Cover [Abstract] Document Type Document Type 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 Entity Registrant Name Entity Registrant Name Entity Central Index Key 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 Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity Current Reporting Status Entity Current Reporting Status Entity Shell Company Entity Shell Company Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address Address Line1 Entity Address, Address Line One 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 Security12b Title Title of 12(b) Security Security Exchange Name Security Exchange Name Entity Incorporation State Country Code Entity Incorporation, State or Country Code Entity Interactive Data Current Entity Interactive Data Current Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Statement Of Financial Position [Abstract] Assets [Abstract] Assets Assets Current [Abstract] Current assets: Cash And Cash Equivalents At Carrying Value Cash and cash equivalents Accounts Receivable Net Current Accounts receivable, net Accounts receivable, net Inventory Net Inventory Net Investment In Lease Current Current portion of net investments in sales-type leases Prepaid Expense Current Current portion of prepaid commission expense Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Assets Current Total current assets Property Plant And Equipment Net Property and equipment, net Property and equipment, net Operating Lease Right Of Use Asset Operating lease right-of-use assets Net Investment In Lease Noncurrent Net investments in sales-type leases Prepaid Expense Noncurrent Prepaid commission expense Other Assets Noncurrent Other assets Assets Total Assets Liabilities Current [Abstract] Current liabilities: Accounts Payable Current Accounts payable Accrued Liabilities Current Accrued expenses Accrued expenses Accrued liabilities Deferred Revenue Current Deferred revenue Operating Lease Liability Current Current portion of operating lease liabilities Long Term Debt Current Less current portion Current portion of long-term debt, net Liabilities Current Total current liabilities Long Term Debt Noncurrent Long-term debt, net Deferred Revenue Noncurrent Deferred revenue Operating Lease Liability Noncurrent Operating lease liabilities Liabilities Total Liabilities Commitments And Contingencies Commitments and contingencies (Note 16) Stockholders Equity [Abstract] Stockholders' Equity: Preferred Stock Value Preferred stock, $0.01 par value: 10,000 shares authorized; no shares issued or outstanding at June 30, 2021 and December 31, 2020 Common Stock Value Common stock, $0.01 par value: 200,000 shares authorized; 26,167 and 19,114 shares issued and outstanding at June 30, 2021 and December 31, 2020, respectively Additional Paid In Capital Common Stock Additional paid-in capital Retained Earnings Accumulated Deficit Accumulated deficit Accumulated deficit Stockholders Equity Ending balance Beginning balance Total Stockholders' Equity Liabilities And Stockholders Equity Total Liabilities and Stockholders' Equity Preferred Stock Par Or Stated Value Per Share Preferred stock, par value Preferred Stock Shares Authorized Preferred stock, shares authorized Preferred Stock Shares Issued Preferred stock, shares issued Preferred Stock Shares Outstanding Preferred stock, shares outstanding Common Stock Par Or Stated Value Per Share Common stock, par value Common Stock Shares Authorized Common stock, shares authorized Common Stock Shares Issued Common stock, shares issued Shares of common stock issued Common Stock Shares Outstanding Common stock, shares outstanding Income Statement [Abstract] Revenue From Contract With Customer Excluding Assessed Tax Revenues Cost Of Goods And Services Sold Cost of revenues Gross Profit Gross Profit Operating Expenses [Abstract] Operating expenses: Selling And Marketing Expense Sales and marketing General And Administrative Expense General and administrative Research And Development Expense Research and development Operating Expenses Total operating expenses Operating Income Loss Loss from Operations Other Nonoperating Income Expense [Abstract] Other (income) expense: Interest Expense Interest expense Gains Losses On Extinguishment Of Debt Loss on extinguishment of debt Other Nonoperating Income Expense Other income, net Net Income Loss Net loss Net Loss Earnings Per Share, Basic Net loss per share of common stock outstanding, basic Earnings Per Share, Diluted Net loss per share of common stock outstanding, diluted Weighted Average Number of Shares Outstanding, Basic Weighted-average common shares outstanding, basic Weighted Average Number of Shares Outstanding, Diluted Weighted-average common shares outstanding, diluted Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Statement Equity Components [Axis] Equity Component Common Stock Additional Paid-in Capital Accumulated Deficit Statement [Line Items] Statement [Line Items] Shares Outstanding Ending balance, shares Beginning balance, shares Stock Issued During Period Value Stock Options Exercised Share-based awards and options exercises Stock Issued During Period Shares Stock Options Exercised Number of Shares under Option, Exercised Share-based awards and options exercises, shares Stock Issued During Period, Value, New Issues Issuance of common stock, net of issuance costs of $401 Stock Issued During Period, Shares, New Issues Issuance of common stock, net of issuance costs of $401 (in shares) Common stock shares issued and sold Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Share-based compensation expense Issuance costs on issuance of common stock. Issuance Costs On Issuance Of Common Stock Issuance of common stock, issuance costs Statement Of Cash Flows [Abstract] Net Cash Provided By Used In Operating Activities [Abstract] Cash Flows from Operating Activities: Profit Loss Net loss 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: Depreciation Depletion And Amortization Depreciation and amortization Share Based Compensation Share-based compensation Amortization Of Financing Costs And Discounts Non-cash interest expense Cost of rental units purchased by customers. Cost Of Rental Units Purchased By Customers Cost of rental units purchased by customers Non cash gains losses on extinguishment of debt. Non Cash Gains Losses On Extinguishment Of Debt Loss on extinguishment of debt Increase Decrease In Operating Capital [Abstract] Changes in certain assets and liabilities: Increase Decrease In Accounts Receivable Accounts receivable, net Increase Decrease In Inventories Inventory Increase decrease in net investment in sales type leases. Increase Decrease In Net Investment In Sales Type Leases Net investments in sales-type leases Increase decrease in leasehold reimbursement. Increase Decrease In Leasehold Reimbursement Leasehold reimbursement Increase (decrease) in prepaid commission expense. Increase Decrease In Prepaid Commission Expense Prepaid commission expense Increase Decrease In Prepaid Expenses Other Prepaid expenses and other assets Increase Decrease In Accounts Payable Accounts payable Increase Decrease In Accrued Liabilities Accrued expenses Increase Decrease In Contract With Customer Liability Deferred revenue Net Cash Provided By Used In Operating Activities Cash flows from operating activities Net Cash Used in Operating Activities Net Cash Provided By Used In Investing Activities [Abstract] Cash Flows from Investing Activities: Payments To Acquire Productive Assets Purchases of property and equipment and capitalized software Net Cash Provided By Used In Investing Activities Net Cash Used in Investing Activities Net Cash Provided By Used In Financing Activities [Abstract] Cash Flows from Financing Activities: Proceeds From Issuance Of Long Term Debt Proceeds from issuance of long-term debt Repayments Of Long Term Debt Repayment of long-term debt Payments Of Debt Issuance Costs Payments of debt issuance costs Proceeds From Stock Options Exercised Proceeds from exercises of stock options Proceeds from Issuance of Common Stock Proceeds from the issuance of common stock Net proceeds from initial public offering Payments of Stock Issuance Costs Payments of common stock offering issuance costs Net Cash Provided By Used In Financing Activities Net Cash Provided by Financing Activities Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect Net Increase (Decrease) in Cash and Cash Equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Cash and Cash Equivalents, End of Period Cash and Cash Equivalents, Beginning of Period Supplemental Cash Flow Information [Abstract] Supplemental disclosure of cash flow information: Interest Paid Net Cash paid for interest Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Supplemental disclosure of non-cash investing and financing activities: Capital Expenditures Incurred But Not Yet Paid Purchases of property and equipment and capitalized software in accounts payable and accrued expenses Organization Consolidation And Presentation Of Financial Statements [Abstract] Nature Of Operations Description of Business Accounting Policies [Abstract] Basis Of Accounting Basis of Presentation Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies New Accounting Pronouncements And Changes In Accounting Principles [Abstract] New Accounting Pronouncements And Changes In Accounting Principles [Text Block] Recent Accounting Pronouncements Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurement and Financial Instruments Receivables [Abstract] Loans Notes Trade And Other Receivables Disclosure [Text Block] Accounts Receivable Property Plant And Equipment [Abstract] Property Plant And Equipment Disclosure [Text Block] Property and Equipment and Capitalized Software Leases [Abstract] Leases of lessee and lessor. Leases Of Lessee And Lessor Disclosure [Text Block] Leases Amortization Of Deferred Charges [Abstract] Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Text Block] Prepaid Commission Expense Payables And Accruals [Abstract] Accounts Payable And Accrued Liabilities Disclosure [Text Block] Accrued Expenses Deferred Revenue [Abstract] Revenue From Contract With Customer [Text Block] Deferred Revenue Debt Disclosure [Abstract] Debt Disclosure [Text Block] Debt Equity [Abstract] Stockholders Equity Note Disclosure [Text Block] Common Stock Earnings Per Share [Abstract] Earnings Per Share [Text Block] Loss Per Share Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Share-Based Compensation Commitments And Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] Commitments and Contingencies Segments Geographical Areas [Abstract] Segment Reporting Disclosure [Text Block] Geographical Segment Information Restructuring And Related Activities [Abstract] Restructuring And Related Activities Disclosure [Text Block] Severance Basis Of Accounting Policy Policy [Text Block] Interim Financial Statements Use Of Estimates Use of Estimates Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [Text Block] Schedule of Carrying Amounts and Fair Values of Financial Instruments Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Composition of Accounts Receivable, Net Property Plant And Equipment [Text Block] Summary of Composition of Property and Equipment, Net Schedule of supplemental cash flow information related to leases. Schedule Of Supplemental Cash Flow Information Related To Leases Table [Text Block] Schedule of Supplemental Cash Flow Information as Lessee Related to Leases Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of Future Payments of Operating Lease Liabilities Sales Type Lease Lease Income Table [Text Block] Schedule of Profit Recognized on Sales-type Leases Sales Type And Direct Financing Leases Lease Receivable Maturity Table [Text Block] Schedule of Maturity Analysis of Undiscounted Lease Receivables Related to Sales-type Leases Lessor Operating Lease Payments To Be Received Maturity Table [Text Block] Schedule of Maturity Analysis of Undiscounted Lease Receivable Related to Operating Leases Schedule Of Accrued Liabilities Table [Text Block] Summary of Composition of Accrued Expenses Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Table [Text Block] Summary of Percentages of Deferred Revenue by Year Schedule Of Debt Instruments [Text Block] Summary of Composition of Debt Schedule Of Stock By Class [Text Block] Summary of Common Stock Issued and Reserved for Issuance Schedule Of Stockholders Equity Note Warrants Or Rights [Text Block] Summary of Outstanding Warrants Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Text Block] Schedule of Potentially Dilutive Securities Outstanding Excluded from Diluted Loss Per Share Calculation Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Summary of Share-Based Compensation Expense Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of Stock Option Activity Schedule Of Share Based Compensation Restricted Stock Units Award Activity Table [Text Block] Summary of Restricted Stock Units and Performance Restricted Stock Units Activity Tabular disclosure of the significant assumptions used during the year to estimate the fair value of equity instruments other than options, including, but not limited to: (a) expected term of equity instruments other than options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Schedule of Share-based Payment Award, Equity instruments Other Than Options, Valuation Assumptions [Table Text Block] Summary of Inputs and Assumptions used to Estimated Grant-date Fair Value of Performance Restricted Stock Units Statement Geographical [Axis] Geographical United States International Revenue From External Customers By Geographic Areas Table [Text Block] Summary of Revenue Generated in Geographic Regions for Years Indicated Schedule Of Entity Wide Information Revenue From External Customers By Products And Services [Text Block] Summary of Revenue Generated in Product Category for Years Indicated Description of Business. Description Of Business [Table] Description Of Business [Table] Credit Facility [Axis] Credit Facility Paycheck Protection Program. Paycheck Protection Program (the "PPP") Thirty five million credit facility. $35.0 Million Credit Facility Line Of Credit Facility [Axis] Line of Credit Facility, Lender Silicon Valley Bank. Silicon Valley Bank Oxford Finance LLC. Oxford Finance LLC Description of business. Description Of Business [Line Items] Description Of Business [Line Items] Unsecured Debt Unsecured debt Line Of Credit Borrowings outstanding under credit facility Line Of Credit Facility Expiration Date1 Credit facility maturity date Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Quoted Prices In Active Markets (Level 1) Investment Type [Axis] Investments Money market funds Fair Value By Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Default] Carrying Amount Fair Value Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Assets Fair Value Disclosure [Abstract] Assets Assets Fair Value Disclosure Total assets Accounts Receivable Gross Current Gross accounts receivable - trade Allowance For Doubtful Accounts Receivable Current Less: Allowances for doubtful accounts Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset Laboratory Equipment Office Equipment Computer Equipment and Software Manufacturing Equipment Leasehold Improvements Rental Equipment Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Property Plant And Equipment Gross Property and equipment, gross Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Less: Accumulated depreciation Balance Sheet Location [Axis] Balance Sheet Location Prepaid Expenses and Other Current Assets [Member] Other Assets [Member] Depreciation And Amortization Depreciation and amortization expense Capitalized Computer Software Net Capitalized software cost, net Leases. Leases [Table] Leases [Table] Headquarters and office equipment, including copiers. Headquarters and Office Equipment, Including Copiers Product Or Service [Axis] Product and Service NeuroStar Advanced Therapy Systems. NeuroStar Advanced Therapy Systems Range [Axis] Statistical Measurement Minimum Maximum Leases. Leases [Line Items] Leases [Line Items] Area of lease facility. Area Of Lease Facility Area of lease facility Lessee Finance Lease Lease Not Yet Commenced Description Lessee, finance lease, lease not yet commenced, description Operating Lease Expense Operating lease, rent expense, net Operating Lease Weighted Average Remaining Lease Term1 Operating lease, weighted-average remaining lease term Operating Lease Weighted Average Discount Rate Percent Operating lease, weighted-average discount rate Reimbursement of leasehold expenses. Reimbursement Of Leasehold Expenses Reimbursement of leasehold expenses Lessor Sales Type Lease Term Of Contract1 Lessor sales-type lease, Term Sales Type Lease Lease Receivable Carrying amount of lease receivables Sales Type Lease Unguaranteed Residual Asset Unguaranteed residual assets Operating Lease Lease Income Operating lease income Depreciation Rental equipment depreciation expense Lessee Disclosure [Abstract] Cash paid for amounts included in the measurement of lease liabilities. Cash Paid For Amounts Included In Measurement Of Lease Liabilities [Abstract] Cash paid for amounts included in the measurement of lease liabilities: Operating Lease Payments Operating cash flows from operating leases Operating Lease Liabilities Payments Due [Abstract] Lessee Operating Lease Liability Payments Remainder Of Fiscal Year Remainder of 2021 Lessee Operating Lease Liability Payments Due Next Twelve Months 2022 Lessee Operating Lease Liability Payments Due Year Two 2023 Lessee Operating Lease Liability Payments Due Year Three 2024 Lessee Operating Lease Liability Payments Due Year Four 2025 Lessee, operating lease, liability, payments, due after year four. Lessee Operating Lease Liability Payments Due After Year Four Thereafter Lessee Operating Lease Liability Payments Due Total lease payments Lessee Operating Lease Liability Undiscounted Excess Amount Less imputed interest Operating Lease Liability Present value of operating lease liabilities Sales Type Lease Lease Income [Abstract] Sales Type Lease Selling Profit Loss Profit recognized at commencement, net Sales Type Lease Lease Income Total sales-type lease income Sales Type And Direct Financing Leases Lease Receivable Fiscal Year Maturity [Abstract] Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Remainder Of Fiscal Year Remainder of 2021 Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months 2022 Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years 2023 Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years 2024 Sales-Type and Direct Financing Leases, Lease Receivable, to be Received, Year Four 2025 Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Total sales-type lease receivables Lessor Operating Lease Payments Fiscal Year Maturity [Abstract] Lessor Operating Lease Payments To Be Received Remainder Of Fiscal Year Remainder of 2021 Lessor Operating Lease Payments To Be Received Total lease receivables Amortization period of deferred sales commissions. Amortization Period Of Deferred Sales Commissions Amortization period of deferred commissions Amortization Of Deferred Sales Commissions Amortization expense Accrued Employee Benefits Current Compensation and related benefits Accrued Professional Fees Current Consulting and professional fees Accrued research and development expense current. Accrued Research And Development Expense Current Research and development expenses Accrued Marketing Costs Current Sales and marketing expenses Product Warranty Accrual Classified Current Warranty Taxes Payable Current Sales and other taxes payable Other Liabilities Current Other Revenue Performance Obligation Satisfied Over Time [Abstract] Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Table] Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Table] Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Start Date [Axis] Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] Revenue Remaining Performance Obligation Percentage Revenue, remaining performance obligation Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 Revenue, remaining performance obligation, expected timing of satisfaction, period Contract With Customer Liability Revenue Recognized Revenue recognized Number of customer accounted for more than 10% of revenues. Number Of Customer Accounted For More Than Ten Percentage Of Revenues Number of customer accounted for more than 10% of revenues Debt Instrument Carrying Amount Outstanding principal Accrued of final payment fee. Accrued Of Final Payment Fee Accrued final payment fees Debt Instrument Unamortized Discount Less debt discounts Long Term Debt Total debt, net Debt Instrument [Table] Debt Instrument [Table] Solar Capital Ltd. Solar Capital Ltd Fifty million credit facility. $50.0 Million Credit Facility Fifteen million credit facility. $15 Million Credit Facility Five million credit facility. $5.0 Million Credit Facility Debt Instrument [Axis] Debt Instrument, Name Term A Loan. Term A Loan Term B Loan. Term B Loan Term A loan and Term B loan. Term A Loan and Term B Loan Term C loan. Term C Loan Debt Instrument Redemption Period [Axis] Debt Instrument, Redemption, Period Prepaid on or Before First Anniversary of Funding Prepaid After First and on or Before Second Anniversary of Funding Prepaid After Second Anniversary of Funding Variable Rate [Axis] Variable Rate LIBOR Debt Instrument [Line Items] Debt Instrument [Line Items] Interest Expense Borrowings Interest expense Interest Expense Debt Cash interest expense Amortization Of Financing Costs Non-cash interest expense Line Of Credit Facility Maximum Borrowing Capacity Line of credit facility, maximum borrowing capacity Line Of Credit Facility Covenant Terms Line of credit facility, conversion to term loan, conditions Term loans number of tranches. Term Loans Number Of Tranches Term loans number of tranches Debt Instrument Basis Spread On Variable Rate1 Basis spread on variable rate Debt Instrument Interest Rate Stated Percentage Interest rate Line of credit facility interest-only period. Line Of Credit Facility Interest Only Period Interest-only period Line of credit facility interest only period extension upon achievement of revenues. Line Of Credit Facility Interest Only Period Extension Upon Achievement Of Revenues Interest-only period upon achievement of revenues Number of default events. Number Of Default Events Number of default events Line Of Credit Facility Borrowing Capacity Description Line of credit facility, conversion to term loan, conditions Line of credit facility increase in final payment fees percentage upon extension interest only periods. Line Of Credit Facility Increase In Final Payment Fees Percentage Upon Extension Interest Only Periods Increase in final payment fees percentage upon extension interest only periods Line of credit facility prepayment fees percentage. Line Of Credit Facility Prepayment Fees Percentage Prepayment fees percentage Trailing twelve month net product revenue first threshold limit to pay exit fee. Trailing Twelve Month Net Product Revenue First Threshold Limit To Pay Exit Fee Trailing twelve month net product revenue first threshold limit to pay exit fee Trailing twelve month net product revenue second threshold limit to pay exit fee. Trailing Twelve Month Net Product Revenue Second Threshold Limit To Pay Exit Fee Trailing twelve month net product revenue Second threshold limit to pay exit fee Percentage of exit fee for liquidation dissolution winding up or change of control. Percentage Of Exit Fee For Liquidation Dissolution Winding Up Or Change Of Control Percentage of exit fee for liquidation, dissolution, winding up or change of control of the Company Percentage of exit fee upon achievement of any trailing twelve month revenues. Percentage Of Exit Fee Upon Achievement Of Any Trailing Twelve Month Revenues Percentage of exit fee upon achievement of any trailing twelve month revenues Percentage of exit fee upon achievement of both trailing twelve month revenues. Percentage Of Exit Fee Upon Achievement Of Both Trailing Twelve Month Revenues Percentage of exit fee upon achievement of both trailing twelve month revenues Capped exit fee percentage on term loan principal amount. Capped Exit Fee Percentage On Term Loan Principal Amount Capped exit fee percentage on term loan principal amount Line Of Credit Facility Current Borrowing Capacity Line of credit facility, current borrowing capacity The floor interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding, including current maturities, which accrues interest at a rate subject to change from time to time. Long Term Debt Percentage Bearing Variable Interest Rate Floor Debt instrument, interest rate Debt Instrument Description Of Variable Rate Basis Debt instrument, description of variable rate basis Line of credit facility final payment fees percentage. Line Of Credit Facility Final Payment Fees Percentage Final payment fees percentage Debt instrument final payment fee. Debt Instrument Final Payment Fee Debt instrument, final payment fee Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net Combined debt discount and deferred issuance costs Extended period of interest only term loan. Extended Period of Interest Only Term Loan Extended period of interest only term loan Amendment fee payable. Amendment Fee Payable Amendment fee payable Share Price Closing price of common stock Public offering price Stockholders' deficit. Stockholders Deficit [Table] Stockholders Deficit [Table] Subsidiary Sale Of Stock [Axis] Sale of Stock Shares Available for Sales Under Employee Stock Purchase Plan Award Type [Axis] Award Type Stock Options Outstanding Restricted Stock Units Outstanding Shares Available for Grant Under Stock Incentive Plan Class Of Warrant Or Right [Axis] Class of Warrant or Right Common stock warrants. Common Stock Warrants Stockholders' deficit. Stockholders Deficit [Line Items] Stockholders Deficit [Line Items] Shares of common stock reserved for issuance. Shares Of Common Stock Reserved For Issuance [Abstract] Shares of common stock reserved for issuance for: Common Stock Capital Shares Reserved For Future Issuance Shares of common stock reserved for issuance Common stock shares issued and reserved for future issuance. Common Stock Shares Issued And Reserved For Future Issuance Total shares of common stock issued and reserved for issuance Class Of Warrant Or Right [Table] Class Of Warrant Or Right [Table] Exercise price range one. Exercise Price $19.55 Exercise price range two. Exercise Price $9.73. Exercise price range three. Exercise Price $9.73 Exercise price range four. Exercise Price. $9.73 Exercise price range five. Exercise Price. $9.73. Class Of Warrant Or Right [Line Items] Class Of Warrant Or Right [Line Items] Class Of Warrant Or Right Outstanding Warrants Outstanding Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 Exercise Price Debt Conversion Converted Instrument Expiration Or Due Date Month And Year Expiration Date 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 Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities, Name Non-Vested Performance Restricted Stock Units [Member]. Non-Vested Performance Restricted Stock Units 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 Amount Potentially dilutive securities outstanding excluded from diluted loss per share Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location Cost of Revenues Sales and Marketing General and Administrative Research and Development Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Allocated Share Based Compensation Expense Total Share-based compensation expenses Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Plan Name [Axis] Plan Name 2018 Equity incentive plan. 2018 Equity Incentive Plan 2020 Inducement incentive plan. 2020 Inducement Incentive Plan Vesting [Axis] Vesting First Anniversary of Date of Grant Represents information pertaining to restricted stock units and performance restricted stock units. Restricted Stock Units and Performance Restricted Stock Units Performance restricted stock units. PRSUs Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Number of shares authorized for issuance Share-based compensation arrangement by share-based payment award, number of additional shares authorized annual increase percentage. Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized Annual Increase Percentage Annual percentage increase in number of shares authorized for issuance Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period Maximum contractual term of stock options Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage Vesting percentage of stock options Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights Vesting terms of stock options The period of volume weighted average price is taken as base for computation of share price for vesting under share based payment arrangement. Trailing Day Period of Volume Weighted Average Price Weighted average price, number of days trailing Number of vesting installments. Number Of Vesting Installments Number of vesting installments Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant Shares available for future issuance Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options Unrecognized compensation cost related to non-vested stock options Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Non-vested awards not yet recognized weighted-average period for recognition Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value Intrinsic value of stock options exercised Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Share Based Awards Other Than Options Unrecognized compensation cost related to non-vested restricted stock Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value Fair value of restricted stock vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Vested Number of shares based on appreciation vest in equal installments Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate Expected volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Risk-free interest rate Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Number of Shares under Option, Outstanding, Ending balance Number of Shares under Option, Outstanding, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Number of Shares under Option, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Number of Shares under Option, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number Number of Shares under Option, Vested and expected to vest Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Weighted-average Exercise Price per Option, Outstanding, Ending balance Weighted-average Exercise Price per Option, Outstanding, Beginning balance Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Weighted-average Exercise Price per Option, Exercised Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price Weighted-average Exercise Price per Option, Forfeited Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Weighted-average Exercise Price per Option, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price Weighted-average Exercise Price per Option, Vested and expected to vest Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Weighted-average Remaining Contractual Life, Outstanding Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Weighted-average Remaining Contractual Life, Exercisable Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term1 Weighted-average Remaining Contractual Life, Vested and expected to vest Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Aggregate Intrinsic Value, Outstanding Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Aggregate Intrinsic Value, Exercisable Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value Aggregate Intrinsic Value, Vested and expected to vest Represents the information pertaining to performance based restricted stock units (PRSU's). Performance Restricted Stock Units Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Non-vested, Ending balance Non-vested, Beginning balance Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Forfeited Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Weighted-average Grant-date Fair Value, Non-vested, Ending balance Weighted-average Grant-date Fair Value, Non-vested, Beginning balance 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 Grant-date Fair Value, Granted 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 Grant-date Fair Value, Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Weighted-average Grant-date Fair Value, Forfeited Number Of Operating Segments Number of operating business segment Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Revenues Concentration Risk By Type [Axis] Concentration Risk Type Geographic Concentration Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Concentration Risk Percentage1 Percentage of Revenues Product category. Product Category NeuroStar Advanced Therapy System. NeuroStar Advanced Therapy System Treatment sessions. Treatment Sessions Other product. Other Schedule Of Restructuring And Related Costs [Table] Schedule Of Restructuring And Related Costs [Table] Restructuring Cost And Reserve [Axis] Type of Restructuring Reduction in force. Reduction in Force Termination Benefits Type Of Arrangement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Transition separation agreement. Transition Separation Agreement Restructuring Cost And Reserve [Line Items] Restructuring Cost And Reserve [Line Items] Restructuring And Related Cost Number Of Positions Eliminated Number of employees terminated Restructuring Charges Restructuring charges Payments For Restructuring Payments for restructuring