Title of Individual [Domain] Title of Individual [Axis] Warrants issued. Old Talkspace Warrants Old Talkspace's Old Talkspace's Two thousand and twenty one incentive award plan. Net loss per share (1): Common stock, conversion ratio Stockholders' Equity Note, Stock Split, Conversion Ratio Exercise of stock options Common shares reserved for issuance Summary of Stock Option Activity under 2014 Plan Two thousand and twenty one employee stock purchase plan. Research and Development, net Public Warrants Private Placement Warrants Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Warrant issuance fees Fees Related To Issuance Of Warrant Fees related to issuance of warrant. Debt issuance cost Debt Issuance Costs, Net, Total Debt Issuance Costs, Net The exchange rate per share of the conversion feature embedded in the business combination. Research and development, net Acquired in Business Combination Business Combination Acquired Warrants Fair Value Business Combination Acquired Warrants Fair Value. Issued in connection with closure of the Forward Purchase Agreement Warrants Issued In Closure Of Forward Purchase Agreement. Payments related to repurchase of shares in Business Combination Payments for Repurchase of Common Stock Proceeds from conversion of share into unvested options excecisable Proceeds From Conversion of Shares into Unvested Options Excecisable Proceeds From Conversion of Shares into Unvested Options Excecisable Cash flows from financing activities: Cash flows from investing activities: Cash flows from operating activities: STOCKHOLDERS' DEFICIT: Total current liabilities CURRENT LIABILITIES: Total assets Total current assets CURRENT ASSETS: Operating loss Cost of Revenues Revenues Basic and diluted net loss per share Share-based Payment Arrangement, Plan Modification, Incremental Cost Class of warrant or right redemption threshold consecutive trading days Class of Warrant or Right Redemption Threshold Consecutive Trading Days Class of Warrant or Right, Redemption, Threshold Consecutive Trading Days. Class of warrant or right minimum notice period for redemption Class of Warrant or Right Minimum Notice Period For Redemption Class of Warrant or Right, Minimum Notice Period For Redemption. Class of warrant or right, threshold trading days for exercise Class of Warrant or Right Threshold Number Of Days From Business Combination For Exercise Class of Warrant or Right, Threshold Number Of Days From Business Combination For Exercise. Redemption trigger share price Redemption Trigger Share Price Redemption Trigger Share Price. Share Price Warrants and rights outstanding, expiration period Warrants And Rights Outstanding Expiration Period Expiration period of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable period or upon event certain to occur, in 'PnYnMnDTnHnMnS' format. Series Seed Preferred Stock Series Seed-2 Preferred Stock Series Seed-1 Preferred Stock Maximum number of shares granted Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Maximum increase in annual amount number of common stock shares outstanding percentage Maximum number of shares to be issued in connection with stock option exercises under plan Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Sales and Marketing Seed 1 preferred stock Common stock issued related to exercise of warrants, value Common stock issued related to exercise of warrants, shares Maximum increase In Annual Amount Number Of Common Stock Shares Outstanding Percentage Maximum increase In Annual Amount Number Of Common Stock Shares Outstanding Percentage Warrant issuance cost and change in fair value Warrant Issuance Cost And Change In Fair Value Warrant issuance cost and change in fair value. Underwritten public offering of convertible preferred stock Proceeds from Issuance of Convertible Preferred Stock Old Talkspace Public Warrants Public Warrants [Member] Public Warrants. Purchase of common stock Purchase Of Common Stock Purchase of common stock. Financial expense (income), net Stock option award granted Repayment of borrowings Director Director [Member] Payment of debt issuance cost Payments of Debt Issuance Costs Common stock of 0.0001 par value -- Authorized: 1,000,000,000 and 129,397,278 shares at June 30, 2021 and December 31, 2020, respectively; Issued and outstanding: 152,255,736 and 13,413,431 shares at June 30, 2021 and December 31, 2020, respectively (1) Warrant issuance cost and change in fair value Amortization of debt issuance cost Amortization of Debt Issuance Costs Warrant liabilities Warrant Liabilities Non-Current Warrant liabilities non-current. Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Supplemental cash flow data: Supplemental Cash Flow Information [Abstract] Warrants issued Converted into equity Equity, Fair Value Adjustment Percentage Volatilities Of Private Placement Warrant Estimated Before The Expected Business Combination Percentage Volatilities Of Private Placement Warrant Estimated Before The Expected Business Combination. Stock Issued During Period, Shares, Warrants Number of shares of stock issued during the period pursuant to warrants. Stock Issued During Period, Value, Warrants Value of stock issued pursuant to warrants during the period. Additional paid-in capital (1) Convertible preferred stock (Series Seed, Seed-1, Seed-2, A, B, C and D) of 0.0001 par value -- Authorized: 100,000,000 and 95,709,146 shares at June 30, 2021 and December 31, 2020, respectively; Issued and outstanding: 0 and 94,582,550 shares at June 30, 2021 and December 31, 2021, respectively (1) Number of common stock shares outstanding percentage Number of Common Stock Shares Outstanding Percentage Number of Common Stock Shares Outstanding Percentage Maximum [Member] 2021 Employee Stock Purchase Plan Two Thousand And Twenty One Employee Stock Purchase Plan Total liabilities Warrant liabilities Other long-term liabilities Liabilities Other Liabilities, Noncurrent, Total Other Liabilities, Noncurrent Other long-term assets Other Assets, Noncurrent, Total Other Assets, Noncurrent Conversion of preferred stock to common stock Proceeds from borrowings Proceeds from Issuance of Debt Repayment of borrowings Repayments of Debt Change in cash and cash equivalents Net cash used in operating activities Increase (decrease) in accounts payable 2021 Incentive Award Plan Two Thousand And Twenty One Incentive Award Plan Redemption amount from forward purchase Redemption Amount From Forward Purchase Redemption amount from forward purchase Forward purchase amount Forward Purchase Amount Forward purchase amount Forward purchase agreement Forward Contracts [Member] Forward purchase unit Forward Purchase Unit Forward purchase unit Number of warrants outstanding HEC Master Fund LP HEC Master Fund LP [Member] Redemption of stock Redemption of Stock Redemption of Stock Old Talkspace [Member] Old talkspace member Common stock Preferred stock Preferred Stock [Member] Seed Preferred Stock [Member] Seed preferred stock member B preferred stock Preferred Class B [Member] A preferred stock Preferred Class A [Member] Series C preferred stock Series C Preferred Stock [Member] Series A preferred stock Series A Preferred Stock [Member] Series B preferred stock Series D preferred stock Series B Preferred Stock [Member] Conversion of stock, conversion rate Conversion Of Stock, Conversion Rate Conversion of stock, shares options Conversion of Stock, Shares Options The number of new shares options in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Conversion of stock, shares issued Conversion of Stock, Shares Issued Conversion of stock, shares converted Conversion of Stock, Shares Converted Conversion of stock, amount converted Conversion of Stock, Amount Converted Total Revenue from Contract with Customer, Excluding Assessed Tax Increase in deferred revenues Series D Series C Series B Series A Seed-2 Seed-1 Seed Warrants Issued In Closure Of Forward Purchase Agreement Shares issued in PIPE Financing Groop City Area Code Local Phone Number Document Transition Report Minimum Percentage Approval of conversion by stock holders in Deemed Liquidation Event Assets Assets, Fair Value Disclosure Share Outstanding Shares Issued Temporary Equity, Shares Issued Schedule of Elements of Business Combination to the Condensed Consolidated Statement of Cash Flows and the Condensed Consolidated Statement of Changes in Stockholders Deficit Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Number of Shares of Common Stock Issued Immediately Following the Consummation of the Business Combination Schedule of Business Acquisitions by Acquisition, Equity Interest Issued or Issuable [Table Text Block] Cash Date of Merger Agreement Business Acquisition, Date of Acquisition Agreement Subscription agreement [Member]. Subscription Agreement [Member] Subscription Agreement Conversion of stock, description Conversion of Stock, Description Summary of Stock-Based Compensation Expense Share-based Payment Arrangement, Cost by Plan [Table Text Block] Warrant to Purchase Series D Convertible Preferred Stock Warrant Employee Stock Option Commercial Consumer Convertible Preferred Stock Total unrecognized compensation cost non-vested options to be recognized, period Total unrecognized compensation cost, non-vested options Share-based compensation, contractual terms Share-based compensation, vesting period Award Type [Domain] Award Type [Axis] Shares issued in PIPE Financing Recently adopted accounting standards Use of estimates Basis of presentation Emerging growth company Emerging Growth Company [Policy Text Block] Disclosure of accounting policy for emerging growth company. Business Combination Debt instrument, withdrawn period Common stock, outstanding prior to Business Combination Entity Common Stock, Shares Outstanding Debt Instrument, Drawn Period Debt Instrument, Drawn Period Business combination, Number of shares Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Prime Rate Revolving Credit Facility Term Loan JPMorgan Chase Bank, N.A Credit Agreement Debt Instrument [Line Items] Schedule of Long-term Debt Instruments [Table] Converted stock, Par Value Converted stock, Par Value Converted stock, Par Value Business Acquisition, Acquiree [Domain] Business Acquisition [Axis] Number of options, Exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Significant Accounting Policies Significant Accounting Policies [Text Block] Schedule of Disaggregation of Revenue by Revenue Source Revenues fom sales to unaffiliated customers: Revenue From Sales To Unaffiliated Customers [Abstract] Revenue from sales to unaffiliated customers abstract. Customer [Domain] Customer [Axis] John Pierpont Morgan Chase Bank, N.A. [Member] John Pierpont Morgan Chase Bank, N.A. [Member] Debt Instrument, Fee Amount Warrants and Rights Outstanding, Maturity Date Proceeds from Issuance or Sale of Equity, Total Proceeds from Issuance or Sale of Equity Debt Instrument, Unused Borrowing Capacity, Amount Prime Rate [Member] Variable Rate [Domain] Variable Rate [Axis] Debt Instrument, Basis Spread on Variable Rate Percentage of minimum net revenue required on annual projections Percentage Of Minimum Net Revenue Required On Annual Projections Percentage of minimum net revenue required on annual projections. Credit And Security Agreement [Member] Credit and security agreement member. Groop Internet Platform Inc. [Member] Groop Internet Platform Inc. [Member] Debt Instrument, Payment Terms Commitments and Contingent Liabilities Warrant To Purchase Series D Convertible Preferred Stock [Member] Warrant To Purchase Series D Convertible Preferred Stock [Member] Antidilutive securities excluded from the calculation of diluted loss per share Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted Schedule of Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders Net Loss Per Share Debt instrument, face amount Underwritten public offering Borrowing Arrangements Debt Disclosure [Text Block] 2014 Global Share Incentive Plan The Option Plan General and Administrative Clinical Operations Share-Based Compensation Number of operating segments Number of Operating Segments Preferred stock conversion, Value Stock Issued During Period, Value, Conversion of Convertible Securities Preferred stock conversion, Share Stock Issued During Period, Shares, Conversion of Convertible Securities Business acquisition, purchase price as intangible asset Business acquisition, purchase price in cash Payments to Acquire Businesses, Gross Common Stock and Preferred D Shares [Member] Common stock and preferred D shares member Commercial [Member] Commercial member. Consumer [Member] Consumer member. Preferred D stock Series D Preferred Stock [Member] Document Period End Date Entity Address, Address Line One Entity Incorporation, State or Country Code Entity File Number Entity Tax Identification Number Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity Shell Company Entity Interactive Data Current Entity Current Reporting Status Proceeds from reverse capitalization, net of transaction costs Proceeds from Reverse Capitalization, Net of Transaction Costs Proceeds from reverse capitalization, net of transaction costs. Cash and cash equivalents at the end of the period Cash and cash equivalents at the beginning of the period Total liabilities, convertible preferred stock and stockholders' deficit Total stockholders' deficit Decrease in accrued expenses and other current liabilities LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFICIT Cash and cash equivalents Taxes on Income Weighted average number of common shares used in computing basic and diluted net loss per share Upfront fee Debt instrument, fee amount Warrants, exercise price Warrants, maturity date Proceeds from Issuance of additional equity interests Debt instrument, unused borrowing capacity, amount Debt instrument, basis spread on variable rate Line of credit facility, withdrawn period Debt instrument, payment terms Common stock, outstanding prior to Business Combination Business Acquisition [Line Items] Schedule of Business Acquisitions, by Acquisition [Table] Selling and Marketing Expense, Total Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total General and Administrative Expense, Total Business Combination Disclosure [Text Block] Acquisition Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Share-based Payment Arrangement [Text Block] Earnings Per Share [Text Block] Debt Disclosure [Abstract] Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Summary of Income Tax Proivision General and Administrative Expense General and administrative expenses General and administrative Income Tax Expense (Benefit) Taxes on income Income tax provision Provision for income taxes Fair Value Adjustment of Warrants Change in fair value of Warrants Change in fair value Weighted Average Number of Shares Outstanding, Basic and Diluted Cost of Revenue Research and Development Expense Selling and Marketing Expense Sales and marketing Temporary Equity, Stock Issued During Period, Value, New Issues Temporary equity stock issued during period s new issues Class A Common stock subject to possible redemption , value Adjustments to Additional Paid in Capital, Warrant Issued Issuance of warrants Adjustments to additional paid in capital warrant issued Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Additional Paid-in Capital [Member] Additional Paid-in Capital Convertible Preferred Stock [Member] Revenue Recognition Revenue from Contract with Customer [Text Block] Revenue from Contract with Customer [Abstract] Entity Bankruptcy Proceedings, Reporting Current Cash and Cash Equivalents, Period Increase (Decrease) Entity Address, State or Province Entity Address, City or Town Entity Address, Address Line Two Entity Address, Postal Zip Code Security Exchange Name Trading Symbol Title of 12(b) Security Document Quarterly Report Sale of Stock [Domain] Sale of Stock [Domain] Sale of Stock [Domain] Description Of Organisation And Business Operation [Line Items] Description Of Organisation And Business Operation [Line Items] Shares Issued, Price Per Share Initial public offering, price per unit Share issue price Proceeds from Issuance Initial Public Offering Transaction cost. Transaction Cost Transaction cost Proceeds from issuance of warrants Proceeds from issuance of warrants Temporary Equity Disclosure [Abstract] Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss Gross Holding Losses Fair Value Hierarchy and NAV [Domain] Measurement Frequency [Domain] Statistical Measurement [Axis] Seed two convertible preferred stock. Seed Two Convertible Preferred Stock [Member] Series A convertible preferred stock. Series A Convertible Preferred Stock [Member] Temporary Equity, Shares Authorized Shares Authorized Class of Stock [Line Items] Minimum percentage of firm commitment underwritten public offering approvel by stock holders. Minimum Percentage of Firm Commitment Underwritten Public Offering Approvel by Stock holders Minimum percentage of firm commitment underwritten public offering approvel by stock holders Temporary equity shares noncumulative dividend rate percentage. Temporary Equity Shares Noncumulative Dividend Rate Percentage Dividend rate percentage Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of options, Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Number of options, Exercisable at the end of the period Research and Development Expense [Member] Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Warrants and Rights Note Disclosure [Abstract] Initial measurement on warrants and rights outstanding liability. Initial Measurement On Warrants And Rights Outstanding Liability Initial measurement on June 11, 2020 Credit Facility [Axis] Revolving Credit Facility [Member] Accounts Payable, Current, Total Increase (Decrease) in Accounts Payable, Total Research and Development Expense, Total Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common Stock, Value, Issued, Total Cost of Revenue, Total Entity Small Business Statement [Table] Statement [Table] Statement [Line Items] Franchise and income tax expense Statement [Line Items] Assets Held-in-trust, Noncurrent Cash and marketable securities held in trust account Marketable securities held in trust account Assets, Current [Abstract] Liabilities, Current [Abstract] Common Stock, Value, Issued Class A Common Stock Redeemable Noncontrolling Interest, Equity, Preferred, Carrying Amount Net Carrying Value Common Stock, Shares, Outstanding Ending balance, shares Beginning balance, shares Common stock, shares outstanding Proceeds from Stock Options Exercised Proceeds from exercise of stock options Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Intangible Assets, Net (Excluding Goodwill), Total Other Cost and Expense, Operating, Total Accounts Receivable, after Allowance for Credit Loss, Current, Total Cash and Cash Equivalents, at Carrying Value, Total Deferred Costs, Noncurrent, Total Debt Securities, Held-to-maturity, Total APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total Goodwill, Ending Balance Goodwill, Beginning Balance Goodwill, Total Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total Preferred Stock, Shares Issued, Total Statistical Measurement [Axis] Statistical Measurement [Axis] Disaggregation of Revenue [Line Items] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] US Treasury Securities [Member] US Treasury Securities Assets, Fair Value Disclosure [Abstract] Assets: Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Depreciation, Depletion and Amortization, Total Other Comprehensive Income (Loss), Net of Tax, Total Earnings Per Share, Basic and Diluted, Total Debt Securities, Held-to-maturity, Fair Value, Total Cover [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class of Stock [Domain] Document Information [Line Items] Document Type Amendment Flag Entity Registrant Name Entity Filer Category Entity Emerging Growth Company Entity Central Index Key Entity Ex Transition Period Statement of Financial Position [Abstract] Assets [Abstract] ASSETS Assets Assets, Current Cash and Cash Equivalents, at Carrying Value Cash Accounts Receivable, after Allowance for Credit Loss, Current Accounts receivable Other Assets, Current Other current assets Property, Plant and Equipment, Net Property and equipment, net Deferred Costs, Noncurrent Deferred issuance cost Intangible Assets, Net (Excluding Goodwill) Intangible assets, net Goodwill Goodwill Liabilities and Equity [Abstract] Liabilities, Current Accounts Payable, Current Accounts payable Contract with Customer, Liability, Current Deferred revenues Accrued Liabilities And Other Liabilities Current. Accrued Liabilities And Other Liabilities Current Accrued expenses and other current liabilities Liabilities and Equity Stockholders' Equity Attributable to Parent [Abstract] Retained Earnings (Accumulated Deficit) Accumulated deficit Additional Paid in Capital Retained Earnings (Accumulated Deficit), Ending Balance Retained Earnings (Accumulated Deficit), Beginning Balance Retained Earnings (Accumulated Deficit), Total Payments to Acquire Property, Plant, and Equipment, Total Share-based Payment Arrangement, Noncash Expense, Total Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total Stockholders' Equity Attributable to Parent Ending balance, value Beginning balance, value Temporary Equity, Carrying Amount, Attributable to Parent Ending balance, value Beginning balance, value Common stock subject to possible redemption Common Stock Subject to Possible Redemption Warrants and Rights Outstanding Fair value as of ending Fair value as of beginning Warrant liability Temporary Equity [Abstract] CONVERTIBLE PREFERRED STOCK: Common Class A [Member] Common Class A Common Class A Legal Entity [Axis] Entity [Domain] Convertible Preferred Stock Series Seed Seed One Seed Two A,B,C And D. Convertible Preferred Stock Series Seed Seed One Seed Two ABC And D [Member] Convertible Preferred Stock Series Seed Seed One Seed Two A,B,C And D Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Issued Preferred stock, shares issued Preferred Stock, Par or Stated Value Per Share Preferred stock, par value Preferred Stock, Par or stated value per share Temporary Equity, Shares Outstanding Ending balance, shares Beginning balance, shares Class A common stock, subject to possible redemption, shares Common Stock, Shares, Issued Common stock, shares issued Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Description Of Organisation And Business Operation [Abstract] Other Cost and Expense, Operating Clinical operations Interest and debt expense income. Interest And Debt Expense Income Other Comprehensive Income (Loss), Net of Tax Other comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Earnings Per Share [Abstract] Statement of Stockholders' Equity [Abstract] Temporary equity stock issued during period shares new issues. Temporary Equity Stock Issued During Period Shares New Issues Class A Common stock subject to possible redemption , shares Temporary equity stock issued during period shares new issues Stock Issued During Period, Value, New Issues Sale of 41,400,000 Units, net of underwriting discounts, warrant liabilities and other offering costs , value Stock Issued During Period, Shares, New Issues Sale of 41,400,000 Units, net of underwriting discounts, warrant liabilities and other offering costs , shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Number of options, Exercised Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options , Value APIC, Share-based Payment Arrangement, Increase for Cost Recognition Stock-based compensation Retained Earnings [Member] Accumulated Deficit Common Stock [Member] Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Net Cash Provided by (Used in) Operating Activities 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: Minimum [Member] Minimum Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling and Marketing Expense [Member] Disaggregation of Revenue [Table] Common Stock, Shares, Issued, Total Depreciation, Depletion and Amortization Depreciation and amortization Share-based Payment Arrangement, Noncash Expense Stock-based compensation Stock-based compensation expense Increase (Decrease) in Accounts Receivable Increase in accounts receivable Increase (Decrease) in Other Current Assets Increase in other current assets Increase (Decrease) in Accounts Payable Increase (Decrease) in Deferred Charges Increase in deferred revenues Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Net Cash Provided by (Used in) Investing Activities [Abstract] Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Noncash Investing and Financing Items [Abstract] Non-Cash financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Sale of Stock, Consideration Received on Transaction Proceeds from sale of Units, net of underwriting discounts paid Sale of stock, consideration received on transaction Class of Warrant or Right, Exercise Price of Warrants or Rights Class of warrant, exercise price Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Class of Warrant or Right [Line Items] Class of Warrant or Right [Line Items] Class of Warrant or Right, Outstanding Warrants outstanding Warrant liability fair value disclosure. Warrant Liability Fair Value Disclosure Warrant liability fair value disclosure Common Stock, Capital Shares Reserved for Future Issuance Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award Two thousand and fourteen global share incentive plan the option plan. Two Thousand And Fourteen Global Share Incentive Plan The Option Plan [Member] Share-based Payment Arrangement, Option [Member] Earnings Per Share, Basic and Diluted [Abstract] Numerator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Denominator: Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value Measurements New Accounting Pronouncements, Policy [Policy Text Block] Recently issued accounting pronouncements not yet adopted Basis of Presentation and Significant Accounting Policies [Text Block] Use of Estimates, Policy [Policy Text Block] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Summary of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders Disaggregation of Revenue [Table Text Block] Summary of Disaggregation of Revenues by Revenue Source Share-based Payment Arrangement, Option, Activity [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Summary of Deferred Tax Assets Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Summary of Reconciliation of Effective Tax Rate and Statutory Income Tax Rate Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Summary of Income Before Income Taxes 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 authorized Operating Expenses Total operating expenses Other income (expenses), net Earnings Per Share, Basic and Diluted Basic and diluted net loss per share, Class B Net Income (Loss) Attributable to Parent Net income (loss) Net income (loss) Net loss Net loss Net loss Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income (loss) before provision for income taxes Loss before income taxes Loss before taxes on income Operating Income (Loss) Loss from operations Operating loss Statement of Comprehensive Income [Abstract] Gross Profit Gross Profit Operating Expenses [Abstract] Operating expenses: Investment Type [Axis] Investments [Domain] Money Market Funds [Member] Money Market Funds Investment income, interest Warrants and rights outstanding fair value disclosure. Warrant Liability FPA liability fair value disclosure. FPA Liability Fair Value Disclosure FPA Liability Marketable securities held in trust fair value disclosure. Marketable Securities Held In Trust Fair Value Disclosure Marketable securities held in Trust Account Fair Value, Inputs, Level 3 [Member] Debt Instrument, Face Amount Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Temporary Equity, by Class of Stock [Table] Seed convertible preferred stock. Seed Convertible Preferred Stock [Member] Seed one convertible preferred stock. Seed One Convertible Preferred Stock [Member] Series B convertible preferred stock. Series B Convertible Preferred Stock [Member] Series C convertible preferred stock. Series C Convertible Preferred Stock [Member] Series D Convertible Preferred Stock [Member]. Series D Convertible Preferred Stock [Member] Series D Convertible Preferred Stock Temporary Equity [Line Items] Temporary equity shares issue price. Temporary Equity Shares Issue Price Issue Price Temporary Equity, Liquidation Preference Aggregate Liquidation Preference Schedule of Stock by Class [Table] Temporary Equity, Par or Stated Value Per Share Temporary equity par or stated value per share Net intangible assets for Business combination Description of organisation and business operation disclosure text block. Description Of Organisation And Business Operation Disclosure [Text Block] Description of organization and business operation disclosure Accounting Policies [Abstract] Stockholders' Equity Note [Abstract] Business Combinations [Abstract] Commitments and Contingencies Disclosure [Text Block] Convertible preferred stock and stockholders deficit. Convertible Preferred Stock And Stockholders Deficit [Text Block] Convertible Preferred Stock Share-based Payment Arrangement [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Income Tax Disclosure [Text Block] Payments of Stock Issuance Costs Payments of offering costs Payment of stock issuance costs Payment of offering costs Temporary Equity [Table Text Block] Summary of Convertible preferred stock Debt Securities, Held-to-maturity [Table Text Block] Summary of Gross Holding Losses and Fair Value of Held-to-Maturity Securities Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Summary of Fair Value Measurements Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Summary of warrants Business Combination, Consideration Transferred, Other Total consideration Description Of Organisation And Business Operation [Table] Description Of Organisation And Business Operation [Table] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Axis] IPO [Member] IPO IPO Over-Allotment Option [Member] Over-Allotment Option Over-Allotment Option Private Placement [Member] Private Placement Expense Related to Distribution or Servicing and Underwriting Fees Underwriting fees Class Of Warrants Or Rights Issue Price. Class Of Warrants Or Rights Issue Price Issue price of warrants Interest to pay dissolution expenses. Interest To Pay Dissolution Expenses Interest to pay dissolution expenses Class of Warrant or Right, Issued During The Period. Class of warrant or right issued during the period Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3 Fair value of liabilities transferred out of level 3 Percentage volatilities of public warrant estimated before the expected business combination. Percentage Volatilities Of Public Warrant Estimated Before The Expected Business Combination Percentage volatilities of public warrant estimated before the expected business combination Percentage volatilities of public warrant estimated after the expected business combination. Percentage Volatilities Of Public Warrant Estimated After The Expected Business Combination Percentage volatilities of public warrant estimated after the expected business combination Public Warrant. Public Warrant [Member] Private placement warrant. Private Placement Warrant [Member] Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Debt Securities, Held-to-maturity [Table] Schedule of Held-to-maturity Securities [Line Items] Debt Securities, Held-to-maturity Amortized Cost Debt Securities, Held-to-maturity, Fair Value Fair Value Fair Value Hierarchy and NAV [Axis] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 1 [Member] Debt Securities, Held-to-maturity, Maturity, Date Held-To-Maturity Fair Value, by Balance Sheet Grouping [Table] Measurement Frequency [Axis] Fair Value, Recurring [Member] Fair Value, Recurring [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Liabilities, Fair Value Disclosure [Abstract] Liabilities: Class of warrant or right issued during the period Statistical Measurement [Domain] Statistical Measurement [Domain] Statistical Measurement [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Warrant [Member] Warrant [Member] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Sale of Stock, Number of Shares Issued in Transaction Sale of Stock, number of shares issued in transaction Sale of Stock, Consideration Received Per Transaction Sale of stock consideration received per transaction Sale of Stock, Price Per Share Sale of stock, price per share Sale of stock, price per share Temporary Equity, Liquidation Preference Per Share Temporary equity liquidation preference per share Minimum Percentage Aprrovel of conversion by stock holders in Deemed Liquidation Event. Minimum Percentage Aprrovel of Conversion by Stock Holders During Deemed Liquidation Event Number of directors entitled to elect by Class of stock shareholders. Number of Directors Entitled to Elect by Class of Stock Shareholders Number of directors entitled to elect by Class of stock shareholders Plan Name [Axis] Plan Name [Domain] Secondary market transactions. Secondary Market Transactions [Member] Operating Expense [Member] Event. Event [Axis] Event. Event [Domain] Automatic conversion of preferred stock. Automatic Conversion Of Preferred Stock [Member] Share-based Payment Arrangement, Disclosure [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of options, Outstanding at the end of the period Number of options, Outstanding at the beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Outstanding at the end of the period Weighted average exercise price, Outstanding at the beginning of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Outstanding Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted average exercise price, Granted Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Number of options, Forfeited Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted average exercise price, Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average exercise price, Exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Weighted average remaining contractual term (in years) Exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Aggregate intrinsic value, Exercisable at the end of the period Share-based Payment Arrangement, Expensed and Capitalized, Amount [Abstract] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table] Clinical Operations [Member] Clinical Operations [Member] General and Administrative Expense [Member] Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] Share-based Payment Arrangement, Expense Share based compensation expense Fair Value, Inputs, Level 3 [Member] Class of Warrant or Right [Table] Financial Instrument [Axis] Financial Instruments [Domain] FPA liability. FPA Liability [Member] FPA Liability [Member] Line of Credit Facility, Maximum Borrowing Capacity Line of credit facility, maximum borrowing capacity Line of credit facility withdrawn period. Line Of Credit Facility Withdrawn Period Debt Instrument, Term Debt instrument, term Debt instrument, interest rate, stated percentage Debt instrument, interest rate, stated percentage Class of Warrant or Right, Number of Securities Called by Warrants or Rights Class of warrant or right, number of securities called by warrants or rights Credit Facility [Domain] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Term loan. Term Loan [Member]