Document And Entity Information [Abstract] Document And Entity Information [Abstract] Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Current Fiscal Year End Date Entity Registrant Name Entity Central Index Key Entity Filer Category Entity Common Stock, Shares Outstanding Condensed Consolidated Balance Sheets [Abstract] Assets: Cash and cash equivalents Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value, Total Inventories - Note 3 Inventory, net Inventories - Note 3 Inventory, Ore Stockpiles on Leach Pads Ore on leach pads (in thousands), current Ore on leach pads, current - Note 4 Prepaid Expense And Other Assets Current Prepaids and other - Note 5 Prepaid Expense and Other Assets, Current, Total Deferred tax asset, current Deferred Tax Assets, Net, Current, Ending Balance Deferred Tax Assets, Net, Current, Beginning Balance Deferred tax asset, current Net current deferred tax assets Net current deferred tax assets Current assets Current assets Restricted cash - Note 5 Balance, end of period Balance, beginning of year Restricted cash - Note 6 Restricted cash - Note 7 Inventory, Ore Stockpiles On Leach Pads, Noncurrent Inventory, Ore Stockpiles On Leach Pads, Noncurrent Ore on leach pads, non-current - Note 4 Plant and equipment, net - Note 6 Plant and equipment, net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Plant and equipment, net - Note 5 Plant and equipment, net Plant and equipment, net - Note 7 Mine development costs - noncurrent Mine Development Costs Noncurrent Balance, end of year Balance, beginning of year Mine development - Note 6 Mine development - Note 8 Other Assets, Noncurrent Other assets, non-current Other Assets, Noncurrent, Total Other assets, non-current - Note 5 Mineral properties - Note 9 Balance, end of period Balance, beginning of year Mineral properties - Note 9 Mineral properties - Note 9 Mineral properties Deferred tax asset, non-current Deferred tax asset, non-current Net non-current deferred tax assets Total assets Total assets Liabilities: Accounts payable Accounts Payable, Current, Total Due to Related Parties, Current Due to Related Parties, Current, Total Amounts due to related parties - Note 18 Other Liabilities, Current . Other liabilities, current Total accrued liabilities and other Other liabilities, current - Note 10 Capital lease obligations, current - Note 10 Less: current portion of net minimum lease payments Less: current portion Capital lease obligations, current - Note 11 Asset retirement obligation, current portion - Note 8 Less: current portion Asset Retirement Obligation, Current, Ending Balance Asset Retirement Obligation, Current, Beginning Balance Asset retirement obligation, current - Note 11 Asset retirement obligation, current - Note 12 Current liabilities Current liabilities Capital lease obligations, long-term portion - Note 10 Non-current portion of net minimum lease payments Non-current portion of net minimum lease payments Capital lease obligations, non-current - Note 11 Asset retirement obligation, long-term portion - Note 8 Non-current portion Asset Retirement Obligations, Noncurrent, Ending Balance Asset retirement obligation, non-current - Note 12 Non-current portion Long-term portion Other Accrued Liabilities, Noncurrent Other liabilities, non-current - Note 13 Other accrued liabilities Total liabilities Total liabilities Commitments and Contingencies - Note 20 Commitments and Contingencies - Note 21 Shareholders' Equity: Common stock - Note 12 ($0.001 par value, 100,000,000 shares authorized, shares issued and outstanding: 88,884,656 at September 30, 2010 and 73,837,267 at December 31, 2009) Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock, $0.001 par value - Note 14 200,000,000 shares authorized, shares issued and outstanding: 89,399,055 at March 31, 2012 and 89,646,988 at December 31, 2011 Common Stock, Value, Issued, Total Additional paid-in-capital Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Accumulated deficit Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Balance Balance Balance Total shareholders' equity Total liabilities and shareholders' equity Total liabilities and shareholders' equity Common stock, par value Common stock, par value Common stock, shares authorized Authorized share capital of common stock under stock option plans Common stock, shares issued Balance, shares Balance, shares Common stock, shares issued Common Stock, Shares, Issued, Total Shares issued in public offering, Shares Common stock, shares outstanding Balance, shares Balance, shares Common stock outstanding Outstanding, end of period Condensed Consolidated Statements Of Income [Abstract] Revenue Mineral Sales Revenue Net sales Total Revenue - Note 15 Operating expenses: Cost of sales (excludes depreciation, amortization, and accretion) Production costs Cost of Revenue, Total Production costs Depreciation and amortization Depreciation, Depletion and Amortization, Total Total cost of sales Total cost of sales Total cost of sales Exploration and land holding costs Exploration, development, and land holding costs Asset Retirement Obligation, Accretion Expense Accretion Accretion - Note 13 Corporate general and administrative General and Administrative Expense, Total Operating Income (Loss) Income (loss) from operations Income from operations Interest income Interest expense Interest expense Interest expense Interest Expense, Total Other income (expense) Other income - Note 20 Other income Other Nonoperating Income (Expense), Total Other income (expense) Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Cumulative Effects of Changes in Accounting Principles, Noncontrolling Interest Income (loss) before taxes Income before income taxes Income tax benefit (expense) - Note 13 Income tax expense - Note 16 Total provision (benefit) for income taxes Net income (loss) Net income available to common shareholders: Net income Net income Net income available to common shareholders Earnings Per Share [Abstract] Earnings per share: Earnings per share: Earnings Per Share, Basic Basic earnings (loss) per share Basic, Earnings per share Earnings Per Share, Basic, Total Basic - Note 17 Earnings Per Share Diluted Diluted - Note 17 Diluted, Earnings per share Earnings Per Share, Diluted, Total Diluted earnings (loss) per share Condensed Consolidated Statements Of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net income for the period to net cash provided by operating activities: Adjustments to reconcile net income for the period to net cash provided by operating activities: Stock-based compensation Stock-based compensation expense Share-based Compensation, Total Deferred Income Tax Expense (Benefit) Deferred taxes Deferred Income Tax Expense (Benefit), Total Deferred taxes Other Noncash Income (Expense) Other non-cash items Other Noncash Income (Expense), Total Change in operating assets and liabilities: Increase Decrease In Inventories Inventories Inventories Increase (Decrease) in Inventories, Total Increase decrease in ore on leach pads Increase Decrease In Ore On Leach Pads Ore on leach pads Ore on leach pads Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaids and other Prepaids and other Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total Increase (Decrease) in Accounts Payable Accounts payable and amounts due to related parties Increase (Decrease) in Accounts Payable, Total Accounts payable Increase (Decrease) in Asset Retirement Obligations Asset retirement obligation Asset retirement obligation Increase (Decrease) in Accrued Liabilities Other liabilities Increase (Decrease) in Accrued Liabilities, Total Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net cash provided by operating activities Cash flows from investing activities: Additions to plant and equipment Additions to plant and equipment Payments to Acquire Property, Plant, and Equipment, Total Payments made for additions to mine development costs. Payments Made For Additions To Mine Development Costs Additions to mine development Additions to mine development costs Additions to mine development costs Increase (Decrease) in Deposits Outstanding Deposits for plant and mobile equipment Increase in restricted cash (Increase) decrease in restricted cash Increase in restricted cash Increase (Decrease) in Restricted Cash, Total Payments for (Proceeds from) Other Investing Activities Proceeds from other investing activities Proceeds from other investing activities Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Cash flows provided by financing activities: Cash flows from financing activities: Proceeds on issuance of common stock Repayments of principal on capital lease agreements Repayments of principal on capital lease agreements Net Cash Provided by (Used in) Financing Activities Net cash used in financing activities Cash and Cash Equivalents, Period Increase (Decrease) Net decrease in cash and cash equivalents Supplemental cash flow disclosures: Cash paid for interest Interest Paid, Net, Total Income Taxes Paid Cash paid for taxes Non-cash financing and investing activities: Mining equipment acquired by capital lease Mining equipment acquired by capital lease Noncash or Part Noncash Acquisition, Fixed Assets Acquired Mining equipment acquired by accounts payable additions Accounts payable reduction through capital lease Condensed Consolidated Statements Of Shareholders' Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Parent [Member] Common Stock [Member] Common Stock [Member] Additional Paid In Capital [Member] Additional Paid-In Capital [Member] Retained Earnings [Member] Accumulated Deficit [Member] Shares issued under stock option plans Shares issued under stock option plans, shares Exercised, Number of Stock Options Exercised, Number Stock options exercised Exercised, Number of Restricted Stock Units Stock Issued During Period, Value, Share-based Compensation Stock-based compensation and RSU plan share issuances Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures, Total Stock-based compensation and RSU plan share issuances, shares Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total Adjustment for Over-issuance of Stock, Value Adjustment for Over-issuance of Stock, Value Adjustment for over-issuance by stock plan administrator Correction of reporting of issuance by RSU stock plan administrator Adjustment for Over-issuance of Stock, Shares Adjustment for Over-issuance of Stock, Shares Correction of reporting of issuance by RSU stock plan administrator, shares Basis Of Presentation [Abstract] Organization Consolidation And Presentation Of Financial Statements Disclosure Basis Of Presentation Accounting Pronouncements [Abstract] Accounting Changes and Error Corrections [Text Block] Accounting Pronouncements Inventories [Abstract] Inventory Disclosure Text Block Inventories Ore On Leach Pads [Abstract] Ore On Leach Pads [Abstract] Disclosures about ore on leach pads - current. Ore On Leach Pads Text Block Ore On Leach Pads Prepaids And Other Assets [Abstract] Prepaid And Other Assets [Text Block] Prepaid And Other Assets [Text Block] Prepaids And Other Assets Restricted Cash [Abstract] Restricted Assets Disclosure [Text Block] Restricted Cash Plant And Equipment, Net [Abstract] Property Plant And Equipment Disclosure Text Block Plant And Equipment, Net Mine Development [Abstract] Mine Development Costs Disclosures around mine development costs - noncurrent. Mine Development Costs Text Block Mine Development Mineral Properties [Abstract] Disclosures around mineral properties, net of adjustments and depreciation. Mineral Properties Text Block Mineral Properties Other Liabilities, Current [Abstract] Other Liabilities Disclosure [Text Block] Other Liabilities, Current Other Liabilities, Current Revolving Credit Facility And Lease Obligations [Abstract] Debt and Capital Leases Disclosures [Text Block] Revolving Credit Facility And Lease Obligations Asset Retirement Obligation [Abstract] Asset Retirement Obligation Disclosure Text Block Asset Retirement Obligation Other Liabilities, Non-Current [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Other Liabilities, Non-Current Shareholders' Equity [Abstract] Stockholders Equity Note Disclosure Text Block Shareholders' Equity Revenue [Abstract] Revenue: Revenue Mineral Sales Disclosure [Text Block] Revenue Mineral Sales Disclosure [Text Block] Revenue Income Tax Expense [Abstract] Income Tax Disclosure Text Block Income Taxes Income Tax Expense Earnings Per Share Text Block Earnings Per Share Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] Related Party Transactions Segment Information [Abstract] Segment Reporting Disclosure Text Block Segment Information Fair Value Measurements [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Commitments And Contingencies [Abstract] Commitments And Contingencies Disclosure Text Block Commitments And Contingencies Contingencies And Commitments Reclassifications Policy [Text Block] Reclassifications Policy [Text Block] Reclassifications Schedule of Inventory, Current [Table Text Block] Components Of Inventories Summary Of The Estimated Recoverable Ounces In In-Process Inventory And Precious Metals Inventory [Table Text Block] Summary Of The Estimated Recoverable Ounces In In-Process Inventory And Precious Metals Inventory [Table Text Block] Summary Of The Estimated Recoverable Gold Ounces In In-Process Inventory And Precious Metals Inventory Schedule of Ore on Leach Pads and Estimated Recoverable Gold Ounces [Table Text Block] Schedule of Ore on Leach Pads and Estimated Recoverable Gold Ounces [Table Text Block] Summary Of Ore On Leach Pads And Estimated Recoverable Gold Ounces Prepaid And Other Assets [Table Text Block] Prepaid And Other Assets [Table Text Block] Components Of Prepaids And Other And Other Assets, Non-Current Schedule of Restricted Cash Balances and Changes During the Periods [Table Text Block] Schedule of Restricted Cash Balances and Changes During the Periods [Table Text Block] Changes In Restricted Cash Property, Plant and Equipment [Table Text Block] Components Of Plant And Equipment Schedule of Changes in Mine Development Costs [Table Text Block] Schedule of Changes in Mine Development Costs [Table Text Block] Changes In Mine Development Costs Schedule of Mineral Properties (Table Text Block) Schedule of Mineral Properties (Table Text Block) Changes In Mineral Properties Schedule of Components of Other Current Liabilities [Table Text Block] Schedule Of Components Of Other Current Liabilities [Table Text Block] Components Of Other Current Liabilities Schedule Of Amounts Recognized In Balance Sheet Schedule of Capital Leased Asssets [Table Text Block] Summary Of Capital Lease Assets Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Summary Of Future Minimum Lease Payments Under Capital Leases Schedule of Change in Asset Retirement Obligation [Table Text Block] Summary Of Changes To Asset Retirement Obligation Schedule of Stock by Class [Table Text Block] Summary Of Company's DPUs Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain] Special Stock Option Plan [Member] Special Stock Option Plan [Member] Special Stock Option Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Schedule Of Changes To Stock Option Plan [Table Text Block] Changes In Stock Option Plan Schedule Of Changes To Restricted Share Plan [Table Text Block] Changes To Restricted Share Unit Plan Revenue Mineral Sales [Table Text Block] Revenue Mineral Sales [Table Text Block] Summary Of Revenue From Gold And Silver Sales Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Computation Of Basic And Diluted Earnings Per Share Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule Of Segment Reporting Information, By Segment Schedule Of Fair Value, Assets And Liabilities Measured On Recurring Basis Inventory, Work in Process In-process Inventory, Finished Goods Inventory, Finished Goods, Total Precious metals Inventory, Raw Materials and Supplies Materials and supplies Inventory, Raw Materials and Supplies, Total Inventory Work In Process, Ounces Inventory Work In Process, Ounces In-process Inventory Finished Goods, Ounces Inventory Finished Goods, Ounces Precious metals Inventory Net, Ounces Inventory Net, Ounces Inventory net, ounces Estimated Recoverable Gold Ounces Estimated Recoverable Gold Ounces Estimated recoverable ounces, current Inventory ore stockpiles material noncurrent Inventory Ore Stockpiles Material Noncurrent Ore on leach pads (in thousands), non-current Estimated recoverable ounces noncurrent Estimated Recoverable Ounces Noncurrent Estimated recoverable ounces, non-current Prepaid Expense, Current Prepaids Prepaid Expense, Current, Total State claim fee receivable State claim fee receivable Deposits Assets, Current Deposits Other Assets, Current Other Deposits Assets, Noncurrent Deposits Noncurrent Marketable Securities, Equity Securities Marketable equity securities Marketable Securities, Equity Securities, Total Reclamation policy premium Reclamation policy premium Additions to Restricted Cash Additions to Restricted Cash Additions Interest on Restricted Cash Interest on Restricted Cash Interest Increase (Decrease) In Collaterals Increase (Decrease) In Collaterals Increase in surety bonds Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment by Type [Axis] Property Plant And Equipment Type [Domain] Property, Plant and Equipment, Type [Domain] Leach pad expansions [Member] Leach Pad Expansions [Member] Leach Pad Expansion [Member] Process Improvements [Member] Process Improvements [Member] Processing Improvements [Member] Power And Electrical Equipment [Member] Power And Electrical Equipment [Member] Power And Electrical Equipment [Member] Other Capital Items [Member] Other Capital Items [Member] Other Capital Items [Member] ERP Planning System [Member] Erp Planning System [Member] ERP Planning System [Member] Property, Plant and Equipment [Line Items] Construction in Progress, Gross Construction in progress and other Property, Plant and Equipment, Useful Life, Minimum Depreciable life, minimum (years) Depreciable useful lives, minimum (years) Property, Plant and Equipment, Useful Life, Maximum Depreciable life, maximum (years) Depreciable useful lives, maximum (years) Equipment [Member] Mine Equipment [Member] Buildings and Leasehold Improvements [Member] Buildings And Leasehold Improvements [Member] Buildings And Leasehold Improvements [Member] Leach Pads [Member] Leach Pads [Member] Leach Pads [Member] Furniture Fixtures and Office Equipment [Member] Furniture Fixtures And Office Equipment [Member] Furniture, Fixtures, And Office Equipment [Member] Vehicles [Member] Vehicles [Member] Property, Plant and Equipment, Depreciation Methods Depreciable method Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Property, Plant and Equipment, Gross, Total Plant and equipment, gross Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less: accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total Reserve verification drilling and assaying Reserve Verification Drilling And Assaying Reserve verification drilling and assaying Condemnation drilling and assaying Condemnation Drilling And Assaying Condemnation drilling and assaying Pre-production stripping costs Pre Production Stripping Costs Pre-production stripping costs Environmental Impact Statement Study and Engineering Costs Environmental Impact Statement Study and Engineering Costs EIS and engineering costs Amortization of Mine Development Costs Amortization of Mine Development Costs Amortization Amortization Pits In Production Phase Pits In Production Phase Pits in production phase Finite-Lived Intangible Assets, Amortization Expense Amortization - royalty rights Amortization Amortization - royalty rights Other Liabilities, Current [Table] Other Liabilities, Current [Table] Other Liabilities Current [Axis] Other Liabilities Current [Axis] Other Liabilities Current [Domain] Other Liabilities Current [Domain] Other Liabilities Current [Domain] Federal Income Taxes Payable [Member] Federal Income Taxes Payable [Member] Federal Income Taxes Payable [Member] Accrued compensation [Member] Accrued Compensation [Member] Accrued Compensation [Member] Other Accrued Liabilities [Member] Other Accrued Liabilities [Member] Other [Member] Other Liabilities Current [Line Items] Other Liabilities Current [Line Items] Schedule of Capital Leased Asssets [Table] Capital Leases, Type [Axis]. Capital Leases, Type [Axis] Capital Leases, Type [Domain]. Capital Leases Type [Domain] Capital Leases, Type [Domain] Mine Equipment [Member]. Mine Equipment [Member] Mining Equipment [Member] Capital Leased Assets [Line Items] Line of Credit Facility, Maximum Borrowing Capacity Credit agreement Secured Debt, Total Revolving credit agreement Line of Credit Facility, Expiration Date Credit facility maturity date Line of Credit Facility, Interest Rate Description Interest rate on drawdowns Interest rate on drawdowns Loan Processing Fee Loan origination fees Capital Leased Assets, Number of Units Number of capital leases Capital Lease Obligation Term Capital Lease Obligation Term Terms in months Term of capital lease obligation, months Capital Leases of Lessee, Contingent Rentals, Basis Spread on Variable Rate Weighted average implicit interest rate Interest Costs Incurred, Capitalized Interest expense capitalized Interest Costs Incurred, Capitalized, Total Capital Leased Assets, Gross Mine equipment Capital Leased Assets, Gross, Total Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation Less: accumulated depreciation Capital Leases, Balance Sheet, Assets by Major Class, Net Net assets under capital leases Capital Leases, Future Minimum Payments Due, Current 2012 Capital Leases, Future Minimum Payments Due in Two Years 2013 Capital Leases, Future Minimum Payments Due in Three Years 2014 Capital Leases, Future Minimum Payments Due in Four Years 2015 Capital Leases, Future Minimum Payments Due in Five Years 2016 Capital Leases, Future Minimum Payments Due Thereafter 2017 Capital Leases, Future Minimum Payments, Interest Included in Payments Less: interest Less: interest Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments Net minimum lease payments under capital leases Net minimum lease payments under capital leases Asset Retirement Obligations Balance, end of period Balance, beginning of year Balance, end of year Asset Retirement Obligation Reclamation Expenditures Asset Retirement Obligation Reclamation Expenditures Reclamation expenditures Schedule of Other Accrued Liabilities, Non-Current [Table] Schedule of Other Accrued Liabilities, Non-Current [Table] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Deferred Phantom Unit Plan [Member] Deferred Phantom Unit Plan [Member] Deferred Phantom Unit Plan [Member] Other Accrued Liabilities, Non-Current [Line Items] Other Accrued Liabilities, Non-Current [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Common stock to be available for grant Restricted Stock or Unit Expense Deferred Phantom Unit expense Schedule of Stock by Class [Table] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Outstanding, end of period Outstanding, beginning of year Unvested restricted share units outstanding Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Options granted under special stock option plan outstanding Granted Stock Options [Member] Stock Option Plan [Member] Performance Restricted Stock Units [Member] Performance Restricted Stock Units [Member] Performance Restricted Stock Units [Member] Restricted Stock Units R S U [Member] Restricted Share Units (RSUs) [Member] Deferred Share Unit Plan [Member] Deferred Share Unit Plan [Member] Deferred Share Unit Plan [Member] Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Par or Stated Value Per Share Preferred stock, par value, per share Allocated Share-based Compensation Expense, Net of Tax Recognized stock-based compensation expense Unrecognized Stock-Based Compensation Cost Unrecognized Stock-Based Compensation Cost Unrecognized stock-based compensation cost Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock units granted Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total Number of RSUs granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Stock options vested Vested and unissued, end of period, Number of RSUs Options granted under stock option plan Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Stock option plan, fully vested from grant date, years Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding, end of period, RSU's Outstanding, beginning of period, RSU's Options Granted Options granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Outstanding, end of period, Weighted Average Exercise Price Outstanding, beginning of period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Canceled/expired, Number of RSUs Canceled, Number of Stock Options Canceled/expired, Number of Stock Options Canceled/expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Total Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Canceled/expired, Weighted Average Exercise Price Canceled, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Exercised, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding, end of period, Weighted Average Remaining Restricted Period (years) Outstanding, end of period, Weighted Average Remaining Contractual Term (years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Exercisable, end of period, Number of Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Exercisable, end of period, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Exercisable, end of period, Weighted Average Remaining Contractual Term (years) Exercisable, end of period, Weighted Average Remaining Contractual Term (years) Adjustment for over issuance by stock plan administrator Adjustment for over issuance by stock plan administrator Correction of reporting of issuance by RSU stock plan administrator Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Number of RSUs Granted, Total Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total Granted, Number of RSUs Share based compensation arrangement by share based payment award options vested and issued in period. Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Issued In Period Vested/issued, Number of RSUs Vested/issued, Number of RSUs Gold Products and Services Revenue Gold Sales Revenue Silver Sales Revenue Silver Sales Silver Sales Number Of Gold Ounces Sold Number Of Gold Ounces Sold Gold Ounces Sold Number Of Silver Ounces Sold Number Of Silver Ounces Sold Silver Ounces Sold Income Tax Expense (Benefit), Continuing Operations Estimated tax expense Income Tax Expense (Benefit), Continuing Operations, Total Effective Income Tax Rate, Continuing Operations Effective tax rate Effective Income Tax Rate, Continuing Operations, Total Income tax provision (benefit), % of Pretax Income Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate United States statutory rate Weighted Average Number Of Shares Outstanding Basic Basic Weighted Average Number of Shares Outstanding, Basic, Total Weighted Average Number Of Shares Outstanding, Effect Of Stock Options Granted Under Stock Option Plans Weighted Average Number Of Shares Outstanding, Effect Of Stock Options Granted Under Stock Option Plans Effect of stock options granted under the 2007 Stock Option Plan Weighted Average Number Of Shares Outstanding, Effect Of Stock Options Granted Under The Special Stock Option Plan Weighted Average Number Of Shares Outstanding, Effect Of Stock Options Granted Under The Special Stock Option Plan Effect of stock options granted under the Special Stock Option Plan Weighted average number of shares outstanding effect of restricted share unit. Weighted Average Number Of Shares Outstanding Effect Of Restricted Share Unit Effect of RSUs Weighted average number of shares outstanding Diluted Weighted Average Number of Shares Outstanding, Diluted, Total Weighted average number of shares outstanding Schedule of Related Party Transactions, by Related Party [Table] Legal Entity [Axis] Entity [Domain] Entity [Domain] Cassels Brock & Blackwell LLP [Member] Cassels Brock Blackwell Llp [Member] Cassels Brock & Blackwell LLP [Member] Related Party Transaction [Line Items] Due to Related Parties Due to related parties Due to Related Parties, Total Related Party Transaction, Amounts of Transaction Related party transaction, amount Schedule of Segment Reporting Information, by Segment [Table] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] Hycroft Mine [Member] Hycroft Mine [Member] Hycroft Mine [Member] Exploration [Member] Exploration [Member] Exploration [Member] Corporate And Other [Member] Corporate And Other [Member] Corporate And Other [Member] Segment Reporting Information [Line Items] Assets, Net Total assets Assets, Net, Total Payments to Acquire Productive Assets Capital expenditures Payments to Acquire Productive Assets, Total Percentage of Reportable Segments Revenue Percentage of Reportable Segments Revenue Reportable segments revenue, percentage of combined revenue, minimum Fair Value, by Balance Sheet Grouping [Table] Fair Value, Hierarchy [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Inputs Level1 [Member] Level 1 [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Marketable Equity Securities, Fair Value Disclosure Marketable Equity Securities, Fair Value Disclosure Marketable equity securities Available-for-sale Securities, Fair Value Disclosure Balance, end of period Marketable equity securities Balance, end of period Unrealized holding gain Range [Axis] Range [Member] Range [Domain] Maximum [Member] Maximum [Member] Net Profit Royalty Payable, Percentage Net Profit Royalty Payable, Percentage Percentage of net profit royalty payable Payments For Where Mining Occurs On The Leased Claims Payments For Where Mining Occurs On The Leased Claims Payments for where mining occurs on the leased claims Royalty Expense Royalty payments Recorded Unconditional Purchase Obligation Purchase obligations Recorded Unconditional Purchase Obligation, Total