Forgiveness of notes receivable from stockholder Forgiveness of Notes Receivable from Stockholder Represents the amount of note receivable from stockholders that has been forgiven by the entity during the reporting period. Forgiveness of note receivable from stockholder Unbilled Receivables Escalation of monthly access fees for the entity's network not billed at the end of the reporting period. Unbilled receivables Unbilled receivables Noncash Stock Issuance Cost Offering costs in accounts payable, accrued expenses and other liabilities The cost incurred directly with the issuance of an equity security which is not paid by the entity and held in liabilities. Unpaid Incurred Business Acquisition Contractual Obligations Future cash outflows to pay for liability related to revenue sharing arrangement with previous owners of acquired business entities incurred but unpaid at the end of the reporting period. Contractual obligation related to business acquisition in accrued expenses and other liabilities Summary of significant accounting policies Represents the entire disclosure related to significant accounting policies and new accounting pronouncements. Significant Accounting Policies and Recent Accounting Pronouncements Disclosure [Text Block] Preferred and common stock warrants Preferred and common stock warrants Preferred And Common Stock Warrants Disclosure [Text Block] Represents details related to preferred and common stock warrants in one text block. Document and Entity Information Series A-2 Convertible preferred stock Outstanding nonredeemable series A-2 preferred stock or outstanding series A-2 preferred stock. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer. Note Receivable from Stockholder Represents details related to note receivable from stockholders by the entity. Condensed Consolidated Statements of Operations Statement [Table] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Statement Statement [Line Items] Costs and Expenses [Abstract] Costs and operating expenses: Research and Development Expense Development and technology Selling and Marketing Expense Selling and marketing General and Administrative Expense General and administrative Amortization of Intangible Assets Amortization of intangible assets Net income attributable to common stockholders, diluted Net Income (Loss) Available to Common Stockholders, Diluted Costs and Expenses Total costs and operating expenses Direct Operating Communications Costs Network access Direct Operating Costs Network operations Operating Income (Loss) Income from operations Nonoperating Income (Expense) Interest and other (expense) income, net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income before income taxes Income Tax Expense (Benefit) Income taxes Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net income Net income Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to non-controlling interests Net Income (Loss) Attributable to Parent Net income attributable to Boingo Wireless, Inc. Net income attributable to Boingo Wireless, Inc Net Income (Loss) Available to Common Stockholders, Basic Net income attributable to common stockholders, basic Net income per share attributable to common stockholders: Net income per share attributable to common stockholders: Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Revenue, Net Revenue Temporary Equity, Accretion to Redemption Value, Adjustment Accretion of convertible preferred stock Accretion of convertible preferred stock Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average shares used in computing net income per share attributable to common stockholders: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income including non-controlling interests to net cash provided by operating activities: Share-based Compensation Stock-based compensation Deferred Income Tax Expense (Benefit) Change in deferred income taxes Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities, net of effect of acquisition: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Accrued expenses and other liabilities Depreciation Depreciation and amortization of property and equipment Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities Increase (Decrease) in Restricted Cash (Increase) decrease in restricted cash Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Payments to Acquire Businesses, Net of Cash Acquired Contractual payments related to business acquisition Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities Payments to Noncontrolling Interests Payments to non-controlling interests Proceeds from Stock Options Exercised Proceeds from exercise of stock options Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Repayments of Long-term Capital Lease Obligations Payments of capital leases Cash and Cash Equivalents, Period Increase (Decrease) Net increase in cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash and cash equivalents Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information Interest Paid Cash paid for interest Income Taxes Paid Cash paid for taxes Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash investing and financing activities Capital Expenditures Incurred but Not yet Paid Property and equipment and software maintenance costs in accounts payable, accrued expenses and other liabilities Condensed Consolidated Statements of Cash Flows The business Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] The business Summary of significant accounting policies Accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued expenses and other liabilities Property and equipment Property, Plant and Equipment Disclosure [Text Block] Property and equipment Fair value measurement Fair Value Disclosures [Text Block] Fair value measurement Stockholders' equity Stockholders' Equity Note Disclosure [Text Block] Stockholders' equity Income taxes Income Tax Disclosure [Text Block] Income taxes Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and contingencies Stock incentive plans: Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Stock incentive plans: Additional Paid in Capital, Common Stock Additional paid in capital Earnings Per Share [Text Block] Net income per share attributable to common stockholders: Subsequent events: Subsequent Events [Text Block] Subsequent events: Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Amendment Description Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Class of Stock [Axis] Class of Stock [Domain] Series A Convertible preferred stock Series B Convertible preferred stock Series C Convertible preferred stock Assets [Abstract] Assets Assets, Current [Abstract] Current assets: Restricted Cash and Cash Equivalents, Current Restricted cash Accounts Receivable, Net, Current Accounts receivable, net of allowances of $221 and $107, respectively Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Deferred Tax Assets, Net, Current Deferred tax assets Assets, Current Total current assets Available-for-sale Securities, Current Marketable securities Property, Plant and Equipment, Net Property and equipment, net Goodwill Goodwill Deferred Tax Assets, Net, Noncurrent Deferred tax assets Other Assets, Noncurrent Other assets Assets Total assets Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net Liabilities and Equity [Abstract] Liabilities, convertible preferred stock and stockholders' equity (deficit) Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses and other liabilities Capital Lease Obligations, Current Current portion of capital leases Liabilities, Current Total current liabilities Deferred Revenue, Current Deferred revenue Deferred Revenue, Noncurrent Deferred revenue, net of current portion Other Liabilities, Noncurrent Other liabilities Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 9) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' equity (deficit): Common Stock, Value, Issued Common stock, $0.0001 par value; 34,900 shares authorized, 34,390 and 7,092 shares issued, 33,133 and 5,835 shares outstanding at June 30, 2011 and December 31, 2010, respectively Treasury Stock, Value Treasury stock at cost, 1,257 shares Treasury stock at cost, 1,257 shares Stockholders' Equity Note, Subscriptions Receivable Note receivable from stockholder Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total common stockholders' equity (deficit) Total common stockholders' equity (deficit) Stockholders' Equity Attributable to Noncontrolling Interest Non-controlling interests Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total stockholders' equity (deficit) Balance Balance Total stockholders' equity (deficit) Liabilities and Equity Total liabilities, convertible preferred stock and stockholders' equity (deficit) Total liabilities, convertible preferred stock and stockholders' equity (deficit) Temporary Equity [Abstract] Convertible preferred stock: Temporary Equity, Carrying Amount Total convertible preferred stock Condensed Consolidated Balance Sheets Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Treasury Stock, Shares Treasury stock, shares Allowance for Doubtful Accounts Receivable, Current Accounts receivable, allowances (in dollars) Temporary Equity, Par or Stated Value Per Share Convertible preferred stock, par value (in dollars per share) Temporary Equity, Shares Authorized Convertible preferred stock, shares authorized Temporary Equity, Shares Issued Convertible preferred stock, shares issued Temporary Equity, Shares Outstanding Convertible preferred stock, shares outstanding Temporary Equity, Liquidation Preference Convertible preferred stock, liquidation preference (in dollars) Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Shares, Outstanding Balance (in shares) Balance (in shares) Stock Issued During Period, Value, Stock Options Exercised Issuance of common stock upon exercise of stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Issuance of common stock upon exercise of stock options (in shares) Stockholders' Equity, Period Increase (Decrease) Stock Issued During Period, Shares, Period Increase (Decrease) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation expense Adjustments to Additional Paid in Capital, Increase in Carrying Amount of Redeemable Preferred Stock Accretion of convertible preferred stock Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Non-controlling interests Statement, Equity Components [Axis] Equity Component [Domain] Common Stock Additional Paid-in Capital Treasury Stock Accumulated Deficit Non-controlling Interests Total Convertible Preferred Stock Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) Stock Issued During Period Value Exercise and Conversion of Preferred Stock Warrants Issuance of common stock upon exercise and conversion of preferred stock warrants Value of the common stock issued during the period as a result of exercise and conversion of the preferred stock warrants. Stock Issued During Period Shares Exercise and Conversion of Preferred Stock Warrants Issuance of common stock upon exercise and conversion of preferred stock warrants (in shares) Number of common stocks issued upon the exercise and conversion of the preferred stock warrants during the current period. Stock Issued During Period Value Exercise of Common Stock Warrants. Issuance of common stock upon exercise of common stock warrants Value of the common stock issued during the period as a result of the exercise of common stock warrants. Stock Issued During Period Share Exercise of Common Stock Warrants Issuance of common stock upon exercise of common stock warrants (in shares) Value of the common stock issued during the period as a result of the exercise of common stock warrants. Issuance of common stock upon initial public offering Stock Issued During Period, Value, New Issues Issuance of common stock upon initial public offering (in shares) Stock Issued During Period, Shares, New Issues Offering costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Common stock warrants Common Stock Warrants Disclosure [Text Block] Common stock warrants Represents the details related to preferred and common stock warrants in one text block. Change in Fair Value of Preferred Stock Warrants Change in fair value of preferred stock warrants This element represents the change in fair value of preferred stock warrants during the reporting period. Proceeds from Issuance Initial Public Offering Proceeds from issuance of common stock upon initial public offering Payments of Stock Issuance Costs Offering costs Capital Lease Obligations Incurred Acquisition of software and equipment under capital leases Fair value of preferred stock warrant liability, if converted Dilutive Securities, Effect on Basic Earnings Per Share Issuance of common stock upon conversion of preferred stock (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Issuance of common stock upon conversion of preferred stock Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments Proceeds from issuance of common stock upon exercise of preferred stock warrants Proceeds from Warrant Exercises Cash and cash equivalents and marketable securities Cash Equivalents, and Marketable Securities [Text Block] Cash and cash equivalents and marketable securities Preferred Stock, Value, Issued Preferred stock, $0.0001 par value, 5,000 shares authorized, no shares issued and outstanding Conversion of Stock, Shares Converted Conversion of convertible preferred stock into common stock Exercise and Conversion of Preferred Stock Warrants into Common Stock Exercise and conversion of preferred stock warrants into common stock The value of the common stock [noncash or part noncash] in the exercise and conversion of preferred stock warrants into common stock. Conversion of Stock, Amount Issued Conversion of convertible preferred stock into common stock Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding