Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable Current Accounts payable Accounts Receivable Net Current Accounts receivable, net Accrued Interest Rate Of Loan Accrued Interest Rate Of Loan Percentage of accrue interest Accrued Liabilities Current Accrued liabilities Accumulated Other Comprehensive Income Loss Net Of Tax Other comprehensive income Additional Financial Information Disclosure [Text Block] Information about Geographic Areas Additional Paid In Capital Additional paid-in-capital Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Amendment Flag Amendment Flag Amortization Of Debt Discount Premium Amortization of debt discount Amortized Cost and Fair Value Debt Securities [Abstract] Amortized Cost And Fair Value Debt Securities [Abstract] Amortized Cost and Fair Value Debt Securities [Abstract] Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Anti-dilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Asia Pacific [Member] Asia Pacific [Member] Assets Total assets Assets [Abstract] Assets Assets Current Total current assets Assets Current [Abstract] Current assets: Available For Sale Securities Assets at fair value Available For Sale Securities Amortized Cost Amortized cost Available For Sale Securities Debt Maturities After One Through Five Years Fair Value Maturing after one year through three years Available For Sale Securities Debt Maturities Within One Year Fair Value Maturing in one year or less Available For Sale Securities Gross Realized Gains Gross realized gains on sales of available-for-sale securities Available For Sale Securities Gross Realized Losses Realized losses on sales of available-for-sale securities Available For Sale Securities Gross Unrealized Gains Accumulated In Investments Available For Sale Securities Gross Unrealized Gains Accumulated In Investments Gross unrealized gains Amount of accumulated pre-tax unrealized loss before deducting pre-tax unrealized gain on investments in available-for-sale securities impacting investments. Available For Sale Securities Gross Unrealized Loss Accumulated In Investments Gross unrealized losses Basis Of Accounting Policy Policy [Text Block] Basis of Presentation Basis Of Presentation And Significant Accounting Policies [Text Block] Basis of Presentation and Summary of Significant Accounting Policies Business Description And Basis Of Presentation [Text Block] Description of Business Cash And Cash Equivalents At Carrying Value End of period Beginning of period Cash and cash equivalents Cash And Cash Equivalents At Carrying Value [Abstract] Cash and cash equivalents Cash And Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash And Cash Equivalents Period Increase Decrease Net increase (decrease) in cash and cash equivalents Commitments And Contingencies Commitment and contingencies Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Common Stock Shares Outstanding Common stock, shares outstanding Common Stock Value Common stock, $0.0001 par value, 150,000 shares authorized; 18,053 and 14,620 shares issued and outstanding, respectively Comprehensive Income Net Of Tax Comprehensive loss Concentration Risk Disclosure [Text Block] Concentration of Risks Concentration Risk Percentage 1 Concentration risk, percentage Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Convertible Preferred Stock [Member] Convertible preferred stock (as converted) [Member] Convertible Preferred Stock Warrants [Member] Convertible Preferred Stock Warrants [Member] Convertible preferred stock warrants (as converted) [Member] Corporate Debt Securities [Member] Corporate debt securities [Member] Cost Of Revenue Cost of revenue Costs And Expenses Total costs and expenses Costs And Expenses [Abstract] Costs and expenses: Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Current Fiscal Year End Date Current Fiscal Year End Date Deferred Offering Costs Deferred offering costs Deferred Payment Obligation Accrued Interest Rate Deferred Payment Obligation Accrued Interest Rate Percentage of deferred payment Deferred Rent Credit Current Deferred rent, current portion Deferred Rent Credit Noncurrent Deferred rent, net of current portion Deferred Revenue Current Deferred revenue, current portion Deferred Revenue Noncurrent Deferred revenue, net of current portion Depreciation Depletion And Amortization Depreciation and amortization Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share Basic And Diluted Net loss per share - basic and diluted Earnings Per Share Policy [Text Block] Net Loss Per Share Earnings Per Share [Text Block] Net Loss Per Share Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Entity Wide Number Of Major Customer Entity Wide Number Of Major Customer Number of customer that individually represented more than 10% of total revenue Europe And Middle East [Member] Europe And Middle East [Member] Europe & Middle East [Member] Extended Product Warranty Description Extended warranties description Extended Product Warranty Periods Extended Product Warranty Period Extended warranty period 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] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value By Balance Sheet Grouping [Text Block] Company's Available-for-sale Securities by Level within Fair Value Hierarchy Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Fair Value Inputs Level 1 [Member] Level 1 [Member] Fair Value Inputs Level 2 [Member] Level 2 [Member] Fair Value Inputs Level 3 [Member] Level 3 [Member] Fair Value Measurement Policy Policy [Text Block] Fair Value Measurements Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Gain Loss On Disposal Of Property Plant And Equipment And Land Use Rights Gain Loss On Disposal Of Property Plant And Equipment And Land Use Rights Loss on disposal of property and equipment Gain On Sale Of Investments Gain on sale of investments Gross Proceeds From Issuance Of Additional Common Stock Gross Proceeds From Issuance Of Additional Common Stock Underwriters partially exercised an overallotment option, additional gross proceeds Guarantees [Abstract] Guarantees [Abstract] Income Statement [Abstract] Income Statement [Abstract] Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accounts Receivable Accounts receivable Increase Decrease In Accrued Liabilities Accrued liabilities Increase Decrease In Deferred Revenue Deferred revenue Increase Decrease In Inventories Inventory Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities Increase Decrease In Other Operating Assets Other assets Increase Decrease In Prepaid Expense Prepaid expenses and other Increase Decrease In Restricted Cash Decrease in restricted cash Interest Accrued On Long Term Notes Interest Accrued On Long Term Notes Interest accrued on long-term notes Interest Expense Interest expense Interest Payment Period Interest Payment Period Interest payment period Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] Inventory Inventory Finished Goods Finished goods Inventory Net Inventory Inventory, net Inventory Raw Materials Raw materials Inventory Work In Process Work in process Investment Income Amortization Of Premium Net amortization of premium on short-term investments Investment Income Interest Interest income Investments Classified By Contractual Maturity Date Table [Text Block] Fair Values of Available-for-sale Securities by Contractual Maturity Investments Debt And Equity Securities [Abstract] Investments, Debt and Equity Securities [Abstract] Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Short-term Investments Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Member] Investments [Domain] Liabilities Total liabilities Liabilities And Stockholders Equity Total liabilities and stockholders' equity Liabilities And Stockholders Equity [Abstract] Liabilities and Stockholders' Equity Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Line Credit Facility Additional Borrowing Capacity Line Credit Facility Additional Borrowing Capacity Credit facility, additional borrowing capacity Line Of Credit Facility Current Borrowing Capacity Credit facility, minimum amount committed to borrow under term loan agreement capacity Long Term Debt Current Long-term debt, current portion Long Term Debt Noncurrent Long-term debt, net of current portion 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] Marketable Securities [Text Block] Short-term Investments Available-for-sale Securities Maximum [Member] Maximum [Member] Maximum Period Of Deferred Payments Of Interest Maximum Period Of Deferred Payments Of Interest End of deferred payment term Minimum [Member] Minimum [Member] Money Market Funds [Member] Money market fund [Member] Net Cash Provided By Used In Financing Activities [Abstract] Financing activities Net Cash Provided By Used In Financing Activities Continuing Operations Net cash provided by (used in) financing activities Net Cash Provided By Used In Investing Activities [Abstract] Investing activities Net Cash Provided By Used In Investing Activities Continuing Operations Net cash used in investing activities Net Cash Provided By Used In Operating Activities [Abstract] Operating activities Net Cash Provided By Used In Operating Activities Continuing Operations Net cash used in operating activities Net Income Loss Net loss Net loss Net Income Loss Available To Common Stockholders Basic Net loss attributable to common stockholders Net proceeds from public offering after underwriting discounts, commissions and other expenses. Net Proceeds From Public Offering After Underwriting Discounts Commissions And Other Expenses Proceeds from underwritten public offering after fees and commissions New Accounting Pronouncements Policy Policy [Text Block] Recent Accounting Pronouncements Nonoperating Income Expense Total other expense North America [Member] North America [Member] Number Of Major Customer Representing Accounts Receivable Number Of Major Customer Representing Accounts Receivable Number of customer that represented more than 10% of total accounts receivable Number Of Reportable Segments Number of reportable segments Operating Income Loss Loss from operations Term loan borrowings or up to an aggregate amount if it elected to exercise in full an option to pay in kind a portion of the interest, as per loan agreement. Option One [Member] Option 1 [Member] Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other Assets Current Other assets Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Unrealized loss on short-term investments Other Income And Expenses [Abstract] Other income (expense): Other Nonoperating Income Expense Other expense Payment Of Financing And Stock Issuance Costs Deferred offering costs Payments To Acquire Property Plant And Equipment Purchases of property and equipment Payments To Acquire Short Term Investments Purchase of short-term investments Percentage Used To Determine Discount For Standalone Sales Percentage Used To Determine Discount For Standalone Sales Percentage used to determine discount for stand-alone sales Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Value Preferred stock, $0.0001 par value, 15,000 shares authorized; none issued Prepaid Expense And Other Assets Current Prepaid expenses and other Proceeds From Issuance Initial Public Offering Net proceeds from public offering Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options Proceeds from employee stock purchase plan Proceeds From Sale Maturity And Collection Of Shortterm Investments Proceeds from maturity of short-term investments Proceeds From Stock Options Exercised Proceeds from exercise of stock options Product Warranty Accrual Warranty reserve, Ending balance Warranty reserve, Beginning balance Product Warranty Accrual Payments Cost of warranty claims Product Warranty Accrual Period Product Warranty Accrual Period Product warranty accrual period Product Warranty Accrual Warranties Issued Warranty accrual Product Warranty Disclosure [Text Block] Reserve for Product Warranties Property Plant And Equipment Net Property and equipment, net Range [Axis] Range [Axis] Range [Member] Range [Domain] Regulatory Assets [Abstract] Regulatory Assets [Abstract] Regulatory Assets [Abstract] Repayment Of Term Loan Repayment Of Term Loan End of term payment Repayment Of Term Loan Premium Repayment Of Term Loan Premium Amount of make-whole premium payment The total repayments of borrowings under credit facilities. Repayments Of Borrowings Under Credit Facilities Expected total repayment Repayments Of Long Term Debt Repayment of long-term debt Reportable Geographical Components [Member] Reportable geographical components [Member] Research And Development Expense Research and development Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member] Cash and Cash Equivalents [Domain] Restricted Cash And Cash Equivalents Noncurrent Restricted cash Retained Earnings Accumulated Deficit Accumulated deficit Revaluation Of Convertible Preferred Stock Warrant Liability Revaluation Of Convertible Preferred Stock Warrant Liability Revaluation of preferred stock warrant liability Revaluation of preferred stock warrant liability Revenue From External Customers By Geographic Areas Table [Text Block] Classification of Revenue by Geography Revenue Recognition Policy [Text Block] Revenue Recognition Revenues Revenue Total revenue Revenues From External Customers And Long Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Risks And Uncertainties [Abstract] Risks and Uncertainties [Abstract] Scenario Unspecified [Domain] Scenario, Unspecified [Domain]