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 Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Trading Symbol Entity Common Stock, Shares Outstanding Consolidated Statements Of Operations [Abstract] Sales Sales Cost of sales and occupancy Cost of sales and occupancy Cost of sales and occupancy Gross Profit Gross profit Selling and administrative expenses Selling, General and Administrative Expense, Total Depreciation and Amortization Depreciation and amortization Depreciation and amortization Operating Income Loss Operating Profit (Loss) Operating profit Reportable segments operating profit Interest expense, net and amortization of deferred financing fees Interest Expense Net And Amortization Of Deferred Financing Fees Interest expense, net and amortization of deferred financing fees Interest expense, net and amortization of deferred financing fees Interest, net Consolidated income (loss) before taxes Income (loss) before taxes Income Tax Expense Benefit Income taxes Income taxes Net loss Net (loss) income Net income (loss) Net loss Net loss attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net loss attributable to noncontrolling interests Net (income) loss attributable to noncontrolling interests Net income Net loss Net income (loss) attributable to Barnes & Noble, Inc., basic Net income (loss) attributable to Barnes & Noble, Inc. Income (Loss) before Extraordinary Items and Cumulative Effect of Change in Accounting Principle, Per Basic Share [Abstract] Basic loss per common share Basic earnings (loss) per common share Net loss attributable to Barnes & Noble, Inc. Net income (loss) attributable to Barnes & Noble, Inc. available for common shareholders Net income attributable to Barnes & Noble, Inc. Net income (loss) attributable to Barnes & Noble, Inc. - Basic Income (Loss) before Extraordinary Items and Cumulative Effect of Change in Accounting Principle, Per Diluted Share [Abstract] Diluted loss per common share Diluted earnings (loss) per common share Net income attributable to Barnes & Noble, Inc. Net income (loss) attributable to Barnes & Noble, Inc. available for common shareholders Net income attributable to Barnes & Noble, Inc. Net income (loss) attributable to Barnes & Noble, Inc. - Diluted Weighted average common shares outstanding Basic weighted average common shares Basic Weighted Average Number of Shares Outstanding, Basic, Total Diluted weighted average common shares Diluted Diluted weighted average common shares Dividends declared per common share Consolidated Balance Sheets [Abstract] ASSETS Cash and cash equivalents Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value, Total Receivables, Net, Current Receivables, net Receivables, Net, Current, Total Inventory, Net Merchandise inventories Inventory, Net, Total Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current, Total Total current assets Total current assets Property and equipment: Land and land improvements Land and land improvements Buildings and leasehold improvements Buildings and Improvements, Gross, Total Fixtures And Equipment Gross Fixtures and equipment Fixtures and equipment Property, Plant and Equipment, Gross Property, Plant and Equipment, Gross, Ending Balance Property, Plant and Equipment, Gross, Beginning Balance Property and equipment, gross 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 Less accumulated depreciation and amortization Net property and equipment Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Net property and equipment Goodwill Goodwill, Beginning Balance Goodwill, Ending Balance Balance as of January 28, 2012 Balance as of April 30, 2011 Goodwill, Total Balance as of April 30, 2011 Intangible assets, net Intangible assets, net Total intangible assets Other noncurrent assets Other Assets, Noncurrent, Total Total Assets Total assets LIABILITIES AND SHAREHOLDERS' EQUITY Accounts payable Accounts Payable, Current, Total Accrued liabilities Accrued Liabilities, Current, Total Total current liabilities Total current liabilities Long-term debt Long-term Debt, Total Deferred Tax Liabilities Noncurrent Long-term deferred taxes Other Liabilities Other Liabilities, Noncurrent, Total Other long-term liabilities Total long-term liabilities Other Liabilities, Noncurrent, Total Temporary Equity, Carrying Amount Temporary Equity, Carrying Amount, Ending Balance Temporary Equity, Carrying Amount, Beginning Balance Temporary Equity, Carrying Amount, Total Redeemable Preferred Shares; $.001 par value; 5,000 shares authorized; 204, zero and zero shares issued, respectively Shareholders' equity: Common stock; $.001 par value; 300,000 shares authorized; 88,461 and 88,993 shares issued, respectively Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock; $.001 par value; 300,000 shares authorized; 90,928, 90,274 and 90,465 shares issued, respectively Common Stock, Value, Issued, Total Additional Paid in Capital, Common Stock Additional Paid in Capital, Common Stock, Ending Balance Additional Paid in Capital, Common Stock, Beginning Balance Additional paid-in capital Accumulated other comprehensive loss Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained earnings Retained earnings Treasury stock, at cost, 33,213, 33,061 and 33,148 shares, respectively Treasury stock, at cost, 33,537, 33,363 and 33,410 shares, respectively Treasury stock, at cost, 33,215, 33,066 and 33,148 shares, respectively Treasury Stock, Value, Ending Balance Treasury Stock, Value, Beginning Balance Treasury stock, at cost, 33,213, 33,061 and 33,148 shares, respectively Stockholders Equity Balance Balance Total shareholders' equity Total shareholders' equity Commitments and contingencies Total liabilities and shareholders' equity Total liabilities and shareholders' equity Temporary Equity, Par or Stated Value Per Share Redeemable Preferred Shares, par value Temporary Equity, Shares Authorized Redeemable Preferred Shares, shares authorized Temporary Equity, Shares Issued Redeemable Preferred Shares, shares issued Common stock, par value Common stock, shares authorized Common stock, shares issued Common Stock, Shares, Issued, Total Treasury stock, shares Treasury Stock, Shares, Ending Balance Treasury Stock, Shares, Beginning Balance Consolidated Statement Of Changes In 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] Accumulated Other Comprehensive Income [Member] Accumulated Other Comprehensive Losses [Member] Retained Earnings [Member] Retained Earnings [Member] Treasury Stock [Member] Treasury Stock At Cost [Member] Comprehensive loss: Total comprehensive loss Total comprehensive loss Exercise of 56 common stock options Exercise of 89 common stock options Stock options and restricted stock tax benefits Stock-based compensation expense Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures, Total Less allocation of earnings and dividends to participating securities Accretive dividend on preferred stock Accretion of dividends on preferred stock, diluted Accretion of dividends on preferred stock Participating Securities, Distributed and Undistributed Earnings, Total Accretive dividend on preferred stock Dividends, Preferred Stock, Stock Accrued/paid cash dividends for preferred stockholders Accrual of preferred stock dividends, basic Accrued cash dividends for preferred stockholders Treasury stock acquired, 29 shares Treasury stock acquired, 127 shares Cost of shares repurchased Treasury stock acquired, 65 shares Exercised, shares Exercised, shares stock options Stock options exercised, shares Treasury stock acquired, shares Shares repurchased Consolidated Statements Of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net loss from continuing operations to net cash flows from operating activities: Adjustments to reconcile net loss to net cash flows from operating activities: Depreciation and amortization (including amortization of deferred financing fees) Depreciation and amortization (including amortization of deferred financing fees) Share-based Compensation Stock-Based Compensation Expense Share-based Compensation, Total Stock-based compensation expense Property and equipment impairment charge Property and equipment impairment charge Deferred taxes Deferred Income Tax Expense (Benefit), Total Loss (gain) on disposal of property and equipment (Gain) loss on disposal of property and equipment (Gain) loss on disposal of property and equipment Loss (gain) on disposal of property and equipment Increase Decrease In Other Operating Liabilities Decrease in other long-term liabilities Increase (Decrease) in Other Operating Liabilities, Total Increse Decrease In Operating Capital Changes in operating assets and liabilities, net Changes in operating assets and liabilities, net Changes in operating assets and liabilities, net Changes in operating assets and liabilities, net Net Cash Provided by (Used in) Operating Activities Net cash flows from operating activities Cash flows used in investing activities: Proceeds from Sale of Buildings Sale of distribution facility Proceeds from sale of distribution center Purchases of property and equipment Purchases of property and equipment Purchases of property and equipment Net increase in other noncurrent assets Net (increase) decrease in other noncurrent assets Net (increase) decrease in other noncurrent assets Net (increase) decrease in other noncurrent assets Acquisition of intellectual property Acquisition of intellectual property Acquisition of Borders Group, Inc. intellectual property Purchase of Borders Group, Inc. intellectual property Payments on earn outs Payments On Earn Outs Fictionwise earn-out payments Fictionwise earn-out payments Purchase of noncontrolling interest Purchase of non-controlling interest Net Cash Provided by (Used in) Investing Activities Net cash flows used in investing activities Cash flows used in financing activities: Proceeds from Issuance of Preferred Stock and Preference Stock Net proceeds from issuance of Series J preferred stock Net increase (decrease) in credit facility Net (decrease) increase in credit facility Cash dividend paid to shareholders Cash dividend paid to shareholders Cash dividend paid to shareholders Proceeds from exercise of common stock options Purchase of treasury stock Purchase of treasury stock Excess tax benefit from stock-based compensation Repayments of Short-term Debt Payment of short term note payable Payment of short term note payable Repayments of Short-term Debt, Total Net Cash Provided by (Used in) Financing Activities Net cash flows used in financing activities Net (decrease) increase in cash and cash equivalents Net decrease in cash and cash equivalents Changes in operating assets and liabilities, net: Receivables, net Receivables, net Receivables, net Receivables, net Increase Decrease In Inventories Merchandise inventories Merchandise inventories Merchandise inventories Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid expenses and other current assets Accounts payable and accrued liabilities Accounts payable and accrued liabilities Accounts payable and accrued liabilities Accounts payable and accrued liabilities Supplemental cash flow information: Interest paid Interest Paid, Total Income taxes (net of refunds) Income Taxes Paid, Net, Total Supplemental disclosure of subsidiaries acquired: Assets acquired (net of cash acquired) Assets acquired (net of cash acquired) Liabilities assumed (including Seller Notes) Liabilities assumed (including Seller Notes) Liabilities assumed (including Seller Notes) cash paid on acquisition Cash Paid On Acquisition Cash paid Cash paid Non-cash financing activity [Abstract] Non Cash Financing Activity Abstract Non-cash financing activity: Accrued dividend on redeemable preferred stock Accrued dividend on redeemable preferred stock Basis Of Presentation [Abstract] Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Basis Of Presentation Merchandise Inventories [Abstract] Merchandise Inventories [Text Block] Merchandise Inventories Reclassifications [Abstract] Reclassifications [Text Block] Reclassifications Revenue Recognition [Abstract] Revenue Recognition [Text Block] Revenue Recognition [Text Block] Revenue Recognition Research And Development Costs For Software Products [Abstract] Research, Development, and Computer Software Disclosure [Text Block] Research And Development Costs For Software Products Earnings (Loss) Per Share [Abstract] Earnings Per Share [Text Block] Earnings (Loss) Per Share Segment Reporting [Abstract] Segment Reporting Disclosure [Text Block] Segment Reporting Changes In Intangible Assets And Goodwill [Abstract] Changes in Intangible Assets and Goodwill [Text Block] Changes In Intangible Assets And Goodwill Gift Cards [Abstract] Gift Cards [Abstract] Gift Cards [Text Block] Gift Cards Text Block Gift Cards Other Long-Term Liabilities [Abstract] Long Term Debt [Text Block] Other Long-Term Liabilities Income Taxes [Abstract] Income Taxes [Text Block] Income Taxes Fair Values Of Financial Instruments [Abstract] Fair Value Measurement Inputs Disclosure [Text Block] Fair Values Of Financial Instruments Credit Facility [Abstract] Schedule Of Line Of Credit Facilities [Text Block} Credit Facility Stock-Based Compensation [Abstract] Stock - Based Compensation Stock-Based Compensation Pension And Other Postretirement Benefit Plans [Abstract] Pension and Other Postretirement Benefits Disclosure [Text Block] Pension And Other Postretirement Benefit Plans Sale Of Distribution Facility Abstract Sale Of Distribution Facility [Abstract] Sale of distribution facility text block Sale Of Distribution Facility [Text block] Sale Of Distribution Facility Acquisition Of Certain Borders' Intellectual Property Assets [Abstract] Intangible Assets Disclosure [Text Block] Acquisition Of Certain Borders' Intellectual Property Assets Liberty Investment [Abstract] Liberty Investment [Abstract] Investment in company through private placement [Text Block] Investment In Company Through Private Placement [Text Block] Liberty Investment Acquisition Of Noncontrolling Interest [Abstract] Acquisition of Noncontrolling Interest [Text Block] Acquisition of Noncontrolling Interest [Text Block] Acquisition Of Noncontrolling Interest Shareholders' Equity [Abstract] Stockholders Equity Note Disclosure [Text Block] Shareholders' Equity Legal Proceedings [Abstract] Commitments And Contingencies Disclosure [Text Block] Legal Proceedings Recent Accounting Pronouncements [Abstract] Recent accounting pronouncements disclosure [Text Block] Recent accounting pronouncements disclosure text block Recent Accounting Pronouncements Schedule of Basic and Diluted Earnings (Loss) per Share Calculations Reconciliation Of Basic And Diluted Loss Per Share Schedule of Summarized Financial Information Concerning the Company's Reportable Segments Summarized Financial Information Of Reportable Segments Schedule of Reconciliation of Operating Profit from Reportable Segments to Income from Continuing Operations Before Taxes in the Consolidated Financial Statements Reconciliation Of Operating Profit (Loss) From Reportable Segments Schedule of Finite-Lived Intangible Assets by Major Class [Table Text Block] Amortizable Intangible Assets Schedule of Indefinite-lived Intangible Assets by Major Class [Table Text Block] Unamortizable Intangible Assets Schedule Of Aggregate Amortization Expense Table Text Block Schedule Of Aggregate Amortization Expense [Table Text Block] Aggregate Amortization Expense Schedule of Expected Amortization Expense [Table Text Block] Estimated Amortization Expense Schedule of Changes in the Carrying Amount of Goodwill by Segment [Table Text Block] Schedule of Changes in the Carrying Amount of Goodwill by Segment [Table Text Block] Changes In The Carrying Amount Of Goodwill By Segment Schedule Of Long Term Liabilities [Table Text Block] Schedule Of Long Term Liabilities [Table Text Block] Long-Term Liabilities Schedule of Recognized Stock Based Compensation Expenses Stock-Based Compensation Expense Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Domain] Deferred Revenue Arrangement Type [Domain] Annual Membership Fees [Member] Annual Fee [Member] Deferred Revenue Arrangement [Line Items] Estimated Useful Life Of Equipment And Devices Estimated useful life of equipment and devices Estimated life of NOOK, years Customer fees, non-refundable after the first thirty days, revenue recognized Customer Fees Non Refundable After The First Thirty Days Revenue Recognized Non-refundable, after first 30 days, annual fee Participating antidilutive securities excluded from computation of earnings per share Participating securities excluded from the calculation of earnings per share Dividends preferred stock basic. Dividends Preferred Stock Basic Accrual of preferred stock dividends, basic Dividends preferred stock diluted. Dividends Preferred Stock Diluted Accrual of preferred stock dividends, diluted Participating securities distributed and undistributed earnings basic. Participating Securities Distributed And Undistributed Earnings Basic Accretion of dividends on preferred stock, basic Accretion of dividends on preferred stock, basic Participating securities distributed and undistributed earnings diluted. Participating Securities Distributed And Undistributed Earnings Diluted Accretion of dividends on preferred stock, diluted Undistributed Earnings Allocated to Participating Securities Less allocation of earnings and dividends to participating securities, basic Less allocation of earnings and dividends to participating securities Net income (loss) available to common shareholders Net income (loss) available to common shareholders, basic Effect of dilutive options Dilutive Securities, Effect on Basic Earnings Per Share, Total Net Income (Loss) Available to Common Stockholders, Diluted Net income (loss) available to common shareholders Net income (loss) available to common shareholders, diluted Preferred Stock Dividends and Other Adjustments Preferred Stock Dividends and Other Adjustments, Total Preferred shares Average dilutive options Weighted Average Number Diluted Shares Outstanding Adjustment, Total Schedule of Segment Reporting Information, by Segment [Table] Statement, Business Segments [Axis] Segment [Domain] Segment [Domain] B And N College [Member] B And N College [Member] B&N College [Member] B And N Retail [Member] B And N Retail [Member] B&N Retail [Member] Segment Reporting Information [Line Items] Number of Stores Number Of Operating Segments Number Of Operating Segments B And N Dot Com [Member] B And N Dot Com [Member] B&N.com [Member] Capital Expenditures Payments to Acquire Productive Assets, Total Schedule of Finite-Lived Intangible Assets by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Customer Relationships [Member] Customer Relationships And Other Acquired Intangible Assets [Member] Author Contracts [Member] Author Contracts [Member] Author Contracts [Member] Technology [Member] Technology [Member] Technology [Member] Distribution Contracts [Member] Distribution Contracts [Member] Distribution Contracts [Member] Other Amortization [Member] Other [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Useful Life, Minimum Useful Life, minimum, years Finite-Lived Intangible Assets, Useful Life, Maximum Useful Life, maximum, years Finite-Lived Intangible Assets, Average Useful Life Useful Life, years Intellectual property assets, amortization period (years) Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross, Total Gross Carrying Amount Finite-Lived Intangible Assets, Accumulated Amortization Accumulated Amortization Accumulated Amortization Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net, Total Total Schedule of Indefinite-lived Intangible Assets by Major Class [Table] Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite Lived Intangible Assets Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Trade Names [Member] Trade Name [Member] Publishing Contracts [Member] Publishing Contracts [Member] Publishing Contracts [Member] Indefinite-lived Intangible Assets by Major Class [Line Items] Indefinite-Lived Intangible Assets (Excluding Goodwill) Indefinite-Lived Intangible Assets (Excluding Goodwill), Total Unamortizable intangible assets Finite-Lived Intangible Assets, Amortization Expense Aggregate Amortization Expense Future Amortization Expense, Year One 2012 Future Amortization Expense, Year Two 2013 Future Amortization Expense, Year Three 2014 Future Amortization Expense, Year Four 2015 Future Amortization Expense, Year Five 2016 Schedule of Goodwill [Table] Goodwill [Line Items] Benefit of Excess Tax Amortization Benefit of Excess Tax Amortization Benefit of excess tax amortization Benefit of excess tax amortization Tax Basis of Goodwill Exceeded the Related Basis Tax Basis of Goodwill Exceeded the Related Basis Tax basis of goodwill in excess of related basis Revenue Recognition, Gift Cards, Breakage Recognized gift card breakage Gift Card Liability, Current Gift card liabilities Deferred Rent Credit, Noncurrent Deferred Rent Junior Subordinated Notes, Noncurrent Junior Seller Note Other Long-term Debt, Noncurrent Other Unrecognized tax benefits Unrecognized Tax Benefits, Ending Balance Unrecognized Tax Benefits, Beginning Balance Accrued interest and penalties included in unrecognized tax benefits Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total Credit facility Table Credit facility [Table] Line of Credit Facility [Axis] Line Of Credit Facility Lender [Domain] Line of Credit Facility, Lender [Domain] Amended credit agreement [member] Amended Credit Agreement [Member] Amended Credit Agreement [Member] Line of Credit Facility [Line Items] Line of Credit Facility, Current Borrowing Capacity Credit facility, borrowing capacity Credit Facility Maturity Term Credit Facility Maturity Term Credit facility maturity term, in years Line of Credit Facility, Increase, Additional Borrowings Increase in commitments under the Amended Credit Agreement, maximum Percentage Of Loan Cap Under Credit Agreement Percentage Of Loan Cap Under Credit Agreement Percentage of Loan Cap under Amended Credit Agreement Amount Of Loan Cap Under Credit Agreement Amount Of Loan Cap Under Credit Agreement Amount of Loan Cap under Amended Credit Agreement Line of Credit Facility, Amount Outstanding Acquisition finance through credit facility Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [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] Restricted Stock Units R S U [Member] Restricted Stock Units (RSUs) [Member] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Employee Service Share Based Compensation Allocation Of Recognized Period Costs Report Line [Domain] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Selling And Administrative Expense Member Selling And Administrative Expense [Member] Selling And Administrative Expenses [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Restricted Stock or Unit Expense Restricted Stock Expense Stock Option Plan Expense Stock-based compensation expense Stock Option Expense Pension Expense Pension expense Pension and Other Postretirement Benefit Contributions Company contributions for postretirement plan Pension and Other Postretirement Benefit Contributions, Total Gain (Loss) on Disposition of Property Gain (Loss) on Disposition of Property, Total Loss on sale of distribution facility Acquired Finite-lived Intangible Asset, Amount Purchase price of intellectual property assets Acquisition of Borders Group, Inc. intellectual property Amortization of Acquired Intangible Assets Amortization expense related to acquisition Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary, Sale of Stock [Axis] Sale Of Stock Name Of Transaction [Domain] Sale of Stock, Name of Transaction [Domain] Private Placement [Member] Private Placement [Member] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Preferred Stock [Member] Preferred Stock [Member] Series J Preferred Stock [Member] Series J Preferred Stock [Member] Series J Preferred Stock [Member] Subsidiary, Sale of Stock [Line Items] Preferred stock, shares issued Preferred Stock issued, shares Preferred Stock, Shares Issued, Total Preferred Stock, Par or Stated Value Per Share Preferred stock, par value per share Preferred Stock, par value per share Preferred Stock, Value, Issued Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Aggregate purchase price of Preferred Stock Preferred Stock, Value, Issued, Total Temporary equity - Preferred Shares; $.001 par value; 5,000 shares authorized; 204 and 0 shares issued, respectively Percentage representation of common stock outstanding upon conversion Percentage representation of common stock outstanding upon conversion Preferred stock, initial conversion price Preferred Stock, initial conversion price Preferred Stock, Dividend Rate, Percentage Initial dividend rate for the Preferred Stock Conversion Rate Of Preferred Stock Conversion Rate Of Preferred Stock Percentage of conversion price of the Preferred Stock Number Of Consecutive Trading Days Applicable To The Conversion Of Preferred Stock. Number Of Consecutive Trading Days Applicable To The Conversion Of Preferred Stock Number of consecutive trading days applicable to the conversion of Preferred Stock Legal Fees Legal and accounting fees Noncontrolling Interest [Table] Legal Entity [Axis] Entity [Domain] Entity [Domain] Begin Smart Limited Liability Company Member Begin Smart Limited Liability Company [Member] Begin Smart LLC [Member] Noncontrolling Interest [Line Items] Equity Method Investment, Ownership Percentage Prior joint venture interest ownership percentage Increase in Ownership Percentage Increase in Ownership Percentage Increase in ownership percentage Business Acquisition, Cost of Acquired Entity, Purchase Price Purchase price paid Purchase price paid Purchase price for remaining interest Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions Ownership percentage, post acquisition Schedule of Stock by Class [Table] Series I Preferred Stock [Member] Series I Preferred Stock [Member] Series I Preferred Stock [Member] Class of Stock [Line Items] Dividends Payable, Date Declared, Day, Month and Year Dividend declared date Dividends Payable, Date of Record, Day, Month and Year Dividend payable, record date Proportion Of Preferred Stock In Common Stock Proportion Of Preferred Stock In Common Stock Proportion of preferred stock in common stock Preferred Stock, Redemption Price Per Share Preferred stock price per share Rights expiry date Rights expiry date Percent of Assets Sold to Acquiring Entity, Threshold for Discounted Share Purchase Percent of Assets Sold to Acquiring Entity, Threshold for Discounted Share Purchase Percent of assets sold to acquiring entity, threshold for discounted share purchase Rate of Discounted Share Purchase Rate of Discounted Share Purchase Rate of discounted share purchase Current Beneficial Ownership Threshold Percentage Current Beneficial Ownership Threshold Percentage Current beneficial ownership threshold percentage Loss Contingencies [Table] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Domain] Loss Contingency, Nature [Domain] Minor [Member] Minor [Member] Minor [Member] Stockholder Derivative Litigation [Member] Stockholder Derivative Litigation [Member] Stockholder Derivative Litigation [Member] Strugala [Member] Strugala [Member] Strugala [Member] Microsoft [Member] Microsoft [Member] Microsoft [Member] Lina [Member] Lina [Member] Lina [Member] Burstein [Member] Burstein [Member] Burstein [Member] Loss Contingencies [Line Items] Total Number of Employees Under Subclass One Total number of employees under subclass one Total Number of Employees Under Subclass Two Total number of employees under subclass two Number Of Plaintiffs Added To Case Management Conference Number Of Plaintiffs Added To Case Management Conference Number of plaintiffs added to case management conference Consolidated cases, number of lawsuits Consolidated cases, number of lawsuits Number Of Complaints Filed Number Of Complaints Filed Number of putative shareholder derivative complaints filed