Class of Stock [Axis] Series B Convertible Preferred Stock [Member] Equity Components [Axis] Preferred Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Merger Agreement [Member] Ownership [Axis] Pre Merger Eos Inc [Member] Pre Merger Pulmatrix Inc [Member] Series A Convertible Preferred Stock [Member] Purchase Agreement [Member] Legal Entity [Axis] H.C.Wainwright and Co., LLC [Member] Sale Agreement [Member] Statistical Measurement [Axis] Maximum [Member] Sale of Stock [Axis] ATM Offering [Member] Award Type [Axis] Warrant One [Member] Warrant Two [Member] Warrant [Member] Derivative Instrument [Axis] Equity Option [Member] Antidilutive Securities [Axis] Options to Purchase Common Stock [Member] Warrants to Purchase Common Stock [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] Assets Current assets: Cash and cash equivalents Restricted cash Prepaid expenses and other current assets Total current assets Long-term restricted cash Total assets Liabilities and stockholders’ equity Current liabilities: Accounts payable Accrued expenses and other current liabilities Total current liabilities Total liabilities Commitments and contingencies (Note 9) Stockholders’ equity: Preferred stock, $0.0001 par value — 500,000 shares authorized; 1,100 shares designated as Series B Convertible Preferred Stock; no shares issued and outstanding at March 31, 2026, and December 31, 2025; 1,000 shares of Series B Convertible Preferred Stock issuable at March 31, 2026 Common stock, $0.0001 par value — 200,000,000 shares authorized; 3,652,285 shares issued and outstanding at March 31, 2026, and December 31, 2025 Additional paid-in capital Accumulated deficit Total stockholders’ equity Total liabilities and stockholders’ equity Statement [Table] Statement [Line Items] Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Preferred stock, shares issuable Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Operating expenses: Research and development General and administrative Total operating expenses Loss from operations Other income (expense): Interest income Fair value adjustment of warrants Other income (expense), net Total other income (expense), net Net loss Net loss per share attributable to common stockholders - basic Net loss per share attributable to common stockholders - diluted Weighted average common shares outstanding - basic Weighted average common shares outstanding - diluted Balance Balance, shares Proceeds received, net of issuance costs, for Series B Convertible Preferred Stock prior to issuance Stock-based compensation Net loss Balance Balance, shares Statement of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net loss to net cash used in operating activities: Stock-based compensation Fair value adjustment of warrants Changes in operating assets and liabilities: Accounts receivable Prepaid expenses and other current assets Other long-term assets Accounts payable Accrued expenses and other current liabilities Net cash used in operating activities Cash flows from financing activities: Proceeds from sale of Series B Convertible Preferred Stock Cash provided by financing activities Net decrease in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash — beginning of period Cash, cash equivalents and restricted cash — end of period Reconciliation of cash, cash equivalents and restricted cash to the consolidated balance sheets: Cash and cash equivalents Restricted cash Long-term restricted cash Supplemental disclosures of non-cash financing information: Preferred stock issuance costs not yet paid Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization Accounting Policies [Abstract] Summary of Significant Accounting Policies and Recent Accounting Standards Prepaid Expenses And Other Current Assets Prepaid Expenses and Other Current Assets Payables and Accruals [Abstract] Accrued Expenses and Other Current Liabilities Equity [Abstract] Preferred Stock Common Stock Warrants Warrants Share-Based Payment Arrangement [Abstract] Stock-based Compensation Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Income Tax Disclosure [Abstract] Income Taxes Earnings Per Share [Abstract] Net Loss Per Share Segment Reporting [Abstract] Segment Reporting Subsequent Events [Abstract] Subsequent Events Basis of Presentation Liquidity and going concern Use of Estimates Concentrations of Credit Risk Summary of Significant Accounting Policies Recent Accounting Pronouncements Schedule of Prepaid Expenses and Other Current Assets Schedule of Accrued Expenses and Other Current Liabilities Schedule of Warrants Outstanding and Exercisable Schedule of Stock Option Activity Schedule of Computation of Anti-Dilutive Weighted-Average Shares Outstanding Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] Proceeds from other equity Aggregate gross proceeds Minority interest ownership percentage by noncontrolling owners Minority interest ownership percentage by parent Restricted cash Schedule Of Prepaid Expenses And Other Current Assets Insurance Software and hosting costs Other Total prepaid expenses and other current assets Legal and patents Wages and incentives Other Total accrued expenses and other current liabilities Stock, Class of Stock [Table] Class of Stock [Line Items] Preferred stock, value Number of shares issued Gross proceeds Conversion price Dividend percentage Issuance costs Proceeds for working capital Proceeds from restricted cash Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Subsidiary, Sale of Stock [Line Items] Sale of stock, consideration received on transaction Description of stock transaction Public float Commission percentage Number of shares issued in transaction Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Warrants, Issue Date Warrants, Adjusted Exercise Price Warrants, Expiration Date Number of Shares Underlying Warrants Warrants outstanding Weighted-average exercise price Offsetting Assets [Table] Offsetting Assets [Line Items] Number of Options, Outstanding, Balance Weighted Average Exercise Price, Outstanding, Balance Aggregate Intrinsic Value, Balance Number of Options, Forfeited or expired Weighted Average Exercise Price, Forfeited or expired Number of Options, Outstanding, Balance Weighted Average Exercise Price, Outstanding, Balance Weighted Average Remaining Contractual Term (Years), Outstanding Aggregate Intrinsic Value, Balance Number of Options, Exercisable Weighted Average Exercise Price, Outstanding, Exercisable Weighted Average Remaining Contractual Term (Years), Exercisable Aggregate Intrinsic Value, Exercisable Stock-based compensation expense Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Weighted average shares outstanding Series A Convertible Preferred Stock [Member] Series B Convertible Preferred Stock [Member] Preferred stock issuance costs not yet paid. Significant Accounting [Policy Text Block] Disclosure Of Prepaid Expenses And Other Current Assets [Text Block] Prepaid software and hosting costs. Merger Agreement [Member] Purchase Agreement [Member] Proceeds for working capital. H.C.Wainwright and Co., LLC [Member]. Sale Agreement [Member] Entities public float. ATM Offering [Member] Commission percentage. Disclosure of warrants [Text Block] Warrant One [Member] Warrant Two [Member] Options to Purchase Common Stock [Member] Warrants to Purchase Common Stock [Member] Pulmatrix Inc [Member] Pre Merger Pulmatrix Inc [Member] Pre Merger Eos Inc [Member] Assets, Current Assets [Default Label] Liabilities, Current Liabilities Equity, Attributable to Parent Liabilities and Equity Operating Expenses Operating Income (Loss) Nonoperating Income (Expense) Shares, Outstanding Increase (Decrease) in Accounts Receivable Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Other Noncurrent Assets Increase (Decrease) in Accounts Payable Increase (Decrease) in Accrued Liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Disclosure of warrants [Text Block] Restricted Cash Other Accrued Liabilities, Current Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value