activities Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Effect of exchange rate change on cash and cash equivalents Net Cash Provided by (Used in) Continuing Operations Decrease in cash and cash equivalents Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Reconciliation of net loss to cash used in operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) from operating activities: Deferred Income Tax Expense (Benefit) Income tax recovery This element represents the increase in the fair value of the shares issued as part of the litigation settlement. Gain on Litigation Settlement Gain on litigation settlement Stock or Unit Option Plan Expense Stock-based compensation Represents the amount of amortization expense related to the mineral property interests and capitalized asset retirement costs. Mineral Property Interests and Asset Retirement Obligations Amortization Amortization of mineral property interests and asset retirement obligations Foreign Currency Transaction Gain (Loss), Unrealized Foreign exchange loss Increase (Decrease) in Operating Capital [Abstract] Change in non-cash working capital items: Increase (Decrease) in Other Operating Assets Increase in other assets related to operations Increase (Decrease) in Operating Liabilities Increase (decrease) in liabilities related to operations Represents information pertaining to the dividend receivable on noncash working capital items. Non Cash Working Capital Items Dividend Receivable Dividend receivable from Minera Santa Cruz S.A NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES INVENTORIES Inventory Disclosure [Text Block] INVENTORIES No definition available. MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS Description of the mineral property interests and the asset retirement obligations associated with long-lived assets. Mineral property interests are carried at acquisition cost, net of write-offs and impairments. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. This element may be used for all the disclosures related to asset retirement obligations. MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATION MINERAL PROPERTY INTERESTS AND ASSET RETIREMENT OBLIGATIONS INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE Equity Method Investments and Joint Ventures Disclosure [Text Block] INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] PROPERTY AND EQUIPMENT SHAREHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] SHAREHOLDERS' EQUITY STOCK-BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] STOCK-BASED COMPENSATION INCOME TAXES Income Tax Disclosure [Text Block] INCOME TAXES Earnings Per Share [Text Block] INCOME (LOSS) PER SHARE RELATED PARTY TRANSACTIONS Related Party Transactions Disclosure [Text Block] RELATED PARTY TRANSACTIONS SEGMENTED INFORMATION Segment Reporting Disclosure [Text Block] SEGMENTED INFORMATION FAIR VALUE ACCOUNTING Fair Value Disclosures [Text Block] FAIR VALUE ACCOUNTING Schedule of Inventory, Current [Table Text Block] Schedule of inventories Tabular disclosure of impairment charges on mineral properties held by the entity. Schedule of Impairment Charges on Mineral Properties [Table Text Block] Schedule of impairment charges on mineral property Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of reconciliation of asset retirement obligations Equity Method Investments [Table Text Block] Schedule of change in the entity's investment in MSC Tabular disclosure of MSC's financial information from operations. Equity Method Investment, Summarized Financial Information, Income Statement [Table Text Block] Summary of MSC's financial information from operations Property, Plant and Equipment [Table Text Block] Schedule of property and equipment Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] 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 Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of reconciliation of the basic and diluted weighted average number of common shares and the computations for basic income (loss) per share Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of the financial information relating to the Company's segments Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Schedule of assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy Fair Value Measurements, Nonrecurring [Table Text Block] Schedule of assets measured at fair value on a nonrecurring basis after initial recognition Schedule of Business Acquisitions, by Acquisition [Table] Investment, Name [Axis] Equity Method Investee Name [Domain] Equity Method Investee Name [Domain] Represents information pertaining to Minera Santa Cruz S.A., owner of the San Jose Silver-Gold Mine in Santa Cruz, Argentina. Minera Santa Cruz S A [Member] Minera Santa Cruz S A [Member] Business Acquisition [Line Items] THE COMPANY Equity Method Investment, Ownership Percentage Ownership interest (as a percent) Represents the carrying amount, net of reserves and adjustments, as of the balance sheet date, of ore on leach pads. Inventory Ore on Leach Pads Net of Reserves Ore on leach pads Inventory, Work in Process, Net of Reserves In-process inventory Carrying amount, net of reserves and adjustments, as of the balance sheet date, of ore stockpiled. Inventory Ore Stockpiles Net of Reserves Stockpiles Represents the carrying amount, net of reserves and adjustments, as of the balance sheet date, of precious metals. Inventory Precious Metals Net of Reserves Precious metals Inventory, Raw Materials and Supplies, Net of Reserves Materials and supplies Disclosure of information pertaining to mineral property interest. Mineral Property Interest [Table] Lists down the properties of the entity which are part of mineral property. Mineral Property, Name [Axis] Provides names of properties of the entity which are part of mineral property interest. Mineral Property Name [Domain] Mineral Property Name [Domain] Represents the Tonkin property in Nevada and the El Gallo 1 mine portion of the El Gallo Complex in Mexico which is a part of mineral property and is subject to asset retirement obligations. Tonkin Complex And El Gallo One Mine Complex [Member] Tonkin Complex And El Gallo One Mine Complex [Member] Represents the Tonkin Complex property which is a part of mineral property and is subject to asset retirement obligations. Tonkin Complex [Member] Tonkin Complex [Member] Represents the El Gallo 1 Mine property forming part of mineral property. El Gallo Complex [Member] El Gallo Complex [Member] Represents information pertaining to Telken Tenements property, forming a part of mineral property. Telken Tenements [Member] Telken Tenements [Member] Represents information pertaining to Este Tenements property, forming a part of mineral property. Este Tenements [Member] Este Tenements [Member] Represents information pertaining to Piramides Tenements property, forming a part of mineral property. Piramides Tenements [Member] Piramides Tenements [Member] Represents information pertaining to Tobias Tenements property, forming a part of mineral property. Tobias Tenements [Member] Tobias Tenements [Member] Represents the other United States properties forming part of mineral property. Other United States Properties [Member] Other United States Properties [Member] Represents the exploration properties in Santa Cruz, Argentina forming part of mineral property. Exploration Properties Located In Santa Cruz Province Argentina [Member] Exploration Properties Located In Santa Cruz Province Argentina [Member] Represents the Los Azules Copper Project property forming part of mineral property. Los Azules Copper Project [Member] Los Azules Copper Project [Member] Segments [Axis] Segment [Domain] Segment [Domain] Represents the Argentina reportable segment of the entity. Argentina Reportable Segment [Member] Argentina Reportable Segment [Member] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Mineral Property Interests [Line Items] Represents the number of properties of the entity which are subject to reclamation obligations. Number of Properties Subject to Reclamation Obligations Number of most significant properties subject to reclamation obligations Accrued Reclamation Costs, Current Undiscounted estimated reclamation costs Represents the percentage of annual fees on the value of the surety bonds. Surety Bonds Annual Fees Percentage Percentage of annual fees on surety bonds Represents the percentage of upfront deposit on the value of the surety bonds. Surety Bonds Upfront Deposit Percentage Percentage of upfront deposit on surety bonds Represents the amount of amortization expense related to the capitalized asset retirement costs. Asset Retirement Obligations Amortization Amortization of capitalized asset retirement costs Represents the amount of deferred income tax recovery on impairment of mineral properties. Deferred Income Tax on Impairment of Mineral Properties Recovery of deferred income tax Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] Changes in the asset retirement obligations Asset Retirement Obligation Asset retirement obligation liability, ending balance Asset retirement obligation liability, beginning balance Asset Retirement Obligation, Liabilities Settled Settlements Asset Retirement Obligation, Revision of Estimate Adjustment reflecting updated estimates Schedule of Equity Method Investments [Table] Type of Arrangement and Non-arrangement Transactions [Axis] Arrangements And Nonarrangement Transactions [Member] Arrangements And Nonarrangement Transactions [Member] Represents information pertaining to the vend-in agreement. Vend In Agreement [Member] Vend In Agreement [Member] Schedule of Equity Method Investments [Line Items] INVESTMENT IN MINERA SANTA CRUZ S.A. ("MSC") - SAN JOSE MINE Represents the overstatement of after-tax net income, relating to the prior year, reported by an equity method investment of the entity which was deemed an immaterial error. Equity Method Investment Overstatement of Net Income after Tax Equity method investment, overstatement of income from prior year recorded in current period Represents the overstatement of the entity's proportionate share of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied related to the prior year. Income (Loss) from Equity Method Investments Overstatement Entity's share of income in investee, understatement of income from prior year recorded in current period Represents the amount of the mineral property interests transferred, net of tax. Mineral Property Interests Transfer Net of Tax Contribution of Santa Cruz exploration properties, net of tax Carrying value of properties, net of tax Deferred Tax Liabilities, Investments Deferred tax liability related to mineral properties transferred A roll forward is a reconciliation of a concept from the beginning of a period to the end of the period. Equity Method Investment [Roll Forward] Change in the investment in MSC This item represents the entity's proportionate share for the period of the net income (loss) of its investee, before amortization, to which the equity method of accounting is applied. Income (loss) from Equity Method Investments before Amortization Net (loss) income Income from equity investment Represents the amortization of fair value increments from the equity method investments. Amortization of Fair Value Increments from Equity Method Investments Amortization of fair value increments Proceeds from Equity Method Investment, Dividends or Distributions Dividend distribution Represents the revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity expressed as percentage. Equity Method Investment, Summarized Financial Information, Revenue Percentage Net sales percentage Equity Method Investment, Summarized Financial Information, Revenue Net sales Equity Method Investment, Summarized Financial Information, Cost of Sales Production costs applicable to sales Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations before Extraordinary Items (Loss) income from operations before extraordinary items Equity Method Investment, Summarized Financial Information, Net Income (Loss) Net (loss) income Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property Plant And Equipment Type [Domain] Property Plant And Equipment Type [Domain] Trucks [Member] Trucks [Member] Furniture And Fixtures [Member] Furniture And Fixtures [Member] Wells And Related Equipment And Facilities [Member] Wells And Related Equipment And Facilities [Member] Building [Member] Building [Member] Land [Member] Land [Member] Exploration And Production Equipment [Member] Exploration And Production Equipment [Member] Construction In Progress [Member] Construction In Progress [Member] Property, Plant and Equipment [Line Items] PROPERTY AND EQUIPMENT Property, Plant and Equipment, Gross Subtotal Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation Range [Axis] Range [Member] Range [Member] Maximum [Member] Maximum [Member] Conversion of Stock, Shares Converted Exchangeable shares converted into common stock Common Stock, Other Shares, Outstanding Outstanding Exchangeable Shares not exchanged Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price of stock options (in dollars per share) Represents the number of mining contractors with which the entity has entered into an agreement. Number of Mining Contractors with which Entity has Entered into Agreement Number of mining contractors with which the entity has entered into an agreement Number of vendors to which shares of common stock are required to be issued as a part of settlement Represents the number of shares to be issued to settle parts of expected future account payable of the entity. Number of Shares to be Issued to Settle Parts of Expected Future Account Payable Number of shares to be issued to settle parts of expected future account payables Represents the number of shares agreed to be issued by the entity under the agreement. Number of Shares Agreed to be Issued under Agreement Number of shares required to be issued under the agreement Number of shares of common stock required to be issued as a part of settlement Represents the fair value portion of litigation settlement liabilities. Litigation Settlement Liabilities Fair Value Disclosure Litigation settlement liabilities Number of shares issued to settle part of accounts payable Number of shares issued to settle part of account payables Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Related Party [Axis] Related Party [Domain] Related Party [Domain] Represents the employees and directors responsible for certain day-to-day activities of the entity. Employees And Directors [Member] Employees And Directors [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] STOCK BASED COMPENSATION Allocated Share-based Compensation Expense Stock option expense Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Stock options granted (in shares) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercise price of options granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Principal assumptions used in applying the Black-Scholes option pricing model for the awards Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Volatility factor of the expected market price of common stock (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted-average expected life of option Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-average grant date fair value (in dollars per share) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent U.S. federal and state statutory corporate income tax rate (as a percent) Represents the income tax expense (benefit) related to fluctuations in the foreign exchange rate between the Argentine peso and the U.S. dollar. Income Tax Expense Benefit Resulting From Fluctuations In Foreign Exchange Rate Recovery of income taxes related to Argentine peso devaluation Earnings Per Share, Basic and Diluted [Abstract] Net income (loss) per share: Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities Name [Domain] Antidilutive Securities Name [Domain] Represents information pertaining to options to purchase shares of common stock. Options One [Member] Options One [Member] Represents information pertaining to other options. Options Two [Member] Options Two [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Options outstanding not included in the computation of diluted weighted average shares because their effect would have been anti-dilutive (in shares) Represents the weighted average exercise price of outstanding options excluded from the computation of diluted weighted average shares. Antidilutive Securities Excluded from Computation of Earnings Per Share Weighted Average Exercise Price Average exercise price of options outstanding (in dollars per share) Schedule of Related Party Transactions, by Related Party [Table] Counterparty Name [Axis] Repurchase Agreement Counterparty Name [Domain] Repurchase Agreement Counterparty Name [Domain] Information regarding an entity that is affiliated with a related party. Entity Affiliated With Related Party [Member] Entity Affiliated With Related Party [Member] Represents the Chairman of the entity who is Chief Executive Officer also. Chairman And Chief Executive Officer [Member] Chairman And Chief Executive Officer [Member] Related Party Transaction [Line Items] RELATED PARTY TRANSACTIONS Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party Amount of expenses incurred and paid Schedule of Segment Reporting Information, by Segment [Table] Represents the Mexico reportable segment of the entity. Mexico Reportable Segment [Member] Mexico Reportable Segment [Member] Represents the United States reportable segment of the entity. United States Reportable Segment [Member] United States Reportable Segment [Member] Corporate And Other [Member] Corporate And Other [Member] Segment Reporting Information [Line Items] Operating Segment Reporting Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value Measurement Frequency [Domain] Fair Value Measurement Frequency [Domain] Fair Value Measurements Recurring [Member] Fair Value Measurements Recurring [Member] Fair Value Measurements Nonrecurring [Member] Fair Value Measurements Nonrecurring [Member] Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Measurements Fair Value Hierarchy [Domain] Estimate Of Fair Value Fair Value Disclosure [Member] Estimate Of Fair Value Fair Value Disclosure [Member] Fair Value Inputs Level1 [Member] Fair Value Inputs Level1 [Member] Fair Value Inputs Level3 [Member] Fair Value Inputs Level3 [Member] Represents information pertaining to mineral property. Mineral Property [Member] Mineral Property [Member] Represents information pertaining to Limo Tenements property, forming a part of mineral property. Limo Tenements [Member] Limo Tenements [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] FAIR VALUE ACCOUNTING Assets, Fair Value Disclosure [Abstract] Assets: Cash and Cash Equivalents, Fair Value Disclosure Cash and cash equivalents Assets, Fair Value Disclosure Assets Liabilities, Fair Value Disclosure [Abstract] Liabilities: Accounts Payable and Accrued Liabilities, Fair Value Disclosure Accounts payable and accrued liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Liabilities Equity Component [Domain] Equity Component [Domain] Scenario [Axis] Scenario Unspecified [Domain] Scenario Unspecified [Domain] Scenario Forecast [Member] Scenario Forecast [Member] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Represents information pertaining to current period value excluding fair value increments and impairment charge. Current Period Values Excluding Fair Value Increments And Impairment Charge [Member] Current Period Values Excluding Fair Value Increments And Impairment Charge [Member]