Litigation reserve The increase (decrease) during the reporting period in the amount of litigation reserve expense incurred but not yet paid. Increase (Decrease) In Litigation Reserve Adjustment of fair value of warrant liability Fair Value of Warrent Liability Represents the adjustment of fair value of warrant liability. Reclassification of Warrant Liability to Convertible Preferred Stock Upon Exercise of Warrants Reclassification of warrant liability to convertible preferred stock upon exercise of warrants Represents the reclassification of warrant liability to convertible preferred stock upon holders exercising their warrants. Reclassification of Warrant Liability to Additional Paid in Capital Upon Closing of Initial Public Offering Reclassification of warrant liability to additional paid-in capital upon closing of initial public offering Represents the reclassification of warrant liability to additional paid-in capital upon closing of the initial public offering. Warrants for Convertible Preferred Stock and Common Stock Warrants And Rights Note Disclosure Text Block Disclosure of warrants or rights issued. "Equity warrants and rights outstanding" represents derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new financing to entice investors by a higher return potential. Ratable products and services Ratable Product and Services Revenue, Net Aggregate revenue from the sale of products and services where VSOE for the support services being provided cannot be segregated from the value of the entire sales arrangement, or where the entity has provided technical support or unspecified software upgrades outside of the contractual terms. In these cases, revenues are deferred and recognized ratably over the economic life of the product or the contractual period. Acquisition of Identity Networks Business Combination Disclosure [Text Block] Ratable products and services Cost of Ratable Product and Services Total costs related to the sale of products and services where VSOE for the support services being provided cannot be segregated from the value of the entire sales arrangement, or where the entity has provided technical support or unspecified software upgrades outside of the contractual terms. In these cases, costs are deferred and recognized ratably over the economic life of the product or the contractual period. Document and Entity Information CONDENSED CONSOLIDATED BALANCE SHEETS Statement [Table] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Statement [Line Items] Statement Assets [Abstract] ASSETS Assets, Current [Abstract] CURRENT ASSETS: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents CASH AND CASH EQUIVALENTS - Beginning of period CASH AND CASH EQUIVALENTS - End of period Short-term Investments Short-term investments Accounts Receivable, Net, Current Accounts receivable, net Inventory, Net Inventory Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Deferred Costs, Current Deferred inventory costs, current portion Property, Plant and Equipment, Net Property and equipment, net Assets TOTAL ASSETS Other Assets, Noncurrent Other assets Deferred Costs, Noncurrent Deferred inventory costs, net of current portion Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] CURRENT LIABILITIES: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued liabilities Long-term Debt, Current Maturities Long-term debt, current portion Deferred Revenue, Current Deferred revenue, current portion Liabilities, Current Total current liabilities Estimated Litigation Liability, Current Litigation reserve Deferred Revenue, Noncurrent Deferred revenue, net of current portion Liabilities Total liabilities Commitments and Contingencies. Commitments and contingencies (Note 9) Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] STOCKHOLDERS' EQUITY: Preferred Stock, Value, Issued Preferred stock, $0.0005 par value - 5,000,000 shares authorized; no shares issued and outstanding as of September 30, 2011 and December 31, 2010 Common Stock, Value, Issued Common stock, $0.0005 par value - 150,000,000 shares authorized; 17,554,502 and 16,337,804 shares issued and outstanding as of September 30, 2011 and December 31, 2010 Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive loss Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total stockholders' equity Additional Paid in Capital, Common Stock Additional paid-in capital Liabilities and Equity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY 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 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 Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss: Net (loss) income Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash (used in) provided by operating activities: Share-based Compensation Stock-based compensation Increase (Decrease) in Operating Capital [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable, net Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities Accrued liabilities Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Deferred Charges Deferred inventory costs Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Amortization of Financing Costs Amortization of debt issuance costs Provision for Doubtful Accounts Provision for (recovery of) bad debt Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Payments to Acquire Available-for-sale Securities Purchase of short-term investments Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from maturities of short-term investments Proceeds from Issuance Initial Public Offering Proceeds from initial public offering, net Proceeds from Stock Options Exercised Proceeds from exercise of stock options Proceeds from Issuance of Long-term Debt Proceeds from long-term debt Repayments of Long-term Debt Repayment of long-term debt Proceeds from Warrant Exercises Proceeds from exercise of convertible preferred stock warrants Proceeds from Stock Plans Proceeds from employee stock purchase plan Proceeds from Issuance of Common Stock Proceeds from issuance of common stock Supplemental Cash Flow Information [Abstract] SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION: Interest Paid Cash paid for interest Income Taxes Paid Cash paid for income taxes Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] NONCASH INVESTING AND FINANCING ACTIVITIES: Conversion of Stock, Amount Converted Conversion of convertible preferred stock to common stock CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Business and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Business and Summary of Significant Accounting Policies Inventory Inventory Disclosure [Text Block] Inventory Net loss per share of common stock: Net Loss Per Share of Common Stock Earnings Per Share [Text Block] Net Loss Per Share of Common Stock Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Fair Value of Financial Instruments Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Warrants for Convertible Preferred Stock and Common Stock Equity Incentive Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Equity Incentive Plans Information about Geographic Areas Segment Reporting Disclosure [Text Block] Information about Geographic Areas Income Taxes Income Tax Disclosure [Text Block] Income Taxes Related-Party Transactions Related Party Transactions Disclosure [Text Block] Related-Party Transactions Comprehensive Income (Loss) Note [Text Block] Comprehensive Loss Subsequent Event Subsequent Events [Text Block] Subsequent Event Revenues [Abstract] REVENUES: Revenues Total revenues Sales Revenue, Goods, Net Products Sales Revenue, Services, Net Support and services Cost of Revenue [Abstract] COSTS OF REVENUES: Cost of Services Support and services Cost of Revenue Total costs of revenues Costs of revenues Cost of Goods Sold Products Gross Profit Gross margin Operating Expenses [Abstract] OPERATING EXPENSES: Research and Development Expense Research and development Selling and Marketing Expense Sales and marketing General and Administrative Expense General and administrative Operating Expenses Total operating expenses Litigation reserve Litigation Settlement, Expense Operating Income (Loss) Loss from operations Other Nonoperating Income (Expense) Other income (expense), net Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before provision for income taxes Income Tax Expense (Benefit) Provision for income taxes Earnings Per Share, Basic Basic (in dollars per share) Earnings Per Share, Diluted Diluted (in dollars per share) Weighted Average Number of Shares Outstanding, Diluted [Abstract] Shares used in computing net loss per share of common stock: Weighted Average Number of Shares Outstanding, Basic Basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Diluted (in shares) Interest Income (Expense), Nonoperating, Net Interest expense, net Share-based Compensation [Abstract] Includes stock-based compensation expense as follows: Allocated Share-based Compensation Expense Stock-based compensation expense 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 Marketing Expense [Member] Sales and marketing General and Administrative Expense [Member] General and administrative Cost of Sales [Member] Costs of revenues Research and Development Expense [Member] Research and development CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS 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 Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Goodwill Goodwill Cost and Equity Method Investments Disclosure [Text Block] Cost Method Investments Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Intangible Assets Payments to Acquire Businesses, Net of Cash Acquired Net cash paid in purchase of business Stockholders' Equity Attributable to Parent [Abstract] STOCKHOLDERS' EQUITY: Stockholders' Equity Attributable to Parent Total stockholders' equity Net Income (Loss) Available to Common Stockholders, Basic Net loss Net loss: Acquisition of Identity Networks Goodwill and Intangible Assets Cost Method Investments CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash (used in) provided by operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash (used in) provided by financing activities Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations NET DECREASE IN CASH AND CASH EQUIVALENTS Net Cash Provided by (Used in) Continuing Operations Investment in non-marketable equity securities Payments to Acquire Other Investments Comprehensive Loss Recently Issued Accounting Pronouncements Recently Issued Accounting Pronouncements Description of New Accounting Pronouncements Not yet Adopted [Text Block] Business Acquisition, Purchase Price Allocation, Assets Acquired Assets acquired in business combination for future consideration Recently Issued Accounting Pronouncements.