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Cancelled/forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Preferred Stock Preferred Stock [Member] Inventories Increase (Decrease) in Inventories Weighted average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Exercise Price Range Exercise Price Range [Axis] Segment Reporting [Table] Segment Reporting [Table] Number of shares available for grant (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Enterprise hardware and software Computer Equipment [Member] Sale of Stock Sale of Stock [Axis] Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table] Employee Stock Ownership Plan (ESOP) [Table] Weighted Average Remaining Contractual Term (in years) and Aggregate Intrinsic Value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract] Schedule of Operating Leases Lease, Cost [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Schedule of Financial Assets and Liabilities Measured at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating income Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Schedule of Warrant Activity Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Buildings and land Land, Buildings and Improvements [Member] Weighted Average Exercise Price Per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Number of orphan drug designations granted by FDA Number of Orphan Drug Designations Granted by US Food and Drug Administration Number of Orphan Drug Designations Granted by US Food and Drug Administration Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Queensbury Lease Queensbury Lease [Member] Queensbury Lease Finished goods Finished goods Inventory, Finished Goods, Gross Clinical expenses Accrued Clinical Expenses Current Accrued Clinical Expenses Current Short-term investments Estimated Fair Value Debt Securities, Available-for-Sale, Current Equity Components Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service Product and Service [Domain] Schedule of Information Related to Stock Warrants Outstanding and Exercisable Schedule Of Information Related To Stock Warrants Outstanding And Exercisable [Table Text Block] Schedule of Information Related to Stock Warrants Outstanding and Exercisable. Class of Stock [Line Items] Class of Stock [Line Items] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Entity Interactive Data Current Entity Interactive Data Current Medac Medac [Member] Medac. Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Entity Small Business Entity Small Business medac Other Liabilities, Future Sales, Current Other Liabilities, Future Sales, Current Total comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Year ended December 31, 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Lease Arrangement [Domain] Lease Arrangement [Domain] Lease Arrangement [Domain] Customer 3 Customer Three [Member] Customer Three Termination Date Trading Arrangement Termination Date Other Commitments [Axis] Other Commitments [Axis] Property Plant And Equipment [Line Items] Property, Plant, and Equipment [Line Items] Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Fair Value Disclosure of Asset and Liability Not Measured at Fair Value [Table] Subsequent Events [Abstract] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Change due to liability payment Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Clinical trial expenses Prepaid Clinical Trial Expenses Current Prepaid clinical trial expenses current. Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Clinical trial, number of sites (more than) Clinical Trial, Number Of Sites Clinical Trial, Number Of Sites Document Type Document Type 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] Inventory held at hospitals and treatment centers Inventory Held At Hospitals And Treatment Centers [Member] Inventory Held At Hospitals And Treatment Centers Accrued expenses Accrued expenses Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Total Cash and Cash Equivalents: Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation [Abstract] Aggregate intrinsic value, exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase program, remaining authorized, amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Work-in-process Inventory, Work in Process, Gross Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name General Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (see Note 12) Commitments and Contingencies Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Property, plant and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Inventory Accrued Inventory, Current Accrued Inventory, Current Executive Category: Executive Category [Axis] Leaseholds Leaseholds and Leasehold Improvements [Member] Counterparty Name [Axis] Counterparty Name [Axis] Expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Furniture Furniture and Fixtures [Member] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Weighted average remaining contractual term (in years), exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] Employee Stock Ownership Plan (ESOP) Disclosures [Line Items] Inventories Total inventory Inventory, Net Award Type Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Outstanding number of warrants (in shares) Class of Warrant or Right, Outstanding Year ended December 31, 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Fair Value Measurements Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] U.S. government agency bonds US Government Agencies Debt Securities [Member] Expected terms (years) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term Lease term Lessee, Operating Lease, Term of Contract PEO Name PEO Name Geographical Geographical [Axis] Agreements relating to clinical trial support Agreements Relating to Clinical Trial Support [Member] Agreements Relating to Clinical Trial Support Long-Lived Asset, Class Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Measurement input (in percent) Business Combination, Contingent Consideration, Liability, Measurement Input HEPZATO KIT, Melphalan HEPZATO KIT, Melphalan [Member] HEPZATO KIT, Melphalan Liability Class [Axis] Liability Class [Axis] Lessee Lease Description [Table] Lessee, Lease, Description [Table] Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Cash cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Ireland IRELAND Professional fees Accrued Professional Fees, Current Other Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Weighted average pre-funded warrants (in shares) Weighted Average Number Of Shares Pre Funded Warrants Weighted average number of shares pre funded warrants 1. Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Product reimbursement period Product Reimbursement Period Product Reimbursement Period Purchase price of common stock (as a percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent Employee Stock Purchase Plan Assumed conversion of ESPP Employee Stock [Member] Customer [Domain] Customer [Domain] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Leases Lessee, Operating Leases [Text Block] Basic income per common share (in dollars per share) Earnings Per Share, Basic Measurement Input Type Measurement Input Type [Axis] Raw materials Inventory, Raw Materials, Gross Repurchase and retirement of common stock Payments for Repurchase of Common Stock Total current assets Assets, Current Statistical Measurement Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Cost of goods sold Cost of Revenue Short-term lease expense Short-Term Lease, Cost Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Unrealized gain on investments adjustments Unrealized gain on investment adjustments Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent Accumulated deficit Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Product and Service [Axis] Unvested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares Weighted average exercise price, unvested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Unvested, Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Unvested, Weighted Average Exercise Price Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] U.S. government agency bonds Debt Securities, Available-for-Sale Contingent Liability Business Combination, Contingent Consideration, Liability Expected volatility Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Foreign Non-US [Member] Expected dividends Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Series B Series B Preferred Stock [Member] Concentration risk, percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders’ equity Liabilities and Equity Warrants canceled (in dollars per share) Class Of Warrant Or Right Weighted Average Exercise Price Cancelled Class Of Warrant Or Right Weighted Average Exercise Price Cancelled Stock options and Restricted Stock Units Share-Based Payment Arrangement, Option [Member] CHEMOSAT CHEMOSAT [Member] CHEMOSAT Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Interest receivable Interest receivable Interest Receivable, Current Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Series D Series D Preferred Stock [Member] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other liabilities, non-current Increase (Decrease) in Other Noncurrent Liabilities Other expense Other Nonoperating Income (Expense) Name Awards Close in Time to MNPI Disclosures, Individual Name Purchase of investments Payments to Acquire Investments Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Aggregate intrinsic value, outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Long-Lived Asset, Class Long-Lived Asset, Class [Domain] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Business Combination, Contingent Consideration, Type [Domain] Business Combination, Contingent Consideration, Type [Domain] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Customer 2 Customer Two [Member] Customer Two Schedule Of Property Plant And Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, $0.01 par value; 10,000,000 shares authorized; 14,192 and 14,192 shares issued and outstanding at June 30, 2026 and December 31, 2025, respectively Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Class of Stock Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Taxes Prepaid Taxes Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Inventory [Line Items] Inventory [Line Items] Schedule of Designated Preferred Shares Schedule of Stock by Class [Table Text Block] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total Assets Assets, Fair Value Disclosure Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Commitments and Contingencies Commitments Disclosure [Text Block] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Additional Paid in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Equipment Equipment [Member] Series F-4 Series F4 Preferred Stock [Member] Series F4 Preferred Stock. Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Measurement Input, Expected Term Measurement Input, Expected Term [Member] Schedule of Stock Option Activity Schedule of Stock Options Roll Forward [Table Text Block] Warrants Class Of Warrant Or Right Outstanding [Roll Forward] Class Of Warrant Or Right Outstanding Operating lease expense Operating Lease, Expense Professional fees Prepaid Expense and Other Assets, Current [Abstract] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Series F Preferred Stock Series F Preferred Stock [Member] Investments, Debt and Equity Securities [Abstract] Amortization of premiums and discounts on marketable securities Investment Income, Net, Amortization of Discount and Premium Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Current assets Assets, Current [Abstract] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Right of use assets obtained in exchange for lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Income tax expense Income Tax Expense (Benefit) 2020 Plan 2020 Plan [Member] 2020 Plan Customer Concentration Risk Customer Concentration Risk [Member] Award Timing Method Award Timing Method [Text Block] Net increase in total cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Loss contingency accrual, current Loss Contingency, Accrual, Current Net income Net income (loss) Net income Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Valuation Technique, Discounted Cash Flow Valuation Technique, Discounted Cash Flow [Member] Series F-2 Series F2 Preferred Stock [Member] Series F2 Preferred Stock. Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] ESPP withholding Employee Stock Purchase Plan Withholding, Current Employee Stock Purchase Plan Withholding ,Current Proceeds from exercise of stock options Proceeds from Stock Options Exercised Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table] Weighted average exercise price, exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Common Warrants Common Warrants [Member] Common Warrants Stock options and Restricted Stock Units Share-Based Payment Arrangement [Member] Risks and Uncertainties Risk And Uncertainties Policy [Policy Text Block] Risk and uncertainties. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]