Document and Entity Information Statement [Table] Statement [Line Items] Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Document Fiscal Year Focus Entity Voluntary Filers Entity Well-known Seasoned Issuer Document Fiscal Period Focus Entity Common Stock, Shares Outstanding Entity Public Float Consolidated Balance Sheets Assets. Assets Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of the period Cash and cash equivalents at beginning of the period Cash and cash equivalents Available-for-sale Securities, Current Short-term investments Accounts Receivable, Net, Current Accounts receivable, net of allowance of $2,422 and $1,812, respectively Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, net Property and equipment, net Goodwill. Goodwill Beginning balance Goodwill Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Other Assets, Noncurrent Other assets Assets Total assets Liabilities and Equity [Abstract] Liabilities and stockholders? equity Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Represents carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered, excluding accrued compensation. Also includes aggregate carrying amount of liabilities not separately disclosed in the balance sheet. Used to reflect the current portion of liabilities (due within one year or within the normal operating cycle if longer). Accrued Liabilities And Other Liabilities Excluding Accrued Compensation Current Accrued expenses and other current liabilities Employee-related Liabilities, Current Accrued compensation Long-term Debt, Current Maturities Less: current portion Long-term bank and other debt-current Liabilities, Current Total current liabilities Other Liabilities, Noncurrent Other liabilities Deferred Income Tax Liabilities, Net Deferred taxes Long-term Debt, Excluding Current Maturities Long term bank and other debt Long term bank and other debt, net Commitments and Contingencies. Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Common Stock, Value, Issued Common stock, $0.001 par value; 75,000,000 shares authorized as of December 31, 2016 and 2015; 46,201,563 shares and 38,524,922 shares issued and outstanding as of December 31, 2016 and 2015, respectively Additional Paid in Capital, Common Stock Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Stockholders' Equity Attributable to Parent Balance as of end of the period Balance as of beginning of the period Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Allowance for Doubtful Accounts Receivable, Current Allowance of Accounts receivable Common Stock, Par or Stated Value Per Share Common stock par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Number of common stock shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Consolidated Statements of Operations Revenues Revenue Cost of Revenue Cost of revenue Gross Profit Gross profit Operating Expenses [Abstract] Operating expenses: Marketing and Advertising Expense Advertising and marketing Selling Expense Sales Research and Development Expense Technology and development Legal Fees Legal The amount of expense incurred for regulatory fees. Regulatory Expenses Regulatory Business Combination, Acquisition Related Costs Acquisition related costs General and Administrative Expense General and administrative Depreciation, Depletion and Amortization Depreciation and amortization Operating Income (Loss) Loss from operations Represents the amortization of warrants and loss on extinguishment of debt. Amortization of Warrants and Loss on Extinguishment of Debt Amortization of warrants and loss on extinguishment of debt Interest Income (Expense), Net Interest expense, net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Net loss before taxes Income Tax Expense (Benefit) Income tax provision Income tax provision Net Income (Loss) Attributable to Parent Net loss Net loss Earnings Per Share, Basic and Diluted Net loss per share, basic and diluted Weighted Average Number of Shares Outstanding, Basic and Diluted Weighted-average shares used to compute basic and diluted net loss per share Consolidated Statements of Comprehensive (Loss) Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Other comprehensive income, net of tax Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Net change in unrealized gains (losses) on available-for-sale securities Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income (loss), net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Consolidated Statement of Stockholders' Equity Increase (Decrease) in Temporary Equity [Roll Forward] Temporary Equity Temporary Equity, Carrying Amount, Attributable to Parent Balance as of end of the period Balance as of beginning of the period Temporary equity, carrying amount Temporary Equity, Shares Outstanding Balance as of end of the period (in shares) Balance as of beginning of the period (in shares) Temporary equity, shares outstanding Shares Outstanding Temporary Equity, Stock Issued During Period, Value, New Issues Issuance of Series F preferred stock, net of issuance costs Number of new shares of stock classified as temporary equity issued during the period. Temporary Equity Stock Issued During Period Shares New Issues Number of new shares issued during period Issuance of Series F preferred stock, net of issuance costs (in shares) Temporary Equity, Accretion to Redemption Value Accretion of Seried F preferred stock to redemption amount Temporary Equity, Accretion of Dividends Preferred dividend Represents the amount of preferred dividend retired and converted. Preferred Dividends Retired And Converted Preferred dividends retired and converted to Series F preferred stock Represents the number of shares issued as a result of the preferred dividend retired and converted. Preferred Dividends Retired And Converted, Shares Preferred dividends retired and converted to Series F preferred stock (in shares) Temporary Equity impact of the value of stock that has been repurchased and retired during the period. Temporary Equity, Stock Repurchased During Period, Value Repurchase of convertible preferred and common stock Number of shares that have been repurchased during the period. Temporary Equity Stock Repurchased During Period, Shares Repurchase of convertible preferred and common stock (in shares) Represents the value of the convertible preferred stock that was converted during the period to shares of common stock. Temporary Equity, Value, Conversion of Convertible Preferred Stock Conversion of convertible preferred stock Represents the number of shares of convertible preferred stock that was converted during the period to shares of common stock. Temporary Equity, Shares, Conversion of Convertible Preferred Stock Conversion of convertible preferred stock (in shares) Represents the value of the redeemable common stock that was converted during the period to shares of common stock. Temporary Equity, Value, Conversion of Redeemable Common Stock Conversion of redeemable common stock Represents the number of shares of redeemable common stock that was converted during the period to shares of common stock. Temporary Equity, Shares, Conversion of Redeemable Common Stock Conversion of redeemable common stock (in shares) Increase (Decrease) in Stockholders' Equity [Roll Forward] Stockholders' Equity Shares, Outstanding Balance as of end of the period (in shares) Balance as of beginning of the period (in shares) Represents the adjustment to additional paid in capital, accretion of preferred stock to redemption value. Adjustment to Additional Paid In Capital, Accretion of Preferred Stock To Redemption Value Accretion of Seried F preferred stock to redemption amount Preferred Stock, Accretion of Redemption Discount Preferred dividend Adjustments to Additional Paid in Capital, Warrant Issued Warrants issued Fair value of warrants issued, resulting in an increase to additional paid in capital Stock Repurchased and Retired During Period, Value Repurchase of convertible preferred and common stock Stock Repurchased and Retired During Period, Shares Repurchase of convertible preferred and common stock (in shares) Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock option exercised (in shares) Exercise of stock options (in shares) Value of stock issued as a result of the exercise of warrants. Stock Issued During Period, Value, Exercise of Warrants Exercise of warrants Number of shares of stock for which warrants were exercised during the period. Stock Issued During Period, Shares, Exercise of Warrants Exercise of warrants (in shares) Stock Issued During Period, Value, Acquisitions Issuance of stock in acquisition Stock Issued During Period, Shares, Acquisitions Issuance of stock in acquisition (in shares) Stock Issued During Period, Value, New Issues Issuance of stock Stock Issued During Period, Shares, New Issues Issuance of stock under IPO (in shares) Issuance of stock (in shares) The gross value of stock issued during the period upon the conversion of convertible preferred stock. Stock Issued During Period, Value, Conversion of Convertible Preferred Stock Conversion of convertible preferred stock Number of shares issued during the period as a result of the conversion of convertible preferred stock. Stock Issued During Period, Shares, Conversion of Convertible Preferred Stock Conversion of convertible preferred stock (in shares) The gross value of stock issued during the period upon the conversion of redeemable common stock. Stock Issued During Period, Value, Conversion of Redeemable Common Stock Conversion of redeemable common stock Number of shares issued during the period as a result of the conversion of redeemable common stock. Stock Issued During Period, Shares, Conversion of Redeemable Common Stock Conversion of redeemable common stock (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss), net of tax Represents the stock issuance costs incurred. Stock issuance cost Stock issuance cost in connection with IPO Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows used in operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Provision for Doubtful Accounts Allowance for doubtful accounts Share-based Compensation Stock-based compensation Deferred Income Tax Expense (Benefit) Deferred income taxes Accretion Expense Accretion of interest Fair Value Adjustment of Warrants Amortization of warrants Non-cash fair value adjustment of warrants Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Other Operating Assets Other assets Increase (Decrease) in Accounts Payable Accounts payable The increase (decrease) during the reporting period in the aggregate amount of of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered, excluding accrued compensation. Also includes the increase (decrease) during the reported period in the aggregate carrying amount of liabilities not separately disclosed in the balance sheet. Used to reflect the current portion of liabilities (due within one year or within the normal operating cycle if longer). Increase Decrease In Accrued Liabilities And Other Current Liabilities Excluding Accrued Compensation Accrued expenses and other current liabilities Increase (Decrease) in Employee Related Liabilities Accrued compensation Increase (Decrease) in Other Noncurrent Liabilities Other liabilities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows provided by (used in) investing activities: Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Payments to Acquire Software Purchase of internal software Payments to Acquire Available-for-sale Securities Purchase of marketable securities Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from the liquidation/maturity of marketable securities Payments to Acquire Businesses, Net of Cash Acquired Acquisition of business, net of cash acquired Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows provided by financing activities: Proceeds from Stock Options Exercised Net proceeds from the exercise of stock options Proceeds from Issuance of Convertible Preferred Stock Proceeds from issuance of convertible preferred stock Proceeds from Issuance of Long-term Debt Proceeds from borrowing under bank and other debt Drawdown on facility Repayments of Long-term Debt Repayment of bank loan and other debt Proceeds from Issuance Initial Public Offering Proceeds from issuance of common stock under IPO Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Payments for Repurchase of Common Stock Repurchase of stock Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by financing activities Net Cash Provided by (Used in) Continuing Operations Net (decrease) increase in cash and cash equivalents Interest Paid Interest paid N/A. Organization and Description of Business Nature of Operations [Text Block] Organization and Description of Business Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies Fair Value Measurements Fair Value Disclosures [Text Block] Fair Value Measurements Lease Abandonment Charge Restructuring and Related Activities Disclosure [Text Block] Lease Abandonment Charge Business Acquisitions Business Combination Disclosure [Text Block] Business Acquisitions Property and Equipment, Net Property, Plant and Equipment Disclosure [Text Block] Property and Equipment, Net Intangible Assets, Net Intangible Assets Disclosure [Text Block] Intangible Assets, Net No definitions available. Goodwill Goodwill Disclosure [Text Block] Goodwill No definition available. Accrued Expenses and Other Current Liabilities Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] Accrued Expenses and Other Current Liabilities Long Term Bank and Other Debt Long-term Debt [Text Block] Long Term Bank and Other Debt Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Leases and Contractual Obligations Convertible Preferred Stock (the "Preferred Stock") Disclosure of stock classified as temporary equity. Temporary Equity Disclosure [Text Block] Convertible Preferred Stock (the "Preferred Stock") Common Stock and Stockholders'Equity (Deficit) Shareholders' Equity and Share-based Payments [Text Block] Common Stock and Stockholders' Equity Income Taxes Income Tax Disclosure [Text Block] Income Taxes Net Loss per Share Earnings Per Share [Text Block] Net Loss per Share 401(k) Plan Compensation and Employee Benefit Plans [Text Block] 401(k) Plan No Definition available. Legal Matters Legal Matters and Contingencies [Text Block] Legal Matters Subsequent Event Subsequent Events [Text Block] Subsequent Events Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). Also, disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. Basis Of Accounting And Consolidation Policy Text Block Basis of Presentation and Principles of Consolidation Business Combinations Policy [Policy Text Block] Business Combinations Use of Estimates, Policy [Policy Text Block] Use of Estimates Segment Reporting, Policy [Policy Text Block] Segment Information Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Cost of Sales, Policy [Policy Text Block] Cost of Revenue Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Marketable Securities, Available-for-sale Securities, Policy [Policy Text Block] Short-Term Investments Trade and Other Accounts Receivable, Policy [Policy Text Block] Accounts Receivable and Allowance for Doubtful Accounts