Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Title of Individual [Axis] Title of Individual [Axis] Title of Individual with Relationship to Entity [Domain] Title of Individual with Relationship to Entity [Domain] Director Director [Member] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock Restricted Stock [Member] Restricted Stock Units (RSUs) 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] Vesting percentage on first anniversary date of the grant (percent) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vesting Percentage, One Year from Grant Date Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Vesting Percentage, One Year from Grant Date Vesting percentage on second anniversary date of the grant (percent) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Percent Vested On Second Anniversary Date Of The Grant Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Award Vesting Percentage, Two Years from Grant Date Vesting percentage on third anniversary date of the grant (percent) Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Vesting Percentage, Three Years From Grant Date Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Vesting Percentage, Three Years From Grant Date Weighted-average grant-date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Balance Sheet Components [Abstract] Balance Sheet Components [Abstract] Balance sheet components Supplemental Balance Sheet Disclosures [Text Block] Leases [Abstract] Net Investment in Sales-Type Leases Capital Leases in Financial Statements of Lessor Disclosure [Text Block] Inventories Schedule of Inventory, Current [Table Text Block] Property and equipment Property, Plant and Equipment [Table Text Block] Accrued payroll and other accruals Schedule of Accrued Liabilities [Table Text Block] Income Tax Disclosure [Abstract] Net operating loss carryforward Deferred Tax Assets, Operating Loss Carryforwards Research and development credits Deferred Tax Assets, Tax Credit Carryforwards, Research Depreciation and Amortization Tax Basis of Investments, Gross, Unrealized Depreciation Reserves and accruals Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves Total deferred tax assets Deferred Tax Assets, Gross Valuation allowance Deferred Tax Assets, Valuation Allowance Net deferred tax assets Deferred Tax Assets, Net Deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax liabilities Deferred Tax Liabilities, Net Statement of Financial Position [Abstract] Statement [Table] Statement [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Convertible preferred stock Convertible Preferred Stock [Member] Preferred stock Preferred Stock [Member] Statement [Line Items] Statement [Line Items] Net allowance for doubtful accounts Allowance for Doubtful Accounts Receivable, Current Preferred stock par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Authorized (in shares) Preferred Stock, Shares Authorized Issued (in shares) Preferred Stock, Shares Issued Outstanding (in shares) Preferred Stock, Shares Outstanding Total liquidation preference Preferred Stock, Liquidation Preference, Value Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock authorized shares Common Stock, Shares Authorized Common stock issued shares Common Stock, Shares, Issued Common stock outstanding shares Common Stock, Shares, Outstanding Par value of authorized common stock (in dollars per share) Accounting Policies [Abstract] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Asset Class [Axis] Asset Class [Axis] Fair Value by Asset Class [Domain] Fair Value by Asset Class [Domain] Money market funds Cash And Money Market Funds [Member] Cash And Money Market Funds [Member] Certificates of deposits Certificates of Deposit [Member] Commercial paper Commercial Paper [Member] U.S. government and agency securities US Government Agencies Debt Securities [Member] Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Convertible preferred stock warrants Convertible Preferred Stock Warrant [Member] Convertible Preferred Stock Warrant [Member] Measurement Frequency [Axis] Measurement Frequency [Axis] Fair Value, Measurement Frequency [Domain] Fair Value, Measurement Frequency [Domain] Recurring Fair Value, Measurements, Recurring [Member] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value, Measurements, Fair Value Hierarchy [Domain] Fair Value, Measurements, 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] Total Estimate of Fair Value, Fair Value Disclosure [Member] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Long-term Debt, Fair Value Long-term Debt, Fair Value Cash and cash equivalents, fair value Cash and Cash Equivalents, Fair Value Disclosure Available-for-sale securities, fair value Available-for-sale Securities, Fair Value Disclosure Assets, fair value Assets, Fair Value Disclosure Convertible preferred stock warrants liability, fair value Convertible Preferred Stock Warrants Liability, Fair Value Disclosure Convertible Preferred Stock Warrants Liability, Fair Value Disclosure Liabilities, fair value Liabilities, Fair Value Disclosure Goodwill and Intangible Assets Disclosure [Abstract] Goodwill Goodwill Reverse stock split [Abstract] Reverse stock split [Abstract] Reverse stock split Stockholders' Equity Note Disclosure [Text Block] Share-based Goods and Nonemployee Services Transaction [Abstract] Schedule of Share-based Goods and Nonemployee Services Transaction [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Share-based Goods and Nonemployee Services Transaction [Line Items] Risk-free interest rate Share-based Goods and Nonemployee Services Transaction, Valuation Method, Risk Free Interest Rate Expected life Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Term Expected volatility Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Volatility Rate Dividend yield Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Dividend Rate Cash and Cash Equivalents [Abstract] Cash, Cash Equivalents and Short-Term Investments Cash, Cash Equivalents, and Short-term Investments [Text Block] Debt Disclosure [Abstract] Convertible preferred stock [Abstract] Convertible preferred stock [Abstract] Schedule of Stock by Class Schedule of Stock by Class [Table Text Block] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Series A convertible preferred stock Series A Preferred Stock [Member] Series B convertible preferred stock Series B Preferred Stock [Member] Series C convertible preferred stock Series C Preferred Stock [Member] Series D convertible preferred stock Series D Preferred Stock [Member] Series E convertible preferred stock Series E Preferred Stock [Member] Series F convertible preferred stock Series F Preferred Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Number of convertible preferred securities Number of convertible preferred securities Number of convertible preferred securities Proceeds net of issuance costs Proceeds from Issuance of Convertible Preferred Stock, Net Of Issuance Costs Proceeds from Issuance of Convertible Preferred Stock, Net Of Issuance Costs Liquidation preference Product Warranties Disclosures [Abstract] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward] Product warranty accrual, at the beginning of the period Product Warranty Accrual, Current Warranty expenses accrued Product Warranty Accrual, Warranties Issued Warranty settlements made Product Warranty Accrual, Payments Product warranty accrual, at the end of period Product Warranty [Table] Product Warranty [Table] Product Warranty [Table] Product Warranty [Line Items] Product Warranty [Line Items] Product Warranty [Line Items] Product liability, warranty period Product Liability, Warranty Period Product Liability, Warranty Period Tax Credit Carryforward [Table] Tax Credit Carryforward [Table] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Federal net operating loss carryforwards [Member] Federal net operating loss carryforwards [Member] Federal net operating loss carryforwards [Member] State net operating loss carryforwards [Member] [Member] State net operating loss carryforwards [Member] [Member] State net operating loss carryforwards [Member] Federal research and development tax credits carryforwards [Member] Federal research and development tax credits carryforwards [Member] Federal research and development tax credits carryforwards [Member] State research and development tax credits carryforwards [Member] State research and development tax credits carryforwards [Member] State research and development tax credits carryforwards [Member] Net operating losses subject to varying limitations caused by ownership change [Member] Net operating losses subject to varying limitations caused by ownership change [Member] Net operating losses subject to varying limitations caused by ownership change [Member] Research credit carryforwards subject to varying limitations caused by ownership change [Member] Research credit carryforwards subject to varying limitations caused by ownership change [Member] Research credit carryforwards subject to varying limitations caused by ownership change [Member] Net operating losses expire before utilization caused by ownership change [Member] Net operating losses carryforwards expire before utilization [Member] Net operating losses carryforwards expire before utilization [Member] Research credit carryforwards expire before utilization caused by ownership change [Member] Research credit carryforwards expire before utilization [Member] Research credit carryforwards expire before utilization [Member] Tax Credit Carryforward [Line Items] Tax Credit Carryforward [Line Items] Valuation Allowance, Deferred Tax Asset, Change in Amount Valuation Allowance, Deferred Tax Asset, Change in Amount Tax Credit Carryforward, Amount Tax Credit Carryforward, Amount Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Previous Term Loan [Member] Previous Term Loan [Member] Previous Tem Loan [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term loan Notes Payable to Banks [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum borrowing capacity Debt Instrument, Maximum Borrowing Capacity Debt Instrument, Maximum Borrowing Capacity Long-term Debt Long-term Debt Proceeds from borrowings used to pay off a previous term loan Debt Instrument, Proceeds From Borrowings Used To Pay Off A Previous Term Loan Debt Instrument, Proceeds From Borrowings Used To Pay Off A Previous Term Loan Number of interest only payments Debt Instruments, Number Of Interest Only Payments Debt Instruments, Number Of Interest Only Payments Number of equal monthly instruments of principal plus interest Debt Instrument, Number Of Equal Monthly Installments Of Principal Plus Interest Debt Instrument, Number Of Equal Monthly Installments Of Principal Plus Interest Variable rate basis Debt Instrument, Description of Variable Rate Basis Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Loan covenants, minimum quick ratio Debt Instrument, Loan Covenants, Minimum Quick Ratio Debt Instrument, Loan Covenants, Minimum Quick Ratio Commitments and Contingencies Disclosure [Abstract] Rent expense Operating Leases, Rent Expense Minimum shareholder approval Minimum Shareholder Approval, Percenatge Minimum shareholder approval, Percentage Segment Reporting [Abstract] Segments Segment Reporting Disclosure [Text Block] Earnings Per Share [Abstract] 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] Stock options Stock Options [Member] Stock warrants Warrant [Member] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Preferred Stock, Dividend Rate, Percentage Preferred Stock, Dividend Rate, Percentage Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income (loss) (in dollars) Net Income (Loss) Attributable to Parent Less: undistributed earnings allocated to preferred stockholders (in dollars) Undistributed Earnings Allocated to Participating Securities Net income (loss) attributable to common stockholders (in dollars) Net Income (Loss) Available to Common Stockholders, Basic Denominator: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Weighted average shares used to compute basic net income (loss) per common share Weighted Average Number of Shares Outstanding, Basic Effect of potentially dilutive securities Incremental Common Shares Attributable to Call Options and Warrants Weighted average shares used to compute diluted income (loss) per common share Weighted Average Number of Shares Outstanding, Diluted Net income (loss) per share Earnings Per Share, Basic and Diluted [Abstract] Basic and diluted net income (loss) per common share (in dollars per share) Earnings Per Share, Basic and Diluted Class of Warrant or Right [Table] Class of Warrant or Right [Table] Convertible preferred stock Convertible preferred stock [Line Items] [Line Items] Convertible preferred stock [Line Items] [Line Items] Noncumulative dividend rate per annum Issuance price per share (in dollars per share) Preferred Stock, Issuance Price Per Share Preferred Stock, Issuance Price Per Share Schedule of Reserved Shares for Issuance Schedule of Common Stock Reserved for Future Issuance [Table Text Block] Schedule of Common Stock Reserved for Future Issuance [Table Text Block] Schedule of Stock Option Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Disclosure of Additional Information for Stock Options Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Schedule of Restricted Stock Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Valuation Assumptions for Stock Options Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Share-based Goods and Nonemployee Services Transaction by Supplier [Table Text Block] Schedule of Share-based Goods and Nonemployee Services Transaction by Supplier [Table Text Block] Subsequent Events [Abstract] Subsequent events Subsequent Events [Text Block] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Supplier [Axis] Supplier [Axis] Share-based Goods and Nonemployee Services Transaction, Supplier [Domain] Share-based Goods and Nonemployee Services Transaction, Supplier [Domain] Nonemployees Nonemployees [Member] Nonemployees Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Allocated Share-based Compensation Expense Allocated Share-based Compensation Expense Conversion ratio preferred stock to common stock Convertible Preferred Stock, Shares Issued upon Conversion Firm commitment underwritten public offering per share price (in dollars per share) Convertible Preferred Stock, Conversion Terms on IPO, Minimum Price Per Share Convertible Preferred Stock, Conversion Terms on IPO, Minimum Price Per Share Net proceeds from conversion Convertible Preferred Stock, Conversion Terms on IPO, Minimum Net Proceeds Convertible Preferred Stock, Conversion Terms on IPO, Minimum Net Proceeds Undesignated preferred stock, authorized Undesignated preferred stock, par value Summary of significant accounting policies Significant Accounting Policies [Text Block] Unvested shares subject to repurchase rights at original issuance price (in shares) Early Exercised Number of Shares Outstanding, Unvested and Subject to Repurchase Rights at Original Issuance Price Early Exercised Number of Shares Outstanding, Unvested and Subject to Repurchase Rights at Original Issuance Price Exercise of unvested stock options included in accrued liabilities Accrued Liabilities, Early Exercise of Stock Options, Current Accrued Liabilities, Early Exercise of Stock Options,Current Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] ExperiaHealth, Inc. ExperiaHealth, Inc. [Member] ExperiaHealth, Inc. [Member] Share-based Goods and Nonemployee Services Transaction, Securities Issued Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued Components of income (loss) before income tax Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Components of the provision (benefit) for income taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Reconciliation of the provision for income taxes at the statutory rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Changes in the unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Integrated Voice Solutions, Inc. Integrated Voice Solutions, Inc. [Member] Integrated Voice Solutions, Inc. [Member] OptiVox OptiVox [Member] OptiVox [Member] Wallace Wireless, Inc. Wallace Wireless, Inc. [Member] Wallace Wireless, Inc. [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Purchase price allocation Schedule of Purchase Price Allocation [Table Text Block] Supplemental pro forma financial information Business Acquisition, Pro Forma Information [Table Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility [Member] Revolving Credit Facility [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Revolving line of credit, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Borrowing base, percent of eligible accounts receivable Debt Instrument, Borrowing Base, Percent Of Eligible Accounts Receivable Debt Instrument, Borrowing Base, Percent Of Eligible Accounts Receivable Outstanding borrowings Line of Credit Facility, Amount Outstanding Repayments of debt Line of Credit Facility, Decrease, Repayments Increase in additional borrowings Line of Credit Facility, Increase, Additional Borrowings Schedule of components of the net investment in sales-type leases Schedule of Components in Sales-type Leases, Net [Table Text Block] Schedule of Components in Sales-type Leases, Net [Table Text Block] Schedule of minimum lease payments under sales-type leases Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Basic and diluted net income (loss) per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Securities not included in diluted shares outstanding Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Schedule of Property, Plant and Equipment [Table] Schedule of Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property and Equipment [Domain] Property, Plant and Equipment, Type [Domain] Computer equipment and software Computer Equipment And Software [Member] Computer Equipment And Software [Member] Furniture fixtures and equipment Furniture Fixtures And Equipment [Member] Furniture Fixtures And Equipment [Member] Leasehold improvements Leasehold Improvements [Member] Manufacturing tools and equipment Other Machinery and Equipment [Member] Construction in process Construction in Progress [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 Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Property and equipment, net Property, Plant and Equipment, Net Depreciation and amortization expense Depreciation, Depletion and Amortization Inventory, Net [Abstract] Inventory, Net [Abstract] Raw materials Inventory, Raw Materials, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Inventory, Net Common stock Common Stock [Member] 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 Trademarks [Member] Customer relationships Customer Relationships [Member] Developed technology Developed Technology Rights [Member] Business acquisition, cost of acquired entity, cash paid Business Acquisition, Cost of Acquired Entity, Cash Paid Class of Warrant or Right, Number of Securities Called by Warrants or Rights Class of Warrant or Right, Number of Securities Called by Warrants or Rights Exercise price of the warrant (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Warrants and Rights Outstanding Warrants and Rights Outstanding Expected volatility Fair Value Assumptions, Expected Volatility Rate Business acquisition, contingent consideration, shares issuable Business Acquisition, Contingent Consideration, Shares Issuable Business acquisition, contingent consideration, shares issuable, exercise price (per share) Business Acquisition, Contingent Consideration, Shares Issuable, Exercise Price, Per Share Business Acquisition, Contingent Consideration, Shares Issuable, Exercise Price, Per Share Business acquisition, contingent consideration, at fair value Business Acquisition, Contingent Consideration, at Fair Value Fair value assumptions, weighted average volatility rate Fair Value Assumptions, Weighted Average Volatility Rate Fair value assumptions, expected term Fair Value Assumptions, Expected Term Risk-free interest rate Fair Value Assumptions, Risk Free Interest Rate Purchase Price Allocation [Abstract] Business Acquisition, Purchase Price Allocation [Abstract] Fixed assets Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment Intangible assets Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets Goodwill Business Acquisition, Purchase Price Allocation, Goodwill Amount Net assets acquired Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net Fair Value Assumptions, Exercise Price Fair Value Assumptions, Exercise Price Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Cash and cash equivalents Cash and Cash Equivalents [Member] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Commercial paper Commercial Paper, Not Included with Cash and Cash Equivalents [Member] Certificates of deposit Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Cash and cash equivalents Cash and Cash Equivalents 1 [Abstract] Cash and Cash Equivalents 1 [Abstract] Amortized Cost Cash and Cash Equivalents, Amortized Cost Cash and Cash Equivalents, Amortized Cost Unrealized Gains Cash And Cash Equivalents, Gross Unrealized Gains Cash And Cash Equivalents, Gross Unrealized Gains Unrealized Losses Cash And Cash Equivalents, Gross Unrealized Losses Cash And Cash Equivalents, Gross Unrealized Losses Fair Value Short-Term Investments Short-term Investments [Abstract] Amortized Cost Available-for-sale Securities, Amortized Cost Basis Unrealized Gains Available-for-sale Securities, Gross Unrealized Gains Unrealized Losses Available-for-sale Securities, Gross Unrealized Losses Fair Value Cash, cash equivalents, and short-term investments Cash, Cash Equivalents, and Short-term Investments [Abstract] Amortized Cost Cash, Cash Equivalents And Short Term Investments, Amortized Cost Cash, Cash Equivalents And Short Term Investments, Amortized Cost Unrealized Gains Cash, Cash Equivalents And Short Term Investments, Gross Unrealized Gains Cash, Cash Equivalents And Short Term Investments, Gross Unrealized Gains Unrealized Losses Cash, Cash Equivalents And Short Term Investments, Gross Unrealized Losses Cash, Cash Equivalents And Short Term Investments, Gross Unrealized Losses Fair Value Cash, Cash Equivalents And Short Term Investments, Fair Value Disclosure Cash, Cash Equivalents And Short Term Investments, Fair Value Disclosure Summary of significant accounting policies [Abstract] Summary of significant accounting policies [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] 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] Share Price Share Price Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2012 Plan Two Thousand Twelve Stock Option Plan [Member] 2012 Stock Option Plan [Member] Number of equity incentive plans Share-based Compensation Arrangements by Share-based Payment Award, Number Of Equity Incentive Plans Share-based Compensation Arrangements by Share-based Payment Award, Number Of Equity Incentive Plans Vesting period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award vesting percentage at end of one year (percent) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Percentage Expiration period of granted options (in years) Share-based Compensation Arrangement By Share-based Payment Award, Expiration Period of Granted Options Share-based Compensation Arrangement By Share-based Payment Award, Expiration Period of Granted Options Reserved Under Stock Option Plans Employee Stock Option [Member] Exercise of Warrants to Purchase Common Stock Common stock (in shares) Common Stock, Capital Shares Reserved for Future Issuance Non-cancelable purchase commitment with a third party manufacturer to purchase inventory Unrecorded Unconditional Purchase Obligation Warrants [Line Items] Class of Warrant or Right [Line Items] Voting power preferred stock after liquidation Preference Stock Liquidation, Minimum Voting Power of Common and Preferred Stockholders Trigger, Percentage Preference Stock Liquidation, Minimum Voting Power of Common and Preferred Stockholders Trigger, Percentage Liquidation preference per share (in dollars per share) Preferred Stock, Liquidation Preference Per Share Conversion preferrred stock in common stock during liquidation (in dollars per share) Preferred Stock, Redemption Price Per Share Grant-date fair value of options vested during period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value Intrinsic value of options exercised during period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value United States Income (Loss) from Continuing Operations before Income Taxes, Domestic International Income (Loss) from Continuing Operations before Income Taxes, Foreign Total income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Non-compete agreements Noncompete Agreements [Member] In-process R&D In-process Research and Development [Member] In-process Research and Development [Member] Acquisition Details [Abstract] Acquisition Details [Abstract] Acquisition Details [Abstract] Business acquisition, percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Number of options granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Business acquisition, contingent consideration, shares issuable, exercise price (per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Business acquisition, contingent consideration, term Business Acquisition, Contingent Consideration, Expiration Term Business Acquisition, Contingent Consideration, Term Share-based Compensation Arrangement by Share-based Payment Award, Option, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Option, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Option, Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Vesting period Cash Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents Accounts receivable Business Acquisition, Purchase Price Allocation, Current Assets, Receivables Other current assets Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets Other receivables Business Acquisition, Purchase Price Allocation, Other Receivables Business Acquisition, Purchase Price Allocation, Other Receivables Property and equipment Total assets acquired Business Acquisition, Purchase Price Allocation, Assets Acquired Liabilities assumed Business Acquisition, Purchase Price Allocation, Liabilities Assumed Schedule of Short-term Debt [Table] Schedule of Short-term Debt [Table] Operating Loan Agreement [Member] Operating Loan Agreement [Member] Operating Loan Agreement [Member] Short-term Debt [Line Items] Short-term Debt [Line Items] Borrowing base, percent of eligible canadian accounts receivable Debt Instrument, Borrowing Base, Percent Of Eligible Canadian Accounts Receivable Debt Instrument, Borrowing Base, Percent Of Eligible Canadian Accounts Receivable Borrowing base, percent of eligible us accounts receivable Debt Instrument, Borrowing Base, Percent Of Eligible US Accounts Receivable Debt Instrument, Borrowing Base, Percent Of Eligible US Accounts Receivable 2012 (remaining six months) Capital Leases, Future Minimum Payments Receivable, Remainder of Fiscal Year 2013 Capital Leases, Future Minimum Payments, Receivable in Two Years 2014 Capital Leases, Future Minimum Payments, Receivable in Three Years 2015 Capital Leases, Future Minimum Payments, Receivable in Four Years 2016 and thereafter Capital Leases, Future Minimum Payments, Receivable in Five Years Total Capital Leases, Future Minimum Payments Receivable Summary of Operating Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Summary of Revenue by Product Line Revenue from External Customers by Products and Services [Table Text Block] Schedule of Revenue by Geographic Region Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Unrecognized net compensation cost related to options Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options Weighted average period (in years) Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition Expected dividend yield Fair Value Assumptions, Expected Dividend Rate Borrowings Debt Disclosure [Text Block] Common Stock Shareholders' Equity and Share-based Payments [Text Block] Restricted cash Restricted Cash and Cash Equivalents, Current Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Commitments Commitments and Contingencies Disclosure [Text Block] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Sales-type leases term Capital Leases, Term Capital Leases, Term Net minimum lease payments to be received Capital Leases, Net Investment in Sales Type Leases, Minimum Payments to be Received Less unearned interest income portion Capital Leases, Net Investment in Sales Type Leases, Deferred Income Net investment in sales-type leases Capital Leases, Net Investment in Sales Type Leases Less current portion Capital Leases, Net Investment In Sales-type Leases, Current Capital Leases, Net Investment In Sales-type Leases, Current Non-current net investment in sales-type leases Capital Leases, Net Investment In Sales-type Leases, Noncurrent Capital Leases, Net Investment In Sales-type Leases, Noncurrent Statement of Other Comprehensive Income [Abstract] Net income (loss) Other comprehensive loss, net: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Change in unrealized loss on investments, net Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Acquired intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Estimated future amortization of acquired intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] 2012 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year 2013 Operating Leases, Future Minimum Payments, Due in Two Years 2014 Operating Leases, Future Minimum Payments, Due in Three Years 2015 Operating Leases, Future Minimum Payments, Due in Four Years 2016 and beyond Operating Leases, Future Minimum Payments, Due in Five Years and Thereafter Operating Leases, Future Minimum Payments, Due in Five Years and Thereafter Total minimum lease payments Operating Leases, Future Minimum Payments Due Effective tax rate Effective Income Tax Rate, Continuing Operations U.S. federal taxes (benefit) at statutory rate Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate State income taxes, net of federal benefit Income Tax Reconciliation, State and Local Income Taxes Foreign income taxes at rates other than the US rate Income Tax Reconciliation, Foreign Income Tax Rate Differential Stock-based compensation Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Change in valuation allowance Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance Non-deductible warrants expense Income Tax Rate Reconciliation Nondeductible Expense, Warrants Income Tax Rate Reconciliation Nondeductible Expense, Warrants Non-deductible acquisition costs Income Tax Rate Reconciliation Nondeductible Expense, Acquisition Costs Income Tax Rate Reconciliation Nondeductible Expense, Acquisition Costs Research and development credits Income Tax Reconciliation, Tax Credits, Research Other Income Tax Reconciliation, Nondeductible Expense, Other Total Income Tax Expense (Benefit) Income Tax Expense (Benefit) Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Short-term Investments Short-term Investments Accounts receivable (net of allowance for doubtful accounts of $10, $0 and $0, respectively) Accounts Receivable, Net, Current Other receivables Other Receivables Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Other long-term assets Other Assets, Noncurrent Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Total assets Assets Liabilities, convertible preferred stock and stockholders' deficit Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Product warranty Accrued payroll and other accruals Accrued Payroll And Other Accruals Accrued Payroll And Other Accruals Deferred revenue, current Deferred Revenue, Current Borrowings, current Long and Short Term Borrowings, Current Long and Short Term Borrowings, Current Total current liabilities Liabilities, Current Deferred revenue, long-term Deferred Revenue, Noncurrent Borrowings, long-term Long-term Debt, Excluding Current Maturities Other long-term liabilities Other Liabilities, Noncurrent Total liabilities Liabilities Commitments (Note 11) Commitments and Contingencies Stockholders' equity (deficit) Stockholders' Equity Attributable to Parent [Abstract] Preferred stock Preferred Stock, Value, Issued Common stock; $0.0003 par value—30,423,297 authorized shares, 2,777,094 and 3,780,490 issued and outstanding shares at December 31, 2010 and December 31, 2011, respectively; 100,000,000 authorized shares, 22,138,561 issued and outstanding at June 30, 2012 (unaudited) Common Stock, Value, Issued Additional paid-in-capital Additional Paid in Capital Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated deficit Retained Earnings (Accumulated Deficit) Total stockholders’ equity (deficit) Stockholders' Equity Attributable to Parent Total liabilities, convertible preferred stock and stockholders’ equity (deficit) Liabilities and Equity Income (loss) per share Earnings Per Share [Text Block] 2012 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2013 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2014 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2015 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2016 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Revenue Revenues [Abstract] Product Sales Revenue, Goods, Net Service Sales Revenue, Services, Net Total revenue Revenue, Net Gross Profit Gross Profit [Abstract] Product Gross Profit, Goods Gross Profit, Goods Service Gross Profit, Services Gross Profit, Services Total gross profit Gross Profit Research and development Research and Development Expense Sales and marketing Selling and Marketing Expense General and administrative General and Administrative Expense Income (loss) from operations Operating Income (Loss) Interest income Investment Income, Interest Interest expense Interest Expense Other income (expense), net Other Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Income taxes Income Tax Disclosure [Text Block] Geographic Areas, Revenues from External Customers [Abstract] Geographic Areas, Revenues from External Customers [Abstract] United States Disclosure on Geographic Areas, Revenue from External Customers Attributed to Entity's Country of Domicile International Disclosure on Geographic Areas, Revenue from External Customers Attributed to Foreign Countries Geographic Areas, Long-Lived Assets [Abstract] Geographic Areas, Long-Lived Assets [Abstract] Long-lived assets Long-lived assets located in the United States Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile Notes Payable to Banks [Member] Debt instrument, face value Debt Instrument, Face Amount Early repayment of debt Early Repayment of Senior Debt Number of debt instruments Debt Instruments, Number Of Debt Instruments Debt Instruments, Number Of Debt Instruments Statement of Stockholders' Equity [Abstract] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss) [Member] Accumulated deficit Retained Earnings [Member] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (shares) Shares, Outstanding Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Exercise of preferred stock warrant (Shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Exercise of preferred stock warrant Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments Conversion of preferred stock into common stock (shares) Conversion of Stock, Shares Converted Conversion of preferred stock into common stock Conversion of Stock, Amount Converted Issuance of common stock upon initial public offering, shares Stock Issued During Period, Shares, New Issues Issuance of common stock upon initial public offering Stock Issued During Period, Value, New Issues Reclassification of preferred stock warrant liability into additional paid-in capital upon initial public offering Adjustments to Additional Paid in Capital, Reclassification of Preferred Stock Warrant Liability Adjustments to Additional Paid in Capital, Reclassification of Preferred Stock Warrant Liability Exercise of stock options (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Repurchase of unvested common stock Stock Repurchased During Period, Unvested, Value Stock Repurchased During Period, Unvested, Value Vesting of early exercised stock options Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition Cashless exercise of common stock warrants Stock Issued During Period, Shares, Exercise of Stock Warrants Stock Issued During Period, Shares, Exercise of Stock Warrants Issuance of restricted stock awards Restricted Stock, Shares Issued Net of Shares for Tax Withholdings Non-employee stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Non-employee Stock-based Compensation Expense Adjustments to Additional Paid in Capital, Share-based Compensation, Non-employee stock-based compensation expense Employee stock-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock options issued with acquisition Adjustments to Additional Paid in Capital, Warrant Issued ExperiaHealth performance awards Adjustments to Additional Paid in Capital, Share-based Compensation, Performance Awards Adjustments to Additional Paid in Capital, Share-based Compensation, Performance Awards Repurchase of early exercised options (shares) Stock Repurchased During Period, Shares Repurchase of early exercised options Stock Repurchased During Period, Value Common stock issued in conjunction with business acquisitions Stock Issued During Period, Value, Acquisitions Common stock issued (shares) in conjunction with business acquisitions Stock Issued During Period, Shares, Acquisitions Net income (loss) Change in unrealized loss on available-for-sale securities Comprehensive income Balance (shares) Balance Convertible preferred stock and preferred stock Preferred Stock [Text Block] Revenue Business Acquisition, Pro Forma Revenue Net loss Business Acquisition, Pro Forma Net Income (Loss) Net loss per share, basic and diluted (in dollars per share) Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted Revenues, since the date of acquisition Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net loss, since the date of acquisition Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Weighted average useful life (years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Gross carrying amount Finite-Lived Intangible Assets, Gross Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Net carrying amount Amortization of purchased assets Amortization of Intangible Assets Contingent Consideration Milestones [Axis] Contingent Consideration Milestones [Axis] Contingent Consideration Milestones [Axis] Contingent Consideration Milestones [Domain] Contingent Consideration Milestones [Domain] Contingent Consideration Milestones [Domain] Contingent Consideration, Revenue Milestone One [Member] Contingent Consideration, Revenue Milestone One [Member] Contingent Consideration, Revenue Milestone One [Member] Contingent Consideration, Revenue Milestone Two [Member] Contingent Consideration, Revenue Milestone Two [Member] Contingent Consideration, Revenue Milestone Two [Member] ExperiaHealth, Inc. [Member] Contingent Consideration by Type [Axis] Contingent Consideration by Type [Axis] Contingent Consideration Type [Domain] Contingent Consideration Type [Domain] Stock options Stock Option [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Other nonoperating income (expense) Other Nonoperating Income (Expense) [Member] Other Nonoperating Income (Expense) [Member] Business acquisition, stock options vested in period, shares Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Change in the fair value of outstanding options Business Combination Contingent Consideration Arrangements, Change in Fair Value of Contingent Consideration, Other Income Expense, Net Business Combination Contingent Consideration Arrangements, Change in Fair Value of Contingent Consideration, Other Income Expense, Net Restricted Stock Awards Restricted Stock Units 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] Granted, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Granted, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeitured, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Income Statement [Abstract] Total revenue Cost of revenue Cost of Revenue [Abstract] Product Cost of Goods Sold Service Cost of Services Total cost of revenue Cost of Goods and Services Sold Gross profit Operating expenses Operating Expenses [Abstract] Total operating expenses Operating Expenses Income (loss) from operations Income (loss) before income taxes Benefit from (provision for) income taxes Net income (loss) Net income (loss) per common share Basic and diluted (in dollars per share) Weighted average shares used to compute net income (loss) per common share Weighted average sharesss [Abstract] Weighted average shares used to compute net income (loss ) per common share Basic (in shares) Diluted (in shares) Accrued Liabilities, Current [Abstract] Accrued Liabilities, Current [Abstract] Payroll and related expenses Employee-related Liabilities, Current Uninvoiced purchases Accounts Payable, Other, Current Preferred stock warrant liability Preferred Stock Warrant Liability Preferred Stock Warrant Liability Deferred rent Deferred Rent Credit, Current Exercise of unvested stock options Accrued Liabilities, Cash Received From Early Exercise of Stock Options Accrued Liabilities, Cash Received From Early Exercise of Stock Options ExperiaHealth performance awards Deferred Compensation Liability, Current Customer prepayments Customer Advances, Current Sales and use tax payable Sales and Excise Tax Payable, Current Other Other Accrued Liabilities, Current Total accrued payroll and other accruals Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair value at beginning of period Fair Value, Measurement with Unobservable Inputs Reconciliations, Recurring Basis, Liability Value Change in fair value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Exercise of convertible preferred stock warrants Proceeds from Warrant Exercises Conversion of preferred stock warrants to common stock warrants Fair Value, Conversion Of Preferred Stock Warrants To Common Stock Warrants Fair Value, Conversion Of Preferred Stock Warrants To Common Stock Warrants Fair value at end of period Loan and Security Agreement [Member] Loan and Security Agreement [Member] Loan and Security Agreement [Member] Warrant issued to purchase preferred shares (in shares) Warrant Issued to Purchase Preferred Shares, Number of Warrants Warrant Issued to Purchase Preferred Shares, Number of Warrants Warrant Issued to Purchase Common Shares, Number of Warrants Warrant Issued to Purchase Common Shares, Number of Warrants Warrant Issued to Purchase Common Shares, Number of Warrants Exercise of stock warrants (Shares) Change in fair value of outstanding warrants recorded as (expense) Change in Fair Value Of Warrant Liability Recorded in Other Income (Expense) Change in Fair Value Of Warrant Liability Recorded in Other Income (Expense) Product warranties Product Warranty Disclosure [Text Block] Gross amount of unrecognized tax benefits as of the beginning of the period Unrecognized Tax Benefits Increases related to prior year tax provisions Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions Decreases related to prior year tax provisions Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions Increases related to current year tax provisions Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions Gross amount of unrecognized tax benefits as of the end of the period Reconciliation of the changes in warranty reserve Schedule of Product Warranty Liability [Table Text Block] Basis of presentation Basis of Accounting, Policy [Policy Text Block] Use of estimates Use of Estimates, Policy [Policy Text Block] Principles of consolidation Consolidation, Policy [Policy Text Block] Cash, Cash Equivalents and Short-term Investments Short-term Investments, Policy [Policy Text Block] Short-term Investments, Policy [Policy Text Block] Restricted cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Allowance for doubtful accounts Receivables, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Fair value of financial instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Concentration of credit risk and other risks and uncertainties Concentration Risk, Credit Risk, Policy [Policy Text Block] Property and equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill and intangible assets Goodwill and Intangible Assets, Policy [Policy Text Block] Impairment of long-lived assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Convertible preferred stock warrants Convertiable Preferred Stock Warrants, Policy [Policy Text Block] Convertiable Preferred Stock Warrants, Policy [Policy Text Block] Revenue recognition Revenue Recognition, Policy [Policy Text Block] Shipping and handling costs Shipping and Handling Cost, Policy [Policy Text Block] Research and development expenditures Research and Development Expense, Policy [Policy Text Block] Advertising costs Advertising Costs, Policy [Policy Text Block] Product warranties Standard Product Warranty, Policy [Policy Text Block] Stock-based compensation Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Income taxes Income Tax, Policy [Policy Text Block] Foreign currency translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Segments Segment Reporting, Policy [Policy Text Block] Comprehensive income Comprehensive Income, Policy [Policy Text Block] Recent accounting pronouncement New Accounting Pronouncements, Policy [Policy Text Block] Number of Options Granted Option Exercise Price Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Fair Value of Common Stock per Share Number of operating segments Number of Operating Segments Number of employees granted stock options Number of employees granted stock options Number of employees granted stock options Number of employees with rights to purchase common stock Business Acquisition, Equity Interest Issued or Issuable, Number of Employees with Rights to Purchase Common Stock Business Acquisition, Equity Interest Issued or Issuable, Number of Employees with Rights to Purchase Common Stock Business acquisition, contingent consideration, shares issuable Vesting period from the acquisition date (in months) Organization, Consolidation and Presentation of Financial Statements [Abstract] The company Nature of Operations [Text Block] Goodwill and intangible assets Goodwill and Intangible Assets Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Pro forma stockholders' equity [Member] Pro Forma [Member] Conversion of stock, convertible preferred stock converted Incremental common shares attributable to conversion of preferred stock Conversion of Stock, Shares Issued Current [Abstract] Current Income Tax Expense (Benefit) [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Foreign Current Foreign Tax Expense (Benefit) Current Income Tax Expense (Benefit) Current Income Tax Expense (Benefit) Deferred [Abstract] Deferred Income Tax Expense (Benefit) [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Foreign Deferred Foreign Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Deferred Income Tax Expense (Benefit) Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Grant, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Grant, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Shares Available for Grant, Outstanding [Roll Forward] Shares Available for Grant, Outstanding, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Additional reserve for future issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Added In Period Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Added In Period Shares removed from plan Share-based Compensation Arrangement By Share-based Payment Award, Shares Removed From Plan Share-based Compensation Arrangement By Share-based Payment Award, Shares Removed From Plan Options cancelled and not returned to the reserve for future issuance Share-based Compensation Arrangement By Share-based Payment Award, Shares Cancelled Share-based Compensation Arrangement By Share-based Payment Award, Shares Cancelled Early exercised options repurchased and added back to the pool Share-based Compensation Arrangement By Share-based Payment Award, Early Exercised Options Repurchased, Added Back Share-based Compensation Arrangement By Share-based Payment Award, Early Exercised Options Repurchased, Added Back To The Pool Shares Available for Grant, Outstanding, Ending balance 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 Options, Outstanding, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Options granted Options exercised Options cancelled Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Options expired Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Number of Options, Outstanding, Ending balance 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 [Roll Forward] Weighted Average Exercise Price, Outstanding, Beginning balance Options granted Options exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Options cancelled Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Options expired Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Weighted Average Exercise Price, Outstanding, Ending balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted-Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted-Average Remaining Contractual Term [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted-Average Remaining Contractual Term [Abstract] Weighted Average Remaining Contractual Term, Options Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Abstract] Aggregate Intrinsic Value, Options Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] Options vested and expected to vest (Number of options) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Options vested and expected to vest (Weighted average exercise price) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Options vested and expected to vest (Weighted average remaining contractual term) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Options vested and expected to vest (Aggregate intrinsic value) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Options vested and exercisable (Number of options) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Options vested and exercisable (Weighted average exercise price) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Options vested and exercisable (Weighted average remaining contractual term) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Options vested and exercisable (Aggregate intrinsic value) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, 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[Member] Products, Software [Member] Maintenance and Support Services, Maintenance And Support [Member] Services, Maintenance And Support [Member] Professional Services and Training Services, Professional Services And Training [Member] Services, Professional Services And Training [Member] Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Product revenue Service revenue Convertible preferred stock (on an as if converted basis) Options to purchase common stock Common stock subject to repurchase Common Stock Subject To Repurchase [Member] Common Stock Subject To Repurchase [Member] Restricted stock units Antidilutive securities excluded from computation of earnings per share, amount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Non-cash interest income Other Noncash Income (Expense) Gain on disposal of assets Gain (Loss) on Sale of Property Plant Equipment Bad debt expense Allowance for Doubtful Accounts Receivable, Period Increase (Decrease) Inventory provision Inventory Write-down Stock-based compensation expense Share-based Compensation Non-employee stock-based compensation expense Issuance of Stock and Warrants for Services or Claims Change in fair value of warrant liability Increase (Decrease) In Fair Value Of Warrant Liability Increase (Decrease) In Fair Value Of Warrant Liability Change in fair value of option liability Change In Fair Value Of Option Liability Change In Fair Value Of Option Liability Changes in current assets and liabilities, net of effect of acquisitions Increase (Decrease) in Other Operating Assets and Liabilities, Net [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Other receivables Increase (Decrease) in Other Receivables Inventories Increase (Decrease) in Inventories Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other long term assets Increase (Decrease) in Other Noncurrent Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities Increase (Decrease) in Accrued Liabilities Warranty reserve Increase (Decrease) in Warranty Reserve Increase/decrease in Warranty reserve Other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue 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 Payments to Acquire Property, Plant, and Equipment Proceeds from disposal of fixed assets Proceeds from Sale of Productive Assets Business acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Purchases of short-term investments Payments to Acquire Available-for-sale Securities Changes in restricted cash Increase (Decrease) in Restricted Cash Long-term deposits Payments for (Proceeds from) Other Investing Activities 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] Borrowings Proceeds from Issuance of Long-term Debt Principal payments on long-term borrowings Repayments of Long-term Debt Proceeds from initial public offering, net of offering costs Proceeds from Issuance Initial Public Offering, Net of Offering Costs Proceeds from Issuance Initial Public Offering, Net of Offering Costs Payment for repurchase of common stock Payments for Repurchase of Common Stock Proceeds from exercise of stock options Proceeds from Stock Options Exercised Proceeds from exercise of preferred stock warrants Payments of costs related to initial public offering Payments of Stock Issuance Costs Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) 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 end of period Supplemental Cash Flow Information Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Supplemental disclosure of non-cash investing and financing activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Issuance of stock and stock options in business acquisitions Common stock issued (value) in conjunction with business acquisitions Common stock issued (value) in conjunction with business acquisitions Costs related to the initial public offering in accounts payable and accrued liabilities Initial Public Offering Costs incurred But Not Yet Paid Initial Public Offering Costs incurred But Not Yet Paid Property and equipment in accounts payable and accrued liabilities Capital Expenditures Incurred but Not yet Paid Changes in the allowance for doubtful accounts Allowance for Credit Losses on Financing Receivables [Table Text Block] Fair value hierarchy for the financial liabilities carried at fair value Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block] Fair value of the convertible preferred stock warrant liability Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Acquisitions Business Combination Disclosure [Text Block] Schedule of Cash, Cash Equivalents and Short-term Investments Schedule of Cash, Cash Equivalents and Short-term Investments [Table Text Block] Sale of Stock [Table] Sale of Stock [Table] Sale of Stock [Table] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Sale of Stock [Domain] IPO [Member] IPO [Member] Sale of Stock [Line Items] Sale of Stock [Line Items] Sale of Stock [Line Items] Shares sold at initial public offering by certain stockholders Stock Sold During Period, Stockholders Stock Sold During Period, Stockholders Shares for the underwriters' over-allotment option Stock Sold During Period, Stockholders, Underwriters Over-allotment Option Stock Sold During Period, Stockholders, Underwriters Over-allotment Option Share price Aggregate gross offering proceeds to Company Proceeds from Issuance Initial Public Offering Aggregate gross offering proceeds to seling stockholders Proceeds from Issuance Initial Public Offering, Stockholders Proceeds from Issuance Initial Public Offering, Stockholders Accumulated deficit Proceeds from convertible preferred stock net of issuance costs Proceeds from Issuance of Convertible Preferred Stock Cash equivalents and short-term investments Cash, Cash Equivalents, and Short-term Investments