Debt Disclosure [Abstract] Schedule of ST and LT Debt [Table] Schedule of ST and LT Debt [Table] Schedule of ST and LT Debt [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Notes Payable Notes Payable, Other Payables [Member] Schedule of ST and LT Debt [Line Items] Schedule of ST and LT Debt [Line Items] [Line Items] for Schedule of ST and LT Debt [Table] Notes payable Notes payable, before discount Notes payable, before discount Less discount Debt Instrument, Unamortized Discount Net carrying value of notes payable Notes Payable Notes payable, current portion Notes Payable, Current Notes payable — less current portion Notes Payable, Noncurrent Revolving line of credit, current portion Line of Credit, Current Revolving line of credit, less current portion Long-term Line of Credit, Noncurrent Net carrying value of total debt Debt, Long-term and Short-term, Combined Amount Total debt, current portion Long-term Debt, Current Maturities Total debt, less current portion Long-term Debt, Excluding Current Maturities Earnings Per Share [Abstract] Net Loss Per Share Earnings Per Share [Text Block] Statement of Financial Position [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term investments Available-for-sale Securities, Current Accounts receivable, net Accounts Receivable, Net, 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 Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Goodwill Goodwill Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT) Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued and other current liabilities Other Accrued Liabilities, Current Accrued federal fees Accrued Federal Fees Accrued Federal Fees Sales tax liability Sales and Excise Tax Payable, Current Revolving line of credit Notes payable Capital leases Capital Lease Obligations, Current Deferred revenue Deferred Revenue, Current Total current liabilities Liabilities, Current Revolving line of credit — less current portion Sales tax liability — less current portion Sales and Excise Taxes Payable, Noncurrent Sales and excise taxes payable, noncurrent Capital leases — less current portion Capital Lease Obligations, Noncurrent Convertible preferred and common stock warrant liabilities Derivative Liability, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 10) Commitments and Contingencies Stockholders’ equity (deficit): Stockholders' Equity Attributable to Parent [Abstract] Convertible preferred stock, $0.001 par value; no shares authorized, issued and outstanding as of September 30, 2014; 125,115 shares authorized, 122,216 shares issued and outstanding as of December 31, 2013 Convertible Preferred Stock, Nonredeemable or Redeemable, Issuer Option, Value Preferred stock, $0.001 par value; 5,000 shares authorized, no shares issued and outstanding as of September 30, 2014; no shares authorized, issued and outstanding as of December 31, 2013 Preferred Stock, Value, Outstanding Common stock, $0.001 par value; 450,000 shares authorized, 48,473 shares issued and outstanding as of September 30, 2014; 200,000 shares authorized, 5,494 shares issued and outstanding as of December 31, 2013 Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity (deficit) Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity (deficit) Liabilities and Equity Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Stock options Employee Stock Option [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class of Stock Class of Stock [Line Items] Options Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding as of December 31, 2013 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options granted (weighted average grant date fair value of $5.72 per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Options forfeited or expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Outstanding as of September 30, 2014 Weighted average grant date fair value of options granted (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Options Outstanding, Weighted Average Exercise Price [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding as of December 31, 2013, weighted average exercise price (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options granted, weighted average exercise price (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Options exercised, weighted average exercise price (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options forfeited or expired, weighted average exercise price (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Outstanding as of September 30, 2014, weighted average exercise price (in USD per share) Outstanding as of September 30, 2014, weighted average remaining contractual life Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding as of September 30, 2014, aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Fair market value of common stock Share Price Unrecognized compensation cost, stock options Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Unrecognized compensation cost, period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Short-term Investments [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Treasury bills US Treasury and Government [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Schedule of Short-Term Investments [Line Items] Schedule of Available-for-sale Securities [Line Items] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Gross Unrealized Gains Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain Gross Unrealized Losses Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss Aggregate Fair Value Short-term investments remaining maturity Available-for-sale investments remaining maturity Available-for-sale investments remaining maturity Debt Disclosure Debt Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Convertible Preferred Stock Convertible Preferred Stock [Member] Series A-2 Convertible Preferred Stock Series A Preferred Stock [Member] Common Stock Common Stock [Member] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Class of Warrant or Right, Fair Value [Roll Forward] Class of Warrant or Right, Fair Value [Roll Forward] Class of Warrant or Right, Fair Value [Roll Forward] Balance as of beginning of period Changes in fair value of warrants Fair Value Adjustment of Warrants Exercise of Series A-2 convertible preferred stock warrants Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Issuance of common stock warrants in connection with debt agreement Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances Reclassified to additional paid-in capital Warrants Liabilities Reclassed to APIC Warrants Liabilities Reclassed to APIC upon IPO of the Company. Balance as of end of period Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Class of Warrant or Right [Table] Class of Warrant or Right [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2014 Loan and Security Agreement Loan and Security Agreement 2014 [Member] 2014 Loan and Security Agreement Series D-2 Convertible Preferred Stock Series D Preferred Stock [Member] Class of Warrant or Right Class of Warrant or Right [Line Items] Warrants outstanding Class of Warrant or Right, Outstanding Outstanding warrants exercise price, weighted-average Outstanding Warrants Exercise Price, Weighted-Average Outstanding Warrants Exercise Price, Weighted-Average Warrant expiration date Warrant Expiration Date1 Warrant Expiration Date1 Common stock warrants converted from convertible preferred stock warrants Common stock warrants converted from convertible preferred stock warrants Common stock warrants converted from convertible preferred stock warrants Shares issued from warrant exercises Conversion of Stock, Shares Issued Shares called by outstanding warrants Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrants outstanding, exercise price (in USD per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Reclass of warrants liabilities to additional paid-in capital upon initial public offering Warrants exercised, share Class of Warrant or Right, Warrants Exercised Class of Warrant or Right, Warrants Exercised Reverse stock split, conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Warrants vested Class of Warrant or Right, Warrants Vested Class of Warrant or Right, Warrants Vested Schedule of Assets and Liabilities Carried at Fair Value Fair Value, by Balance Sheet Grouping [Table Text Block] Reconciliation of Stock Warrants Measured at Fair Value Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Fair Value Disclosures Fair Value Disclosures [Text Block] Cash, Cash Equivalents, and Short-term Investments [Abstract] Cash, Cash Equivalents, and Short-term Investments [Text Block] Cash, Cash Equivalents, and Short-term Investments [Text Block] Net loss Net Income (Loss) Attributable to Parent Weighted-average shares used in computing basic and diluted net loss per share (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Basic and diluted net loss per share (in USD per share) Earnings Per Share, Basic and Diluted Initial Public Offering [Axis] Initial Public Offering [Axis] Initial Public Offering [Axis] Initial Public Offering [Domain] Initial Public Offering [Domain] [Domain] for Initial Public Offering [Axis] IPO [Member] IPO [Member] Series B-2 Convertible Preferred Stock Series B Preferred Stock [Member] Series C-2 Convertible Preferred Stock Series C Preferred Stock [Member] Shares Issued Preferred Stock, Shares Issued Convertible preferred stock, conversion ratio to common stock Convertible Preferred Stock, Shares Issued upon Conversion Shares of common stock converted into Conversion of Stock, Shares Converted Common Stock, shares authorized Common Stock, Shares Authorized Preferred Stock, shares authorized Preferred Stock, Shares Authorized Common Stock, par value Common Stock, Par or Stated Value Per Share Preferred Stock, par value Preferred Stock, Par or Stated Value Per Share Common Stock, shares issued Common Stock, Shares, Issued Remainder of 2014 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2015 Long-term Debt, Maturities, Repayments of Principal in Year Two 2016 Long-term Debt, Maturities, Repayments of Principal in Year Three 2017 Long-term Debt, Maturities, Repayments of Principal in Year Four 2018 Long-term Debt, Maturities, Repayments of Principal in Year Five 2019 Long-term Debt, Maturities, Repayments of Principal after Year Five Total Long-term Debt, Gross Intangible Assets, Net (Excluding Goodwill) [Abstract] Amortization of Intangible Assets Amortization of Intangible Assets Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] ESPP Employee Stock [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Share-based Compensation Arrangement by Share-based Payment Award Share-based Compensation Arrangement by Share-based Payment Award [Line Items] IPO price per share Shares Issued, Price Per Share Shares allowed to purchase under both offering periods maximum number of shares per purchase date maximum number of shares an employee is allowed to purchase on a purchase date under all offerings. Maximum employee subscription rate, percentage of pre-tax earnings Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Purchase price of shares, percentage of the fair market value of the Company's common stock Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Maximum number of shares per employee per purchase period Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee Shares of common stock reserved for future issuance Common Stock, Capital Shares Reserved for Future Issuance Automatic annual increase in common stock reserved for issuance, percentage Common Stock, Capital Shares Reserved for Future Issuance, Annual Increase, Percentage Common Stock, Capital Shares Reserved for Future Issuance, Annual Increase, Percentage Maximum annual increase of shares reserved Share-based Compensation Arrangement by Share-based Payment Award, Maximum Annual Increase of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Maximum Annual Increase of Shares Authorized Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Cash and Cash Equivalents [Abstract] Schedule of Cash and Cash Equivalents [Table] Schedule of Cash and Cash Equivalents [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash Cash Money market funds Money Market Funds, at Carrying Value Total cash and cash equivalents Income Tax Disclosure [Abstract] Provision for income taxes Income Tax Expense (Benefit) Financial Statement Components [Abstract] Financial Statement Components [Abstract] Financial Statement Components Supplemental Balance Sheet Disclosures [Text Block] 2004 Equity Incentive Plan Equity Incentive Plan 2004 [Member] 2004 Equity Incentive Plan [Member] 2014 Equity Incentive Plan Equity Incentive Plan 2014 [Member] 2014 Equity Incentive Plan [Member] Employee Stock Options Restricted Stock Units Restricted Stock Units (RSUs) [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Tranche One Share-based Compensation Award, Tranche One [Member] Share-based Compensation Award, Tranche One [Member] Tranche Two Share-based Compensation Award, Tranche Two [Member] Share-based Compensation Award, Tranche Two [Member] Number of shares authorized for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award vesting, percentage of award Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Expiration period upon termination of employment Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period of Vested Award Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period of Vested Award Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Warrants Warrant [Member] Fair value of stock Expected dividends Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Dividend Rate Risk-free interest rate Share-based Goods and Nonemployee Services Transaction, Valuation Method, Risk Free Interest Rate Volatility Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Volatility Rate Organization, Consolidation and Presentation of Financial Statements [Abstract] Initial Public Offering [Table] Initial Public Offering [Table] [Table] Initial Public Offering [Table] [Table] Initial Public Offering [Line Items] Initial Public Offering [Table] [Line Items] [Line Items] for Initial Public Offering [Table] [Table] Shares sold to underwriters Shares Issued To Underwriters Under Over Allotment Options Shares Issued To Underwriters Under Over Allotment Options Aggregate proceeds from IPO after deducting underwriters' discounts and commissions Proceeds from Issuance Initial Public Offering Underwriters' discounts and commissions Payments of Stock Issuance Costs, Underwriters' Discounts and Commissions Payments of Stock Issuance Costs, Underwriters' Discounts and Commissions Offering expenses Stock Issuance Costs Stock Issuance Costs Payments for offering expenses Payments of Stock Issuance Costs Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Tentative FCC civil penalty [Member] Subsequent Event [Member] Subsequent Event Subsequent Event [Line Items] Subsequent Event, Date Subsequent Event, Date Tentative FCC civil penalty Accrued charge by the Federal Communications Commission Accrued charge by the Federal Communications Commission General and administrative General and Administrative Expense Shares Reserced For Future Issuance [Axis] shares reserved for future issuance [Axis] shares reserved for future issuance [Axis] Reserved Shares Types shares reserved for future issuance [Domain] [Domain] for shares reserved for future issuance [Axis] Employee Stock Purchase Plan Statement of Cash Flows [Abstract] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Provision for doubtful accounts Provision for Doubtful Accounts Stock-based compensation Share-based Compensation Loss on the disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Non-cash interest expense Amortization of Financing Costs and Discounts Changes in fair value of convertible preferred and common stock warrant liabilities Accretion of discounts on short-term investments Accretion (Amortization) of Discounts and Premiums, Investments Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Noncurrent Assets Accounts payable Increase (Decrease) in Accounts Payable, Trade Accrued and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Current Liabilities Increase (Decrease) in Accrued Liabilities and Other Current Liabilities Accrued federal fees and sales tax liability Increase (Decrease) in Property and Other Taxes Payable Deferred revenue Increase (Decrease) in Deferred Revenue Other liabilities Increase (Decrease) in Other Noncurrent Liabilities Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Restricted cash Increase (Decrease) in Restricted Cash Purchase of short-term investments Payments to Acquire Available-for-sale Securities Proceeds from sale of short-term investments Proceeds from Sale of Short-term Investments Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Net proceeds from initial public offering, net of payments for offering costs Net Proceeds from Issuance Initial Public Offering The cash inflow associated with the amount received from entity's first offering of stock to the public, net of offering costs paid. Payments for deferred offering costs Net proceeds from issuance of convertible preferred stock Proceeds from Issuance of Convertible Preferred Stock Proceeds from exercise of common stock options and warrants Proceeds from Stock Options Exercised Proceeds from notes payable Proceeds from Issuance of Secured Debt Repayments of notes payable Repayments of Secured Debt Payments of capital leases Repayments of Long-term Capital Lease Obligations Proceeds from revolving line of credit Proceeds from Lines of Credit Repayments on revolving line of credit Repayments of Lines of Credit Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Beginning of period End of period Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Equipment obtained under capital lease Noncash or Part Noncash Acquisition, Fixed Assets Acquired Equipment purchased and unpaid at period-end Capital Expenditures Incurred but Not yet Paid Deferred initial public offering costs incurred but unpaid at period-end Deferred Stock Offering Costs Incurred but Not Yet Paid Deferred Stock Offering Costs Incurred but Not Yet Paid Reclass of deferred initial public offering costs to additional paid-in capital Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Net cashless exercise of preferred stock warrants to Series A-2 convertible preferred stock Conversion of Stock, Amount Issued Vesting of early exercised stock options Transfer from Liability to Equity Upon Vesting of Options Exercised Early Transfer from Liability to Equity Upon Vesting of Options Exercised Early Conversion of convertible preferred stock to common stock upon initial public offering Conversion of Stock, Amount Converted Conversion of accrued federal fees to note payable, net Conversion of accrued federal fees to note payable, net Conversion of accrued federal fees to note payable, net Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Initial Public Offering Initial public offering [Policy Text Block] Initial public offering [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Computer and Network Equipment Computer Equipment [Member] Computer Software Computer Software, Intangible Asset [Member] Development Costs Software Development [Member] Furniture and Fixtures Furniture and Fixtures [Member] Leasehold Improvements Leasehold Improvements [Member] Property, Plant and Equipment Property, Plant and Equipment [Line Items] Property and equipment Property, Plant and Equipment, Gross Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Segment Reporting [Abstract] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES International International [Member] International region Revenues from External Customers and Long-Lived Assets Revenues from External Customers and Long-Lived Assets [Line Items] Revenue Revenue, Net Property and equipment, net Schedule of Revenues and Property and Equipment by Geographic Region Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Subsequent Event Subsequent Events [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Restricted stock units Awards granted, shares Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Weighted average grant date fair value (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Schedule of Short-Term Investments Available-for-sale Securities [Table Text Block] Fair Value Measurements Measured on a Recurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Money Market Funds Money Market Funds [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Warrant Liability Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value Measurements Measured on a Recurring Basis Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets Short-term Investments [Abstract] U.S. Treasury bills Short-term Investments Cash equivalents: Money market funds Cash and Cash Equivalents, Fair Value Disclosure Liabilities Liabilities [Abstract] Convertible preferred stock warrant liabilities Depreciation and amortization expense Depreciation Income Tax Disclosure Income Tax Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Promissory Note Promissory Note [Member] Promissory Note [Member] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] USF obligations [Member] USF obligations [Member] USF obligations [Member] Potential Obligation for State Taxes on Usage Based Fees [Member] Potential Obligation for State Taxes on Usage Based Fees [Member] Potential Obligation for State Taxes on Usage Based Fees [Member] Accrual Period [Axis] Accrual Period [Axis] Accrual period for federal fees Accrual Period [Domain] Accrual Period [Domain] [Domain] for Accrual period for federal fees Periods Prior To 2008 Periods Prior To 2008 [Member] Periods Prior To 2008 [Member] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] NobelBiz, Inc. Patent Infringement Case NobelBiz, Inc Patent Infringement Case [Member] NobelBiz, Inc Patent Infringement Case [Member] Unusual or Infrequent Item [Axis] Unusual or Infrequent Item [Axis] Unusual or Infrequent Item [Domain] Unusual or Infrequent Item [Domain] Reversal of sales tax liability Unusual or Infrequent Item [Member] Loss Contingencies Loss Contingencies [Line Items] Universal Services Fund Liability [Abstract] Universal Services Fund Liability [Abstract] Universal Services Fund Liability [Abstract] Maximum USF reimbursement payments Maximum USF Reimbursement Payments Maximum USF Reimbursement Payments Promissory note issued Debt Instrument, Face Amount Promissory note, carrying value Expenses related to USF obligations Cost of Revenue Interest and penalty expense related to unpaid USF obligations interest and penalty expense interest and penalty expense Payment for USF contributions payment remitted for the federal Universal Service Fund contributions payment remitted for the federal Universal Service Fund contributions State and Local Taxes and Surcharges [Abstract] State and Local Taxes and Surcharges [Abstract] State and Local Taxes and Surcharges [Abstract] Accrued sales tax liability Payments for state and local taxes on usage-based fees Payments for Usage-based Fees Payments for Usage-based Fees Expense recognized for estimated sales tax liability on usage-based fees Reversal of sales tax liability Loss Contingency Accrual, Period Increase (Decrease) Reversal of sales tax liability, net loss per share impact Unusual or Infrequent Item, Earnings Per Share Impact, Gross Legal Matters Loss Contingency, Information about Litigation Matters [Abstract] Number of lawsuits Loss Contingency, Number of Plaintiffs Stockholders' Deficit Shareholders' Equity and Share-based Payments [Text Block] Restricted Cash [Abstract] Restricted Cash [Abstract] Schedule of Restricted Cash and Cash Equivalents [Table] Schedule of Restricted Cash and Cash Equivalents [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Letter Of Credit Related To Lease Obligation [Member] Letter Of Credit Related To Lease Obligation [Member] Letter of credit related to lease obligation Letter Of Credit Related To Insurance Policy [Member] Letter Of Credit Related To Insurance Policy [Member] Letter of credit related to insurance policy Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other Noncurrent Assets [Member] Other Noncurrent Assets [Member] Restricted Cash [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Restricted cash Restricted Cash and Cash Equivalents Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Remainder of 2014 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2019 and beyond Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Schedule of Debt Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Maturities of Debt Schedule of Maturities of Long-term Debt [Table Text Block] DEI [Abstract] DEI [Abstract] Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol 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 (Q1,Q2,Q3,FY) Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Schedule of Intangible Assets Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Schedule of Expected Future Amortization Expense of Intangible Assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Geographical Information Segment Reporting Disclosure [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] Cost of Revenue Cost of Sales [Member] Research and Development Research and Development Expense [Member] Selling and Marketing Selling and Marketing Expense [Member] General and Administrative General and Administrative Expense [Member] Stock-based Compensation Expense Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense Accounts Receivable, Net [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Billing Status, Type [Axis] Billing Status, Type [Axis] Receivables Billing Status [Domain] Receivables Billing Status [Domain] Billed Revenues Billed Revenues [Member] Unbilled Revenues, net of advance client deposits Unbilled Revenues [Member] Accounts Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Trade accounts receivable Accounts Receivable, Gross, Current Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Accounts receivable, net Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net [Abstract] Gross Capital Leased Assets, Gross Less: accumulated depreciation and amortization Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation Total Capital Leases, Balance Sheet, Assets by Major Class, Net Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Developed technology Developed Technology Rights [Member] Customer relationships Customer Relationships [Member] Domain names Internet Domain Names [Member] Non-compete agreements Noncompete Agreements [Member] Acquired Finite-Lived Intangible Assets Acquired Finite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Schedule of Valuation Assumptions, Warrants Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block] Schedule of Common Stock Reserved for Future Issuance Summary of Common Stock Reserved for Future Issuance [Table Text Block] Summary of Common Stock Reserved for Future Issuance [Table Text Block] Schedule of Stock Option Activities Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Stock-based Compensation Expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Schedule of Weighted-Average Valuation Assumptions, Stock Option and ESPP Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Commitments and Contingencies Disclosure Commitments and Contingencies Disclosure [Text Block] Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Property and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Capital Leased Property and Equipment Schedule of Capital Leased Assets [Table Text Block] Schedule of Accrued and Other Current Liabilities Other Current Liabilities [Table Text Block] Schedule of Restricted Stock [Table] Schedule of Restricted Stock [Table] Schedule of Restricted Stock [Table] Restricted Common Stock Restricted Stock [Member] Type of Restriction [Axis] Type of Restriction [Axis] Type of Restriction [Axis] Type of Restriction [Domain] Type of Restriction [Domain] [Domain] for Type of Restriction [Axis] SoCoCare Face It, Corp. [Member] Face It, Corp. [Member] Early Exercised Stock Options Early Exercised Stock Options [Member] Early Exercised Stock Options [Member] Schedule of Restricted Stock [Line Items] Schedule of Restricted Stock [Line Items] [Line Items] for Schedule of Restricted Stock [Table] Restricted common stock issued in period, shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted common stock, forfeiture rights lapsed during October 2014, percentage Share-based Compensation Arrangement by Share-based Payment Award, Forfeiture Rights Expiring One Year After Acquisition, Percentage of Award Share-based Compensation Arrangement by Share-based Payment Award, Forfeiture Rights Expiring One Year After Acquisition, Percentage of Award Restricted common stock, forfeiture rights expiring two years after acquisition, percentage Share-based Compensation Arrangement by Share-based Payment Award, Forfeiture Rights Expiring Two Years After Acquisition, Percentage of Award Share-based Compensation Arrangement by Share-based Payment Award, Forfeiture Rights Expiring Two Years After Acquisition, Percentage of Award Aggregate grant date fair value Stock Granted, Value, Share-based Compensation, Gross Restricted common stock outstanding, shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Requisite service period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Liability related to early excercised stock options Share-based Compensation Arrangement by Share-based Payment Award, Recorded Liability Share-based Compensation Arrangement by Share-based Payment Award, Recorded Liability Income Statement [Abstract] Cost of revenue Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense Sales and marketing Selling and Marketing Expense Total operating expenses Operating Expenses Loss from operations Operating Income (Loss) Other income (expense), net: Nonoperating Income (Expense) [Abstract] Change in fair value of convertible preferred and common stock warrant liabilities Interest expense Interest Expense Interest income and other Other Nonoperating Income (Expense) Total other income (expense), net Nonoperating Income (Expense) Loss before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Net loss Net loss per share: Earnings Per Share, Basic and Diluted [Abstract] Basic and diluted (in USD per share) Shares used in computing net loss per share: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic and diluted (in shares) Comprehensive Loss: Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Change in unrealized gain on short-term investments, net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Preferred Stock, shares issued Preferred Stock, shares outstanding Preferred Stock, Shares Outstanding Common Stock, shares outstanding Common Stock, Shares, Outstanding Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Convertible preferred stock (on an as converted post reverse stock split basis) Common stock subject to repurchase or forfeiture Antidilutive Securities Excluded from Computation of Earnings Per Share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from calculation of diluted net loss per share Antidilutive securities excluded from EPS calculation Antidilutive securities excluded from EPS calculation Accrued expenses Accrued Liabilities, Current Accrued compensation and benefits Employee-related Liabilities, Current Accrued and other current liabilities Accrued Liabilities and Other Current Liabilities Accrued Liabilities and Other Current Liabilities Other Commitments [Table] Other Commitments [Table] Other Commitments [Axis] Other Commitments [Axis] Commitments Type [Domain] Other Commitments [Domain] Corporate Office Lease Corporate Office Lease [Member] Corporate Office Lease [Member] Colocation Hosting Service Agreement Colocation Hosting Service Agreement [Member] Colocation Hosting Service Agreement [Member] Capital Lease Obligations [Member] Capital Lease Obligations [Member] Other Commitments [Line Items] Other Commitments [Line Items] Additional commitment for modified operating lease Operating Leases, Future Minimum Payments Due Term of purchase obligation Term of Unrecorded Unconditional Purchase Obligation Purchase obligation Purchase Obligation Capital lease obligations incurred Capital Lease Obligations Incurred Capital lease future minimum payments, remainder of 2014 Capital Leases, Future Minimum Payments, Remainder of Fiscal Year Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Loan and Security Agreement Loan and Security Agreement 2013 [Member] 2013 Loan and Security Agreement Tranche One Loan and Security Agreement 2014, Tranche One [Member] 2014 Loan and Security Agreement, Tranche One [Member] Revolving Credit Facility Revolving Credit Facility [Member] Term Loan Secured Debt [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Prime Rate Prime Rate [Member] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Debt Instrument Debt Instrument [Line Items] Credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Balance outstanding allowed, description Line of Credit Facility, Borrowing Capacity, Description Debt instrument, basis spread Debt Instrument, Basis Spread on Variable Rate Credit facility, amount borrowed Line of Credit Facility, Fair Value of Amount Outstanding Warrants issued Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Discount on debt Warrants outstanding upon IPO Covenant terms, minimum required cash on deposit at lender Debt Instrument, Covenant Terms, Minimum Required Cash on Deposit at Lender Debt Instrument, Covenant Terms, Minimum Required Cash on Deposit at Lender Number of lenders Debt Agreement, Number of Lenders Debt Agreement, Number of Lenders Credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Credit facility, minimum incremental borrowing amount Line of credit facility, minimum incremental borrowing amount Line of credit facility, minimum incremental borrowing amount Payments of debt issuance costs Payments of Debt Issuance Costs Term loan, minimum interest rate Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum Debt, payment terms Debt Instrument, Payment Terms Class of warrant or right, vesting period (in years) Class of warrant or right, vesting period (in years) Class of warrant or right, vesting period (in years) Warrants vested, shares Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Vested in Period Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Vested in Period Warrants unvested, shares Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Unvested Class of Warrant or Right, Number of Securities Called by Warrants or Rights, Unvested Promissory note, stated interest rate Debt Instrument, Interest Rate, Stated Percentage Promissory note, number of monthly payments Debt Instrument, Number of Monthly Payments Debt Instrument, Number of Monthly Payments Expected term (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Basic and Diluted Net Loss Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Net Loss Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Intangible Assets Disclosure Intangible Assets Disclosure [Text Block]