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Other Segments [Member] Other Segments [Member] Segment Information by Entity [Axis] Segment Information By Entity [Axis] Segment Information by Entity [Axis] Financial Information By Subsidiary [Domain] Financial Information By Subsidiary [Domain] Financial Information By Subsidiary [Domain] AdvantEdge Healthcare Solutions, Inc. [Member] Advantedge Healthcare Solutions Inc [Member] AdvantEdge Healthcare solutions Inc. Aventura [Member] Aventura [Member] Aventura [Member] Good Start Genetics, Inc. [Member] Good Start Genetics Inc [Member] Good start genetics, inc. InfoBionic [Member] InfoBionic [Member] InfoBionic [Member] Medivo, Inc. [Member] Medivo Inc [Member] Medivo Inc. meQuilibrium [Member] meQuilibrium [Member] meQuilibrium [Member] NovaSom, Inc. [Member] Nova Som Inc [Member] NovaSom inc. Propeller [Member] Propeller [Member] Propeller [Member] Putney, Inc. [Member] Putney Inc [Member] Putney inc. Syapse, Inc. [Member] Syapse, Inc. [Member] Syapse, Inc. [Member] Trice [Member] Trice [Member] Trice [Member] Zipnosis [Member] Zipnosis [Member] Zipnosis [Member] Appfirst [Member] Appfirst [Member] AppFirst [Member] Apprenda, Inc. [Member] Apprenda, Inc. [Member] Apprenda, Inc. [Member] Beyond.com, Inc [Member] Beyond Com Inc [Member] Beyond com Inc. Bridgevine, Inc. [Member] Bridgevine Inc [Member] Bridgevine, Inc. Cask Data [Member] Cask Data [Member] Cask Data [Member] CloudMine [Member] CloudMine [Member] CloudMine [Member] Clutch [Member] Clutch [Member] Clutch [Member] Full Measure [Member] Full Measure [Member] Full Measure [Member] Hoopla Software, Inc. [Member] Hoopla Software Inc [Member] Hoopla software inc member. Lumesis, Inc. [Member] Lumesis Inc [Member] Lumesis Inc. MediaMath, Inc. [Member] Media Math Inc [Member] MediaMath Inc. Pneuron [Member] Pneuron [Member] Pneuron [Member] QuanticMind, Inc. [Member] QuanticMind, Inc. [Member] QuanticMind, Inc. [Member] Sonobi [Member] Sonobi [Member] Sonobi [Member] Spongecell, Inc. [Member] Spongecell Inc [Member] Spongecell Inc. 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Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accrued expenses and other current liabilities [Member] Accrued Expenses And Other Current Liabilities [Member] Accrued expenses and other current liabilities. Other long-term liabilities [Member] Other Long Term Liabilities [Member] Other long term liabilities. Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Credit Arrangements [Member] Credit Arrangements [Member] Credit arrangements. Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Landlord Of Compu Com Systems Incs Dallas Headquarters [Member] Landlord Of Compu Com Systems Incs Dallas Headquarters [Member] Landlord of CompuCom Systems, Inc.'s Dallas headquarters. 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Accrued expenses Accrued Liabilities, Current Other long-term liabilities Other Liabilities, Noncurrent Company's ownership in the funds Company Ownership In Funds Company's ownership in the funds. Annual payments Future Annual Payment To Chairman And Chief Executive Officer Future annual payment to former chairman and chief executive officer. Liability to former chairman and chief executive officer, current Other Deferred Compensation Arrangements, Liability, Current Liability to former chairman and chief executive officer, non-current Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent Letters of credit outstanding Letters of Credit Outstanding, Amount Letter of credit expiration date Line of Credit Facility, Expiration Date Restructuring and related cost, expected cost Restructuring and Related Cost, Expected Cost Quarterly Financial Information Disclosure [Abstract] General and administrative expense General and Administrative Expense Operating loss Operating Income (Loss) Other income (loss), net Other Nonoperating Income (Expense) Interest income Investment Income, Interest Interest expense Interest Expense, Debt Equity loss Income (Loss) from Equity Method Investments Net loss before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Income tax benefit (expense) Income Tax Expense (Benefit) Net loss Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss per share Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Net Loss Per Share Earnings Per Share [Text Block] Active Partner Companies by Segment Schedule Of Company Active Partner [Table Text Block] Schedule Of Company Active Partner [Table Text Block] Segment Data from Operations Schedule of Segment Reporting Information, by Segment [Table Text Block] Net Loss from Other Items Schedule Of Components Of Income Loss From Continuing Operations [Table Text Block] Schedule Of Components Of Income Loss From Continuing Operations [Table Text Block] Income Statement [Abstract] Net loss per share: Weighted average shares used in computing net loss per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Statement of Comprehensive Income [Abstract] Net loss Other comprehensive income (loss), before taxes: Other Comprehensive Income (Loss), before Tax [Abstract] Share of other comprehensive loss of equity method investments Other Comprehensive Income (Loss), Share of Other Comprehensive Income (Loss) of Equity Method Investments Other Comprehensive Income (Loss), Share of Other Comprehensive Income (Loss) of Equity Method Investments Total comprehensive loss Other Comprehensive Income (Loss), Net of Tax Ownership Interests in and Advances to Partner Companies and Funds [Abstract] Ownership Interests in and Advances to Partner Companies and Funds [Abstract] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] PixelOptics, Inc. [Member] Pixel Optics Inc [Member] Pixel optics inc. Nupathe [Member] Nupathe [Member] Nupathe. Summary of the carrying value of the Company's ownership interests in and advances to partner companies and private equity funds Schedule of Investments in and Advances to Affiliates, Schedule of Investments [Table Text Block] Unaudited Financial Information Equity Method Investment Summarized Financial Information [Table Text Block] Equity Method Investment Summarized Financial Information [Table Text Block] Results of Operation Equity Method Investment Partner Company Results Of Operation [Table Text Block] Equity Method Investment Partner Company Results Of Operation [Table Text Block] Ownership Interests in and Advances to Partner Companies Investments in and Advances to Affiliates, Schedule of Investments [Text Block] Fair Value Disclosures [Abstract] Carrying Value and Fair Value of Certain Financial Assets and Liabilities Measured at Fair Value on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Differences Between 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Alverix Inc [Member] Alverix Inc [Member] Alverix inc. Crescendo [Member] Crescendo [Member] Crescendo [Member] Quantia [Member] Quantia [Member] Quantia DriveFactor Inc. [Member] Drive Factor [Member] Drive factor. Dabo [Member] Dabo [Member] Dabo [Member] Sotera [Member] Sotera [Member] Sotera [Member] PixelOptics, Inc. 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Vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Expiration term (in years) Share Based Compensation Arrangement By Share Based Payment Award Expiration Term Share based compensation arrangement by share based payment award expiration term. Weighted-average grant date fair value of options issued (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Total intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Total unrecognized compensation cost related to non-vested stock options granted Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Weighted-average period for recognition (in years) Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Cash liability for performance-based units Cash Liability for Performance-Based Units Cash Liability for Performance-Based Units Percentage of shares vested in lieu of directors fees at the grant date Percentage Of Shares Vested In Lieu Of Directors Fees At Grant Date Percentage of shares vested in lieu of directors fees at the grant date. Portion of Director fees matched to deferred stock units Portion Of Director Fees Matched To Deferred Stock Units Portion of director fees matched to deferred stock units. Vesting period of deferred stock (in years) Share Based Compensation Arrangement By Share Based Payment Deferred Award Vesting Period Share based compensation arrangement by share based payment deferred award vesting period. Granted to restricted shares to members of its advisory boards (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Compensation cost not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Total fair value of stock-based compensation vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Fair Value Measurements Fair Value Disclosures [Text Block] Related Party Transactions [Abstract] Loan agreement Related Party Transaction, Amounts of Transaction Impairment charges against loan Loan Impairment Charge Loan Impairment Charge Receipt in payments on loan Proceeds from Related Party Debt Loan, carrying value Impaired Loans Carrying Amount Impaired Loans Carrying Amount Statement of Financial Position [Abstract] Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Treasury Stock, Shares Treasury Stock, Shares ASSETS Assets [Abstract] Current Assets: Assets, Current [Abstract] Cash and cash equivalents Marketable securities Held-to-maturity Securities, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Ownership interests in and advances to partner companies Loan participations receivable Notes, Loans and Financing Receivable, Net, Noncurrent Long-term marketable securities Held-to-maturity Securities, Noncurrent Other assets Other Assets, Noncurrent Total Assets Assets LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Current Liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued compensation and benefits Employee-related Liabilities, Current Accrued expenses and other current liabilities Total current liabilities Liabilities, Current Convertible senior debentures—non-current Convertible Debt, Noncurrent Total Liabilities Liabilities Commitments and contingencies Commitments and Contingencies Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock, $0.10 par value; 1,000 shares authorized Preferred Stock, Value, Issued Common stock, $0.10 par value; 83,333 shares authorized; 21,573 issued at December 31, 2015 and 2014, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Treasury stock, at cost; 993 and 921 shares at December 31, 2015 and 2014, respectively Treasury Stock, Value Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total Equity Total Liabilities and Equity Liabilities and Equity Principles of Consolidation Basis of Accounting, Policy [Policy Text Block] Principles of Accounting for Ownership Interests in Companies Investment, Policy [Policy Text Block] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Cash and Cash Equivalents and Marketable Securities Cash and Cash Equivalents, Policy [Policy Text Block] Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Net Income (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Segment Information Segment Reporting, Policy [Policy Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] General and Administrative Expense [Member] General and Administrative Expense [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense Corporate operations Income tax benefit (expense) Operating Segments Segment Reporting Disclosure [Text Block] Disclosure Convertible Debentures And Credit Arrangements Additional Information [Abstract] Disclosure - Convertible Debentures and Credit Arrangements - Additional Information [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum [Member] Minimum [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Aggregate principal amount of convertible senior debentures Debt Instrument, Face Amount Interest rate on debentures Debt Instrument, Interest Rate, Stated Percentage Number of days within 30 consecutive trading days in which the closing price of the entity's common stock exceeded the conversion price giving the holders of the debentures an option (in days) Debt Instrument Option Common Stock Closing Sales Price Number Of Trading Days Debt instrument option common stock closing sales price number of trading days. Number of consecutive trading days during which the closing price of the entity's common stock exceeded the conversion price for at least 20 days giving the holders of the debentures an option (in days) Debt Instrument Option Number Of Consecutive Trading Days Debt instrument option number of consecutive trading days. Percentage of the closing sales price of the entity's common stock that the conversion price exceeded giving the holders of the debentures an option (as a percent) Debt Instrument Common Stock Closing Sales Price As Percentage Of Conversion Price Debt instrument common stock closing sales price as percentage of conversion price. Number of days after five consecutive trading days in which the trading price per $1,000 principal amount was less than 98% of the product of the closing sale price per share of Company common stock multiplied by the conversion rate on each such trading day (in days) Debt Instrument Option Number Of Consecutive Trading Days In Which Trading Price Per Thousand Principal Amount Was Less Than Specified Criteria Debt instrument option number of consecutive trading days in which trading price per thousand principal amount was less than specified criteria. Number of consecutive trading days during which the trading price per $1,000 principal amount for at least five days was less than 98% of the product of the closing sale price per share of Company common stock multiplied by the conversion rate on each such trading day (in days) Debt Instrument Option Number Of Consecutive Trading Days During Which Trading Price Per Thousand Principal Amount Was Less Than Specified Percentage Debt instrument option number of consecutive trading days during which trading price per thousand principal amount was less than specified percentage. Principal amount of convertible debentures Principal Amount Convertible Debenture Principal Amount, Convertible Debenture Closing price is percentage of conversion price Debt Instrument Option Common Stock Closing Sales Price As Percentage Of Conversion Price Debt instrument option common stock closing sales price as percentage of conversion price. Conversion rate of common stock Debt Conversion, Converted Instrument, Shares Issued Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Closing price for common stock Share Price Sales price of common stock to conversion price Percentage Threshold Closing Sale Price Of Common Stock Higher Than Conversion Price Percentage Threshold Closing Sale Price Of Common Stock Higher Than Conversion Price Debentures redemption price Debt Instrument Cash Redemption Price Debt Instrument, Cash Redemption Price Change in control due to debentures redemption Redemption Rate Of Debt Instrument Demanded By Holder Under Change In Business Control Redemption Rate Of Debt Instrument Demanded By Holder Under Change In Business Control Percentage of principal amount and accrued and unpaid interest for repurchase of debt Percentage Of Principal Amount And Accrued And Unpaid Interest For Repurchase Of Debt Percentage Of Principal Amount And Accrued And Unpaid Interest For Repurchase Of Debt Outstanding debentures Long-term Debt, Gross Fair value of Debentures outstanding Debt Instrument, Fair Value Disclosure Gross carrying amount of equity component Debt Instrument, Convertible, Carrying Amount of Equity Component Principal amount of liability component Principal Amount Of Liability Component Principal Amount Of Liability Component Unamortized discount Debt Instrument, Unamortized Discount Carrying value of liability component Debt Instrument Convertible Carrying Value Of Liability Component Net Debt instrument convertible carrying value of liability component net. Debt instrument effective rate Debt Instrument, Interest Rate, Effective Percentage 2016 Net Operating Loss Carryforwards Expiring In Year One Net Operating Loss Carryforwards Expiring In Year One 2017 Net Operating Loss Carryforwards Expiring In Year Two Net Operating Loss Carryforwards Expiring In Year Two 2018 Net Operating Loss Carryforwards Expiring In Year Three Net Operating Loss Carryforwards Expiring In Year Three 2019 Net Operating Loss Carryforwards Expiring In Year Four Net Operating Loss Carryforwards Expiring In Year Four 2020 and thereafter Net Operating Loss Carryforwards Expiring In Year Thereafter Net Operating Loss Carryforwards Expiring In Year Thereafter Total Unvested, shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Activity Nonvested [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Activity Nonvested [Abstract] Unvested, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested, Ending Balance Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Unvested, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested ,Ending Balance Statutory tax (benefit) expense Increase (decrease) in taxes resulting from: Effective Income Tax Rate Reconciliation, Percent [Abstract] Stock-based compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent Nondeductible expenses Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent Valuation allowance Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent Effective income tax rate, percent Effective Income Tax Rate Reconciliation, Percent Supplemental Cash Flow Information [Abstract] Supplemental Cash Flow Information Cash Flow, Supplemental Disclosures [Text Block] Income Taxes Income Tax Disclosure [Text Block] Other Income and Expense [Table] Other Income and Expense [Table] Other Income and Expense [Table] Cost-method Investments [Member] Cost-method Investments [Member] Other Income and Expense [Line Items] Other Income and Expense [Line Items] [Line Items] for Other Income and Expense [Table] Gain on sale of ownership interests in cost method partner companies Gain on Sale of Investments Impairment charges on cost method partner companies and private equity funds Other Asset Impairment Charges Other Other Income Converted instrument amount Debt Conversion, Converted Instrument, Amount Interest payments Interest Paid Cash paid for taxes Income Taxes Paid Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] 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, by Balance Sheet Grouping, Disclosure Item Amounts [Axis] Measurement Basis [Axis] Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Value [Member] Reported Value Measurement [Member] Estimate of Fair Value Measurement [Member] Estimate of Fair Value Measurement [Member] Eligible Item or Group for Fair Value Option [Axis] Eligible Item or Group for Fair Value Option [Axis] Fair Value, Option, Eligible Item or Group [Domain] Fair Value, Option, Eligible Item or Group [Domain] Commercial Paper [Member] Commercial Paper [Member] U.S. Treasury Bills [Member] US Treasury Bill Securities [Member] US Government Agencies Debt Securities [Member] US Government Agencies Debt Securities [Member] Certificates of deposit [Member] Certificates of Deposit [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Level 2 [Member] Fair Value, Inputs, Level 2 [Member] Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Marketable securities - held-to-maturity Held-to-maturity Securities, Fair Value Apprenda [Member] Apprenda [Member] Apprenda [Member] InsideVault [Member] InsideVault [Member] InsideVault [Member] Advantedge [Member] Advantedge [Member] AHS [Member] Spongecell [Member] Spongecell [Member] Spongecell. Convertible bridge loan Convertible Bridge Loan Convertible bridge loan. Acquisitions of ownership interests in companies and funds, net of cash acquired Unrealized gain (loss) from change in ownership Equity Method Investment, Unrealized Gain (Loss) from Change in Ownership Equity Method Investment, Unrealized Gain (Loss) from Change in Ownership Payments to Acquire Other Investments Payments to Acquire Other Investments Cost of shares acquired from previous investor cost of shares acquired from previous investor cost of shares acquired from previous investor Related Party Transactions Related Party Transactions Disclosure [Text Block] Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Average expected option life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Equity Stockholders' Equity Note Disclosure [Text Block] Other Income (Loss), Net Interest and Other Income [Table Text Block] Revenue Equity Method Investment, Summarized Financial Information, Revenue Gross profit Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) Net loss Equity Method Investment, Summarized Financial Information, Net Income (Loss) Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Trading Symbol Trading Symbol Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Public Float Entity Public Float Reportable Subsegments [Member] Reportable Subsegments [Member] Operating loss Assets Investments, Debt and Equity Securities [Abstract] Current assets Equity Method Investment, Summarized Financial Information, Current Assets Non-current assets Equity Method Investment, Summarized Financial Information, Noncurrent Assets Total assets Equity Method Investment, Summarized Financial Information, Assets Current liabilities Equity Method Investment, Summarized Financial Information, Current Liabilities Non-current liabilities Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities Shareholders’ equity Equity Method Investment Summarized Financial Information, Equity Total liabilities and shareholders’ equity Equity Method Investment, Summarized Financial Information, Liabilities and Equity New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Equity Income (Loss) Equity Income (Loss) [Member] Equity Income (Loss) [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Immaterial prior period adjustment made in current period immaterial prior period adjustment made in current period immaterial prior period adjustment made in current period Marketable securities, current Marketable securities, non current Calculations of Net Income (Loss) Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]