Entity Central Index Key
Long term debt maturities repayments of interest and principal.
Amount of lessee's undiscounted obligation for lease payments for operating lease, due in sixth fiscal year following latest fiscal year.
Amount of lessee's undiscounted obligation for lease payments for operating lease, due after sixth fiscal year following latest fiscal year.
Document and entity information.
Document And Entity Information [Abstract]
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Document Type
Document Type
Trading Symbol
Trading Symbol
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Ex Transition Period
Entity Ex Transition Period
Entity Common Stock, Shares Outstanding
Entity Common Stock Shares Outstanding
Document Fiscal Period Focus
Document Fiscal Period Focus
Document Fiscal Year Focus
Document Fiscal Year Focus
Statement Of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Current assets:
Assets Current [Abstract]
Cash and cash equivalents
Cash And Cash Equivalents At Carrying Value
Accounts receivable
Accounts Receivable Net Current
Inventory
Inventory Net
Deposits on purchased inventory
Advances On Inventory Purchases
Deferred cost of revenue
Deferred Costs Current
Prepaid expenses and other current assets
Prepaid Expense And Other Assets Current
Total current assets
Assets Current
Property and equipment, net
Property Plant And Equipment Net
Restricted cash
Restricted Cash And Cash Equivalents Noncurrent
Right-of-use assets
Operating Lease Right Of Use Asset
Other assets
Other Assets Noncurrent
TOTAL ASSETS
Assets
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities And Stockholders Equity [Abstract]
Current liabilities:
Liabilities Current [Abstract]
Accounts payable
Accounts Payable Current
Accrued liabilities
Accrued Liabilities Current
Customer deposits
Contract With Customer Refund Liability Current
Operating lease liability, current
Operating Lease Liability Current
Deferred revenue, current
Contract With Customer Liability Current
Total current liabilities
Liabilities Current
Deferred revenue, net of current portion
Contract With Customer Liability Noncurrent
Long-term debt
Long Term Debt Noncurrent
Warrant liabilities
Liabilities Fair Value Disclosure
Operating lease liability, noncurrent
Operating Lease Liability Noncurrent
Other long-term liabilities
Other Liabilities Noncurrent
TOTAL LIABILITIES
Liabilities
Commitments and contingencies (Note 6)
Commitments And Contingencies
Stockholders’ equity:
Stockholders Equity [Abstract]
Convertible preferred stock, par value of $0.01 per share; 10,000,000 shares authorized at March 31, 2019 and December 31, 2018; no shares issued and outstanding at March 31, 2019 and December 31, 2018
Preferred Stock Value
Common stock, par value of $0.01 per share; 300,000,000 shares authorized at March 31, 2019 and December 31, 2018; 96,933,098 and 96,332,023 shares issued and outstanding at March 31, 2019 and December 31, 2018
Common Stock Value
Additional paid-in capital
Additional Paid In Capital Common Stock
Accumulated deficit
Retained Earnings Accumulated Deficit
TOTAL STOCKHOLDERS’ EQUITY
Stockholders Equity
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities And Stockholders Equity
Preferred stock, par value 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
Preferred stock, shares outstanding
Preferred Stock Shares Outstanding
Common stock, par value per share
Common Stock Par Or Stated Value Per Share
Common stock, shares authorized
Common Stock Shares Authorized
Common stock, shares issued
Common Stock Shares Issued
Common stock, shares outstanding
Common Stock Shares Outstanding
Amortization of beneficial conversion feature.
Net income loss available to common stock holders basic and diluted.
Income Statement [Abstract]
Statement [Table]
Statement [Table]
Product and Service
Product Or Service [Axis]
Product and Service
Products And Services [Domain]
Product
Product [Member]
Service
Service [Member]
Distribution Rights
Distribution Service [Member]
Statement [Line Items]
Statement [Line Items]
Revenue:
Revenue From Contract With Customer [Abstract]
Total revenue
Revenue From Contract With Customer Excluding Assessed Tax
Cost of revenue:
Cost Of Goods And Services Sold [Abstract]
Total cost of revenue
Cost Of Goods And Services Sold
Gross margin
Gross Profit
Operating expenses:
Operating Expenses [Abstract]
Research and development
Research And Development Expense
Selling and marketing
Selling And Marketing Expense
General and administrative
General And Administrative Expense
Total operating expenses
Operating Expenses
Loss from operations
Operating Income Loss
Interest income
Investment Income Interest
Interest expense
Interest Expense
Other (expense) income, net
Nonoperating Income Expense
Loss 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 loss and comprehensive loss
Net Income Loss
Amortization of beneficial conversion feature related to Series A convertible preferred stock
Amortization Of Beneficial Conversion Feature
Net loss attributable to common stockholders, basic and diluted
Net Income Loss Available To Common Stock Holders Basic And Diluted
Net loss per share, basic and diluted
Earnings Per Share Basic And Diluted
Weighted-average common shares used to compute net loss per share attributable to common stockholders, basic and diluted
Weighted Average Number Of Share Outstanding Basic And Diluted
Stock issued during period value warrant exercises.
Stock issued during period shares warrant exercises.
Adjustments to additional paid in capital warrant exercises.
Issuance of preferred stock shares.
Issuance of preferred stock value.
Statement Of Stockholders Equity [Abstract]
Equity Components
Statement Equity Components [Axis]
Equity Component
Equity Component [Domain]
Additional Paid-in Capital
Additional Paid In Capital [Member]
Common Stock
Common Stock [Member]
Accumulated Deficit
Retained Earnings [Member]
Class of Stock
Statement Class Of Stock [Axis]
Class of Stock
Class Of Stock [Domain]
Convertible Preferred Stock
Convertible Preferred Stock [Member]
Sale of Stock
Subsidiary Sale Of Stock [Axis]
Sale of Stock
Sale Of Stock Name Of Transaction [Domain]
Direct registered offering.
Direct Registered Offering
Direct Registered Offering [Member]
Balance
Temporary equity balance , shares
Temporary Equity Shares Outstanding
Temporary equity balance
Temporary Equity Carrying Amount Attributable To Parent
Balance, shares
Shares Outstanding
Issuance of common stock from option exercises
Stock Issued During Period Value Stock Options Exercised
Issuance of common stock from option exercises, shares
Stock Issued During Period Shares Stock Options Exercised
Issuance of common stock from releases of restricted stock units
Stock Issued During Period Value Restricted Stock Award Gross
Issuance of common stock from releases of restricted stock units, shares
Stock Issued During Period Shares Restricted Stock Award Gross
Stock-based compensation
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
Issuance of common stock, value
Stock Issued During Period Value New Issues
Issuance of common stock, shares
Stock Issued During Period Shares New Issues
Issuance of preferred Series A stock upon direct registered offering, value
Issuance Of Preferred Stock Value
Issuance of preferred Series A stock upon direct registered offering, share
Issuance Of Preferred Stock Shares
Issuance of common stock warrants in connection with direct registered offering
Adjustments To Additional Paid In Capital Warrant Issued
Issuance of common stock from warrant exercises
Stock Issued During Period Value Warrant Exercises
Issuance of common stock from warrant exercises, shares
Stock Issued During Period Shares Warrant Exercises
Reclassification of warrant liability to additional paid-in capital upon warrant exercises
Adjustments To Additional Paid In Capital Warrant Exercises
Net loss
Balance
Temporary equity balance , shares
Temporary equity balance
Balance, shares
Adjustments to additional paid in capital stock issued offering costs.
Offering cost
Adjustments To Additional Paid In Capital Stock Issued Offering Costs
Product upgrade reserve.
Fair value of common stock warrants reclassed from liability to additional paid-in capital upon exercise.
Fixed assets transferred from inventory.
Statement Of Cash Flows [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided By Used In Operating Activities [Abstract]
Adjustments to reconcile net loss to net cash used in operating activities:
Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract]
Depreciation and amortization
Depreciation And Amortization
Stock-based compensation
Share Based Compensation
Accretion on asset retirement obligation
Accretion Expense Including Asset Retirement Obligations
Change in fair value of warrant liabilities
Fair Value Adjustment Of Warrants
Amortization of debt discount and interest accrual
Amortization Of Debt Discount Premium
Product upgrade reserve
Product Upgrade Reserve
Changes in operating assets and liabilities:
Increase Decrease In Operating Capital [Abstract]
Accounts receivable
Increase Decrease In Accounts Receivable
Inventory
Increase Decrease In Inventories
Deposits on purchased inventory
Increase Decrease In Deposits Outstanding
Deferred cost of revenue
Increase Decrease In Deferred Charges
Prepaid expenses and other assets
Increase Decrease In Prepaid Deferred Expense And Other Assets
Accounts payable
Increase Decrease In Accounts Payable
Accrued expenses and other long-term liabilities
Increase Decrease In Accrued Liabilities And Other Operating Liabilities
Customer deposits and deferred revenue
Increase Decrease In Contract With Customer Liability
Net cash used in operating activities
Net Cash Provided By Used In Operating Activities
CASH FLOWS FROM INVESTING ACTIVITIES:
Net Cash Provided By Used In Investing Activities [Abstract]
Purchases of property and equipment
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 direct registered offering, gross
Proceeds From Issuance Of Common Stock
Payment of debt issuance cost
Payments Of Debt Issuance Costs
Proceeds from the exercise of stock options
Proceeds From Stock Options Exercised
Net cash provided by financing activities
Net Cash Provided By Used In Financing Activities
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — BEGINNING OF PERIOD
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — END OF PERIOD
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Supplemental Cash Flow Information [Abstract]
Cash paid for interest
Interest Paid Net
Cash paid for taxes
Income Taxes Paid
SUPPLEMENTAL NON-CASH INVESTING AND FINANCING ACTIVITIES:
Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract]
Fair value of common stock warrants reclassified from liability to additional paid-in capital upon exercise
Fair Value Of Common Stock Warrants Reclassed From Liability To Additional Paid In Capital Upon Exercise
Right-of-use assets obtained in exchange for new operating lease liabilities
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
Transfer of property and equipment from inventory
Property And Equipment Transferred From Inventory
Purchase of property and equipment in accounts payable and accrued liabilities
Capital Expenditures Incurred But Not Yet Paid
Offering costs included in accounts payable and accrued expenses
Liabilities Assumed1
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Background and Organization
Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block]
Accounting Policies [Abstract]
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Balance Sheet Components
Supplemental Balance Sheet Disclosures [Text Block]
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments
Fair Value Disclosures [Text Block]
Debt Instruments [Abstract]
Debt
Long Term Debt [Text Block]
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies
Commitments And Contingencies Disclosure [Text Block]
Revenue
Revenue From Contract With Customer [Text Block]
Equity financing.
Equity [Abstract]
Equity Financing
Equity Financing [Text Block]
The entire disclosure for stock warrant.
Warrants
Stock Warrant Disclosure [Text Block]
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation
Disclosure Of Compensation Related Costs Share Based Payments [Text Block]
Income Tax Disclosure [Abstract]
Income Tax
Income Tax Disclosure [Text Block]
Earnings Per Share [Abstract]
Net Loss per Share
Earnings Per Share [Text Block]
Related Party Transactions [Abstract]
Related Party Transactions
Related Party Transactions Disclosure [Text Block]
Basis of Presentation
Basis Of Accounting Policy Policy [Text Block]
Significant accounting policies.
Significant Accounting Policies
Significant Accounting Policies Policy [Text Block]
Recent Accounting Pronouncements
New Accounting Pronouncements Policy Policy [Text Block]
Recently adopted accounting pronouncements.
Recently Adopted Accounting Pronouncements
Recently Adopted Accounting Pronouncements Policy [Text Block]
Balance Sheet Related Disclosures [Abstract]
Schedule of Property and Equipment, Net
Property Plant And Equipment [Text Block]
Schedule of Accrued Liabilities
Schedule Of Accrued Liabilities Table [Text Block]
Schedule of Deferred Revenue
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Table [Text Block]
Schedule of Other Long Term Liabilities
Other Noncurrent Liabilities Table [Text Block]
Schedule of Fair Value of Financial Liabilities
Fair Value Liabilities Measured On Recurring Basis [Text Block]
Summary of Changes in Fair Value of Level 3 Financial Liabilities
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]
Debt Disclosure [Abstract]
Scheduled Future Payments on Term Loan
Schedule Of Maturities Of Long Term Debt Table [Text Block]
Schedule of Lease Costs and Cash Flow Transactions Arising From Lease Transactions
Lease Cost Table [Text Block]
Schedule of Future Minimum Payments and Interest Expense for Operating Leases
Lessee Operating Lease Liability Maturity Table [Text Block]
Schedule of Future Minimum Payments for Operating Leases
Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block]
Schedule of Revenue Disaggregated by Types and Geography
Disaggregation Of Revenue Table [Text Block]
Schedule of Key Terms of Placement Warrants
Schedule Of Stockholders Equity Note Warrants Or Rights [Text Block]
Summary of Assumptions using Black- Scholes Option Pricing Model to estimate fair value
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques Table [Text Block]
Summary of Company's Stock Option Activity and Related Information
Schedule Of Share Based Compensation Activity Table [Text Block]
Schedule of Weighted-Average Assumptions Used in Black-Scholes Option-Pricing Model to Estimate Fair Value of Employee Stock Option at Grant Date
Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block]
Summary of RSU Activity (Detail)
Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block]
Summary of Stock-Based Compensation Expense
Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block]
Anti-Dilutive Securities Excluded from Calculation of Diluted Net Loss Per Share
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block]
Net cash used from operating activities
Significant accounting policies.
Business And Summary Of Significant Accounting Policies [Table]
Business And Summary Of Significant Accounting Policies [Table]
Business And Summary Of Significant Accounting Policies [Table]
Adjustments for New Accounting Pronouncements
Adjustments For New Accounting Pronouncements [Axis]
Type of Adoption
Type Of Adoption [Member]
ASU 2016-02
Accounting Standards Update201602 [Member]
Significant Accounting Policies [Line Items]
Significant Accounting Policies [Line Items]
Cumulative-effect adjustment recorded to retained deficit upon adoption
Cumulative Effect Of New Accounting Principle In Period Of Adoption
Operating lease, right-of-use assets
Operating lease, liabilities
Operating Lease Liability
Schedule Of Property Plant And Equipment [Table]
Schedule Of Property Plant And Equipment [Table]
Property, Plant and Equipment, Type
Property Plant And Equipment By Type [Axis]
Property, Plant and Equipment, Type
Property Plant And Equipment Type [Domain]
Prototype.
Prototype
Prototype [Member]
Machinery and Equipment
Machinery And Equipment [Member]
Leasehold Improvements
Leasehold Improvements [Member]
Furniture and Fixtures
Furniture And Fixtures [Member]
Software
Software And Software Development Costs [Member]
Construction in Progress
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 and amortization
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
Property and equipment, net
Depreciation and amortization
Depreciation Depletion And Amortization
Accrued payable.
Accrued product upgrade reserve current.
Payables And Accruals [Abstract]
Accrued payroll and related benefits
Employee Related Liabilities Current
Accrued accounts payable
Accrued Payable
Payroll withholding tax, sales and other tax payable
Taxes Payable Current
Accrued legal, accounting and professional fees
Accrued Professional Fees Current
Product upgrade reserve
Accrued Product Upgrade Reserve Current
Other
Other Accrued Liabilities Current
Total accrued liabilities
Deferred Revenue Disclosure [Abstract]
Deferred Revenue Arrangement By Type [Table]
Deferred Revenue Arrangement By Type [Table]
Distribution rights.
Distribution Rights
Distribution Right [Member]
Deferred Revenue [Line Items]
Deferred Revenue Arrangement [Line Items]
Total deferred revenue
Contract With Customer Liability
Less: current portion of deferred revenue
Noncurrent portion of deferred revenue
Accrued interest noncurrent.
Accrued interest, noncurrent portion
Accrued Interest Noncurrent
Deferred rent, noncurrent portion
Deferred Rent Credit Noncurrent
Other
Other Sundry Liabilities Noncurrent
Total other-long term liabilities
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table]
Class of Warrant or Right
Class Of Warrant Or Right [Axis]
Class of Warrant or Right
Class Of Warrant Or Right [Domain]
2016 and 2017 private placement warrants.
Two Thousand Sixteen And Two Thousand Seventeen Private Placement Warrants
Two Thousand Sixteen And Two Thousand Seventeen Private Placement Warrants [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]
Change in fair value of Level 3 financial liabilities
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
Transfers between Level 1 to Level 2
Fair Value Liabilities Level1 To Level2 Transfers Amount
Transfers between Level 2 to Level 1
Fair Value Liabilities Level2 To Level1 Transfers Amount
Transfers into or out of Level 3
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value Hierarchy and NAV
Fair Value By Fair Value Hierarchy Level [Axis]
Fair Value Hierarchy and NAV
Fair Value Measurements Fair Value Hierarchy [Domain]
Level 1
Fair Value Inputs Level1 [Member]
Level 2
Fair Value Inputs Level2 [Member]
Level 3
Fair Value Inputs Level3 [Member]
Measurement Frequency
Fair Value By Measurement Frequency [Axis]
Fair Value, Measurement Frequency
Fair Value Measurement Frequency [Domain]
Fair Value Measurement on Recurring Basis
Fair Value Measurements Recurring [Member]
2017 private placement warrants.
2017 Placement Warrants
Two Thousand And Seventeen Private Placement Warrants [Member]
2016 private placement warrants.
2016 Placement Warrants
Two Thousand And Sixteen Private Placement Warrants [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]
Total Warrant Liability
2016 Placement Warrants
2017 Placement Warrants
Fair value, beginning of period
Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value
Change in fair value of Level 3 financial liabilities
Fair value of Placement Warrants at exercise
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements
Fair value, end of period
Number of installments.
Number of installments if achieving trailing revenue target and company so elects.
Final payment percentage of original principal amount.
Debt Instrument [Table]
Debt Instrument [Table]
Debt Instrument
Debt Instrument [Axis]
Debt Instrument, Name
Debt Instrument Name [Domain]
SVB tem loan.
SVB Term Loan
S V B Term Loan [Member]
CRG term loan.
CRG Term Loan
C R G Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Total principal amout
Debt Instrument Carrying Amount
Debt maturity date
Debt Instrument Maturity Date
Debt instrument interest rate percentage
Debt Instrument Interest Rate Stated Percentage
Frequency of periodic payment
Debt Instrument Frequency Of Periodic Payment
Number of installments
Number Of Installments
Number of installments if achieving trailing revenue target and company so elects
Number Of Installments If Achieving Trailing Revenue Target And Company So Elects
Debt instrument description
Debt Instrument Payment Terms
Final payment percentage of original principal amount
Final Payment Percentage Of Original Principal Amount
Debt extinguishment loss
Gains Losses On Extinguishment Of Debt
Write-off of unamortized debt discount and debt issuance costs
Write Off Of Deferred Debt Issuance Cost
Proceeds from term loan
Proceeds From Loans
Legal and consulting fees
Professional Fees
Long-term debt, maturities, repayments of interest and principal, in remainder of fiscal year.
Long term debt maturities repayments of interest and principal in year two.
Long term debt maturities repayments of interest and principal in year three.
Long term debt maturities repayments of interest and principal in year four.
Long term debt maturities repayments of interest and principal in year five.
The remainder of 2019
Long Term Debt Maturities Repayments Of Interest And Principal In Remainder Of Fiscal Year
2020
Long Term Debt Maturities Repayments Of Interest And Principal In Year Two
2021
Long Term Debt Maturities Repayments Of Interest And Principal In Year Three
2022
Long Term Debt Maturities Repayments Of Interest And Principal In Year Four
2023
Long Term Debt Maturities Repayments Of Interest And Principal In Year Five
Total future principal payments
Long Term Debt Maturities Repayments Of Interest And Principal
Less: unamortized debt discount
Debt Instrument Unamortized Discount
Carrying value of long-term debt
Long Term Debt
Less: current portion
Long Term Debt Current
Long-term portion
Lessee, operating lease, option to extend, expiration date.
Schedule Of Operating Leased Assets [Table]
Schedule Of Operating Leased Assets [Table]
Finite-Lived Intangible Assets by Major Class
Finite Lived Intangible Assets By Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name
Finite Lived Intangible Assets Major Class Name [Domain]
Lease Agreement
Lease Agreements [Member]
Subsequent Event Type
Subsequent Event Type [Axis]
Subsequent Event Type
Subsequent Event Type [Domain]
Subsequent Event
Subsequent Event [Member]
Geographical
Statement Geographical [Axis]
Geographical
Segment Geographical [Domain]
Oakwood Village, Ohio.
Oakwood Village, Ohio
Oakwood Village Ohio [Member]
Mountain View, California.
Mountain View, California
Mountain View California [Member]
Range
Range [Axis]
Range
Range [Member]
Maximum
Maximum [Member]
Minimum [Member]
Minimum [Member]
Operating Leased Assets [Line Items]
Operating Leased Assets [Line Items]
Area of land
Area Of Land
Lease agreement, expiration date
Lease Expiration Date1
Option to extend, description operating lease
Lessee Operating Lease Option To Extend
Option to extend, existence operating Lease
Lessee Operating Lease Existence Of Option To Extend
Lease agreement, option to extend expiration date
Lessee Operating Lease Option To Extend Expiration Date
Lessee lease commencement date.
Lease commencement date
Lessee Lease Commencement Date
Lease agreement, renewal term
Lessee Operating Lease Renewal Term
Weighted-average remaining lease term
Operating Lease Weighted Average Remaining Lease Term1
Weighted-average discount rate
Operating Lease Weighted Average Discount Rate Percent
Operating lease cost
Operating Lease Cost
Cash paid for amounts included in the measurement of lease liabilities
Operating Lease Payments
Operating Lease Liabilities Payments Due [Abstract]
The remainder of 2019
Lessee Operating Lease Liability Payments Remainder Of Fiscal Year
2020
Lessee Operating Lease Liability Payments Due Year Two
2021
Lessee Operating Lease Liability Payments Due Year Three
2022
Lessee Operating Lease Liability Payments Due Year Four
2023
Lessee Operating Lease Liability Payments Due Year Five
2024
Lessee Operating Lease Liability Payments Due Year Six
Thereafter
Lessee Operating Lease Liability Payments Due After Year Six
Total undiscounted cash flows
Lessee Operating Lease Liability Payments Due
Less: imputed interest
Lessee Operating Lease Liability Undiscounted Excess Amount
Present value of lease liabilities
Lessee, operating lease, interest expense, remainder of fiscal year.
Lessee, operating lease, interest expense, due in two years.
Lessee, operating lease, interest expense, due in three years.
Lessee, operating lease, interest expense, due in four years.
Lessee, operating lease, interest expense, due in five years.
Lessee, operating lease, interest expense, due in six years.
Lessee, operating lease, interest expense, due after year six.
Rent expense
Operating Leases Rent Expense Net
Operating Leases Future Minimum Payments Due [Abstract]
2019
Operating Leases Future Minimum Payments Due Current
2020
Operating Leases Future Minimum Payments Due In Two Years
2021
Operating Leases Future Minimum Payments Due In Three Years
2022
Operating Leases Future Minimum Payments Due In Four Years
2023
Operating Leases Future Minimum Payments Due In Five Years
Thereafter
Operating Leases Future Minimum Payments Due Thereafter
Total future minimum payments
Operating Leases Future Minimum Payments Due
Purchase commitments
Purchase Obligation
Revenues [Abstract]
Disaggregation Of Revenue [Table]
Disaggregation Of Revenue [Table]
U.S.
UNITED STATES
Outside of U.S. ("OUS")
Non Us [Member]
Disaggregation Of Revenue [Line Items]
Disaggregation Of Revenue [Line Items]
Product, service and distribution rights revenue
Remaining term of distribution agreement.
Revenues.
Revenues.
Revenues [Table]
Revenues [Table]
Type of Arrangement and Non-arrangement Transactions
Type Of Arrangement [Axis]
Arrangements and Non-arrangement Transactions
Arrangements And Nonarrangement Transactions [Member]
Itochu Corporation agreement.
Itochu Corporation Agreement
Itochu Corporation Agreement [Member]
Minimum
Revenues [Line Items]
Revenues [Line Items]
Distribution fees
Remaining term of distribution agreement
Remaining Distribution Agreement Term
Expected long-term trade receivables collection period.
Long-term trade credit maintenance services term.
Long-term trade receivables
Accounts Receivable Net Noncurrent
Expected long-term trade receivables collection period
Expected Long Term Trade Receivables Collection Period
Long-term trade credit maintenance services term
Long Term Trade Credit Maintenance Services Term
Allowance for doubtful accounts
Allowance For Doubtful Accounts Receivable
Deferred revenue, recognized
Contract With Customer Liability Revenue Recognized
Company recognized revenue from performance obligations satisfied in the prior period
Contract With Customer Performance Obligation Satisfied In Previous Period
Sale of stock number of additional shares issued in transaction.
Underwriting agreement date.
Option to purchase additional shares period.
Subsidiary Or Equity Method Investee Sale Of Stock By Subsidiary Or Equity Investee [Table]
Subsidiary Or Equity Method Investee Sale Of Stock By Subsidiary Or Equity Investee [Table]
Underwriters
Over Allotment Option [Member]
March two thousand eighteen direct registered offering.
March 2018 Direct Registered Offering
March Two Thousand Eighteen Direct Registered Offering [Member]
March two thousand eighteen direct registered offering warrants.
March 2018 Direct Registered Offering Warrants
March Two Thousand Eighteen Direct Registered Offering Warrants [Member]
Series a convertible preferred stock.
Series A Convertible Preferred Stock
Series A Convertible Preferred Stock [Member]
2017 private placement.
2017 Private Placement
Two Thousand And Seventeen Private Placement [Member]
2016 private placement.
2016 Private Placement
Two Thousand And Sixteen Private Placement [Member]
At the market offering program.
At The Market Offering Program
At The Market Offering Program [Member]
Maximum
Subsidiary Sale Of Stock [Line Items]
Subsidiary Sale Of Stock [Line Items]
Underwriting agreement date
Underwriting Agreement Date
Number of shares issued in transaction
Sale Of Stock Number Of Shares Issued In Transaction
Sale of stock, price
Sale Of Stock Price Per Share
Option to purchase additional shares
Option To Purchase Additional Shares Period
Number of additional shares issued in transaction
Sale Of Stock Number Of Additional Shares Issued In Transaction
Aggregate proceeds from issuance of common stock
Class of warrants or rights expiry date.
Stock issued during period
Warrants to purchase common stock, shares
Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights
Proceed from private placement and equity issuances, gross
Proceeds From Issuance Or Sale Of Equity
Warrant exercise price
Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1
Warrant expiration date
Class Of Warrants Or Rights Expiry Date
Warrant exercisable date
Class Of Warrant Or Righst Date From Which Warrants Or Rights Exercisable
Common stock warrants expiry term.
Warrant expiration period
Common Stock Warrants Expiry Term
Liabilities and stockholders equity authorized offering value.
Common stock authorized value.
Maximum aggregate offering price
Liabilities And Stockholders Equity Authorized Offering Value
Maximum common stock saleable shares, value
Common Stock Authorized Value
Common stock sold
Common stock warrant expiration date.
Common stock warrants.
Schedule of common stock warrants.
Schedule Of Common Stock Warrants [Table]
Schedule Of Common Stock Warrants [Table]
Equity classified common stock warrants.
Equity Classified Common Stock Warrants
Equity Classified Common Stock Warrants [Member]
Two thousand and fifteen placement equity classified common stock warrants.
2015 Placement Equity Classified Common Stock Warrants
Two Thousand And Fifteen Placement Equity Classified Common Stock Warrants [Member]
Related Party
Related Party Transactions By Related Party [Axis]
Related Party
Related Party [Domain]
Insiders.
Insiders
Insiders [Member]
Two thousand and eighteen direct registered offering.
2018 Direct Registered Offering
Two Thousand And Eighteen Direct Registered Offering [Member]
Measurement Input Type
Measurement Input Type [Axis]
Measurement Input Type
Measurement Input Type [Domain]
Expected Volatility
Measurement Input Price Volatility [Member]
Risk-free Interest Rate
Measurement Input Risk Free Interest Rate [Member]
Expected Dividend Yield
Measurement Input Expected Dividend Rate [Member]
2016 and 2017 Placement Warrants
Common Stock Warrants [Line Items]
Common Stock Warrants [Line Items]
Warrants issued
Exercise price
Common stock warrants, expiration date
Common Stock Warrants Expiration Date
Number of warrant exercised.
Net shares issued from stock warrant exercises.
Number of warrant exercised
Number Of Warrant Exercised
Stock issued during period
Net Shares Issued From Stock Warrant Exercises
Placement warrants not excercised and remained outstanding
Class Of Warrant Or Right Outstanding
Fair value of warrant liability upon issuance.
Fair value of warrants upon issuance
Fair Value Of Warrant Liability Upon Issuance
Warrants, fair value measurement inputs
Warrants And Rights Outstanding Term
Warrants, fair value measurement inputs
Warrants And Rights Outstanding Measurement Input
Allocated portion of proceeds from issuance of stock and warrants
Proceeds From Issuance Of Warrants
Class of warrant or right issuance month and year 1.
Number of warrants or rights exercised.
Class of warrant or right issuance month and year 2.
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Issuance Date
Class Of Warrant Or Right Issuance Month And Year1
Issuance Date
Class Of Warrant Or Right Issuance Month And Year2
Term
Exercise Price Per Share
Warrants Exercised
Class Of Warrant Or Right Exercised
Warrants Outstanding
(Gain) loss related to change in fair value
Fair value inputs1 liabilities quantitative information.
Expected Term
Measurement Input Expected Term [Member]
Fair Value Inputs1 Liabilities Quantitative Information [Line Items]
Fair Value Inputs1 Liabilities Quantitative Information [Line Items]
Expected term (in years)
Share-based compensation arrangement by share-based payment award number of shares available for grant.
Shares Available for Grant
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant [Abstract]
Shares Available for Grant, Beginning balance
Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant
Shares Available for Grant, Additional options authorized
Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized
Shares Available for Grant, Options granted
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
Shares Available for Grant, Options canceled
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
Shares Available for Grant, RSUs granted
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period
Shares Available for Grant, Ending balance
Number of Stock Options Outstanding
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward
Number of Stock Options Outstanding, Beginning balance
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
Number of Stock Options Outstanding, Options granted
Number of Stock Options Outstanding, Options exercised
Number of Stock Options Outstanding, Options canceled
Number of Stock Options Outstanding, Ending balance
Number of Stock Options Outstanding, Vested and exercisable
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
Number of Stock Options Outstanding, Vested and expected to vest
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number
Weighted- Average Exercise Price
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward
Weighted- Average Exercise Price, Beginning balance
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
Weighted- Average Exercise Price, Options granted
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
Weighted- Average Exercise Price, Options exercised
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
Weighted- Average Exercise Price, Options canceled
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
Weighted- Average Exercise Price, Ending balance
Weighted- Average Exercise Price, Vested and exercisable
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
Weighted- Average Exercise Price, Vested and expected to vest
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price
Share-based compensation arrangement by share-based payment award options weighted average remaining contractual term.
Weighted- Average Remaining Contractual Life (Years)
Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Remaining Contractual Term [Abstract]
Options Outstanding, Weighted- Average Remaining Contractual Life (Years)
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
Weighted- Average Remaining Contractual Life (Years), Vested and exercisable
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
Weighted- Average Remaining Contractual Life (Years), Vested and expected to vest
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1
Share based compensation arrangement by share based payment award options aggregate intrinsic value.
Aggregate Intrinsic Value
Share Based Compensation Arrangement By Share Based Payment Award Options Aggregate Intrinsic Value [Abstract]
Aggregate Intrinsic Value
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
Aggregate Intrinsic Value, Vested and exercisable
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
Aggregate Intrinsic Value, Vested and expected to vest
Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value
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
Award Type [Axis]
Equity Award
Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain]
Restricted Stock Units (RSUs)
Restricted Stock Units R S U [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value of options granted, per share
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
Grant date fair value of options vested
Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1
Aggregate intrinsic value of options exercised
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
Unrecognized compensation cost
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options
Weighted average period for recognition of compensation costs
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
Expected term (in years)
Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
Expected volatility%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate
Risk-free interest rate%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate
Expected dividend yield%
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
Share based compensation arrangement by share based payment award equity instruments other than options vested and unreleased.
Unvested at December 31, 2018, Number of Shares
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number
RSUs granted, Number of Shares
RSUs vested, Number of Shares
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period
Unvested at March 31, 2019, Number of Shares
Vested and unreleased, Number of Shares
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested And Unreleased
Outstanding at March 31, 2019, Number of Shares
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number
Unvested at December 31, 2018, 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
RSUs 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
RSUs 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
Unvested at March 31, 2019, Weighted Average Grant Date Fair Value
Share based compensation arrangement by share based payment award equity instruments other than options grants in period grant date fair value.
Total grant date fair value of RSUs
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Grant Date Fair Value
Total fair value of RSUs vested
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value
RSUs Granted
RSUs Vested
Share based compensation arrangement by share based payment award equity instruments other than options expected to vest number.
Unrecognized stock based compensation cost
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options
Shares expected to vest
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expected To Vest Number
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]
Income Statement Location
Income Statement Location [Axis]
Income Statement Location
Income Statement Location [Domain]
Research and Development
Research And Development Expense [Member]
Selling and Marketing
Selling And Marketing Expense [Member]
General and Administrative
General And Administrative Expense [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
Stock-based compensation expense capitalized
Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount
Income tax expense
Federal and state effective tax rate before valuation allowance
Effective Income Tax Rate Continuing Operations
Unrecognized tax benefits
Unrecognized Tax Benefits
Accrued interest and penalties related to uncertain tax positions
Unrecognized Tax Benefits Income Tax Penalties And Interest Expense
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
Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis]
Antidilutive Securities, Name
Antidilutive Securities Name [Domain]
Series A Convertible Preferred Stock (If Converted)
Options To Purchase Common Stock
Employee Stock Option [Member]
Common stock warrant.
Common Stock Warrants
Common Stock Warrant [Member]
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from calculation of diluted net loss per share
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
Percentage of royalty rate payable on sales.
Percentage of royalty expense based on net sales.
Schedule Of Related Party Transactions By Related Party [Table]
Schedule Of Related Party Transactions By Related Party [Table]
University of Florida research foundation.
University Of Florida Research Foundation
University Of Florida Research Foundation [Member]
Licensing Agreements
Licensing Agreements [Member]
Cost of Revenue
Cost Of Sales [Member]
Related Party Transaction
Related Party Transaction [Axis]
Related Party Transaction
Related Party Transaction [Domain]
Sales consulting agreement.
Sales Consulting Agreement [Member]
Sales Consulting Agreement [Member]
Investment manager of investment company.
Investment Manager of Investment Company
Investment Manager Of Investment Company [Member]
Related Party Transaction [Line Items]
Related Party Transaction [Line Items]
Common Stock granted in exchange for licensing
Stock Issued During Period Shares Issued For Services
Percentage of royalty payment based on sale
Percentage Of Royalty Rate Payable On Sales
Royalty payment per quarter
Payments For Royalties
Percentage of royalty expense based on net sales
Percentage Of Royalty Expense Based On Net Sales
Royalty Expense
Royalty Expense
Term of related party transaction.
Related party, agreement term
Related Party Transaction Term
Related party, total consideration
Due To Related Parties Current