Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, net of allowances for sales returns and doubtful accounts of $2,230 as of September 30, 2012 and $2,024 as of December 31, 2011 Accrued expenses and other current liabilities Accrued Expenses And Other Current Liabilities Accrued and other liabilities Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less accumulated depreciation and amortization Accumulated Other Comprehensive Income Loss Net Of Tax Other comprehensive income Additional Paid In Capital Common Stock Additional paid-in capital 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: Allocated Share Based Compensation Expense Stock-based compensation Stock-based compensation expense Allowance For Doubtful Accounts Receivable And Sales Returns Current Allowance For Doubtful Accounts Receivable And Sales Returns Current Accounts receivable, allowances for sales returns and doubtful accounts Amendment Flag Amendment Flag Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Antidilutive securities excluded from computation of loss per share calculation, shares 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 Excluded from Computation of Earnings Per Share, Weighted Average Exercise Price Antidilutive Securities Excluded From Computation Of Earnings Per Share Weighted Average Exercise Price Antidilutive securities excluded from computation of loss per share calculation, weighted average exercise price Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Asia [Member] Asia [Member] Asia Pacific Asset Impairment Charges Impairment of fixed assets 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 B R Brazil C A Canada 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 Cash and cash equivalents Cash And Cash Equivalents At Carrying Value [Abstract] Cash and Cash Equivalents: Cash And Cash Equivalents Disclosure [Text Block] Cash and Cash Equivalents Cash And Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Cash And Cash Equivalents Period Increase Decrease Net decrease in cash and cash equivalents Commitments and Contingencies Disclosure [Line Items] Commitments And Contingencies Disclosure [Line Items] Commitments and Contingencies Disclosure [Line Items] Commitments and Contingencies Disclosure [Table] Commitments And Contingencies Disclosure [Table] Commitments and Contingencies Disclosure Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, Authorized Common Stock Shares Issued Common stock, issued Common Stock Shares Outstanding Common stock, outstanding Common Stock Value Common stock, $0.001 par value. Authorized 180,000 shares; issued and outstanding 31,106 and 30,820 shares as of September 30, 2012 and December 31, 2011, respectively Comprehensive Income Net Of Tax Comprehensive loss Concentration Risk By Type [Axis] Concentration Risk Type [Axis] Concentration Risk Credit Risk Concentration of Risk Concentration Risk Type [Domain] Concentration Risk Type [Domain] Cost Of Revenue Cost of revenue Current Fiscal Year End Date Current Fiscal Year End Date Customer 1 [Member] Customer One [Member] Emirates Telecommunications Corporation Customer 2 [Member] Customer Two [Member] Axtel S.A.B. DE C.V. Debt Disclosure [Text Block] Debt Debt Instrument Basis Spread On Variable Rate Margin floating rate over three-months LIBOR rate Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument [Table] Schedule of Long-term Debt Instruments [Table] Depreciation And Amortization Depreciation and amortization Disclosure - Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract] Disclosure Antidilutive Securities Excluded From Computation Of Earnings Per Share [Abstract] Disclosure - Antidilutive Securities Excluded from Computation of Earnings Per Share [Abstract] Disclosure - Assumptions used to Value Option Grants [Abstract] Disclosure Assumptions Used To Value Option Grants [Abstract] Disclosure - Assumptions used to Value Option Grants [Abstract] Disclosure - Cash and Cash Equivalents [Abstract] Disclosure Cash And Cash Equivalents [Abstract] Disclosure - Cash and Cash Equivalents [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure Commitments And Contingencies Additional Information [Abstract] Disclosure Debt Additional Information [Abstract] Disclosure Debt Additional Information [Abstract] Disclosure Debt Additional Information [Abstract] Disclosure - Estimated Future Lease Payments under all Non-Cancelable Operating Leases [Abstract] Disclosure Estimated Future Lease Payments Under All Non Cancelable Operating Leases [Abstract] Disclosure - Estimated Future Lease Payments under all Non-Cancelable Operating Leases [Abstract] Disclosure Inventories [Abstract] Disclosure Inventories [Abstract] Disclosure Inventories [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Disclosure - Open Tax Years for Major Jurisdictions [Abstract] Disclosure Open Tax Years For Major Jurisdictions [Abstract] Disclosure - Open Tax Years for Major Jurisdictions [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 [Abstract] Disclosure Property And Equipment Net [Abstract] Disclosure - Property and Equipment, Net [Abstract] Disclosure - Property and Equipment, Net - Additional Information [Abstract] Disclosure Property And Equipment Net Additional Information [Abstract] Disclosure - Property and Equipment, Net - Additional Information [Abstract] Disclosure - Reconciliation of Changes in Accrued Warranties and Related Costs [Abstract] Disclosure Reconciliation Of Changes In Accrued Warranties And Related Costs [Abstract] Disclosure - Reconciliation of Changes in Accrued Warranties and Related Costs [Abstract] Disclosure - Revenue by Geography [Abstract] Disclosure Revenue By Geography [Abstract] Disclosure - Revenue by Geography [Abstract] Disclosure - Revenue by Products and Services [Abstract] Disclosure Revenue By Products And Services [Abstract] Disclosure - Revenue by Products and Services [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure Stock Based Compensation Additional Information [Abstract] Disclosure - Stock-Based Compensation Expense [Abstract] Disclosure Stock Based Compensation Expense [Abstract] Disclosure - Stock-Based Compensation Expense [Abstract] Disclosure - Stock Option Activity [Abstract] Disclosure Stock Option Activity [Abstract] Disclosure - Stock Option Activity [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 [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share Basic And Diluted Basic and diluted net loss per share Earnings Per Share [Text Block] Net Loss Per Share Effect Of Exchange Rate On Cash And Cash Equivalents Effect of exchange rate changes on cash Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation costs Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Unrecognized compensation costs, weighted average recognition period Employee Stock [Member] Employee Stock Purchase Plan Employee Stock Option [Member] Employee stock options Entities [Table] Entities [Table] 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 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 net revenue Europe, Middle East and Africa [Member] Europe Middle East And Africa [Member] Europe, Middle East, Africa Fair Value Of Financial Instruments Policy Fair Value of Financial Instruments Federal Federal [Member] Federal Furniture And Fixtures Gross Furniture and fixtures Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year. Future Minimum Rental Payments [Text Block] Estimated Future Lease Payments under All Non-Cancelable Operating Leases Gain Loss On Disposition Of Property Loss on disposal of fixed assets General And Administrative Expense General and administrative Germany [Member] Germany [Member] Germany Gross Profit Gross profit Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments Loss before income taxes Income Statement [Abstract] Income Statement [Abstract] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Income Tax Disclosure [Text Block] Income Taxes Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Line Items] Income Taxes [Table] Income Taxes [Table] Income Taxes [Table] Income Tax Expense Benefit Income tax provision (benefit) Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Liabilities And Other Operating Liabilities Accrued and other liabilities 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 Interest Expense Interest expense International [Member] International [Member] Total International Inventory Disclosure [Line Items] Inventory Disclosure [Line Items] Inventory Disclosure [Line Items] Inventory Disclosure [Table] Inventory Disclosure [Table] Inventory Disclosure [Table] Inventory Disclosure [Text Block] Inventories Inventory Finished Goods Net Of Reserves Finished goods Inventory Net Inventories Inventories Inventory Net Items Net Of Reserve Alternative [Abstract] Inventories: Inventory Policy [Text Block] Inventories Inventory Raw Materials Net Of Reserves Raw materials Inventory Work In Process Net Of Reserves Work in process Latin America Latin America [Member] Latin America Leasehold Improvements Gross Leasehold improvements Legal Entity [Axis] Legal Entity [Axis] Letters Of Credit Outstanding Amount WFB credit facility, commitment as security for various letters of credit Liabilities Total liabilities Liabilities And Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity [Abstract] Liabilities and Stockholders' Equity Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Line Of Credit Facility Amount Outstanding WFB credit facility, outstanding amount Line Of Credit Facility Expiration Date 1 WFB credit facility, expiration date Line Of Credit Facility Interest Rate At Period End WFB credit facility, interest rate Line Of Credit Facility Maximum Borrowing Capacity WFB credit facility, maximum borrowing capacity Line Of Credit Facility Remaining Borrowing Capacity WFB credit facility, unused and available amount Line Of Credit Facility Unused Capacity Commitment Fee Percentage WFB credit facility, commitment fee on unused capacity, percentage Lines Of Credit Current Line of credit Liquidity Disclosure [Text Block] Risks and Uncertainties Long Term Purchase Commitment Amount Amount of non-cancellable purchase commitments outstanding Machinery And Equipment Gross Machinery and equipment Major Customers [Axis] Major Customers [Axis] Maximum [Member] Maximum Minimum [Member] Minimum Money Market Funds At Carrying Value Money Market Funds Movement In Standard And Extended Product Warranty Increase Decrease [Roll Forward] Warranty Liability Name Of Major Customer [Domain] Name of Major Customer [Domain] Net Cash Provided By Used In Financing Activities Net cash (used in) 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 used in operating activities Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Net Income Loss Net loss Net loss Non Employee Non Employee [Member] Non-employees Non United States [Member] Non United States [Member] Other than the United States North America North America [Member] Total North America Number of Stock Option Plans Number Of Stock Option Plans Number of active stock option plans Open Tax Year Open tax years Tabular disclosure of tax year that remains open to examination under enacted tax laws. Open Tax Year Table [Text Block] Open Tax Years for Major Jurisdictions Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses: Operating Income Loss Operating loss Operating Leased Assets [Line Items] Operating Leased Assets [Line Items] Operating Leases Future Minimum Payments Due Total minimum lease payments Operating Leases Future Minimum Payments Due Current 2013 Amount of required minimum rental payments maturing in the fourth and fifth fiscal years, and after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Operating Leases Future Minimum Payments Due In Four Years And Thereafter 2016 and thereafter 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 Remainder Of Fiscal Year 2012 (remainder of the year) Organization Consolidation Basis Of Presentation Business Description And Accounting Policies [Text Block] Organization and Summary of Significant Accounting Policies Other Assets Noncurrent Other assets Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax Other comprehensive loss - foreign currency translation adjustments Other Liabilities Noncurrent Other long-term liabilities Other Nonoperating Income Expense Other income (expense), net Payments To Acquire Property Plant And Equipment Purchases of property and equipment Percentage of Total Net Accounts Receivables. Percentage Of Total Net Accounts Receivables Percentage of net accounts receivable Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Proceeds from exercise of stock options and purchases under the ESPP plan Product [Member] Products Product Or Service [Axis] Products and Services [Axis] Products And Services [Domain] Products and Services [Domain] Product Warranty Accrual Ending balance Beginning balance Product Warranty Accrual Payments Claims and settlements Product Warranty Accrual Warranties Issued Charged to cost of revenue Product Warranty Term Product Warranty Term Extended product warranty, term 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 Property and equipment, net Property Plant And Equipment Net [Abstract] Property and equipment: Property Plant And Equipment Other Computers and acquired software Property Plant And Equipment Policy [Text Block] Property and Equipment