Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate Share Based Compensation Arrangement By Share Based Payment Cancelled Share Based Compensation Arrangement By Share Based Payment Exercised Aggregate Intrinsic Value, Exercised Aggregate Intrinsic Value, Granted Share Based Compensation Arrangement By Share Based Payment Granted Share Price Net Proceeds Proceeds from Debt, Net of Issuance Costs Shares, Issued Interest expense Remaining balance of notes payable Notes Payable, Current Interest Expense Interest rate on the Loan Short-term Debt [Line Items] Schedule of Short-term Debt [Table] Deferred FICA Tax Deferred Tax Assets, Other Tax Carryforwards Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Weighted Average Remaining Contractual Term (Years), Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract] Concentration Risk Type [Axis] VA/DoD net sales concentration [Member] Australian Bermuda Other comprehensive income (loss): Operating lease liabilities Increase (Decrease) in Other Operating Liabilities Cash payment for FDIC Effective Income Tax Rate Continuing Operations Accumulated deficit Net losses Net Sales [Member] Sales [Member] Taxable income offset, percentage Federal R&D credits [Member] New Jersey R&D credits [Member] Effective Income Tax Rate Reconciliation, Tax Contingency, Other, Percent Other Research and development credits carried forward years Research and development credits carried forward years NJ research and development NJ research and development Federal research and development Federal research and development Proceeds from borrowings Proceeds from Issuance of Debt Weighted average common shares outstanding - Basic and Diluted (see Note 13) Total income tax expense/(benefit) Interest and other income Other Assets, Noncurrent Accounts receivable, net Stockholders' Equity Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Schedule of stock purchase warrants outstanding Schedule of stock purchase warrants outstanding Schedule of other assets, net Schedule of Other assets, net Cloud Computing Arrangement, net Cloud Computing Arrangement, net Less: accumulated amortization Less: accumulated amortization Cloud Computing Arrangement Cloud Computing Arrangement VA/DOD Facilities [Member] Description of net sales, percentage Concentration Risk, Benchmark Description Channel Two [Member] Channel One [Member] Concentration risk percentage Schedule of company's net sales [Line Items] National Health Service [Member] Department of Veterans Affairs and Department of Defense [Member] Unusual Risks and Uncertainties [Table Text Block] Schedule of company's net sales Maximum company matching contribution Eligible employee compensation, percentage Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Third SPA Third SPA Non-cash charge Non-cash charge Second Securities Purchase Agreement Member Second SPA Shares issued. price per share Purchase Price per share First SPA First SPA Aggregate number of shares issued Aggregate number of shares issued Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Stock compensation State tax NOL sale Aggregate proceeds Sale of Stock, Consideration Received on Transaction Fair value of common stock shares issued Fair value of common stock shares issued Noncurrent liability Current liability Long-term Debt and Lease Obligation Debt, Current Related asset balance Related asset balance Net Book Value [Member] Number of channels. Number of channels Number Of Channels Concentration Risk, Percentage Revenue, percentage Inventory reserve charge Inventory Write-down Number of dispute settled Loss Contingency, Claims Settled, Number Notes Payable, Noncurrent (Gain) loss on legal fee obligation settled with stock Note payable, noncurrent Legal expense settled with stock Preferred Stock, Value, Issued Preferred Stock, par value $0.001 per share; 10,000,000 shares authorized as of December 31, 2021 and December 31, 2020; 0 shares issued and outstanding as of both December 31, 2021 and December 31, 2020 Supplemental cash flows disclosures: Proceeds from sale of state net operating losses Proceeds from sale of state net operating losses Risks And Uncertainties [Line Items] Risks And Uncertainties [Line Items] Additional shares of common stock Net proceeds from issuance of common stock after deducting underwriting discounts and commissions and offering costs Securities Purchase Agreement Additional shares of common stock Lender Name [Axis] Shares issued price per share Citibank N A [Member] Line of Credit Facility, Lender [Domain] Loans Insured or Guaranteed by Government Authorities [Domain] Loans Insured or Guaranteed by Government Authorities [Axis] Sale of net operating losses Paycheck Protection Program [Member] Other employee related expenses Other Employee-related Liabilities, Current Notes Payable Debt Instrument, Maturity Date Selling, general and administrative Monthly installments payable Total expense Research and development Schedule of restructuring and other related charges Restructuring and Related Costs [Table Text Block] Payment in lieu of severance Payment in lieu of severance Other Restructuring Costs Other restructuring costs Aggregate severance payment Amount payable in connection with restructuring charges Cash, FDIC Insured Amount Issuance of stock (see Note 12), Shares Issuance of stock (see Note 12) Stock Issued During Period, Shares, Other Stock Issued During Period, Value, Other Equity financing commitment fee, Shares Equity financing commitment fee, Shares Equity Financing Commitment Fee, Shares Equity financing commitment fee value. Equity financing commitment fee Equity Financing Commitment Fee Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Schedule of Defined Benefit Plans Disclosures [Table] Concentration Risk [Table] Prepaid expenses and other assets Schedule of additional information about stock options Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Percentage of incremental borrowing rate Debt Instrument, Interest Rate, Increase (Decrease) Number Of Board Of Directors Number of board of directors Number of board of directors. Additional Commitment Shares Issued Additional commitment shares issued on pro-rata Additional commitment shares issued. Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Subsequent Event [Line Items] Subsequent Event [Line Items] Lincoln Park Capital Fund L L C [Member] Lincoln Park Lincoln Park Capital Fund, LLC. Entity [Domain] Entity Legal Entity [Axis] Legal Entity Stock Purchase Agreement [Member] Stock Purchase Agreement Stock purchase agreement. Subsequent Event [Table] Subsequent Event [Table] Accrued liabilities in connection with remaining unpaid obligations Restructuring Reserve Loss before income taxes Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Percent Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Severance Costs1 Employee separation costs Restructuring And Related Cost Number Of Positions Eliminated Schedule of Recognized Stock Compensation for Equity Awards Weighted Average Exercise Price, Outstanding, December 31, 2019 Number of employees terminated Restructuring and other severance related charges Restructuring Charges Restructuring Cost And Reserve [Line Items] Restructuring Cost And Reserve [Line Items] Former Officer [Member] Former Officer Former officer. Chief Executive Officer [Member] Frank Amato Employee Severance [Member] Employee Severance Type Of Restructuring [Domain] Type of Restructuring Restructuring Cost And Reserve [Axis] Restructuring Type Schedule Of Restructuring And Related Costs [Table] Schedule Of Restructuring And Related Costs [Table] Warrants And Rights Outstanding Maturity Date Expiration Date Warrant Four [Member] Warrant Four Warrant four member. Warrant Three [Member] Warrant Three Warrant three member. Warrant Two [Member] Warrant Two Warrant two member. Warrant One [Member] Warrant One Warrant one member. Former Financial Advisor [Member] Former Financial Advisor Former financial advisor Purchase Obligation Purchase obligations Cash paid in settlement agreement Payments For Legal Settlements Class Of Warrant Or Right [Line Items] Class Of Warrant Or Right [Line Items] Madison Global Partners [Member] Former Financial Advisor Madison Global Partners. Class Of Warrant Or Right [Table] Class Of Warrant Or Right [Table] Defined Contribution Plan Employer Discretionary Contribution Amount Employer contributions Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised Defined Contribution Plan Sponsor Location Extensible List Defined contribution plan, sponsor location [Extensible list] Exercise Price Range Three [Member] Exercise Price $7.53 - $15.00 Exercise price range three. Exercise Price Range Two [Member] Exercise Price $2.51 - $7.52 Exercise price range two. Exercise price range one. Exercise Price $0.01 - $2.50 Exercise Price Range One [Member] Exercise Price Range Exercise Price Range Number of Warrants, Exercisable Stock Issued During Period Shares Stock Options Exercised Number of Options, Exercised Number of Warrants, Outstanding, Beginning Stock compensation expense Allocated Share Based Compensation Expense Vesting period Common Stock Fair Market Value Per Share Fair market value per share of common stock Common stock fair market value per share. Common Stock Capital Shares Reserved For Future Issuance Restructuring Charge Including Accelerated Stock Based Compensation Expense Restructuring charge including accelerated stock-based compensation expense Shares reserved for future issuance Plan terms Cost of goods Sold Cost Of Sales [Member] Research and Development Expense Research And Development Expense [Member] Restructuring charge including accelerated stock-based compensation expense. Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Selling General And Administrative Expenses [Member] Selling General And Administrative Expenses Income Statement Location [Domain] Income Statement Location Income Statement Location [Axis] Dividend yield Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Income Statement Location Non Employee Director [Member] Non-employee Director Non-employee Director. Employees And Consultants [Member] Employees and Consultants Employees and consultants. Title Of Individual With Relationship To Entity [Domain] Title of Individual Title Of Individual [Axis] Title of Individual Two Thousand Eighteen Omnibus Equity Incentive Plan [Member] 2018 Omnibus Equity Incentive Plan Two thousand eighteen omnibus equity incentive plan. Plan Name [Domain] Plan Name Plan Name [Axis] Plan Name Restricted Stock And Deferred Stock [Member] Stock Units Restricted stock and deferred stock. Options To Purchase Common Stock That Did Not Vest Immediately [Member] Options to Purchase Common Stock that Did Not Vest Immediately Options to purchase common stock that did not vest immediately. Common Stock Awards That Did Not Vest Immediately [Member] Common Stock Awards that Did Not Vest Immediately Common stock awards that did not vest immediately. Common Stock Awards That Vest At The Time Of Issuance [Member] Expected holding period, in years Common Stock Awards that Vest at the Time of Issuance Common stock awards that vest at the time of issuance. Restricted Stock [Member] Restricted Stock Awards Award Type Award Type [Axis] Award Type Share Based Compensation Award Tranche Four [Member] Options Vesting 25% on January 1, 2019, Remaining Vesting Over The Next 14 Quarters Share based compensation award tranche four. Share Based Compensation Award Tranche Three [Member] Options Vesting on January 1, 2019 Share Based Compensation Award Tranche Two [Member] Options Vesting of 25% on January 1, 2019 and Balance Over Next Succeeding 10 Calendar Quarters Share Based Compensation Award Tranche Five [Member] Options Vested Immediately Share based compensation award tranche five. Share Based Compensation Award Tranche One [Member] One Year Anniversary Vesting [Domain] Vesting Vesting [Axis] Vesting Debt Instrument [Line Items] Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate Debt Instrument [Line Items] Debt Instrument [Table] Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Fair value at grant date Weighted Average Exercise Price, Expired Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Exercised Debt Instrument [Table] Deferred Income Tax Expense Benefit Total deferred Current Income Tax Expense Benefit Total current Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Current Foreign Tax Expense Benefit Foreign Current State And Local Tax Expense Benefit State Current Federal Tax Expense Benefit Federal Weighted Average Exercise Price, Granted Income Loss From Continuing Operations Before Income Taxes Foreign Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Foreign Income Loss From Continuing Operations Before Income Taxes Domestic Domestic Deferred Tax Assets Liabilities Net Deferred tax assets, net Total deferred tax liabilities Deferred Income Tax Liabilities Deferred tax liabilities right of use asset. Right of use asset Deferred Tax Liabilities Right Of Use Asset Prepaid expenses Deferred Tax Liabilities Prepaid Expenses Fixed assets Deferred Tax Liabilities Property Plant And Equipment Deferred Tax Assets Net Total deferred tax assets Less valuation allowance Deferred Tax Assets Valuation Allowance Deferred Tax Assets Gross Deferred tax assets Deferred Tax Assets Leasing Arrangements Lease liabilities Deferred tax assets leasing arrangements. Deferred Tax Assets Tax Credit Carryforwards Research R&D credit Deferred Tax Assets Charitable Contribution Carryforwards Charitable contributions Deferred rent Deferred Tax Assets Inventory Inventory Deferred Tax Assets Goodwill And Intangible Assets Intangibles Accrued expenses Deferred Tax Assets Gross [Abstract] Deferred tax assets Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued Accruals relating to uncertain tax position Operating Loss Carryforwards Limitations On Use Operating loss carryforwards, limitations on use Cumulative Change In Ownership Percentage Cumulative change in ownership percentage Cumulative change in ownership percentage. Period For Cumulative Change In Ownership Period for cumulative change in ownership Period for cumulative change in ownership. Net operating loss carryforwards Deferred Tax Assets Operating Loss Carryforwards Net operating loss carryforwards Accumulated Non Capital Losses Accumulated non-capital losses Accumulated non-capital losses. Valuation Allowance Deferred Tax Asset Change In Amount Net change in valuation allowance Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items] Income Tax Disclosure [Line Items]. Income Tax [Table] Income Tax [Table] Income Tax Table. Provision for income taxes Provision for income taxes Loss incurred as pass-through Nondeductible expenses Effective Income Tax Rate Reconciliation Nondeductible Expense State tax expected (recovery), net of federal benefit Statutory rate Number Of Directors Appoint Number of directors appoint Number of directors appoint. Number Of Directors Number of directors Number of directors. Variable Interest Entity Ownership Percentage Variable interest entity ownership percentage Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Variable Interest Entity Primary Beneficiary [Member] ElectroCore (Aust) Pty Limited Schedule Of Variable Interest Entities [Table] Schedule Of Variable Interest Entities [Table] Debt Conversion Converted Instrument Amount1 Aggregate amount of bridge notes and related accrued and unpaid interest Debt Conversion Original Debt Amount1 Bridge note converted amount Proceeds From Issuance Of Preferred Stock And Preference Stock Proceeds from issuance of preferred stock Exercise Price Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 Exercise price of warrants Warrants to purchase common stock Number of Warrants Class Of Warrant Or Right Outstanding Warrants issued to purchase of stock Preferred Return Payable Upon Public Offering Preferred return payable upon public offering Preferred return payable upon public offering. Reduction In Preferred Return Percentage Reduction in preferred return percentage Reduction in preferred return percentage. Preferred Stock Dividend Rate Percentage Preferred return percentage Accrued And Unpaid Preferred Return Payable Accrued and unpaid preferred return payable Accrued and unpaid preferred return payable. Stock Issued During Period Shares Conversion Of Options Options to purchase common stock shares Stock issued during period shares, conversion of options. Number Of Vote Each Member Is Entitled To For Each Unit Held Weighted Average Exercise Price, Beginning balance Number of vote each member is entitled to for each unit held Number of vote each member is entitled to for each unit held. 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, Ending balance Number Of Classes Of Units Permitted For Issuance Number of classes of units permitted for issuance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Number of Warrants, Expired Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Number of Warrants, Exercised Number of classes of units permitted for issuance. Class Of Stock [Line Items] Number of Warrants, Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Class of Stock [Line Items] Exercise Price Two [Member] Number of Warrants , Outstanding Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Exercise Price Two Exercise price two. Exercise Price One [Member] Exercise Price One Exercise price one. Class Of Warrant Or Right [Domain] Class of Warrant or Right Class Of Warrant Or Right [Axis] Number of Warrants , Outstanding Ending balance Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit Class of Warrant or Right Advisors [Member] Advisors Advisors. Related Party [Domain] Related Party Exercise Price Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit Exercise Price Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Domain] Related Party Transactions By Related Party [Axis] Related Party Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range [Axis] Intrinsic value of Warrants, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Aggregate Intrinsic Value, Outstanding Equity purchase agreement. Stock Purchase Agreement Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Weighted average life (years), Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Equity Purchase Agreement [Member] Arrangements And Nonarrangement Transactions [Member] Weighted Average Remaining Contractual Term (Years) Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Weighted average exercise price, Exercisable Collaborative Arrangement and Arrangement Other than Collaborative Type Of Arrangement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Purchasers Of Bridge Notes [Member] Purchasers of Bridge Notes Purchasers of bridge notes. Financial Advisors [Member] Financial Advisors Financial advisors. Repurchase Agreement Counterparty Name [Domain] Counterparty Name Counterparty Name [Axis] Counterparty Name Promissory Notes [Member] Promissory Notes Promissory notes member. December2015 Term Loan [Member] December 2015 Term Loan December 2015 term loan member. Debt Instrument Name [Domain] Debt Instrument, Name Debt Instrument [Axis] Debt Instrument Series A Warrants [Member] Series A Warrants Series A warrants member. Schedule Of Stock By Class [Table] Schedule Of Stock By Class [Table] Warrant [Member] Nonvested restricted stock and unit awards [Member] Restricted Stock Units R S U [Member] Outstanding stock options [Member] Employee Stock Option [Member] Antidilutive Securities Name [Domain] Antidilutive Securities, Name Antidilutive Securities Earnings Per Share Pro Forma [Abstract] Debt Instrument Paid Date Debt instrument balance fully paid Debt Instrument Paid Date. Interest Expense Debt Interest expense Debt instrument, annual interest rate Debt Instrument Interest Rate Stated Percentage Debt Instrument Term Debt instrument, term Notes Payable [Line Items] Notes Payable [Line Items] Notes payable. Notes Payable Other Payables [Member] Finance and Security Agreement [Member] Short Term Debt Type [Domain] Short-term Debt, Type Short Term Debt Type [Axis] Short-term Debt, Type Schedule Of Notes Payable [Table] Schedule Of Notes Payable [Table] Schedule of notes payable. Other Accrued Liabilities Current Other accrued expenses Accrued Bonuses Current Accrued bonuses Accrued Professional Fees Current Accrued professional fees Accrued Liabilities Current [Abstract] Amortization Of Deferred Costs Amortization of deferred costs Amortization of deferred costs. Operating Leases Future Minimum Payments Due Total Operating Leases Future Minimum Payments Due Thereafter 2023 and thereafter Operating Leases Future Minimum Payments Due In Four Years 2022 Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price Weighted Average Exercise Price, Cancelled Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Weighted Average Exercise Price, Exercised Operating Leases Future Minimum Payments Due In Three Years Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Weighted Average Exercise Price, Granted 2021 Operating Leases Future Minimum Payments Due In Two Years 2020 Operating Leases Future Minimum Payments Due Current 2019 Lessee Operating Lease Liability Undiscounted Excess Amount Less: Amounts representing interest Lessee Operating Lease Liability Payments Due Total future minimum lease payments Lessee Operating Lease Liability Payments Due After Year Five Lessee Operating Lease Liability Payments Due Year Five 2026 Lessee Operating Lease Liability Payments Due Year Five And Thereafter 2023 and thereafter Lessee Operating Lease Liability Payments Due Year Four 2025 Number of Warrants, Exercisable Options Outstanding Lessee Operating Lease Liability Payments Due Year Three 2024 Lessee Operating Lease Liability Payments Due Year Two 2023 Lessee Operating Lease Liability Payments Due Next Twelve Months 2022 Change In Operating Lease Liabilities Change in operating lease liabilities Change in operating lease liabilities. Other Noncash Expense Noncash lease expense Operating Lease Weighted Average Remaining Lease Term1 Weighted average remaining lease term (in years) Lessee Operating Lease Description [Abstract] Operating leases: Operating Leases Rent Expense Net Total lease expense, in accordance with superseded lease standard Lease And Rental Expense Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Number of Options, Cancelled Stock Purchase Warrants [Member] Number of Warrants, Outstanding, Ending Number of Warrants, Outstanding, Beginning Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Share-based compensation arrangement by share-based payment award, number of shares reserved Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Unrecognized compensation expected to be recognized Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation cost related to equity awards Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 Recognized lease expenses Lessee, operating lease, incremental borrowing rate Lessee Operating Lease Discount Rate Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Number shares available to be awarded under the plan Weighted average discount rate Lessee Operating Lease Renewal Term Lessee, operating lease, extension term Lessee Operating Lease Option To Extend Lease option to extend Lessee Operating Lease Term Of Contract Lease, term of contract Lease Not Yet Recognized With Noncancelable Period Description Remaining lease term Lease not yet recognized with noncancelable period description. Share Based Compensation Arrangement By Share Based Payment Award Options Contractual Term Stock options, contractual life Lease Effective Date Effective date Lease effective date Total Total operating lease liabilities Operating Lease Liability Lease liabilities Lessee Lease Description [Line Items] Lessee Lease Description [Line Items] Building [Member] Share based compensation arrangement by share based payment award options contractual term. Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Issuable Pursuant To Exercise Of Stock Options Maximum number additional shares allowed pursuant to exercise of stock options under the plan Share based compensation arrangement by share based payment award, number of additional shares issuable pursuant to exercise of stock options. Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized Maximum number additional shares allowed under the plan Share Based Compensation Arrangement By Share Based Payment Award Percentage Of Outstanding Stock Maximum Maximum number of shares issuable under the plan, in proportion to common stock, percentage Building Lessee Lease Description [Table] Lessee Lease Description [Table] Property Plant And Equipment Disposals Write-off of assets Depreciation Depreciation Affiliated Entity [Member] Affiliate BERMUDA AUSTRALIA Fully Depreciated Assets [Member] Fully Depreciated Assets Fully depreciated assets. Property Plant And Equipment Gross Property and equipment - gross Computer Equipment And Software [Member] Computer Equipment and Software Computer equipment and software. Inventory Noncurrent Work In Process Noncurrent inventory work in process Inventory noncurrent work in process. Inventory Noncurrent Raw Materials Noncurrent inventory raw materials Inventory noncurrent raw materials. Inventory Valuation Reserves Inventory raw materials Inventory [Line Items] Inventory [Line Items] Inventory Valuation And Obsolescence [Member] Inventory Valuation and Obsolescence [Member] Change In Accounting Estimate Type [Domain] Change in Accounting Estimate, Type Change In Accounting Estimate By Type [Axis] Change in Accounting Estimate by Type Inventory Current [Table] Share Based Compensation Arrangement By Share Based Payment Award Terms Of Award Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Stock compensation expense not yet recognized Number of Warrants, Granted Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted Inventory Current [Table] Inventory Current And Noncurrent Total Inventory Inventory, current and noncurrent. Inventory Finished Goods Current And Noncurrent Finished Goods Inventory finished goods, current and noncurrent. Inventory Work In Process Current And Noncurrent Work in process Inventory work in process, current and noncurrent. Inventory Raw Materials Current And Noncurrent Raw materials Inventory raw materials, current and noncurrent. Cash And Cash Equivalents Fair Value Disclosure Cash and cash equivalents Fair Value Inputs Level3 [Member] (Level 3) Fair Value Inputs Level2 [Member] (Level 2) Fair Value Inputs Level1 [Member] (Level 1) Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Cash, cash equivalents and marketable securities, Fair Value Cash Cash Equivalents And Short Term Investments Marketable securities Available For Sale Debt Securities Amortized Cost Basis Marketable securities, Amortized Cost Cash And Cash Equivalents Accumulated Gross Unrealized Loss Before Tax Cash and cash equivalents, Unrealized (Loss) Office [Member] Cash and cash equivalents accumulated gross unrealized loss before tax. Cash and cash equivalents accumulated gross unrealized gain before tax. Cash and cash equivalents, Unrealized Gain Office Equipment [Member] Cash And Cash Equivalents Accumulated Gross Unrealized Gain Before Tax Cash and cash equivalents, Amortized Cost Cash And Cash Equivalents Amortized Cost Cash and Cash Equivalents, Amortized Cost Schedule Of Available For Sale Securities [Line Items] Schedule Of Available For Sale Securities [Line Items] Corporate Debt Securities [Member] Corporate Debt Securities Financial Instruments Financial Instrument [Axis] Financial Instrument U S Treasury Bond Securities [Member] Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Forfeitures And Expirations U.S. Treasury Bonds Commercial Paper [Member] Commercial Paper Investment Type Categorization [Member] Investments Investment Type [Axis] Investment Type Debt Securities Available For Sale [Table] Debt Securities Available For Sale [Table] Payment Term For Customers Payment term for customers Payment term for customers. Maximum Amount Of Reduction In Monthly Co Payments Of Each Prescription Amount Of Reduction From The Cost Of Each Refill For Maximum Of12 Months Revenue Remaining Performance Obligation Revenue remaining unsatisfied performance obligation Subsequent Event [Member] Subsequent Event Subsequent Event Type [Domain] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Awards, forfeited Number of Warrants, Outstanding Disaggregation Of Revenue [Line Items] Disaggregation Of Revenue [Line Items] Gain (Loss) on Extinguishment of Debt Other Other [Member] VA/DoD net sales concentration [Member] GERMANY Germany [Member] UNITED KINGDOM United Kingdom [Member] United States [Member] UNITED STATES Segment Geographical [Domain] Geographical Statement Geographical [Axis] Geographical Disaggregation Of Revenue [Table] Disaggregation Of Revenue [Table] Leasehold Improvements Term Leasehold improvements Leasehold improvements term. Property Plant And Equipment Useful Life Property and equipment, estimated useful lives Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Range [Member] Statistical Measurement Range [Axis] Awards, outstanding Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Number Of Shares Number of vested stock option Weighted average exercise price, Outstanding, Beginning Options initial exercise price Weighted average exercise price, Outstanding, Ending Statistical Measurement Computer Equipment [Member] Computer equipment [Member] Furniture and Fixture Furniture And Fixtures [Member] Furniture and fixtures [Member] Machinery And Equipment [Member] Machinery and equipment [Member] Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Number of units, forfeited Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Number Of Operating Segments Number of operating segment Property Plant And Equipment Estimated Useful Lives Property and equipment, estimated useful lives Revenue Performance Obligation Description Of Payment Terms Revenue performance obligation, description of payment terms Accounting Policies [Line Items] Accounting Policies [Line Items] Accounting policies. Leasehold Improvements [Member] Leasehold Improvements Property Plant And Equipment Type [Domain] Property, Plant and Equipment, Type Property Plant And Equipment By Type [Axis] Property, Plant and Equipment, Type Accounting Policies [Table] Accounting Policies [Table] Accounting policies. Payments Of Stock Issuance Costs Underwriting discounts and commissions and offering costs Common stock, issue price per share Shares Issued Price Per Share Options to purchase common stock shares, exercise price I P O [Member] IPO Schedule of warrants issued Schedule Of Stockholders Equity Note Warrants Or Rights [Text Block] Schedule of restricted stock awards granted Nonvested Restricted Stock Shares Activity Table [Text Block] Employee Stock [Member] 2019 Employee Stock Purchase Plan Sale Of Stock Name Of Transaction [Domain] Sale of Stock Subsidiary Sale Of Stock [Axis] Sale of Stock Schedule of income tax provision from continuing operations Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] Schedule Of Income Before Income Tax Domestic And Foreign Table [Text Block] Schedule of before provision for income taxes domestic and foreign Schedule of deferred income tax assets and liabilities Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] Schedule of income tax provision computed at statutory rates Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] Schedule Of Accrued Liabilities Table [Text Block] Schedule of accrued expenses and other current liabilities Schedule of future minimum lease payments under non-cancellable operating leases Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of inventories stated at lower of cost or market Schedule Of Inventory Current Table [Text Block] Cash and cash equivalents amortized cost. Schedule of cash, cash equivalents and marketable securities Schedule Of Cash Cash Equivalents And Short Term Investments Table [Text Block] Schedule of net sales disaggregated by geographic area Disaggregation Of Revenue Table [Text Block] Schedule of property and equipment, net Property Plant And Equipment [Text Block] Number of Options, Granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Number of units, granted Recent Accounting Pronouncements Not Yet Adopted [Policy Text Block] Recently Accounting Standards Not Yet Adopted Recent accounting pronouncements not yet adopted. New Accounting Pronouncements Policy Policy [Text Block] Recently Adopted Accounting Pronouncements Segment Reporting Policy Policy [Text Block] Segment Information Foreign Currency Transactions And Translations Policy [Text Block] Foreign Currency Translations and Transactions Research And Development Expense Policy Research and Development Income Tax Policy [Text Block] Income Taxes Stock Based Compensation Policy [Text Block] Stock Based Compensation Stock based compensation policy text block. Impairment Or Disposal Of Long Lived Assets Policy [Text Block] Share Based Compensation Arrangement By Share Based Payment Award Award Additional Vesting Period Impairment of Long-Lived Assets Cloud Computing Arrangement Policy [Text Block] Cloud Computing Arrangement Cloud computing arrangement. Lessee Leases Policy [Text Block] Leases Property Plant And Equipment Policy [Text Block] Property and Equipment Inventory Policy [Text Block] Unit-based compensation, additional vesting period Share based compensation arrangement by share based payment award award additional vesting period. Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage Inventories Receivables Policy [Text Block] Accounts Receivable Concentration Risk Credit Risk Concentration of Credit Risk Marketable Securities Policy Marketable Securities Cash And Cash Equivalents Policy [Text Block] Cash and Cash Equivalents Revenue Recognition Policy [Text Block] Revenue Recognition Use Of Estimates Use of Estimates Consolidation Policy [Text Block] Principles of Consolidation Basis Of Accounting Policy Policy [Text Block] Basis of Presentation Subsequent Events [Text Block] Subsequent Events Unit-based compensation, vesting rights percentage Subsequent Events [Abstract] Restructuring Charges and Other Related Charges Restructuring And Related Activities Disclosure [Text Block] Restructuring And Related Activities [Abstract] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Commitments And Contingencies Disclosure [Text Block] Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost Stock compensation Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Deferred Rent Commitments and Contingencies Commitments And Contingencies Disclosure [Abstract] Employee 401(K) Plan Compensation And Employee Benefit Plans [Text Block] Compensation And Retirement Disclosure [Abstract] Stock Based Compensation Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Warrant Liability Disclosure [Text Block] Warrant Liability The entire disclosure for warrant liability. Debt Disclosure [Abstract] Income Tax Disclosure [Text Block] Income Taxes Income Tax Disclosure [Abstract] Variable Interest Entity Disclosure [Text Block] Variable Interest Entity Variable Interest Entity [Abstract] Variable interest entity. Stockholders' Equity Stockholders Equity Note Disclosure [Text Block] Equity [Abstract] Earnings Per Share [Text Block] Net Loss Per Share Earnings Per Share [Abstract] Notes Payable Short Term Debt [Text Block] Notes Payable [Abstract] Accrued Expenses and Other Current Liabilities Accounts Payable And Accrued Liabilities Disclosure [Text Block] Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities Payables And Accruals [Abstract] Cloud Computing Arrangement [Text Block] Cloud Computing Arrangement Cloud computing arrangement. Cloud Computing Arrangement [Abstract] Change in valuation allowance for deferred tax assets Cloud computing arrangement. Lessee Operating Leases [Text Block] Leases Leases [Abstract] Property Plant And Equipment Disclosure [Text Block] Property and Equipment, Net Property Plant And Equipment [Abstract] Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance Effective income tax rate reconciliation, loss incurred as pass-through percentage. Inventory Disclosure [Text Block] Inventory Inventory Disclosure [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements Fair Value Disclosures [Abstract] Cash Cash Equivalents And Short Term Investments [Text Block] Cash, Cash Equivalents and Marketable Securities Investments Debt And Equity Securities [Abstract] Revenue From Contract With Customer [Text Block] Revenue Recognition Revenue From Contract With Customer [Abstract] Risks And Uncertainties [Text Block] Significant Risks and Uncertainties Risks and uncertainties. Risks And Uncertainties [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Accounting Policies [Abstract] The Company Interest Paid Net Interest paid Income Taxes Paid Net Income taxes paid Cash paid during the year for: Supplemental Cash Flow Information [Abstract] Net loss Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Supplemental schedule of noncash activity: Net cash provided by financing activities Net cash provided by (used in) financing activities Proceeds From Issuance Of Common Stock Aggregate proceeds from sale of common stock Aggregate proceeds from sale of common stock Proceeds from note issued Proceeds From Notes Payable Proceeds from borrowings Net Cash Provided By Used In Financing Activities [Abstract] Cash flows from financing activities: Net cash (used in) provided by investing activities Net Cash Provided By Used In Investing Activities Proceeds From Sale And Maturity Of Marketable Securities Proceeds from maturities of marketable securities Payments To Acquire Marketable Securities Purchase of marketable securities Net Cash Provided By Used In Investing Activities [Abstract] Cash flows from investing activities: Effective Income Tax Rate Reconciliation Loss Incurred As Pass Through Percentage Effective Income Tax Rate Reconciliation State And Local Income Taxes Income tax benefit Net Cash Provided By Used In Operating Activities Net cash used in operating activities Accrued expense and other current liabilities Increase Decrease In Accounts Payable Accounts payable Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Increase Decrease In Inventories Inventories Accounts receivable Increase Decrease In Accounts Receivable Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Other Noncash Income Expense Other Cash equivalents and marketable securities rate Adjustments Of Cloud Computing Implementation Cost Cloud computing arrangement implementation costs Adjustments of Cloud Computing Implementation Cost. Amortization of marketable securities premium Accretion Amortization Of Discounts And Premiums Investments Depreciation Depletion And Amortization Depreciation and amortization Share Based Compensation Stock based compensation Net Cash Provided By Used In Operating Activities [Abstract] Cash flows from operating activities: Statement Of Cash Flows [Abstract] Aggregate Amount Of Bridge Notes And Related Accrued And Unpaid Interest Aggregate amount of bridge notes and related accrued and unpaid interest Aggregate amount of bridge notes and related accrued and unpaid interest. Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights Shares Issued As Payment In Full For Accrued And Unpaid Preferred Return Payable Common stock shares issued as payment in full for accrued and unpaid preferred return payable Shares issued as payment in full for accrued and unpaid preferred return payable. Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Antidilutive securities excluded from computation of earnings per share, amount Antidilutive Securities Excluded From Computation Of Earnings Per Share By 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] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Research And Development Arrangement Contract To Perform For Others Costs Incurred Gross Cloud computing arrangement implementation cost incurred Lessee operating lease liability payments due year five and thereafter. Impaired Assets To Be Disposed Of By Method Other Than Sale Asset Name [Domain] Impaired Assets to be Disposed of by Method Other than Sale, Asset Name Impaired Assets To Be Disposed Of By Method Other Than Sale By Type [Axis] Impaired Assets to be Disposed of by Method Other than Sale by Type Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: accumulated depreciation Financing fees 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 Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Issuance of stock, shares Stock Issued During Period Shares New Issues Common stock, shares issued Cash And Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Loss Before Tax Current Cash, cash equivalents and marketable securities, Unrealized (Loss) Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in marketable security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Cash And Cash Equivalents And Marketable Securities Accumulated Gross Unrealized Gains Before Tax Current Cash, cash equivalents and marketable securities, Unrealized Gain Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in marketable security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Cash And Cash Equivalents And Marketable Securities Amortized Cost Basis Current Cash, cash equivalents and marketable securities, Amortized Cost Amortized cost of investment in cash, cash equivalents and marketable security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Units issued converted into common stock shares Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Marketable securities, Unrealized (Loss) Units converted into common stock shares Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Marketable securities, Unrealized Gain Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] Maximum amount of reduction in monthly co-payments of each prescription Maximum amount of reduction in monthly co-payments of each prescription. Amount of reduction from the cost of each refill for maximum of 12 months Amount of reduction from the cost of each refill for maximum of 12 months. Amount Of Reduction Patients Could Receive From Cost Of Co Payments Of First Month Of Therapy Amount of reduction patients could receive from cost of co-payments of first month of therapy Amount of reduction patients could receive from cost of co payments of first month of therapy. Organization Consolidation And Presentation Of Financial Statements [Line Items] Organization Consolidation And Presentation Of Financial Statements [Line Items] Organization consolidation and presentation of financial statements. Organization Consolidation And Presentation Of Financial Statements [Table] Organization Consolidation And Presentation Of Financial Statements [Table] Organization consolidation and presentation of financial statements. Schedule of weighted average assumptions used in valuing plans Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Schedule of restricted stock and deferred stock units granted Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Schedule of stock options granted Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Table [Text Block] Stock Issued During Period Shares Conversion Of Units Conversion of units to common stock, shares Total convertible preferred units Balances, end of period Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Schedule of Common Stock Equivalents Excluded from Computation of Diluted Loss per Share Schedule of future minimum lease payments under non-cancellable operating leases Schedule Of Future Minimum Rental Payments For Operating Leases Table [Text Block] Statement Of Cash Flow Information For Operating Leases Disclosures Table [Text Block] Supplemental Statement of Cash Flows Information for Operating Leases Schedule of supplemental balance sheet information for operating leases Supplemental Balance Sheet Information For Operating Leases Disclosure Table [Text Block] Schedule of assets and liabilities carried at fair value Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Organization Consolidation And Presentation Of Financial Statements [Abstract] Value of shares issued Common Stock, Value, Issued Cash and cash equivalents – beginning of year Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents – end of year Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Net increase (decrease) in cash and cash equivalents Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Effect of changes in exchange rates on cash and cash equivalents Increase Decrease In Accrued Liabilities And Other Operating Liabilities Adjustments 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: Issuance of common stock in connection with employee stock plans, net of forfeitures Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Redeemable Noncontrolling Interest Equity Preferred Carrying Amount Convertible Preferred Units Value, beginning of period Profits Interests [Member] Profits Interests Profits interests. Common Units Common Units Other Than Profits Interests [Member] Common Units Common units, other than profits interests. Series B Preferred Stock [Member] Series B Preferred Units Series A Preferred Stock [Member] Series A Preferred Units Class Of Stock [Domain] Class of Stock Statement Class Of Stock [Axis] Common Units Noncontrolling interest Noncontrolling Interest [Member] Total electroCore, Inc., stockholders' equity Parent [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income [Member] Accumulated deficit Retained Earnings [Member] Additional paid-in capital Additional Paid In Capital [Member] Common Stock [Member] Common Stock Equity Component [Domain] Equity Component Statement Equity Components [Axis] Equity Components Statement Of Stockholders Equity [Abstract] Comprehensive loss Comprehensive Income Net Of Tax Other comprehensive income (loss) Other Comprehensive Income Loss Net Of Tax Other comprehensive income Other comprehensive income (loss): Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] Statement Of Income And Comprehensive Income [Abstract] Weighted average and potential common shares outstanding - Basic and Diluted (see Note 13) Weighted Average Number Of Share Outstanding Basic And Diluted Net loss per share Earnings Per Share Basic And Diluted Net loss per share of common stock - Basic and Diluted (see Note 13) Net Income Loss Net loss Income Tax Expense Benefit Provision for income taxes Benefit from income taxes Total other (income) expense Nonoperating Income Expense Other expense Other Nonoperating Expense Interest and other income, net Operating Lease, Weighted Average Discount Rate, Percent Document Type Document and Entity Information [Abstract] Amendment Flag Document Type Document Period End Date Amendment Flag Document Fiscal Year Focus Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Trading Symbol Document Fiscal Period Focus Entity Registrant Name Trading Symbol Entity Central Index Key Entity Registrant Name Current Fiscal Year End Date Entity Central Index Key Entity Well-known Seasoned Issuer Current Fiscal Year End Date Entity Current Reporting Status Entity Well Known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Voluntary Filers Entity Small Business Entity Filer Category Entity Emerging Growth Company Entity Small Business Entity Ex Transition Period Entity Emerging Growth Company Entity Shell Company Entity Ex Transition Period Unrealized gain(loss) on marketable securities, net of taxes as applicable Entity Common Stock Shares Outstanding Entity Shell Company Entity Public Float Entity Common Stock Shares Outstanding Entity File Number Entity Public Float Entity Tax Identification Number Entity File Number Entity Address, Address Line One Entity Tax Identification Number Entity Address, Address Line Two Entity Address Address Line1 Entity Address, City or Town Entity Address Address Line2 Entity Address, State or Province Entity Address City Or Town Entity Address, Postal Zip Code Entity Address State Or Province City Area Code Entity Address Postal Zip Code Local Phone Number City Area Code Entity Interactive Data Current Local Phone Number Title of 12(b) Security Entity Interactive Data Current Security Exchange Name Security12b Title Entity Incorporation, State or Country Code Security Exchange Name Document Annual Report Entity Incorporation State Country Code Document Transition Report Document Annual Report Documents Incorporated by Reference Document Transition Report Statement Of Financial Position [Abstract] Documents Incorporated By Reference [Text Block] Assets [Abstract] Assets Assets Current [Abstract] Current assets: Cash And Cash Equivalents At Carrying Value Cash and cash equivalents Available For Sale Securities Debt Securities Current Marketable securities Accounts Receivable Net Current Marketable securities, Fair Value Inventories, net Accounts receivable, net Total current inventory Inventory Net Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Assets Current Total current assets Less: noncurrent inventory Inventory Noncurrent Property Plant And Equipment Net Property and equipment, net Operating Lease Right Of Use Asset Unrealized gain (loss) on marketable securities, net of taxes as applicable Property and equipment, net Right of use assets recognized for leases Operating lease right of use assets, net Other assets Other assets, net Assets Total assets Liabilities and Equity Liabilities And Stockholders Equity [Abstract] Liabilities Current [Abstract] Current liabilities: Accounts Payable Current Accounts payable Accrued expenses and other current liabilities Accrued expense and other current liabilities Short Term Non Bank Loans And Notes Payable Accrued expenses Notes payable remaining balance Notes payable, current Current portion of operating lease liabilities Current portion of operating lease liabilities Total current liabilities Operating Lease Liability Current Liabilities Current Operating Lease Liability Noncurrent Noncurrent operating lease liabilities Operating lease liabilities, noncurrent Liabilities Total liabilities Commitments And Contingencies Commitments and contingencies (Note 17) Additional Paid In Capital Common Stock Additional paid-in capital Retained Earnings Accumulated Deficit Accumulated deficit Accumulated other comprehensive income (loss) Accumulated deficit Total stockholders' equity Accumulated Other Comprehensive Income Loss Net Of Tax Noncontrolling interest Stockholders Equity Total equity Minority Interest Total liabilities and stockholders' equity Balances Preferred stock, par value Liabilities And Stockholders Equity Preferred stock, shares authorized Preferred Stock Par Or Stated Value Per Share Preferred stock, shares issued Preferred Stock Shares Authorized Preferred stock, shares outstanding Preferred stock, shares issued Common stock, par value Preferred Stock Shares Outstanding Common stock, shares authorized Common Stock Par Or Stated Value Per Share Common stock, shares issued Common Stock Shares Authorized Common stock, shares outstanding Common Stock Shares Issued Common Stock, beginning of period, shares Common Stock Shares Outstanding Income Statement [Abstract] Balances, end of period, shares Statement [Table] Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax Statement [Table] Consolidated Entities [Axis] Consolidated Entities Consolidated Entities [Domain] Consolidated Entities Subsidiaries [Member] Electrocore, LLC Subsidiary Statement [Line Items] Net sales Statement [Line Items] Total Net Sales Revenue From Contract With Customer Excluding Assessed Tax Cost Of Goods And Services Sold Cost of goods sold Gross Profit Gross profit Operating Expenses [Abstract] Foreign currency translation adjustment Operating expenses: Research And Development Expense Research and development Selling General And Administrative Expense Selling, general and administrative Total operating expenses Loss from operations Operating Expenses Other (income) expense: Operating Income Loss Nonoperating Income Expense [Abstract] Interest and other income Total other income Amortization of marketable securities premium Stockholders' Equity Note, Stock Split Stock split conversion, description Weighted average discount rate Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Share based compensation Loss before income taxes Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Balances Shares, Outstanding Balance, shares Stockholders Equity Including Portion Attributable To Noncontrolling Interest Stock and Unit-based compensation Balance, shares Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Issuance of common stock in connection with employee stock plans, net of forfeitures, shares Channels accounted percentage Unamortized asset balance Unamortized asset balance New Employee ICFR Auditor Attestation Flag Increase (Decrease) in Stockholders' Equity [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Tabular disclosure of revenue concentration. Schedule of Revenue Concentration [Table Text Block] Schedule of revenue concentration Proceeds from Sale of Notes Receivable Cash, cash equivalents and marketable securities Cash, cash equivalents and marketable securities Cash, cash equivalents and marketable securities. Schedule of Product Information [Table] Product and Service [Axis] Product and Service [Domain] VA/DoD facilities [Member] VA/DoD facilities [Member] Revenue from Rights Concentration Risk [Member] Number of DOD VAD Revenue Percentage Number of DODVAD revenue percentage Product Information [Line Items] Gain on extinguishment of debt Auditor Location Auditor Firm ID Auditor Name Gain on termination of joint venture Gain on lease settlement Termination Of Joint Venture Non controlling Interest Total of all noncontrolling interest, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest). 2020 bonus paid in stock An contractual arrangement whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a bonus, as defined in the agreement, of the entity or portion thereof. Employer contributions may be discretionary or may be based on a fixed formula related to individual, group and entity-wide performance goals, compensation, or other factors. It is a form of incentive compensation to employees in addition to their regular salary and profit sharing. 2027 and thereafter Common Stock, par value $0.001 per share; 500,000,000 shares authorized as of both December 31, 2021 and 2020; 70,704,123 shares issued and outstanding at December 31, 2021, and 45,559,765 shares issued and outstanding at December 31, 2020 Accrued Insurance, Current Aggregate Intrinsic Value, Cancelled Stock Issued During Period Value Settlement Of Accrued Bonus Settlement of accrued bonus Value of stock issued pursuant to settlement of accrued bonus during the period. Stock Issued During Period Shares Settlement Of Accrued Bonus Settlement of accrued bonus, shares Number of shares issued in connection with settlement of accrued bonus. Common stock shares Company gain amount Total amount paid Shares issued Weighted average discount rate Foreign currency translation adjustment - deconsolidation Foreign currency translation adjustment - deconsolidation Aggregate Intrinsic Value, Ending balance Weighted Average Remaining Contractual Term (Years), Ending balance Aggregate Intrinsic Value, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Aggregate Intrinsic Value , Granted Aggregate Intrinsic Value, Exercised Aggregate Intrinsic Value, Expired Weighted Average Exercise Price, Exercisable Weighted Average Remaining Contractual Term (Years), Exercisable Aggregate Intrinsic Value, Exerciable Number of Warrants, Shares Exercisable cash, cash equivalents percentage Allowance for bad debt Allowance for bad debt Allowance for bad debt Net Cash Provided by (Used in) Operating Activities, Continuing Operations Miscellaneous taxes payable Miscellaneous taxes payable Unrealized gain from termination of joint venture Unrealized gain from termination of joint venture Issuance of stock to satisfy certain obligations (see Note 12) Issuance of stock to satisfy certain obligations (see Note 12) Value of shares of stock issued issuance of stock to satisfy certain obligations Issuance of stock to satisfy certain obligations (see Note 12), Shares Issuance of stock to satisfy certain obligations (see Note 12), Shares Number of shares of stock issued Issuance of stock to satisfy certain obligations. Warrant [Member] Customer risk Concentration Risk Benchmark [Axis] Concentration Risk Type [Domain] Revenue channel [Member] Revenue channel [Member] Concentration Risk Benchmark [Domain] Fixed assets Prepaid expenses Right of use asset Total deferred tax liabilities Termination of joint venture Risk percentage Net sales percentage Number of facilities Number of sales facilities Concentration of revenue risks Amount of increase (decrease) in obligation for right of use operating leases. Right of use operating leases Increase Decrease in Right of Use Operating Leases Severance and other costs settled in cash Stockholders' Equity Note [Abstract] Increase Decrease In Financial Activities Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Expirations Number of Warrants, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercisable Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Exercised Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expired In Period Weighted Average Grant Date Fair Value Weighted Average Exercise Price, Expired Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable In Period Weighted Average Grant Date Fair Value Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable In Period Weighted Average Grant Date Fair Value Weighted Average Remaining Contractual Term (Years), Outstanding, December 31, 2021 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than OptionsOutstanding Weighted Average Remaining Contractual Terms One Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number Awards, granted Number of Warrants, Exercised Number of Warrants, Expired Number of Warrants, Outstanding Number of Warrants, Outstanding Weighted Average Exercise Price, Exercisable Weighted Average Remaining Contractual Term (Years), Outstanding, January 1, 2021 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Remaining Contractual Terms Exercisable Weighted Average Remaining Contractual Term (Years), Exercisable Aggregate Intrinsic Value, Outstanding, January 1, 2021 SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueGranted Aggregate Intrinsic Value, Granted Aggregate Intrinsic Value, Exercised Share based Compensation Arrangement By Share based Payment Award Equity Instruments Other Than Option Aggregate Intrinsic Value Expired Aggregate Intrinsic Value, Expired Sharebased Compensation Arrangement By Share based Payment Award Equity Instruments Other Than Option Aggregate Intrinsic Value Outstanding One Aggregate Intrinsic Value, Outstanding, December 31, 2021 Share based Compensation Arrangement By Share based Payment Award Equity Instruments Other Than Option Aggregate Intrinsic Value Exercisable Aggregate Intrinsic Value, Exercisable, December 31, 2021 Increase decrease in financial activities Net Sales Concentration Percentage Net sales concentration percentage VADoD Facilities More Than Net Sales [Member] Number of VA/DoD facilities accounting for more than 10% of VA/DoD net sales [Member] Gain on termination of joint venture Gain (Loss) on Contract Termination Restructuring and other related charges Net Sales - Revenue from Rights Concentration Risk Gain on lease settlement Gain on termination of joint venture Stock Issued Settlement of certain obligations through issuance of common stock Proceeds from Other Equity Proceeds from shares issued, net of related expenses Operating Lease, Right-of-Use Asset, Amortization Expense Accounts Receivable, Credit Loss Expense (Reversal) Increase in allowance for doubtful accounts Gain on extinguishment debt Write-off of right of use operating lease asset Noncash Lease Expense Net Noncash lease expense Amount of net expense or loss included in net income that result in no cash flow, classified as leases.