Balance Sheet Components [Abstract] Balance Sheet Components [Abstract] Inventories Schedule of Inventory, Current [Table Text Block] Prepaid expenses and other current assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Property and equipment, net Property, Plant and Equipment, Schedule of Significant Acquisitions and Disposals [Table Text Block] Other long-term assets Schedule of Other Assets, Noncurrent [Table Text Block] Accrued liabilities Schedule of Accrued Liabilities [Table Text Block] Earnings Per Share [Abstract] EARNINGS PER SHARE Earnings Per Share [Text Block] Fair Value Disclosures [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Debt Disclosure [Abstract] Summary of estimated debt and interest payment obligations Schedule of Debt [Table Text Block] Debt Disclosure [Table] Debt Disclosure [Table] Debt Disclosure [Table] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Base rate Base Rate [Member] LIBOR London Interbank Offered Rate (LIBOR) [Member] Federal Fund Rate Federal Fund Rate [Member] Federal Fund Rate [Member] 30 Day LIBOR 30 Day LIBOR [Member] 30 Day LIBOR [Member] 60 Day LIBOR 60 Day LIBOR [Member] 60 Day LIBOR [Member] 90 Day LIBOR 90 Day LIBOR [Member] 90 Day LIBOR [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit [Member] Line of Credit [Member] Revolving credit facility Revolving Credit Facility [Member] Sublimit for letters of credit Letter of Credit [Member] Sublimit for swingline loan advances Swingline Loan [Member] Swingline Loan [Member] Term loan facility Term Loan [Member] Term Loan [Member] Previous credit agreement Previous Credit Agreement [Member] Previous Credit Agreement [Member] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Through July 1, 2014 Debt Instrument, Redemption, Period One [Member] October 1, 2014 through July 1, 2015 Debt Instrument, Redemption, Period Two [Member] October 1, 2015 through July 1, 2017 Debt Instrument, Redemption, Period Three [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Debt Disclosure [Line Items] Debt Disclosure [Line Items] Debt Disclosure [Line Items] Revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Borrowed term loans under the term loan facility Line of Credit Facility, Amount Outstanding Remaining borrowing capacity under revolving credit facility Line of Credit Facility, Remaining Borrowing Capacity Borrowings under the revolving credit facility Proceeds from Lines of Credit Debt basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Variable base rate Debt Instrument Basis Spread On Variable Base Rate, Term Debt Instrument Basis Spread On Variable Base Rate, Term Quarterly principal payments Line of Credit Facility, Periodic Payment, Principal Excess cash flow percent Percentage Of Excess Cash Flow For Term Loan Repayment Percentage of excess cash flow for term loan repayment. Leverage ratio Maximum Leverage Ratio For Repayment Of Term Loan As Percentage Of Excess Cash Flows Maximum leverage ratio for repayment of Term Loan as percentage of excess cash flows. Company's capital stock of existing and future foreign subsidiaries Percentage Of Company's Capital Stock Of Existing And Future Foreign Subsidiaries Secured Against Term Loan Percentage of company's capital stock of existing and future foreign subsidiaries secured against term loan. Penal interest rate in case of default Percentage Increase In Penal Interest Rate In Case Of Default Percentage increase in the penal interest rate in case of default. Debt Instrument, Periodic Payment Debt Instrument, Periodic Payment Repayments on term loan balance Payments for Loans Short term debt obligations Short-term Debt Long-term debt obligations Long-term Debt, Excluding Current Maturities DEBT Debt Disclosure [Text Block] Warranty accrual Standard Product Warranty Accrual Accrued compensation and benefits Accrued Employee Benefits, Current Accrual for an export compliance matter Accrued Export Compliance Matter Current Accrued export compliance matter current. Other accruals Other Accrued Liabilities, Current Total accrued liabilities Accrued Liabilities, Current Common Stock And Treasury Stock [Abstract] Common Stock and Treasury Stock (Additional Information) [Abstract] Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Repurchase of common stock Stock Repurchase Program, Authorized Amount Share repurchases (in shares) Stock Repurchased During Period, Shares Dividends Dividends, Common Stock, Cash Cash dividends declared per common share Common Stock, Dividends, Per Share, Declared Product Warranties Disclosures [Abstract] Warranty obligations Schedule of Product Warranty Liability [Table Text Block] Accounting Policies [Abstract] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Document and Entity Information [Abstract] Document and Entity Information [Abstract] Document Information [Table] Document Information [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Entity Information [Line Items] Entity Information [Line Items] Document Type Document Type Amendment Flag Amendment Flag Document Period End Focus Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested RSUs, number of Shares, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number RSUs granted, number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period RSUs vested, number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period RSUs canceled, number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Non-vested RSUs, weighted average grant date fair value, Beginning balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value RSUs granted, weighted average grant date fair value (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value RSUs vested, weighted average grant date fair value (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value RSUs cancelled, weighted average grant date fair value (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Non-vested RSUs, weighted average grant date fair value, Ending balance (in usd per share) Non-vested RSUs, number of Shares, Ending balance 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, by Report Line [Axis] Income Statement Location [Axis] Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain] Income Statement Location [Domain] Cost of sales [Member] Cost of Sales [Member] Research and development [Member] Research and Development Expense [Member] Selling, general and administrative [Member] Selling, General and Administrative Expenses [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Stock-based compensation expense Allocated Share-based Compensation Expense, Net of Tax Segment Reporting [Abstract] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Major Customers [Axis] Customer [Axis] Name of Major Customer [Domain] Customer [Domain] Customer A Customer A [Member] Customer A [Member] Customer B Customer B [Member] Customer B [Member] Customer C Customer C [Member] Customer C [Member] Customer D Customer D [Member] Customer D [Member] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Percentage of revenues Concentration Risk, Percentage Percentage of accounts receivable Entity Wide Accounts Receivable Major Customer Percentage Entity wide accounts receivable major customer percentage. Common stock repurchase activity Schedule Of Common Stock Repurchase Activity Table [Text Block] Schedule Of Common Stock Repurchase Activity Table [Text Block] Statement of Cash Flows [Abstract] Cash Flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income and comprehensive income Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Provision for inventory obsolescence Inventory Write-down Deferred taxes Increase (Decrease) in Deferred Income Taxes Excess tax benefit from employee stock-based awards Excess Tax Benefit from Share-based Compensation, Operating Activities Stock-based compensation Share-based Compensation Loss on disposal of fixed assets Gain (Loss) on Disposition of Property Plant Equipment Write-off of intangible assets Impairment of Intangible Assets, Finite-lived Provision for doubtful accounts Provision for Doubtful Accounts Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Deferred cost of revenues Increase (Decrease) in Deferred Charges Prepaid income taxes Increase (Decrease) in Prepaid Taxes Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Taxes payable Increase (Decrease) in Income Taxes Payable Deferred revenues Increase (Decrease) in Deferred Revenue Accrued liabilities and other Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchase of property and equipment and other long-term assets Payments to Acquire Property, Plant, and Equipment Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from term loan Proceeds from Debt, Net of Issuance Costs Repurchases of common stock Repurchase Of Common Stock Repurchase Of Common Stock Payment of special common stock dividend Payments of Dividends Proceeds from exercise of stock options Proceeds from Stock Options Exercised Excess tax benefit from employee stock-based awards Excess Tax Benefit from Share-based Compensation, Financing Activities Tax withholdings related to net share settlements of restricted stock units Restricted Stock, Value, Shares Issued Net of Tax Withholdings Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of period Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Service Provider Technology Service Provider Technology [Member] Service Provider Technology [Member] Enterprise Technology Enterprise Technology [Member] Enterprise Technology [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total revenues Revenue, Net Revenues by product percentage Revenues By Product Percentage Revenues by product percentage. Vendor deposits Vendor Deposits Current Vendor deposits current. Non-trade receivables Nontrade Receivables, Current Other current assets Other Assets, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Trademarks [Member] Trademarks [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Estimated future amortization trademark, remainder of fiscal year Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Estimated future amortization trademark, 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Two Estimated future amortization trademark, 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated future amortization trademark, 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Four Estimated future amortization trademark, 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Five Finite-Lived Intangible Assets, Amortization Expense, thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Long-term deferred cost of revenues Deferred Cost Of Revenues, Noncurrent Deferred Cost Of Revenues, Noncurrent Intangible assets, net Finite-Lived Intangible Assets, Net Other long-term assets Other Assets, Miscellaneous, Noncurrent Total Other Assets, Noncurrent Amortization of intangible assets Amortization of Intangible Assets Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Revolving Credit Facility [Member] Letter of Credit [Member] Swingline Loan [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Base Rate [Member] Federal Fund Rate [Member] Applicable Interest Rate [Member] Applicable Interest Rate [Member] Applicable Interest Rate [Member] Minimum [Member] Maximum [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Line of credit facility, maximum borrowing capacity Line of credit facility, option, additional maximum borrowing capacity Line of Credit Facility, Option, Additional Maximum Borrowing Capacity Line of Credit Facility, Option, Additional Maximum Borrowing Capacity Line of credit facility, outstanding Long-term Line of Credit Line of credit facility, base rate Debt Instrument, Base Rate, Basis Spread on Variable Rate Debt Instrument, Base Rate, Basis Spread on Variable Rate Line of credit facility, default rate Debt Instrument, Debt Default, Basis Spread Over Applicable Interest Rate Debt Instrument, Debt Default, Basis Spread Over Applicable Interest Rate Line of credit facility, unused capacity, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Finished goods Inventory, Finished Goods, Net of Reserves Raw materials Inventory, Raw Materials, Net of Reserves Inventories Inventory, Net Revenues by product type Revenues By Product Table [Text Block] Revenues by product. Revenues by geography Revenues By Geographical Area Table [Text Block] Revenues by geographical area. Percentage of revenue and accounts receivable Schedule Of Revenue And Accounts Receivable By Major Customers By Reporting Segments Table [Text Block] Schedule of revenue and accounts receivable by major customers by reporting segments. Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Number of Shares, Beginning Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of Shares, Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Number of Shares, Forfeitures and Cancellations Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Number of Shares, Ending Balance Number of Shares, Vested and expected to vest as of December 31, 2013 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Number of Shares, Vested and exercisable as of December 31, 2013 Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Options Outstanding, Weighted Average Exercise Price, Beginning Balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Options, Exercised, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options, Forfeitures and Cancellations, Weighted Average Exercise Price (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Options Outstanding, Weighted Average Exercise Price, Ending Balance (in usd per share) Options, Weighted Average Exercise Price, Vested and expected to vest, Ending Balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options, Weighted Average Exercise Price, Vested and exercisable, Ending Balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Options outstanding, Weighted Average Remaining Contractual Term, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Options, Remaining Contractual Term, Vested and expected to vest, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Options, Weighted Average Remaining Contractual Term, Vested and exercisable, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Options outstanding, Intrinsic Value, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options, Aggregate Intrinsic Value, Vested and expected to vest, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Options, Aggregate Intrinsic Value, Vested and exercisable, Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] International International [Member] International [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Statement of Financial Position [Abstract] Allowance for doubtful accounts receivable Allowance for Doubtful Accounts Receivable, Current Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Treasury stock, shares Treasury Stock, Shares Computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Potential shares of common stock excluded from diluted per share calculation Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] STOCK BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] ACCRUED WARRANTY Product Warranty Disclosure [Text Block] Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Accounts receivable, net of allowance for doubtful accounts of $1,400 and $2,200, respectively Accounts Receivable, Net, Current Inventories Current deferred tax asset Current Deferred Tax Assets Revenue Current Deferred Tax Assets Revenue Prepaid income taxes Prepaid Taxes Prepaid expenses and other current assets Total current assets Assets, Current Property and equipment, net Property, Plant and Equipment, Net Long-term deferred tax asset Deferred Tax Assets, Net of Valuation Allowance, Noncurrent Other long–term assets Total assets Assets Liabilities and Stockholders' Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Customer deposits Customer Deposits, Current Deferred revenues Deferred Revenue, Current Income taxes payable Taxes Payable, Current Debt - short-term Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Long-term taxes payable Unrecognized Tax Benefits In Long Term Income Taxes Payable Unrecognized Tax Benefits In Long Term Income Taxes Payable Debt - long-term Deferred revenues - long-term Deferred Revenue, Noncurrent Total liabilities Liabilities Commitments and contingencies (Note 8) Commitments and Contingencies Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock—$0.001 par value; 50,000,000 shares authorized; none issued Preferred Stock, Value, Issued Common stock—$0.001 par value; 500,000,000 shares authorized: 88,064,987 and 87,213,803 outstanding at March 31, 2014 and June 30, 2013, respectively Common Stock, Value, Issued Additional paid–in capital Additional Paid in Capital Treasury stock—44,238,960 shares held in treasury at March 31, 2014 and June 30, 2013 Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Debt payment obligations, 2014 (remainder) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year Interest payments on debt payment obligations, 2014 (remainder) Long Term Debt Maturities Repayments Of Interest Remainder Of Fiscal Year Long Term Debt Maturities Repayments Of Interest Remainder Of Fiscal Year Total, 2014 (remainder) Long Term Debt Maturities Repayments Of Principal And Interest Remainder Of Fiscal Year Long Term Debt Maturities Repayments Of Principal And Interest Remainder Of Fiscal Year Debt payment obligations, 2015 Long-term Debt, Maturities, Repayments of Principal in Year Two Interest payments on debt payment obligations, 2015 Long Term Debt Maturities Repayments Of Interest In Year Two Long Term Debt Maturities Repayments Of Interest In Year Two Total, 2015 Long Term Debt Maturities Repayments Of Principal And Interest In Year Two Long Term Debt Maturities Repayments Of Principal And Interest In Year Two Debt payment obligations, 2016 Long-term Debt, Maturities, Repayments of Principal in Year Three Interest payments on debt payment obligations, 2016 Long Term Debt Maturities Repayments Of Interest In Year Three Long Term Debt Maturities Repayments Of Interest In Year Three Total, 2016 Long Term Debt Maturities Repayments Of Principal And Interest In Year Three Long Term Debt Maturities Repayments Of Principal And Interest In Year Three Debt payment obligations, 2017 Long-term Debt, Maturities, Repayments of Principal in Year Four Interest payments on debt payment obligations, 2017 Long Term Debt Maturities Repayments Of Interest In Year Four Long Term Debt Maturities Repayments Of Interest In Year Four Total, 2017 Long Term Debt Maturities Repayments Of Principal And Interest In Year Four Long Term Debt Maturities Repayments Of Principal And Interest In Year Four Debt payment obligations, 2018 Long-term Debt, Maturities, Repayments of Principal in Year Five Interest payments on debt payment obligations, 2018 Long Term Debt Maturities Repayments Of Interest In Year Five Long Term Debt Maturities Repayments Of Interest In Year Five Total, 2018 Long Term Debt Maturities Repayments Of Principal And Interest In Year Five Long Term Debt Maturities Repayments Of Principal And Interest In Year Five Debt payment obligations Long-term Debt Interest payments on debt payment obligations Long Term Debt Maturities Repayments Of Interest Long Term Debt Maturities Repayments Of Interest Total Long Term Debt Maturities Repayments Of Principal And Interest Long Term Debt Maturities Repayments Of Principal And Interest Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Beginning balance Accruals for warranties issued during the period Standard Product Warranty Accrual, Warranties Issued Warranty costs incurred during the period Standard Product Warranty Accrual, Payments Ending balance Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Chief Executive Officer Chief Executive Officer [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Aircraft Lease Agreement Lease Agreements [Member] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Related party transaction, aircraft lease Related Party Transaction, Aircraft Lease Rate Per Hour Related Party Transaction, Aircraft Lease Rate Per Hour Related party transaction, expenses from aircraft lease Related Party Transaction, Expenses from Transactions with Related Party BALANCE SHEET COMPONENTS Supplemental Balance Sheet Disclosures [Text Block] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Business And Basis Of Presentation [Abstract] Disclosure - Business and Basis of Presentation (Additional Information) [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock [Member] Common Stock [Member] Subsidiary, Sale of Stock [Axis] Subsidiary, Sale of Stock [Axis] Sale of Stock, Name of Transaction [Domain] Sale of Stock, Name of Transaction [Domain] IPO [Member] IPO [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Existing stockholders, including the Company's CEO and entities affiliated with Summit Partners, L.P. Existing Stockholders, Including Chief Executive Officer And Affiliated Entities [Member] Existing Stockholders, Including Chief Executive Officer And Affiliated Entities [Member] Options granted to underwriters Underwriters [Member] Underwriters [Member] Class of Stock [Line Items] Class of Stock [Line Items] Year of incorporation Year Of Incorporation Year of incorporation. Year of commencement of business Year Of Commencement Of Business Year of commencement of business. Common stock issued under initial public offering (shares) Stock Issued During Period, Shares, New Issues Common stock issue price under initial public offering (in usd per share) Common Stock Issue Price Under Initial Public Offering Common Stock Issue price under initial public offering. Conversion of preferred stock into common stock ratio Conversion Of Preferred Stock Into Common Stock Ratio Conversion of preferred stock into common stock Ratio. Number of shares offered Sale Of Company Stock By Existing Stockholders, Number Of Shares Issued In Transaction The number of shares of company stock issued or sold by an existing stockholder per stock transaction. Price (in usd per share) Sale Of Company Stock By Existing Stockholders, Price Per Share Sale Of Company Stock By Existing Stockholders, Price Per Share Number of shares sold in connection with the partial exercise of the option to purchase additional shares Sale Of Company Stock By Existing Stockholders, Option To Purchase Additional Shares, Exercises In Period Shares Of Company Stock By Existing Stockholders, Option To Purchase Additional Shares, Exercises In Period Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Property Subject to or Available for Operating Lease, by Major Property Class [Table] Property Subject to or Available for Operating Lease, by Major Property Class [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Export Compliance Matters [Member] Export Compliance Matters [Member] Export Compliance Matters [Member] San Jose, CA San Jose California [Member] San Jose California. Property Subject to or Available for Operating Lease [Line Items] Property Subject to or Available for Operating Lease [Line Items] Non-cancelable operating leases expiration period Noncancelable Operating Leases Expiration Period Noncancelable operating leases expiration period. Non-cancelable purchase commitments Purchase Obligation One-time payment to the U.S. Department of the Treasury Litigation Settlement, Amount Loss contingency accrual Loss Contingency Accrual Loss contingency accrual, increase (decrease) Loss Contingency Accrual, Period Increase (Decrease) Shareholder class action complaints filed against Company Loss Contingency, New Claims Filed, Number Income Statement [Abstract] Revenues Cost of revenues Cost of Revenue Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense Sales, general and administrative Selling, General and Administrative Expense Total operating expenses Operating Expenses Income from operations Operating Income (Loss) Interest expense and other, net Interest Income (Expense), Net Income before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Provision for income taxes Income Tax Expense (Benefit) Net income and comprehensive income Net income per share of common stock: Basic (in usd per share) Earnings Per Share, Basic Diluted (in usd per share) Earnings Per Share, Diluted Weighted average shares used in computing net income per share of common stock: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted COMMON STOCK AND TREASURY STOCK Common Stock And Treasury Stock Disclose [Text Block] Common Stock And Treasury Stock Disclose [Text Block] SEGMENT INFORMATION, REVENUES BY GEOGRAPHY AND SIGNIFICANT CUSTOMERS Segment Reporting Disclosure [Text Block] Number of primary categories Number of Operating Segments Percentage of accounts receivable by major customer Percentage of revenues by major customer RELATED PARTY TRANSACTIONS AND CERTAIN OTHER TRANSACTIONS Related Party Transactions Disclosure [Text Block] Unrecognized tax benefits Unrecognized Tax Benefits Increase in unrecognized tax benefits Unrecognized Tax Benefits, Period Increase (Decrease) Total number of shares purchased Average price paid per share (in usd per share) Treasury Stock Acquired, Average Cost Per Share Estimated remaining balance available for share repurchase Stock Repurchase Program, Remaining Authorized Repurchase Amount Common Stock, Dividends, Per Share, Declared Dividends, Common Stock, Cash Advertising costs Advertising Expense Fair value hierarchy for company's financial assets and liabilities Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Stock options Employee Stock Option [Member] Restricted stock units Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted-average shares used in computing basic net income per share Stock options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted-average shares used in computing diluted net income per share Net income per share of common stock: Net Income Loss Per Share Of Common Stock [Abstract] Net income loss per share of common stock. Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Simplified Method Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value 2014 (remainder) Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2015 Operating Leases, Future Minimum Payments, Due in Two Years 2016 Operating Leases, Future Minimum Payments, Due in Three Years 2017 Operating Leases, Future Minimum Payments, Due in Four Years 2018 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Liabilities: Liabilities, Fair Value Disclosure [Abstract] Debt Debt Instrument, Fair Value Disclosure Future minimum annual payments under operating leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] BUSINESS AND BASIS OF PRESENTATION Business Description and Basis of Presentation [Text Block] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Testing equipment Testing Equipment [Member] Testing Equipment [Member] Computer and other equipment Computer And Other Equipment [Member] Computer And Other Equipment [Member] Tooling equipment Tooling Equipment [Member] Tooling Equipment [Member] Furniture and fixtures Furniture and Fixtures [Member] Leasehold improvements Leasehold Improvements [Member] Software Computer Software, Intangible Asset [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property and equipment gross Property, Plant and Equipment, Gross Less: Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Potential shares of common stock excluded from the EPS calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Warranty period Standard Product Warranty Period Standard product warranty period. North America North America [Member] South America South America [Member] Europe, the Middle East and Africa Europe Middle East And Africa [Member] Europe, the Middle East and Africa. Asia Pacific Asia Pacific [Member] Revenues by geography percentage Revenues By Geographical Area Percentage Revenues by geographical area percentage. Authorized shares, stock incentive plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Aggregate intrinsic value of options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Unrecognized compensation costs Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options Weighted-average period recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Intrinsic value of RSUs vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Option Vested In Period Intrinsic Value Share based compensation arrangement by share based payment award equity instruments other than option vested in period intrinsic value. Stock-based compensation expense Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Summary of option activity for the company's stock incentive plans Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Fair value of employee stock options Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Activity of RSUs Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] SUBSEQUENT EVENTS Subsequent Events [Text Block]