Document and Entity Information [Abstract] Document and entity information. Statement [Table] Statement [Line Items] Document Type Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Condensed Consolidated Balance Sheets [Abstract] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents-End of period Cash and cash equivalents-Beginning of period Cash and cash equivalents Accounts Receivable, Net, Current Accounts receivable, net of allowances of $109 and $144 as of June 30, 2012 and December 31, 2011, respectively Inventory, Net Total inventory Inventory Prepaid Expense and Other Assets, Current Prepaid expenses and other Assets, Current Total current assets Property, Plant and Equipment, Net Property and equipment, 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 Accrued Liabilities, Current Accrued liabilities Deferred Revenue, Current Deferred revenues Loans Payable, Current Current portion of term loans Warrants and Rights Outstanding Convertible preferred stock warrant liability Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Long-term liabilities: Deferred Revenue, Noncurrent Deferred revenues Product Warranty Accrual, Noncurrent Long-term portion Warranty obligations Other Liabilities, Noncurrent Other liabilities Loans Payable, Noncurrent Term loans Convertible Notes Payable, Noncurrent Convertible notes Liabilities, Noncurrent Total long-term liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Preferred Stock, Value, Issued Convertible preferred stock, carrying value Convertible preferred stock, $0.00001 par value, no shares authorized, issued or outstanding at June 30, 2012; 23,559 shares authorized, 22,221 shares issued and outstanding at December 31, 2011 Common Stock, Value, Issued Common stock, $0.00001 par value, 100,000 shares authorized 40,753 issued and outstanding at June 30, 2012; 41,410 shares authorized, 1,698 shares issued and outstanding at December 31, 2011 Additional Paid in Capital Additional paid-in capital Retained Earnings (Accumulated Deficit) Accumulated deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Stockholders' Equity Attributable to Parent Ending Balance Beginning Balance Total stockholders' equity Liabilities and Equity Total liabilities and stockholders' equity Class of Stock [Axis] Class of Stock [Domain] Convertible Preferred Stock [Member] Convertible preferred stock [Member] Convertible Preferred Stock [Member] Allowance for Doubtful Accounts Receivable Allowances, accounts receivable Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Convertible preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common stock, shares outstanding Common Stock, Shares, Outstanding Condensed Consolidated Statements of Operations [Abstract] Revenue, Net Net revenues Cost of Revenue Cost of revenues Gross Profit Gross profit 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 Income (Loss) from Continuing Operations Attributable to Parent Loss from operations Other Nonoperating Income (Expense) [Abstract] Other expense, net: Investment Income, Interest Interest income Interest Expense Interest expense Other Nonoperating Income (Expense) Other income (expense) Nonoperating Income (Expense) Total other expense, net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before income taxes Income Tax Expense (Benefit) Provision for income taxes Net Income (Loss) Attributable to Parent Net loss attributable to common stockholders Net loss attributable to common stockholders Income (Loss) from Continuing Operations, Per Basic and Diluted Share Net loss per share attributable to common stockholders, basic and diluted Weighted Average Number of Shares Outstanding, Basic and Diluted Shares used in computing net loss per share attributable to common stockholders, basic and diluted Condensed Consolidated Statements of Comprehensive Loss [Abstract] Other Comprehensive Income (Loss), Net of Tax [Abstract] Other comprehensive income (loss): Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Foreign currency translation adjustment Foreign currency translation adjustments Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss attributable to common stockholders Condensed Consolidated Statements of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net loss 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 operating activities: Depreciation, Depletion and Amortization Depreciation and amortization No-cash interest expense Amortization of Financing Costs and Discounts Share-based Compensation Stock based Compensation expenses Stock-based compensation Unrealized Gain (Loss) on Derivatives Change in fair value of convertible preferred stock warrants Increase (Decrease) in Operating Assets [Abstract] Changes in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable, accrued and other liabilities Increase (Decrease) in Deferred Revenue Deferred revenues Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: 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 Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Proceeds from Issuance of Long-term Debt Proceeds from term loans and debt Term loan and debt issuance costs Payments of Debt Issuance Costs Repayments of Long-term Debt Repayments of term loans Repayments of Long-term Capital Lease Obligations Principal payments under capital leases Proceeds from Stock Options Exercised Proceeds from the exercise of stock options Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Effect of Exchange Rate on Cash and Cash Equivalents Effect of exchange rate changes on cash Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Supplemental Cash Flow Information [Abstract] Supplemental disclosures of cash flow information: Interest Paid Cash paid for interest Noncash Investing and Financing Items [Abstract] Noncash financing and investing activities: Capital Lease Obligations Incurred Assets acquired under capital lease Capital Expenditures Incurred but Not yet Paid Purchases of property and equipment included in accounts payable Deferred Offering Costs Not Yet Paid Offering costs not yet paid Deferred Offering Costs Not Yet Paid. Organization and Description of Business [Abstract] Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] ORGANIZATION AND DESCRIPTION OF BUSINESS Summary of Significant Accounting Policies [Abstract] Significant Accounting Policies [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Inventory [Abstract] Inventory Disclosure [Text Block] INVENTORY Warranty Obligations [Abstract] Product Warranty Disclosure [Text Block] WARRANTY OBLIGATIONS Long-Term Debt [Abstract] Long-term Debt [Text Block] LONG-TERM DEBT Convertible Facility [Abstract] Debt Disclosure [Text Block] CONVERTIBLE FACILITY Commitments and Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES Stockholders' Equity [Abstract] Stockholders' Equity Note Disclosure [Text Block] STOCKHOLDERS' EQUITY Stock-Based Compensation [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] STOCK-BASED COMPENSATION Income Taxes [Abstract] Income Tax Disclosure [Text Block] INCOME TAXES Net Loss Per Share Attributable To Common Stockholders [Abstract] Earnings Per Share [Text Block] NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS Geographic Information [Abstract] Segment Reporting Disclosure [Text Block] GEOGRAPHIC INFORMATION Related Party Transactions [Abstract] Related Party Transactions Disclosure [Text Block] RELATED PARTY TRANSACTIONS Condensed Consolidated Statement of Stockholders' Equity [Abstract] Common Stock [Member] Common Stock [Member] Common Stock Exercise of stock options, Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Number of Shares Outstanding, Exercised Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Shares, Outstanding Ending Balance, Shares Beginning Balance, Shares Additional Paid-in Capital [Member] Additional Paid-In-Capital Retained Earnings [Member] Accumulated Deficit Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income Equity Components [Axis] Equity Component [Domain] Reclassification of Preferred Stock Warrant Liability Reclassification of convertable preferred stock warrant liability to additional paid-in capital upon IPO Reclassification of preferred stock warrant liability. Organization and Description of Business (Textual) [Abstract] Organization and description of business. Organization and Description of Business (Textual) [Abstract] Common Stock Exercise Allotment by Underwriters Common stock exercise, allotment by underwriters Common stock exercise allotment by underwriters. Basis of Accounting, Policy [Policy Text Block] Basis of Presentation Schedule of inventory Schedule of Inventory, Current [Table Text Block] Inventory, Net [Abstract] Schedule of inventory Inventory, Raw Materials, Gross Raw materials Inventory, Finished Goods, Gross Finished goods Schedule of Product Warranty Liability [Table Text Block] Changes in the Company's product warranty liability Product Warranty Accrual Balance, at end of period Balance, at beginning of period Schedule of Long-term Debt Instruments [Table Text Block] Schedule of long-term debt Long-term Debt Total debt Long-term Debt, Current Maturities Less current portion Long-term Debt, Excluding Current Maturities Long-term portion Write-downs of inventory and provision for loss Inventory Write-down Inventory (Textual) [Abstract] Inventory. Inventory (Textual) [Abstract] Long Term Debt (Textual) [Abstract] Long term debt. Long-Term Debt (Textual) [Abstract] Convertible Facility (Textual) [Abstract] Convertible facility. Convertible Facility (Textual) [Abstract] Debt Discounts and Debt Issuance Cost Debt discounts and debt issuance cost. Debt discounts and debt issuance cost Convertible Preferred Stock Outstanding [Table Text Block] Convertible preferred stock outstanding Convertible preferred stock outstanding. Convertible Preferred Stock Outstanding [Abstract] Convertible preferred stock outstanding. Convertible preferred stock outstanding Convertible Preferred Stock Original Issuance Price Convertible preferred stock, original issuance price Convertible preferred stock original issuance price. Series A Preferred Stock [Member] Series A [Member] Series B Preferred Stock [Member] Series B [Member] Series C Preferred Stock [Member] Series C [Member] Series D Preferred Stock [Member] Series D [Member] Series E Preferred Stock [Member] Series E [Member] Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Balance at June 30, 2012 Balance at December 31, 2011 Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Changes in Fair value using recurring basis Stockholders Equity (Textual) [Abstract] Stockholders equity. Stockholders Equity (Textual) [Abstract] Stockholders' Equity, Reverse Stock Split Reverse Stock split Schedule of Stock by Class [Table] Class of Stock [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block] Changes in Fair value using recurring basis Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of Shares Options Outstanding, Ending Number of Shares Options Outstanding, Beginning Common stock, shares outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of Shares Outstanding, Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Number of Shares Outstanding, Cancelled Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted- Average Exercise Price per Share Options Outstanding, Ending Balance Weighted- Average Exercise Price per Share Options Outstanding, Beginning Balance Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted- Average Exercise Price per Share, Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted- Average Exercise Price per Share, Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Weighted- Average Exercise Price per Share, Cancelled Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Company's stock option activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Company's stock option activity Cost of Sales [Member] Cost of revenues [Member] Research and Development Expense [Member] Research and development [Member] Selling and Marketing Expense [Member] Sales and marketing [Member] General and Administrative Expense [Member] General and administrative [Member] Allocated Share-based Compensation Expense Total Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] The components of total stock-based compensation expense included in the condensed consolidated statement of operations Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Employee stock purchase plan. Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Annual risk-free rate of return Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] The fair value of each option granted during the periods Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] The fair value of each option granted during the periods presented was estimated on the date of grant Two Thousand Six Plan [Member] 2006 Plan [Member] Two thousand six plan. Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized Total unrecognized compensation cost Stock Compensation Plan [Member] Stock based Compensation expenses [Member] Stock Based Compensation (Textual) [Abstract] Stock based compensation. Stock Based Compensation (Textual) [Abstract] 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, 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 [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Domain] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Income Taxes (Textual) [Abstract] Income taxes. Income Taxes (Textual) [Abstract] Stock Options [Member] Stock options to purchase common stock [Member] Warrant [Member] Warrants to purchase common stock [Member] Antidilutive Securities [Abstract] The potential common shares outstanding that were excluded from the computation of diluted net loss per share attributable to common stockholders Antidilutive securities. Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Total Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] The potential common shares outstanding that were excluded from the computation of diluted net loss per share attributable to common stockholders Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Long Lived Assets [Abstract] Long-lived assets by geographic region Long lived assets. Other Country [Member] Other country. Other [Member] Long-Lived Assets Total UNITED STATES United States [Member] CHINA China [Member] Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] Long-lived assets by geographic region Schedule of Revenues from External Customers and Long-Lived Assets [Table] Geographical [Axis] Segment, Geographical [Domain] Revenues from External Customers and Long-Lived Assets [Line Items] Related Party Transactions (Textual) [Abstract] Related party transactions. Related Party Transactions (Textual) [Abstract] Revenue From Related Parties Revenues from transactions Amendment Flag Stock Issued During Period, Shares, New Issues Common stock, shares issued Common stock issued upon initial public offering ("IPO"), net of offering costs, Shares Stock Issued During Period, Value, New Issues Common stock issued upon initial public offering ("IPO"), net of offering costs Stock Issued During Period Shares Conversion of Convertible Securities and Paid in Kind Interest Conversion of notes into common stock Conversion of convertible preferred stock upon IPO, Shares Stock issued during period shares conversion of convertible securities and paid in kind interest. Proceeds from Issuance Initial Public Offering Proceeds from the sale of common stock Proceeds from issuance of common stock in IPO, net of underwriting discounts and commissions Payments of Stock Issuance Costs Payment of offering costs Proceeds from Issuance of Common Stock Gross Common stock issued, value Proceeds from issuance of common stock gross. Stock Issued During Period Shares to Related Parties Common stock purchased by related parties Stock issued during period shares to related parties. Underwriters Discounts and Commissions Underwriters discounts and commissions Underwriters discounts and commissions. Other Estimated Offering Costs Other estimated offering costs Other estimated offering costs. Stock Issued During Period, Shares, Conversion of Convertible Securities Convertible notes converted into common stock shares Conversion of preferred stock into common stock Class of Warrant Number of Preferred Stock Securities Called by Warrants Convertible preferred stock, warrants to purchase Class of warrant number of preferred stock securities called by warrants. Class of Warrant or Right, Number of Securities Called by Warrants or Rights Warrant to purchase shares Common stock, warrants to purchase Debt Instrument, Convertible, Conversion Price Common stock conversion price per share Conversion price of convertible notes Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Changes in the Company's product warranty liability Product Warranty Accrual, Warranties Issued Warranty expense Product Warranty Accrual, Current Less current portion Long-term Debt, Current and Noncurrent [Abstract] Schedule of long-term debt Secured Debt [Member] Term loan [Member] Term loans, net of unamortized discount of $334 and $435, respectively [Member] Equipment Financing Facility [Member] Equipment financing facility [Member] Equipment financing facility, net of unamortized discount of $125 and $156, respectively [Member] Equipment financing facility. Debt Instrument, Unamortized Discount Net of unamortized discount Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Debt Instrument [Line Items] Current Federal State and Local Tax Expense Benefit Provision for U.S. federal or state income taxes Current federal state and local tax expense benefit. Current Foreign Tax Expense (Benefit) Provision for income tax Warrant Convertible Common Stock [Member] Warrants to purchase convertible preferred stock [Member] Warrant convertible common stock. Convertible Debt Securities [Member] Convertible notes [Member] Deferred Revenue and Credits from Related Parties Current deferred revenue balance Deferred revenue and credits from related parties. Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] The components of total stock-based compensation expense included in the condensed consolidated statement of operations Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted-average fair value Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Issue of common stock Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Weighted-average period Plan Name [Axis] Plan Name [Domain] Line of Credit Facility borrowings Class of Warrant Number of Common Stock Securities Called by Warrants Common stock warrants to purchase Class of warrant number of common stock securities called by warrants. Class of Warrant Contractual Term Period Common stock exercisable contractual term Class of warrant contractual term period. Interest Expense for Extinguishment of Debt Convertible facility, interest Interest expense for extinguishment of debt. Description of Convertible Notes Conversion Price Description of convertible notes conversion price Description of convertible notes conversion price. Convertible Preferred Stock, Shares Issued upon Conversion Conversion of preferred stock, number of shares of common stock issued upon conversion Fair value adjustments recognized in other (income) expense, net Fair Value, Assets Measured on Recurring Basis, Gain (Loss) Included in Other Income Convertible Preferred Stock Warrant Liability [Member] Convertible preferred stock warrant liability [Member] Convertible preferred stock warrant liability. Asset Class [Axis] Fair Value by Asset Class [Domain] Class of Warrant or Right, Exercise Price of Warrants or Rights Warrant to purchase price per share Class of Warrant or Right Contractual Period for Exercise Warrants exercisable contractual term Class of warrant or right contractual period for exercise. Increase in Common Stock Shares Reserved for Future Issuance Description Increase in number of shares of common stock reserved for issuance under the stock incentive plan description Share based compensation arrangement by share based payment award plan modification incremental number of share limit. Increase in Common Stock Shares Reserved for Future Issuance Closing Date Common stock reserved for ending, date Increase in common stock shares reserved for future issuance closing date. Increase in Common Stock Shares Reserved for Future Issuance Percentage Increase in number of shares of common stock reserved for issuance under the stock incentive plan Share based compensation arrangement by share based payment award plan modification incremental number of share limit. Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Maximum number of shares that be issued pursuant to the exercise of incentive stock options First Year Concurrent Offering Period Maximum Concurrent offering periods, description First year concurrent offering period maximum. First Year Concurrent Offering Effective Date Effective date First year concurrent offering effective date. Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate Payroll deductions Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Fair market value Share Based Compensation Arrangement by Share Based Payment Award Look Back Feature Period Look-back feature in ESPP Share based compensation arrangement by share based payment award look back feature period. Two Thousand and Eleven Plan [Member] 2011 Plan [Member] Two thousand and eleven plan. Increase in Common Stock Shares Reserved for Future Issuance Beginning Date Common stock reserved for beginning, date Increase in common stock shares reserved for future issuance beginning date. Stock Issued During Period Share Conversion of Convertible Preferred Stock into Common Stock Conversion of convertible preferred stock into common stock upon IPO, Shares Stock issued during period share conversion of convertible preferred stock into common stock. Conversion of Preferred Stock Warrants to Common Stock Warrants Conversion of convertible preferred stock warrants to common stock warrants upon IPO Conversion of preferred stock warrants to common stock warrants. Stock Issued During Period Share Conversion of Convertible Notes and Paid in Kind Interest into Common Stock Conversion of convertible notes and paid-in-kind interest into common stock upon IPO, Shares Stock issued during period share conversion of convertible notes and paid in kind interest into common stock. Stock Issued During Period Value Conversion of Convertible Notes and Paid in Kind Interest into Common Stock Conversion of convertible notes and paid-in-kind interest into common stock upon IPO Stock issued during period value conversion of convertible notes and paid in kind interest into common stock. Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of convertible notes into common stock upon IPO Share Price Common stock issued price per share Stock issued during period offering price Adjustments to Additional Paid in Capital Reclassification of Preferred Stock Warrant Liability Convertible preferred stock, warrant liability Adjustments to additional paid in capital reclassification of preferred stock warrant liability. Convertible Notes Payable Convertible notes, outstanding balance of principal and accrued paid in kind interest Standard Product Warranty Accrual, Preexisting, Increase (Decrease) Settlements Proceeds from Convertible Debt Convertible facility convertible notes issued General Duration of Employee Stock Purchase Plan General duration (in months) of employee stock purchase plan General duration of employee stock purchase plan. Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Equity awards granted contractual term Maximum Duration of Employee Stock Purchase Plan Maximum duration of employee stock purchase plan Maximum duration of employee stock purchase plan. Offering Period Duration and Commencement Dates Except for Initial Offering Period Except for the first offering period Concurrent offering period starting dates. IRS Limitation for Employees Right to Acquire Class Common Stock Under ESPP Purchase of common stock IRS Limitation for an employee's right to acquire Class common stock under ESPP. Provision for Doubtful Accounts Provision for doubtful accounts Gains (Losses) on Sales of Other Assets Net loss on disposal of assets Increase (Decrease) in Other Accrued Liabilities Other financing costs not yet paid DERIVATIVE INSTRUMENTS Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative Instruments [Abstract] Fair Value Disclosures [Abstract] Fair Value, Liabilities Measured on Recurring Basis [Table Text Block] Schedule of financial instruments that are measured at fair value on a recurring basis Summary Of Significant Accounting Policies (Textual) [Abstract] Summary of Significant Accounting Policies (Textual) [Abstract] Summary of significant accounting policies. Warranty Obligations (Textual) [Abstract] Warranty Obligations (Textual) [Abstract] Warranty obligations. October Fifteen Two Thousand Twelve [Member] October 15, 2012 [Member] October fifteen two thousand twelve. January Fifteen Two Thousand Thirteen [Member] January 15, 2013 [Member] January fifteen two thousand thirteen. Derivative Instruments (Textual) [Abstract] Derivative Instruments (Textual) [Abstract] Derivative instruments. Liabilities, Fair Value Disclosure Total Fair Value, Measurements, Recurring [Member] Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member] Preferred stock warrant liability (Level 3) [Member] Fair Value, Inputs, Level 2 [Member] Foreign currency forward contracts (Level 2) [Member] Derivative [Table] Derivative, by Nature [Axis] Derivative, Name [Domain] Derivative [Line Items] Derivative Instruments Not Designated as Hedging Instruments [Abstract] Summary of open foreign currency forward contracts Fair Value Measurements, Recurring and Nonrecurring [Table] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Liabilities, Fair Value Disclosure [Abstract] Company's financial instruments that measured at fair value on a recurring basis Revolving Credit Facility [Member] Revolving Credit Facility [Member] Line of Credit Facility, Maximum Borrowing Capacity Convertible facility, preferred stockholders in borrowings Line of Credit Facility outstanding Line of Credit Facility, Amount Outstanding Reclassification Of Convertible Preferred Stock Warrant Liability To Additional Paid In Capital Reclassification of convertible preferred stock warrant liability to additional paid in capital Reclassification of convertible preferred stock warrant liability to additional paid in capital. Restricted Stock Units (RSUs) [Member] Restricted stock units [Member] Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options Exercise of stock options Proceeds from (Repayments of) Notes Payable Proceeds from issuance of convertible notes Fair Value, Measurement Inputs, Disclosure [Text Block] FAIR VALUE MEASUREMENTS Correction to Prior Periods Policy Text Block Correction to Prior Periods Correction To Prior Periods. Schedule of Derivative Instruments [Table Text Block] Summary of open foreign currency forward contracts Automatic Termination of Convertible Debt Termination of convertible facility upon consummation of IPO Conversion of the outstanding notes and the automatic termination of the Convertible Facility Automatic termination of convertible debt. Effect of Prior Period Correction to Reduce Net Revenue Effect of prior period correction to reduce net revenue. Effect of prior period correction to reduce net revenue Effect of Prior Period Correction to Increase Cost of Revenue Effect of prior period correction to increase Cost of revenue Effect of prior period correction to increase Cost of revenue. Effect of Prior Period Correction to Reduce Gross Profit Effect of prior period correction to reduce gross profit Effect of prior period correction to reduce gross profit. Effect of Prior Period Correction to Reduce Loss from Operation Effect of prior period correction to reduce loss from operation Effect of prior period correction to reduce loss from operation. Earnings Per Share Basic After Correction of Prior Period Items Basic and diluted net loss per share after correction of prior period items Earnings per share basic after correction of prior period items. Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Contract Value Contract value Foreign currency derivative instruments not designated as Hedging instruments contract value. Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Market Value Market value Foreign currency derivative instruments not designated as hedging instruments market value. Notional Amount of Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Foreign Quantity Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value Asset (Liability) Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Loss related to the fair value adjustment of outstanding derivative instruments Line of Credit Facility available for borrowing Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases Effect of Prior Period Correction to Reduce Net Loss Attributable To Common Stockholder Effect of prior period correction to reduce net loss attributable to common stockholder. Effect of prior period correction to reduce net loss attributable to common stockholder Mandatorily Redeemable Preferred Stock, Fair Value Disclosure Preferred stock warrant liability Foreign Currency Contracts, Liability, Fair Value Disclosure Foreign currency forward contracts Stock Issued During Period Value Conversion of Convertible Preferred Stock in to Common Stock Conversion of convertible preferred stock into common stock upon IPO Stock issued during period value conversion of convertible preferred stock in to common stock. Proceeds from Issuance of Private Placement Proceeds from private placement of common stock Change In Estimated Warranty Expense Decrease Reduction in estimated replacement costs Change in estimated warranty expense decrease. Change In Estimated Warranty Expense Increase Increase in estimated replacement costs Change in estimated warranty expense increase. Stock Issued During Period, Shares, Other Common stock issued Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Equity awards granted period vest over Preferred Stock [Member] Automatic Termination of Convertible Facility Conversion of the outstanding notes and the automatic termination of the Convertible Facility Automatic termination of convertible facility. Conversion of Convertible Preferred Stock into Common Stock Conversion of convertible preferred stock into common stock. Conversion of convertible preferred stock into common stock Increase In Annual Common Stock Shares Reserve For Future Issuance Common stock Increase in annual common stock shares reserve for future issuance. Write off of Deferred Debt Issuance Cost Debt issuance costs and discounts related to conversion Share Based Compensation Arrangement By Share Based Payment Award Expiration In Years Expiration term of ESPP Share based compensation arrangement by share based payment award expiration in years.