Accelerated Unvested Stock Options Accelerated Unvested Stock Options Accelerate aggregate additional shares Accounts Payable Current Accounts payable Accounts Receivable From Major Customers Accounts Receivable From Major Customers Accounts Receivable with logistic provider and one direct ODM customer Accounts Receivable Net Current Accounts receivable, net Accrued Development Cost Liabilities Accrued Development Cost Liabilities Accrued product development costs Accrued Income Taxes Current Income taxes payable Accrued Liabilities Current Accrued liabilities Total accrued liabilities The entire disclosure for accrued liabilities at the end of the reporting period. Accrued Liabilities Disclosure [Text Block] Accrued Liabilities Accrued Liabilities [Line Items] Accrued Liabilities [Line Items] Accrued Liabilities [Line Items] Accrued Liabilities [Table] Accrued Liabilities [Table] Accrued Liabilities [Table] Accrued Rebates Accrued Rebates Accrued rebates Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: accumulated depreciation and amortization Additional Paid In Capital Additional paid-in capital Additional undistributed earnings allocated to ordinary shares holders as a result of potentially dilutive securities using the treasury stock method. Additional Undistributed Earnings Allocated To Common Stockholders Undistributed earnings reallocated to ordinary shareholders Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Affiliated Entity [Member] Affiliated Entity [Member] Aggregate fair market value reclassified from the liability to stockholders' equity. Aggregate Fair Market Value Reclassified From Liability To Stockholders Equity Fair market value The intrinsic value of restricted stock units under equity compensation plan (excluding stock options), as calculated by applying closing stock price of the entity to total unvested awards at balance sheet date. Aggregate Intrinsic Value Of Unvested Restricted Stock Units Aggregate intrinsic value of unvested restricted stock units Allocated Share Based Compensation Expense Stock-based compensation Amendment Flag Amendment Flag Amortization Of Intangible Assets Aggregate amount of amortization expense Amortization of other intangible assets Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Antidilutive shares excluded from computation of Earnings Per Share Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Asia Pacific [Member] Asia Pacific [Member] Asia Pacific [Member] Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] Basis Of Accounting Policy Policy [Text Block] Basis of presentation Capital Expenditures Incurred But Not Yet Paid Increase in accrued liabilities related to non-monetary assets purchases Capital Stock. Capital Stock Disclosure [Text Block] Capital Stock Cash Cash Cash And Cash Equivalents At Carrying Value Cash and cash equivalents at end of period Cash and cash equivalents at beginning of period Cash And Cash Equivalents Period Increase Decrease Net increase in cash and cash equivalents Disclosure of accounting policy for cash equivalents and short-term investments. Cash Cash Equivalents And Short Term Investments Policy [Text Block] Cash, Cash Equivalents and Short-Term Investments Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Supplemental disclosure of noncash financing activities: Change In Deferred Tax Assets Change In Deferred Tax Assets Deferred tax assets Change in fair value of convertible preferred stock warrant liability. Change In Fair Value Of Convertible Preferred Stock Warrant Liability Change in value of warrants Class Of Stock [Domain] Class of Stock [Domain] Class Of Stock [Line Items] Class of Stock [Line Items] Class Of Warrant Or Right Exercise Price Of Warrants Or Rights Company issued warrants to purchase Series B redeemable convertible preference shares at an exercise price Class Of Warrant Or Right Outstanding Total preference share warrants outstanding Closing Sale Price Of Common Stock On Nasdaq Closing Sale Price Of Common Stock On Nasdaq Closing price of Stock Total commitment payment of license. Commitment Payment Of License Total commitment payment of license Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Commitments And Contingencies [Table] Common Stock Par Or Stated Value Per Share Ordinary shares, par value Common Stock Shares Authorized Ordinary shares authorized Ordinary shares, shares authorized Common Stock Shares Issued Ordinary shares, shares issued Over-allotment shares sold Common Stock Shares Outstanding Ordinary shares, shares outstanding Common Stock Value Ordinary shares, $0.00045 par value per share, 200,000,000 and 44,444,444 shares authorized at October 31, 2012 and at January 31, 2012, respectively; 26,093,016 shares issued and outstanding at October 31, 2012; 7,600,869 shares issued and outstanding at January 31, 2012 Compensation And Employee Benefit Plans [Text Block] Employee Benefits and Stock-based Compensation Comprehensive Income Policy Policy [Text Block] Comprehensive Income (Loss) Computer equipment and software. Computer Equipment And Software Computer equipment and software Disclosure of credit risk, economic risk and market risk of the entity's business. Concentration Of Risk Policy [Text Block] Concentration of Risk Consideration received from cost method investment Consideration Received From Cost Method Investment Proceeds from sale of shares in a private company Consolidation Policy [Text Block] Basis of Consolidation Construction In Progress Gross Construction in progress Conversion of preferred stock warrants to common stock warrants. Conversion Of Preferred Stock Warrants To Common Stock Warrants Conversion of convertible preference share warrants to ordinary share warrants Conversion Of Stock Amount Converted 1 Conversion of convertible preference shares to ordinary shares Convertible Preferred Stock Shares Reserved For Future Issuance Shares reserved for redeemable convertible preference shares Convertible Preferred Stock Terms Of Conversion Redeemable convertible preference shares conversion Cost Method Investments Policy Cost Method Investment Cost Of Revenue Cost of revenue Cost Of Sales [Member] Cost of revenue [Member] Cost Of Sales Policy [Text Block] Cost of Revenue Current Fiscal Year End Date Current Fiscal Year End Date Deferred Cost Associated With Deferred Revenue For Product Shipments Deferred Cost Of Revenue For Product Shipments Deferred cost of revenue on product shipments Deferred Income, Net Deferred Income Net Total deferred income Total deferred income The entire disclosure for deferred revenues and costs at the end of the reporting period, and description and amounts of significant changes that occurred during the reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Deferred cost is a sum of the carrying amounts as of the balance sheet date of deferred costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer. Deferred Revenue And Deferred Cost Disclosure [Text Block] Deferred Revenue and Deferred Cost Deferred Revenue And Deferred Cost [Line Items] Deferred Revenue And Deferred Cost [Line Items] Deferred Revenue and Deferred Cost [Line Items] Deferred Revenue And Deferred Cost Table [Text Block] Deferred Revenue And Deferred Cost Table [Text Block] Deferred Revenue and Deferred Cost Deferred Revenue Arrangement By Type [Table] Deferred Revenue Arrangement, by Type [Table] Deferred Revenue Current Deferred revenue, current Deferred Revenue From Licenses Deferred Revenue From Licenses Deferred revenue from licenses Deferred Revenue From Product Shipments Deferred Revenue From Product Shipments Deferred revenue on product shipments Deferred Revenue Noncurrent Deferred revenue, non-current Deferred Tax Assets Net Current Deferred tax assets, current Deferred Tax Assets Net Noncurrent Deferred tax assets, non-current Denominator [Abstract] Denominator [Abstract] Denominator: Depreciation Depreciation of property and equipment Depreciation And Amortization Depreciation And Amortization Expense Dilutive Securities [Abstract] Effect of potentially dilutive securities: Disclosure - Accrued Liabilities - Accrued Liabilities [Abstract] Disclosure Accrued Liabilities Accrued Liabilities [Abstract] Disclosure - Accrued Liabilities - Accrued Liabilities [Abstract] Disclosure Capital Stock Additional Information [Abstract] Disclosure Capital Stock Additional Information [Abstract] Disclosure Capital Stock Additional Information [Abstract] Disclosure - Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance [Abstract] Disclosure Capital Stock Schedule Of Ordinary Shares Reserved For Future Issuance [Abstract] Disclosure - Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure - Commitments and Contingencies - Future Annual Minimum Lease Payments [Abstract] Disclosure Commitments And Contingencies Future Annual Minimum Lease Payments [Abstract] Disclosure - Commitments and Contingencies - Future Annual Minimum Lease Payments [Abstract] Disclosure - Deferred Revenue and Deferred Cost - Additional Information [Abstract] Disclosure Deferred Revenue And Deferred Cost Additional Information [Abstract] Disclosure - Deferred Revenue and Deferred Cost - Additional Information [Abstract] Disclosure - Deferred Revenue and Deferred Cost - Deferred Revenue and Related Cost [Abstract] Disclosure Deferred Revenue And Deferred Cost Deferred Revenue And Related Cost [Abstract] Disclosure - Deferred Revenue and Deferred Cost - Deferred Revenue and Related Cost [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Additional Information [Abstract] Disclosure Employee Benefits And Stock Based Compensation Additional Information [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Additional Information [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Classification of Stock-Based Compensation [Abstract] Disclosure Employee Benefits And Stock Based Compensation Classification Of Stock Based Compensation [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Classification of Stock-Based Compensation [Abstract] Disclosure - Employee Benefits and Stock-based Compensation - Restricted Stock Units Activities [Abstract] Disclosure Employee Benefits And Stockbased Compensation Restricted Stock Units Activities [Abstract] Disclosure - Employee Benefits and Stock-based Compensation - Restricted Stock Units Activities [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Stock Option Activities [Abstract] Disclosure Employee Benefits And Stock Based Compensation Stock Option Activities [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Stock Option Activities [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Stock Options Outstanding and Exercisable [Abstract] Disclosure Employee Benefits And Stock Based Compensation Stock Options Outstanding And Exercisable [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Stock Options Outstanding and Exercisable [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value [Abstract] Disclosure Employee Benefits And Stock Based Compensation Weighted Average Assumptions Used To Estimate Fair Value [Abstract] Disclosure - Employee Benefits and Stock-Based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure Income Taxes Additional Information [Abstract] Disclosure - Income Taxes - Summary of Reported Income Tax [Abstract] Disclosure Income Taxes Summary Of Reported Income Tax [Abstract] Disclosure - Income Taxes - Summary of Reported Income Tax [Abstract] Disclosure Intangible Assets Additional Information [Abstract] Disclosure Intangible Assets Additional Information [Abstract] Disclosure Intangible Assets Additional Information [Abstract] Disclosure - Intangible Assets - Intangible Assets [Abstract] Disclosure Intangible Assets Intangible Assets [Abstract] Disclosure - Intangible Assets - Intangible Assets [Abstract] Disclosure - Inventories - Inventory [Abstract] Disclosure Inventories Inventory [Abstract] Disclosure - Inventories - Inventory [Abstract] Disclosure - Net Income Per Ordinary Share - Computation of Basic and Diluted Income Per Ordinary Share [Abstract] Disclosure Net Income Per Ordinary Share Computation Of Basic And Diluted Income Per Ordinary Share [Abstract] Disclosure - Net Income Per Ordinary Share - Computation of Basic and Diluted Income Per Ordinary Share [Abstract] Disclosure - Net Income Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Ordinary Per Share [Abstract] Disclosure Net Income Per Ordinary Share Weighted Average Potentially Dilutive Securities Excluded From Computation Of Diluted Net Income Ordinary Per Share [Abstract] Disclosure - Net Income Per Ordinary Share - Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Ordinary Per Share [Abstract] Disclosure Organization And Summary Of Significant Accounting Policies Additional Information [Abstract] Disclosure Organization And Summary Of Significant Accounting Policies Additional Information [Abstract] Disclosure Organization And Summary Of Significant Accounting Policies Additional Information [Abstract] Disclosure - Property and Equipment, Net - Property and Equipment [Abstract] Disclosure Property And Equipment Net Property And Equipment [Abstract] Disclosure - Property and Equipment, Net - Property and Equipment [Abstract] Disclosure Property Plant And Equipment Additional Information [Abstract] Disclosure Property Plant And Equipment Additional Information [Abstract] Disclosure Property Plant And Equipment Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Related Party Transactions Additional Information [Abstract] Disclosure Restricted Cash Additional Information [Abstract] Disclosure Restricted Cash Additional Information [Abstract] Disclosure Restricted Cash Additional Information [Abstract] Disclosure Segment Reporting Additional Information [Abstract] Disclosure Segment Reporting Additional Information [Abstract] Disclosure Segment Reporting Additional Information [Abstract] Disclosure - Segment Reporting - Company's Revenue by Geographic Region [Abstract] Disclosure Segment Reporting Companys Revenue By Geographic Region [Abstract] Disclosure - Segment Reporting - Company's Revenue by Geographic Region [Abstract] Disclosure Subsequent Events Additional Information [Abstract] Disclosure Subsequent Events Additional Information [Abstract] Disclosure Subsequent Events Additional Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Table] Document Information [Table] Document Period End Date Document Period End Date Document Type Document Type Due From Related Parties Current Account receivables from related party Early Exercised Options Subject To Repurchase [Member] Early Exercised Options Subject To Repurchase [Member] Early Exercised Options Subject To Repurchase [Member] Earnings Per Share [Abstract] Net income per share attributable to ordinary shareholders: Earnings Per Share Basic Basic Earnings Per Share Diluted Diluted Earnings Per Share Policy [Text Block] Net Income (Loss) Per Ordinary Share Earnings Per Share [Text Block] Net Income Per Ordinary Share Employee Related Liabilities Current Accrued employee compensation Employees Contribution To Employees Stock Purchase Plan As Percentage Of Employees Salary Employees Contribution To Employees Stock Purchase Plan As Percentage Of Employees Salary Percentage of compensation contribution by shareholders Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] 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] Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Weighted-average period, Restricted Stock Units Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Total unrecognized compensation cost, restricted stock units Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Total unrecognized compensation cost related to stock options Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Employee stock purchase plan award [Member] Employee Stock Purchase Plans [Member] Employee Stock Purchase Plans [Member] Employee Stock Purchase Plan [Member] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Information [Line Items] Entity Information [Line Items] Entity Registrant Name Entity Registrant Name Entity Wide Information Revenue From External Customer [Line Items] Revenue from External Customer [Line Items] Entity Wide Revenue Major Customer Percentage Percentage of revenue Estimated Effective Income Tax Rate Estimated Effective Income Tax Rate Estimated effective tax rate Europe [Member] Europe [Member] Europe [Member] Exercised But Unvested Stock Options Repurchased During Reporting Period Exercised But Unvested Stock Options Repurchased During Reporting Period Unvested early exercised options, repurchased Exercise Price Range Five [Member] Exercise Price Range Five [Member] Exercise Price Range Five [Member] Exercise Price Range Four [Member] Exercise Price Range Four [Member] Exercise Price Range Four [Member] Exercise Price Range One [Member] Exercise Price Range One [Member] Exercise Price Range One [Member] Exercise Price Range Six [Member] Exercise Price Range Six [Member] Exercise Price Range Six [Member] Exercise Price Range Three [Member] Exercise Price Range Three [Member] Exercise Price Range Three [Member] Exercise Price Range Two [Member] Exercise Price Range Two [Member] Exercise Price Range Two [Member] Fair Value Of Financial Instruments Policy Fair Market Value of Financial Instruments Finite Lived Intangible Assets Accumulated Amortization Accumulated Amortization Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite Lived Intangible Assets Gross Gross Carrying Value Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite Lived Intangible Assets Net Net Carrying Value Finite Lived Intangible Asset Useful Life Intangible assets estimated life Foreign Currency Transactions And Translations Policy [Text Block] Foreign Currency Transactions Furniture And Fixtures Gross Furniture and fixtures Gain Loss On Sale Of Property Plant Equipment Loss on disposal of long-lived assets Gross Profit Gross profit Hong Kong [Member] Hong Kong [Member] Hong Kong [Member] Impairment Or Disposal Of Long Lived Assets Including Intangible Assets Policy Policy [Text Block] Impairment of Long-Lived Assets Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income before income taxes Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Line Items] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Line Items] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Line Items] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Table] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Table] Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments [Table] Income Loss From Continuing Operations Before Income Taxes Table [Text Block] Income Loss From Continuing Operations Before Income Taxes Table [Text Block] Summary of Reported Income Tax Income Statement [Abstract] Income Statement [Abstract] Income Tax Disclosure [Text Block] Income Taxes Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes Paid Cash paid for income taxes Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Income Tax Expense Benefit Income tax expense Provision for income taxes Income Tax Policy [Text Block] Income Taxes Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Income Taxes Payable Income taxes payable Increase Decrease In Accrued Liabilities Accrued liabilities Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Inventories Inventories Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase Decrease In Other Operating Assets Other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other current assets Increase Decrease In Restricted Cash Restricted Cash Incremental Common Shares Attributable To Share Based Payment Arrangements Employee stock options Indemnification Guarantee [Member] Indemnification Agreement [Member] The aggregate liquidation preference is the amount that the holders of a given series of preferred stock will receive prior to distribution of amounts to holders of common stock. The trigger for the payment of the liquidation preference is a sale or liquidation of the entity. The liquidation preference is the per share liquidation value times the total number of outstanding shares of preferred stock. Initial Liquidation Preference Initial liquidation preference Intangible Assets Disclosure [Text Block] Intangible Assets Intangible Assets Finite Lived Policy Intangible Assets Intangible Assets Net Excluding Goodwill Intangible assets, net Intellectual Property [Member] Intellectual Property [Member] Intellectual Asset [Member] Inventories Net [Line Items] Inventories Net [Line Items] Inventories Net [Line Items] Inventories [Table] Inventories [Table] Inventories [Table] Inventory Disclosure [Text Block] Inventories Inventory Finished Goods Finished goods Inventory Net Inventories Total Inventory Policy [Text Block] Inventories Inventory Work In Process Work-in-progress I P O [Member] After IPO [Member] Lease And Rental Expense Net rental expenses Leasehold Improvements Gross Leasehold improvements Lease Policy [Text Block] Operating Leases Legal Entity [Axis] Legal Entity [Axis] Liabilities Total liabilities Liabilities And Stockholders Equity [Abstract] LIABILITIES, REDEEMABLE CONVERTIBLE PREFERENCE SHARES AND SHAREHOLDERS' EQUITY Liabilities Assumed 1 Increase in accrued liabilities related to non-monetary financing activities Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Liabilities Redeemable Convertible Preference Shares and Shareholders Equity Liabilities Redeemable Convertible Preference Shares And Shareholders Equity Total liabilities, redeemable convertible preference shares and shareholders' equity Loss Contingencies By Nature Of Contingency [Axis] Loss Contingency Nature [Axis] Loss Contingency Accrual At Carrying Value Liabilities recorded under indemnification obligations Loss Contingency Damages Paid Value Payments under indemnification obligations Loss Contingency Nature [Domain] Loss Contingency, Nature [Domain] Maximum Period That Stock Option Can Be Exercised Maximum Period That Stock Option Can Be Exercised Term of up to 10 years from grant date Minimum percentage of voting stock used to define related party. Minimum Percentage Of Voting Stock Used To Define Related Party Percentage of entity's voting stock owned by related party Net Cash Provided By Used In Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Net Cash Provided By Used In Investing Activities Net cash used in investing activities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Net Cash Provided By Used In Operating Activities Net cash provided by operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Net income after adjustments for non-cumulative dividends on preferred stock and undistributed earnings allocated to participating securities under the two-class method. Net Income Available To Common Stockholders Basic Net income allocable to ordinary shareholders - basic Net Income Loss Net income Net income Net Income Loss Available To Common Stockholders Diluted Net income allocable to ordinary shareholders - diluted Net Income Per Common Share [Abstract] Net Income Per Common Share [Abstract] Net income per ordinary share: Net Proceeds From Exercise And Repurchase Of Stock Options Net Proceeds From Exercise And Repurchase Of Stock Options Net proceeds from exercise and repurchase of stock options New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements Noncash Investing And Financing Items [Abstract] Supplemental disclosure of noncash investing activities: Nonoperating Income Expense Other income (loss), net North America [Member] North America [Member] North America [Member] Number Of Installments Number Of Installments Number of quarters payment Numerator [Abstract] Numerator [Abstract] Numerator: Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses: Operating Income Loss Income from operations Operating Leases Future Minimum Payments Due Total future annual minimum lease payments Operating Leases Future Minimum Payments Due Current 2013 Operating Leases Future Minimum Payments Due In Five Years 2017 Operating Leases Future Minimum Payments Due In Four Years 2016 Operating Leases Future Minimum Payments Due In Three Years 2015 Operating Leases Future Minimum Payments Due In Two Years 2014 Operating Leases Future Minimum Payments Due [Line Items] Operating Leases Future Minimum Payments Due [Line Items] Operating Leases Future Minimum Payments Due [Line Items] Operating Leases Future Minimum Payments Due [Table] Operating Leases Future Minimum Payments Due [Table] Operating Leases Future Minimum Payments Due [Table] Ordinary Shares Reserved For Future Issuance Of Exercise Of Outstanding Warrants Ordinary Shares Reserved For Future Issuance Of Exercise Of Outstanding Warrants Shares reserved for warrants Ordinary Shares Reserved For Future Issuance Of Stock Option And Restricted Stock Units Ordinary Shares Reserved For Future Issuance Of Stock Option And Restricted Stock Units Shares reserved for options and restricted stock units Preference share warrants converted to ordinary share warrants. Ordinary Share Warrants Total ordinary share warrants outstanding Organization And Summary Of Significant Accounting Policies [Line Items] Organization And Summary Of Significant Accounting Policies [Line Items] Organization And Summary Of Significant Accounting Policies [Line Items] Organization Consolidation And Presentation Of Financial Statements Disclosure And Significant Accounting Policies [Text Block] Organization and Summary of Significant Accounting Policies Formation and business of the entity. Organization Policy [Text Block] Organization Other Accrued Liabilities Current Other accrued liabilities Other Assets Noncurrent Other assets Other Liabilities Noncurrent Other long-term liabilities Payments To Acquire Intangible Assets Purchase of intangible assets Payments To Acquire Property Plant And Equipment Purchase of property and equipment Percentage Of License Revenue To Revenue Percentage Of License Revenue To Revenue Percentage of license revenue to company's revenue Percentage Of Purchase Plan Price Per Share Equal To Fair Market Value Percentage Of Purchase Plan Price Per Share Equal To Fair Market Value Percentage purchase price of shares Percentage of voting stock owned by related party. Percentage Of Voting Stock Owned By Related Party Percentage of investor own voting stock Preferred Stock Dividends And Other Adjustments Less: amount allocable to preference shareholders Preferred Stock Par Or Stated Value Per Share Preference shares, par value Preferred Stock Shares Authorized Preference shares, shares authorized Preferred Stock Shares Issued Preference shares, shares issued Preferred Stock Shares Outstanding Preference shares, shares outstanding Preferred Stock Value Preference shares, $0.00045 par value per share, 20,000,000 shares authorized and no shares issued and outstanding at October 31, 2012; no shares authorized, issued and outstanding at January 31, 2012; Prepaid Expense And Other Assets Current Prepaid expenses and other current assets The cash inflow associated with the amount received from entity's first offering of stock to the public. Proceeds From Initial Public Offering Proceeds from Initial Public Offering Proceeds From Issuance Initial Public Offering Net proceeds from the sale of over-allotment shares Proceeds from initial public offering, net of underwriting discounts and commissions and offering costs Product Warranty Accrual Classified Current Accrued warranty Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, machinery and equipment and office equipment. Property And Equipment Machinery and equipment Property Plant And Equipment Disclosure [Text Block] Property and Equipment, Net Property Plant And Equipment Gross Property, Plant and Equipment, Gross, Total Property Plant And Equipment [Line Items] Property, Plant and Equipment [Line Items] Property Plant And Equipment Net Property and equipment, net Total property and equipment, net Property Plant And Equipment Policy [Text Block] Property and Equipment Property Plant And Equipment [Text Block] Property and Equipment Property Plant And Equipment Useful Life Estimated useful life Purchase commitment within one year or operating cycle, if longer. Purchase Commitment Current Total purchase commitments Receivables Policy [Text Block] Trade Accounts Receivable and Allowances for Doubtful Accounts Redeemable Convertible Preference Shares Outstanding. Redeemable Convertible Preference Shares Outstanding Outstanding redeemable convertible preference shares Redeemable Convertible Preferred Stock [Member] Redeemable Convertible Preference Shares (If-Converted Basis) [Member] Redeemable Convertible Preferred Stock Warrants Fair Value Redeemable Convertible Preferred Stock Warrants Fair Value Fair value of the warrants Related Party [Domain] Related Party [Domain] Related Party Lease Expenses Related Party Lease Expenses Operating lease expense related to license agreement included in research and development cost Related Party Transaction Amounts Paid To Related Party Related Party Transaction Amounts Paid To Related Party Payment for license agreement Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related Party Transactions By Related Party [Axis] Related Party [Axis] Related Party Transactions Disclosure [Text Block] Related-Party Transactions Research And Development Expense Research and development Research And Development Expense [Member] Research and development [Member] Research And Development Expense Policy Research and Development Restricted Cash And Cash Equivalents Amount of Restricted Cash Restricted cash Restricted Cash And Cash Equivalents Items [Line Items] Restricted Cash and Cash Equivalents Items [Line Items] Disclosure of the cash and cash items which are restricted as to withdrawal or usage. The provisions of any restrictions are described in a note to the financial statements. Restricted Cash Disclosure [Text Block] Restricted Cash Restricted Stock Units R S U [Member] Restricted Stock Units [Member] Retained Earnings Accumulated Deficit Retained earnings Revenue From Related Parties Recognized revenue from related party Revenue Recognition Policy [Text Block] Revenue Recognition Revenues Revenue Total revenue Sale Of Stock Name Of Transaction [Domain] Sale of Stock, Name of Transaction [Domain] Schedule Of Accrued Liabilities Table [Text Block] Accrued Liabilities Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Ordinary Per Share Schedule of Convertible Preferred Stock [Table] Schedule Of Convertible Preferred Stock [Table] Schedule of Convertible Preferred Stock [Table] Schedule Of Earnings Per Share Basic And Diluted [Line Items] Schedule Of Earnings Per Share Basic And Diluted [Line Items] Schedule Of Earnings Per Share Basic And Diluted [Line Items] Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule Of Earnings Per Share Basic And Diluted [Table] Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Computation of Basic and Diluted Income Per Ordinary Share Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs By Report Line [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] 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] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Classification of Stock-Based Compensation Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Table] Revenue from External Customers by Products and Services [Table] Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Future Annual Minimum Lease Payments Schedule Of Intangible Assets And Goodwill Table [Text Block] Intangible Assets Schedule Of Inventory Current Table [Text Block] Inventory Schedule Of Organization And Summary Of Significant Accounting Policies [Table] Schedule Of Organization And Summary Of Significant Accounting Policies [Table] Schedule Of Organization And Summary Of Significant Accounting Policies [Table] Schedule Of Property Plant And Equipment [Table] Schedule of Property, Plant and Equipment [Table] Schedule Of Related Party Transactions By Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Schedule Of Restricted Cash And Cash Equivalents [Table] Schedule of Restricted Cash and Cash Equivalents [Table] Schedule Of Revenue From External Customers Attributed To Foreign Countries By Geographic Area [Text Block] Company's Revenue by Geographic Region Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Restricted Stock Units Activities Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Table] Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table] Tabular disclosure of outstanding option and exercisable option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. Schedule Of Share Based Compensation Stock Option Outstanding And Exercisable By Exercise Price Range Table [Text Block] Stock Options Outstanding and Exercisable Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Stock Option Activities Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Weighted-Average Assumptions Used to Estimate Fair Value Schedule Of Stock By Class [Table] Schedule of Stock by Class [Table] Segment Geographical [Domain] Segment, Geographical [Domain] Segment Reporting Disclosure [Line Items] Segment Reporting Disclosure [Line Items] Segment Reporting Disclosure [Line Items] Segment Reporting Disclosure [Table] Segment Reporting Disclosure [Table] Segment Reporting Disclosure [Table] Segment Reporting Disclosure [Text Block] Segment Reporting Selling General And Administrative Expense Selling, general and administrative Selling General And Administrative Expenses [Member] Selling, general and administrative [Member] Selling General And Administrative Expenses Policy [Text Block] Selling, General and Administrative Series A Preferred Stock [Member] Series A Redeemable Convertible Preference Shares [Member] Series B Preferred Stock [Member] Series B Redeemable Convertible Preference Shares [Member] Series C Preferred Stock [Member] Series C Redeemable Convertible Preference Shares [Member] Series D Preferred Stock [Member] Series D Redeemable Convertible Preference Shares [Member] Share Based Compensation Stock-based compensation Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Forfeited, shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Forfeited, Weighted-Average Grant-Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Granted, shares Restricted stock units granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Fair Value of Restricted Stock Units, Grant Date Granted, Weighted-Average Grant-Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Unvested, ending balance shares Unvested, beginning balance shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Unvested ending balance, Weighted-Average Grant-Date Fair Value Unvested beginning balance, Weighted-Average Grant-Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Vested, shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Vested, Weighted-Average Grant-Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Dividend yield Expected dividend yield Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term 1 Expected term (years) Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value 1 Exercisable , aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Exercisable, Shares Range of Exercise Prices, Shares Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Exercisable , Weighted average exercise price Range of Exercise Prices, Stock Options Exercisable, Weighted Average Exercise Price Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term 1 Exercisable , Weighted Average Remaining Contractual Term Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value Exercised, Total Intrinsic Value of options Exercised Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Forfeited, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Granted, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Granted, Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Outstanding , aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Outstanding, Shares Outstanding, Shares Range of Exercise Prices, Shares Outstanding Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Outstanding , Weighted average exercise price Range of Exercise Prices, Stock Options Outstanding, Weighted Average Exercise Price Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term 2 Outstanding , Weighted Average Remaining Contractual Term Range of Exercise Prices, Weighted Average Remaining Contractual Life Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value Vested and expected to vest , aggregate intrinsic value Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number Vested and expected to vest, Shares Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price Vested and expected to vest, Weighted average exercise price Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term 1 Vested and expected to vest, Weighted Average Remaining Contractual Term Share Based Compensation Arrangement By Share Based Payment Award Plan Modification Incremental Compensation Cost Additional stock-based compensation Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Award Type [Domain] Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Exercised, Weighted average exercise price Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Forfeited, Weighted average exercise price Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Granted, Weighted average exercise price Share Based Compensation Option And Incentive Plans Policy Stock-Based Compensation Share Based Compensation Percentage Of Stock Awards Vested Share Based Compensation Percentage Of Stock Awards Vested Percentage of Awards Vested Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Axis] Exercise Price Range [Axis] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Domain] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit Range of Exercise Prices, Lower Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit Range of Exercise Prices, Upper Share Based Goods And Nonemployee Services Transaction Expense Non-employee stock-based compensation Share Distribution [Member] Allotment Shares [Member] Shareholder [Member] Shareholder [Member] Shareholder [Member] Share Price Public offering price of share Shares issued during period shares sold by selling shareholders. Shares Issued During Period Shares Sold By Selling Shareholders Shares issued during period shares sold by selling shareholders Shares Reserved For Employee Stock Purchase Plan Shares Reserved For Employee Stock Purchase Plan Shares reserved for employee stock purchase plan Standard Product Warranty Policy Warranty Costs Statement Class Of Stock [Axis] Class of Stock [Axis] Statement Geographical [Axis] Geographical [Axis] Statement [Line Items] Statement [Line Items] Statement Of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement Of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Stock Based Compensation [Abstract] Stock Based Compensation [Abstract] Stock-based compensation: Stock based compensation expense recognized during the period arising from restricted stock units. Stock Based Compensation Expense Stock Based Compensation, Restricted Stock Units Stockholders Equity Total shareholders' equity Stockholders Equity [Abstract] Shareholders' equity: Stock Issued During Period Shares New Issues Initial Public Offering of shares Stock Issued During Period Shares Stock Options Exercised Exercised, Shares Weighted-average period over which unrecognized compensation is expected to be recognized for stock options. Stock Options Compensation Cost Not Yet Recognized Period For Recognition Weighted-average period, stock options Stock Options [Member] Options To Purchase Ordinary Shares [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event [Member] Subsequent Events [Member] Subsequent Events [Text Block] Subsequent Events Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsidiary Sale Of Stock [Axis] Subsidiary, Sale of Stock [Axis] Summary Of Ordinary Shares Reserved For Future Issuance Table [Text Block] Summary Of Ordinary Shares Reserved For Future Issuance Table [Text Block] Ordinary Shares Reserved for Future Issuance Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Temporary Equity [Abstract] Redeemable convertible preference shares (Note 8): Temporary Equity Par Or Stated Value Per Share Redeemable convertible preference shares, par value Temporary Equity Redemption Value Series A, B, C and D redeemable convertible preference shares, $0.00045 par value per share - 5,611,111, 3,665,550, 3,027,777 and 2,222,222 shares authorized at January 31, 2012, respectively; 5,611,107, 3,629,253, 3,027,771 and 1,047,596 shares issued and outstanding at January 31, 2012, respectively; initial liquidation preference of $10,100, $13,000, $16,350 and $11,785 at January 31, 2012, respectively Temporary Equity Shares Authorized Redeemable convertible preference shares, shares authorized Temporary Equity Shares Issued Redeemable convertible preference shares, shares issued Temporary Equity Shares Outstanding Redeemable convertible preference shares, shares outstanding Text Block [Abstract] Text Block [Abstract] Threshold Limit Of Entity Wide Revenue Major Customer Percentage Threshold Limit Of Entity Wide Revenue Major Customer Percentage Threshold limit Trading Symbol Trading Symbol Undistributed Earnings Allocated To Participating Securities Less: amount allocable to unvested early exercised options United States [Member] United States [Member] United States [Member] Unrecognized Tax Benefits Unrecognized tax benefit Unvested stock options exercised but subject to repurchase by the entity. Unvested Stock Options Exercised Refundable exercised unvested option Unvested Stock Option Subject To Repurchase Unvested Stock Option Subject To Repurchase Unvested shares subject to the Company's repurchase rights Use Of Estimates Use of Estimates Vesting period of restricted stock units. Vesting Period For Restricted Stock Units Vesting period of RSU Vesting Period Of Stock Options Vesting Period Of Stock Options Vesting period of stock options Warrant [Member] Warrants to Purchase Redeemable Convertible Preference Share (If-Converted Basis) [Member] Number of [basic] shares or units, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Weighted Average Number Of Common Shares Outstanding Weighted-average ordinary shares outstanding Weighted Average Number Of Diluted Shares Outstanding Diluted Weighted-average ordinary shares - diluted Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation Less: weighted-average unvested early exercised options subject to repurchase Weighted Average Number Of Shares Outstanding [Abstract] Weighted-average shares used to compute net income per share attributable to ordinary shareholders: Weighted Average Number Of Shares Outstanding Basic Basic Weighted-average ordinary shares - basic