Entity Central Index Key Operating Lease Imputed interest. Cover [Abstract] Entity Registrant Name Entity Registrant Name Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Document Type Document Type Entity Central Index Key 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 Interactive Data Current Entity Interactive Data Current Document Transition Report Document Transition Report Title of 12(b) Security Security12b Title Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation State Country Code Document Quarterly Report Document Quarterly Report Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity Shell Company Entity Shell Company Entity Current Reporting Status Entity Current Reporting Status Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, Address Line Two Entity Address Address Line2 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Statement Of Financial Position [Abstract] Assets Assets [Abstract] Current assets: Assets Current [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Prepaid expenses Prepaid Expense Current Other current assets Other Assets Current Total current assets Assets Current Property and equipment, net Property Plant And Equipment Net Operating lease right-of-use asset Operating Lease Right Of Use Asset Restricted cash Restricted Cash And Cash Equivalents 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 Current portion of long-term debt Long Term Debt Current Current portion of operating lease liabilities Operating Lease Liability Current Deferred revenue Deferred Revenue Current Total current liabilities Liabilities Current Long-term debt Long Term Debt Noncurrent Operating lease liabilities Operating Lease Liability Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Stockholders’ equity: Stockholders Equity [Abstract] Preferred stock, $0.001 par value; 10,000,000 shares authorized and no shares issued at March 31, 2020 and December 31, 2019 Preferred Stock Value Common stock, $0.001 par value; 100,000,000 shares authorized at March 31, 2020 and December 31, 2019; 44,868,558 and 44,413,372 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively Common Stock Value Additional paid-in capital Additional Paid In Capital Accumulated deficit Retained Earnings Accumulated Deficit Total stockholders’ equity Stockholders Equity Total liabilities and stockholders’ equity Liabilities And Stockholders Equity Preferred stock, par value Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Common stock, par value 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 Income Statement [Abstract] License and other revenue Revenue From Contract With Customer Excluding Assessed Tax Type of Revenue [Extensible List] Type Of Revenue Extensible List Operating expenses: Operating Expenses [Abstract] Research and development Research And Development Expense General and administrative General And Administrative Expense Total operating expenses Operating Expenses Loss from operations Operating Income Loss Other expense Nonoperating Income Expense Net loss Net Income Loss Net loss per share of common stock — basic and diluted Earnings Per Share Basic And Diluted Weighted average shares outstanding — basic and diluted Weighted Average Number Of Share Outstanding Basic And Diluted Stock issued during period shares at market sales agreement. Stock issued during period value at market sales agreement. Stock issued during period value follow on offering. Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid In Capital [Member] Accumulated Deficit Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Beginning balance Beginning balance, shares Shares Outstanding Issuance of common shares from follow-on public offering Stock Issued During Period Value Follow On Offering Stock issued during period shares follow on offering. Issuance of common stock for follow-on public offering, shares Stock Issued During Period Shares Follow On Offering Exercise of stock options Stock Issued During Period Value Stock Options Exercised Exercise of stock options, shares Stock Issued During Period Shares Stock Options Exercised Issuance of common shares from at-the-market sales agreement Stock Issued During Period Value At Market Sales Agreement Issuance of common shares from at-the-market sales agreement, shares Stock Issued During Period Shares At Market Sales Agreement Share-based compensation expense Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Net loss Ending balance Ending balance, shares Proceeds from the issuance of shares under an at-the-market sales agreement. Statement Of Cash Flows [Abstract] Operating activities Net Cash Provided By Used In Operating Activities [Abstract] Net loss Profit Loss 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 Depreciation Share-based compensation expense Share Based Compensation Non-cash interest expense Paid In Kind Interest Accretion of debt discount Deferred Finance Costs Own Share Lending Arrangement Issuance Costs Amortization Expense1 Amortization and accretion on available-for-sale investments, net Accretion Amortization Of Discounts And Premiums Investments Changes in operating assets and liabilities: Increase Decrease In Operating Capital [Abstract] Prepaid expenses and other current assets Increase Decrease In Prepaid Deferred Expense And Other Assets Other assets and liabilities Increase Decrease In Other Operating Capital Net Accounts payable and accrued liabilities Increase Decrease In Accounts Payable And Accrued Liabilities Net cash used in operating activities Net Cash Provided By Used In Operating Activities Investing activities Net Cash Provided By Used In Investing Activities [Abstract] Maturities of available-for-sale investments Proceeds From Sale And Maturity Of Available For Sale Securities Acquisition of property and equipment Payments To Acquire Property Plant And Equipment Net cash (used in) provided by investing activities Net Cash Provided By Used In Investing Activities Financing activities Net Cash Provided By Used In Financing Activities [Abstract] Proceeds from at-the-market sales agreement, net of issuance costs Proceeds From Issuance At The Market Proceeds from 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 Including Disposal Group And Discontinued Operations Cash, cash equivalents and restricted cash, end of period Reconciliation of cash, cash equivalents and restricted cash. Reconciliation of cash, cash equivalents and restricted cash Reconciliation Of Cash Cash Equivalents And Restricted Cash [Abstract] Cash and cash equivalents Restricted cash Restricted Cash Organization Consolidation And Presentation Of Financial Statements [Abstract] The Company Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Accounting Policies [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Property Plant And Equipment [Abstract] Property and Equipment, Net Property Plant And Equipment Disclosure [Text Block] Payables And Accruals [Abstract] Accrued Liabilities Accounts Payable Accrued Liabilities And Other Liabilities Disclosure Current [Text Block] Debt Disclosure [Abstract] Long-Term Debt Long Term Debt [Text Block] Equity [Abstract] Common Stock Stockholders Equity Note Disclosure [Text Block] Stock purchase warrants disclosure. Stock purchase warrants. Stock Purchase Warrants [Abstract] Stock Purchase Warrants Stock Purchase Warrants Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Share-Based Compensation Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Commitments And Contingencies Disclosure [Text Block] License and other agreements disclosure. License and other agreement. License And Other Agreement [Abstract] License and Other Agreements License And Other Agreements Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Earnings Per Share [Abstract] Net Loss Per Share Earnings Per Share [Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Unaudited interim financial information. Unaudited Interim Financial Information Unaudited Interim Financial Information Policy [Text Block] Use of Estimates Use Of Estimates Revenue Recognition Revenue From Contract With Customer Policy [Text Block] Research and Development Costs Research And Development Expense Policy Share-Based Compensation Compensation Related Costs Policy [Text Block] Cash Equivalents Cash And Cash Equivalents Policy [Text Block] Concentration of Credit Risk Arising From Cash Deposits in Excess of Insured Limits Concentration Risk Credit Risk Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Schedule of Property and Equipment, Net Property Plant And Equipment [Text Block] Schedule of Accrued Liabilities Schedule Of Accrued Liabilities Table [Text Block] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Second amended and restated loan and security agreement. Second Amended and Restated Loan and Security Agreement Second Amended And Restated Loan And Security Agreement [Member] Scheduled Payments for the Second Amended and Restated Loan and Security Agreement Schedule Of Maturities Of Long Term Debt Table [Text Block] Award Type Award Type [Axis] Award Type 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] Summary of Share-based Compensation Expense Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Summary of Activity Related to Stock Options Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of the Activity Related to RSUs Schedule Of Nonvested Share Activity Table [Text Block] Schedule of operating leases assets and liabilities. Operating Leases Included on the Balance Sheet Schedule Of Operating Leases Assets And Liabilities Future Minimum Commitments Due Under Non-Cancelable Operating Leases Lessee Operating Lease Liability Maturity Table [Text Block] Summary of Assets Measured at Fair Value Fair Value Assets Measured On Recurring And Nonrecurring Basis Table [Text Block] Potential Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Entity incorporation date Entity Incorporation Date Of Incorporation Cash and cash equivalents 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] Furniture and Fixtures Furniture And Fixtures [Member] Machinery and Equipment Machinery And Equipment [Member] Computer Equipment Computer Equipment [Member] Leasehold Improvements Leasehold Improvements [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 Estimated Useful Lives (Years) Property Plant And Equipment Useful Life Estimated Useful Lives (Years) Property Plant And Equipment Estimated Useful Lives Accrued research and development expenses. Accrued severance costs. Accrued research and development Accrued Research And Development Expenses Accrued employee costs Employee Related Liabilities Current Accrued severance Accrued Severance Costs Accrued professional fees Accrued Professional Fees Current Accrued expense Other Accrued Liabilities Current Accrued liabilities, current Debt Instruments [Abstract] Debt Instrument [Table] Debt Instrument [Table] Lender Name Line Of Credit Facility [Axis] Line of Credit Facility, Lender Line Of Credit Facility Lender [Domain] Silicon Valley Bank, MidCap funding III trust and MidCap financial trust. Silicon Valley Bank, MidCap Funding III Trust and MidCap Financial Trust Silicon Valley Bank Mid Cap Funding I I I Trust And Mid Cap Financial Trust [Member] Silicon Valley Bank, MidCap funding XII trust and MidCap financial trust. Silicon Valley Bank , MidCap Funding XII Trust and MidCap Financial Trust Silicon Valley Bank Mid Cap Funding X I I Trust And Mid Cap Financial Trust [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Final payment. Final Payment Final Payment [Member] Term C loan. Term C Loan Term C Loan [Member] Second amended and restated loan and security agreement, first tranche. Second Amended and Restated Loan and Security Agreement, Initial Tranche Second Amended And Restated Loan And Security Agreement First Tranche [Member] First amended and restated loan and security agreement. First Amended and Restated Loan and Security Agreement First Amended And Restated Loan And Security Agreement [Member] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Axis] Debt Instrument, Redemption, Period Debt Instrument Redemption Period [Domain] Prepayments Through October 1, 2020 Debt Instrument Redemption Period One [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Fixed interest rate Debt Instrument Interest Rate Stated Percentage Variable interest rate Debt Instrument Basis Spread On Variable Rate1 Debt instrument, description of variable rate basis Debt Instrument Description Of Variable Rate Basis Line of credit facility, maximum borrowing capacity Line Of Credit Facility Maximum Borrowing Capacity Line of credit facility remaining borrowing capacity not available for withdraw. Long term debt Long Term Debt Repayment of outstanding amount under the loan agreement including fees Repayments Of Debt Line of credit facility, remaining borrowing capacity description Debt Instrument Unused Borrowing Capacity Description Line of credit facility remaining borrowing capacity not available for withdraw Line Of Credit Facility Remaining Borrowing Capacity Not Available For Withdraw Line of credit facility, remaining borrowing capacity Line Of Credit Facility Remaining Borrowing Capacity Debt instrument final payment fee Prepayment fee percentage of original principal amount of the aggregate term loans. Debt instrument percentage periodic payment terms balloon payment to be paid. Minimum balance requirement for cash and cash equivalents. Debt Instrument, Payment Terms Debt Instrument Payment Terms Loans held-for-sale, maturity date Debt Instrument Maturity Date Prepayment fee percentage of the original principal amount of the aggregate term loans Prepayment Fee Percentage Of Original Principal Amount Of The Aggregate Term Loans Final payment during maturity Debt Instrument Percentage Periodic Payment Terms Balloon Payment To Be Paid Debt instrument final payment Debt Instrument Final Payment Fee Transfer of loans held-for-sale to portfolio loans Transfer Of Loans Held For Sale To Portfolio Loans1 Minimum balance requirement cash and cash equivalents Minimum Balance Requirement Cash And Cash Equivalents Debt instrument, principal balance payment Debt Instrument Periodic Payment Principal Debt Instrument, Final Payment, Interest Debt Instrument Periodic Payment Interest Accretion of final payment of amount borrowed. Interest expense on borrowings Interest Expense Borrowings Accretion of scheduled final payment Accretion Of Final Payment Of Amount Borrowed Accretion of deferred debt issuance costs Amortization Of Financing Costs Principal, 2020 Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year Long term debt maturities repayments of interest and final payment remainder of fiscal year. Interest and Final Payment, 2020 Long Term Debt Maturities Repayments Of Interest And Final Payment Remainder Of Fiscal Year Long term debt maturities repayments of principal interest and final payment remainder of fiscal year. Total, 2020 Long Term Debt Maturities Repayments Of Principal Interest And Final Payment Remainder Of Fiscal Year Common stock, shares authorized Common stock, par value Common stock, shares outstanding Warrants expiration term. Class Of Warrant Or Right [Table] Class Of Warrant Or Right [Table] Common stock warrants. Convertible Stock Warrant Common Stock Warrants [Member] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Maximum Maximum [Member] Minimum [Member] Minimum [Member] Class Of Warrant Or Right [Line Items] Class Of Warrant Or Right [Line Items] Number of stock that can be purchased by each warrant Class Of Warrant Or Right Number Of Securities Called By Each Warrant Or Right Class of warrant Exercise Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 Warrants expiration term Warrants Expiration Term Weighted average remaining life of warrants Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms 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] Stock Options Employee Stock Option [Member] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Two thousands and eleven stock incentive plan two thousands and sixteen equity incentive plan. 2011 Stock Incentive Plan, 2016 Equity Incentive Plan Two Thousands And Eleven Stock Incentive Plan Two Thousands And Sixteen Equity Incentive Plan [Member] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Research and Development Research And Development 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] Share-based compensation expense Allocated Share Based Compensation Expense Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Number of Shares, Options outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Number of Shares, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Number of Shares, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Number of Shares, Options outstanding, Ending balance Number of Shares, Options exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Weighted Average Exercise Price, Options outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Weighted Average Exercise Price, Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Weighted Average Exercise Price, Forfeited Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Weighted Average Exercise Price, Options outstanding, Ending balance Weighted Average Exercise Price, Options exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Two thousand sixteen employee stock purchase plan. Two Thousand Sixteen Employee Stock Purchase Plan Two Thousand Sixteen Employee Stock Purchase Plan [Member] Unrecognized compensation expense related to unvested stock options Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Expected to be recognized over a weighted average period Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Non-vested units outstanding, Number of Shares, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Number of Shares, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Number of Shares, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Number of Shares, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Non-vested units outstanding, Number of Shares, Ending balance Non-vested units outstanding, Weighted Average Exercise Price, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Non-vested units outstanding, Weighted Average Exercise Price, Ending balance Unrecognized compensation expense related to the RSUs Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Square footage of leased office space. Operating leases rent expense minimum rentals per month. Base annual rental income fixed percentage increase. Commitment and Contingencies [Line Items]. Commitment and Contingencies [Table] Commitment And Contingencies [Table] Commitment And Contingencies [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] GEORGIA GEORGIA Commitment And Contingencies [Line Items] Commitment And Contingencies [Line Items] Area of office leased Area Of Leased Office Space Operating lease agreement term Lessee Operating Lease Term Of Contract Operating lease agreement renewal option term Lessee Operating Lease Renewal Term Minimum monthly lease payments Operating Leases Rent Expense Minimum Rentals Per Month Percentage of increase per year Base Annual Rental Income Fixed Percentage Increase Liabilities Liabilities [Abstract] Total operating lease liabilities Operating Lease Liability Incremental borrowing rate. Lessee, operating lease, option to extend, description Lessee Operating Lease Option To Extend Incremental borrowing rate Incremental Borrowing Rate Operating lease, remaining lease term Operating Lease Weighted Average Remaining Lease Term1 2020 Operating Leases Future Minimum Payments Remainder Of Fiscal Year 2021 Operating Leases Future Minimum Payments Due In Two Years 2022 Operating Leases Future Minimum Payments Due In Three Years 2023 Operating Leases Future Minimum Payments Due In Four Years Total minimum lease payments Operating Leases Future Minimum Payments Due Less imputed interest Operating Lease Imputed Interest Total operating lease liabilities Operating Lease, Cost Operating Lease Cost Variable Lease, Cost Variable Lease Cost Short-term Lease, Cost Short Term Lease Cost Cash payments included in operating activities for operating lease liabilities Operating Lease Payments Amount of upfront payment and development milestones payment to be received under license agreement. Upfront payments. Development milestone payments. Threshold percentage of sales for tiered royalties. Schedule Of Research And Development Arrangement Contract To Perform For Others [Table] Schedule Of Research And Development Arrangement Contract To Perform For Others [Table] Research and Development Arrangement, Contract to Perform for Others, Type Research And Development Arrangement Contract To Perform For Others By Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type Research And Development Arrangement Contract To Perform For Others Type [Domain] Arctic Vision Limited [Member] Arctic Vision Limited Arctic Visions Limited [Member] Deferred Revenue Arrangement Type Deferred Revenue Arrangement Type [Axis] Deferred Revenue Deferred Revenue Arrangement Type [Domain] Upfront payment member. Upfront Payment Upfront Payment [Member] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Collaboration Agreements License And Service [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Other Current Liabilities Other Current Liabilities [Member] Minimum Research And Development Arrangement Contract To Perform For Others [Line Items] Research And Development Arrangement Contract To Perform For Others [Line Items] Amount of upfront payment and development milestones payment to be received under license agreement Amount Of Upfront Payment And Development Milestones Payment To Be Received Under License Agreement Upfront payment Upfront Payments Development milestone payments Development Milestone Payments Threshold percentage of sales for tiered royalties Threshold Percentage Of Sales For Tiered Royalties Other short-term collaboration agreements performance obligations period. Other short-term collaboration agreements performance obligations period Other Short Term Collaboration Agreements Performance Obligations Period Deferred revenue Contract With Customer Liability Current Fair value assets between level 1 level 2 and level 3 transfers amount. Significant transfers between Levels 1, 2 and 3 Fair Value Assets Between Level1 Level2 And Level3 Transfers Amount Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Cash and money markets. Cash and Money Markets Cash And Money Markets [Member] Restricted cash money market. Restricted Cash Money Market Restricted Cash Money Market [Member] 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] 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] Financial Assets: Assets Fair Value Disclosure [Abstract] Total financial assets Assets Fair Value Disclosure 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] Outstanding Stock Options Non vested restricted stock units. Non-vested Restricted Stock Units Non Vested Restricted Stock Units [Member] Stock Purchase 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] Antidilutive securities excluded from computation of earnings per share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Additional milestone payment. Pre-Launch Milestone Payments. First cumulative net sales of products. Subsequent Event [Table] Subsequent Event [Table] Bausch health ireland limited (Bausch). Bausch Health Ireland Limited Bausch Health Ireland Limited [Member] Collaborative Arrangement and Arrangement Other than Collaborative Type Of Arrangement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Arrangements And Nonarrangement Transactions [Member] Commercial Arrangement. Commercial Arrangement Commercial Arrangement [Member] Silicon Valley Bank. Silicon Valley Bank Silicon Valley Bank [Member] Paycheck protection program. PPP Loan Paycheck Protection Program [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Pre-launch milestone payments Pre Launch Milestone Payments Additional milestone payments Additional Milestone Payment First cumulative net sales of products First Cumulative Net Sales Of Products Eligible payroll costs. Aggregate principal amount Principal Amount Outstanding On Loans Securitized Interest rate on outstanding principal amount Debtor In Possession Financing Interest Rate On Borrowings Outstanding Note, term Debt Instrument Term Eligible Payroll Costs Eligible Payroll Costs Debt instrument, principal balance payment Debt Instrument, final payment, Interest