Document And Entity Information
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Summary of Significant Accounting Policies
Tax computed on the loss before tax at a tax rate of 21.0% for the year ended December 31, 2024
Note 3 - Other Current Assets
Note 4 - Intangible Assets
Note 5 - Accrued Liabilities
Note 6 - Convertible Promissory Note Due to Novartis
Note 8 - Preferred Stock
Note 9 - Warrant Liability
Note 11 - Stock-based Compensation
Income Tax Disclosure [Text Block]
Note 13 - Income Tax
Note 2 - Summary of Significant Accounting Policies - Estimated Useful Life of Assets (Details)
Note 2 - Summary of Significant Accounting Policies - Schedule of Antidilutive Securities (Details)
Note 3 - Other Current Assets - Other Current Assets (Details)
allr_EffectiveIncomeTaxRateReconciliationLossOffsetToResearchAndDevelopmentPercent
Loss offset to research and development incentive, percent
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to loss offset to research and development expense.
Note 4 - Intangible Assets - Schedule of Intangible Assets (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 5 - Accrued Liabilities - Schedule of Accrued Liabilities (Details)
Note 6 - Convertible Promissory Note Due to Novartis - Convertible Debt (Details)
Convertible Debt [Table Text Block]
Note 8 - Preferred Stock - Schedule of Valuation Inputs (Details)
Note 9 - Warrant Liability - Schedule of Derivative Liabilities and Fair Value (Details)
Note 11 - Stock-based Compensation - Summary of Restricted Stock Unit Activity (Details)
Note 11 - Stock-based Compensation - Schedule of Stock Option Activity (Details)
Note 11 - Stock-based Compensation - Stock-based Compensation Expense (Details)
Schedule of Other Current Assets [Table Text Block]
Note 13 - Income Tax - Income Tax Reconciliation (Details)
Financial Instrument Subject to Mandatory Redemption [Table]
Note 13 - Income Tax - Components of Net Loss Before Income Taxes (Details)
Value added tax (“VAT”) receivable
Note 13 - Income Tax - Schedule of Income Tax Expense (Benefit) (Details)
Note 13 - Income Tax - Schedule of Deferred Tax Assets and Liabilities (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_LitigationSettlementAmountAwardedToOtherParty
Litigation Settlement, Amount Awarded to Other Party
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Grants, fair value (in dollars per share)
Warrant derivative liability
Vested, fair value (in dollars per share)
Forfeited, fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Unvested balance, fair value (in dollars per share)
Unvested balance, fair value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Forfeited, units (in shares)
Change in cumulative translation adjustment
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Unvested balance, units (in shares)
Unvested balance, units (in shares)
Grants, units (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Vested, units (in shares)
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Convertible promissory note and accrued interest
Convertible Notes Payable, Current
Outstanding, weighted average contractual term (Year)
Outstanding, intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Forfeited, weighted average exercise price (in dollars per share)
Forfeited, weighted average exercise price (in dollars per share)
Income taxes payable
Granted, weighted average exercise price (in dollars per share)
Accrued expenses and other current liabilities
Accrued Liabilities, Current
Accrued Liabilities, Current
Accrued interest on milestone liabilities
Accounts payable
Accounts Payable, Current
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding, share (in shares)
Outstanding, share (in shares)
Other
Payroll accruals
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Reverse split (1-for-30) rounding adjustment
The round up of common stock issued as a result of the reverse stock split.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
Stock issued in conjunction with consulting agreement
Accrued audit and legal
Indefinite-Lived Intangible Assets [Axis]
Indefinite-Lived Intangible Assets, Major Class Name [Domain]
allr_RoyaltyAnnualSales
Royalty, Annual Sales
The annual sales used to determine royalty payments.
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of property and equipment
allr_OperatingLossCarryforwardsNotSubjectToExpiration
Operating Loss Carryforwards, Not Subject to Expiration
Amount of operating loss carryforward not subject to expiration, before tax effects, available to reduce future taxable income under enacted tax laws.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)
allr_OperatingLossCarryforwardsSubjectToExpiration
Operating Loss Carryforwards, Subject to Expiration
Amount of operating loss carryforward subject to expiration, before tax effects, available to reduce future taxable income under enacted tax laws.
Tax value of derivative warrants
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to the tax value of derivative warrants.
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)
Grantee Status [Domain]
Grantee Status [Axis]
Granted, intrinsic value
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options granted in the period.
Current liabilities:
Supplemental disclosure of cash flow information
us-gaap_Assets
Total assets
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Preferred Stock [Text Block]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Extinguishment of preferred stock
Amount of increase (decrease) in additional paid in capital (APIC) resulting from the extinguishment of preferred stock.
Other Current Assets [Text Block]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Net loss attributable to common stockholders
Share-Based Payment Arrangement [Text Block]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Common stock issued for services
allr_IssuanceOfStockAndWarrantsForServicesOrClaims1
Represent the fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.
Award Type [Domain]
us-gaap_RedeemablePreferredStockDividends
Redeemable Preferred Stock Dividends
Deemed dividends on Preferred Stock
Effective Income Tax Rate Reconciliation [Table]
us-gaap_RestrictedCashAndCashEquivalents
Restricted Cash and Cash Equivalent
Award Type [Axis]
Net loss
Net loss
Restricted Stock Units (RSUs) [Member]
allr_AccountsPayableAndAccruedLiabilitiesInterestRateStatedPercentage
Accounts Payable and Accrued Liabilities, Interest Rate, Stated Percentage
Contractual interest rate for accounts payable and accrued liabilities.
allr_EffectiveIncomeTaxRateReconciliationSpecialDeductionOnResearchAndDevelopment
Special tax deduction on research and development expenses
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to a special deduction on research and development expenses.
Share-Based Payment Arrangement, Option [Member]
License Agreement with Novartis for Dovitinib [Member]
Represents the license agreement with Novartis for Dovitinib.
Warrant [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Antidilutive Securities [Axis]
us-gaap_PreferredStockConvertibleSharesIssuable
Preferred Stock, Convertible, Shares Issuable (in shares)
Antidilutive Securities, Name [Domain]
us-gaap_PreferredStockConvertibleConversionPrice
Preferred Stock, Convertible, Conversion Price (in dollars per share)
Settled Litigation [Member]
us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
Opening balance
Ending balance
Litigation Status [Axis]
Litigation Status [Domain]
Commitments and Contingencies Disclosure [Text Block]
Property, plant and equipment, net
Long-Term Debt, Type [Axis]
Long-Term Debt, Type [Domain]
Net proceeds from common stock and pre-funded warrant issuance
Proceeds from Issuance of Common Stock and Warrants
The cash inflow from issuance of common stock and warrants.
CASH FLOWS FROM INVESTING ACTIVITIES:
Income taxes payable
us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
Income tax expense (benefit)
Effective tax rate
Accrued liabilities
Accounts payable
us-gaap_IncreaseDecreaseInAccountsPayable
Property, Plant, and Equipment, Estimated Useful Life [Table Text Block]
Tabular disclosure for the estimated useful life of property, plant, and equipment.
DENMARK
us-gaap_OperatingExpenses
Total operating expenses
Exact Value [Member]
Related to the exact value.
General and administrative
us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax
OCI, Foreign Currency Transaction and Translation Gain (Loss), Arising During Period, Tax
Interest accrual, expense
us-gaap_CashEquivalentsAtCarryingValue
Cash Equivalents, at Carrying Value
Currency translation adjustment
Currency translation adjustment
allr_EffectiveIncomeTaxRateReconciliationLossOffsetToResearchAndDevelopmentAmount
Loss offset to research and development incentive
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to loss offset to research and development expense.
Cash
us-gaap_InterestExpenseNonoperating
Interest expenses
us-gaap_DebtInstrumentConvertibleConversionPrice1
Debt Instrument, Convertible, Conversion Price (in dollars per share)
Redeemable Series A Convertible Preferred Stock [Member]
Represents redeemable Series A convertible preferred stock.
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Conversion of Series A Preferred Stock to Common Stocks [Member]
Represents Conversion of Series A Preferred Stock to Common Stocks.
Interest accretion, opening
Change in fair value of warrant derivative liability
Amendment Flag
us-gaap_ComprehensiveIncomeNetOfTax
Total comprehensive loss
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Reverse split (1-for-30) rounding adjustment (in shares)
Repurchase of common stock (in shares)
Treasury Stock, Shares, Acquired (in shares)
Unearned revenue
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common stock, outstanding (in shares)
Common Stock, Shares, Outstanding (in shares)
us-gaap_PreferredStockSharesOutstanding
Preferred Stock, Shares Outstanding (in shares)
Depreciation and amortization
The aggregate expense (income) recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
Current Fiscal Year End Date
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Document Fiscal Period Focus
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
Document Period End Date
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepaid expenses
Entity File Number
Entity Ex Transition Period
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
PIPE Sales Agreement [Member]
PIPE Sales Agreement
Document Type
Entity Small Business
Entity Shell Company
Document Information [Line Items]
Tumim Stone Capital [Member]
Tumim Stone Capital
Document Information [Table]
us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Balance
Balance
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
Streeterville Note [Member]
Streeterville Note
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
Forfeited, intrinsic value
Amount by which the current fair value of the underlying stock exceeds the exercise price of options forfeited.
us-gaap_AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings
Deemed dividend on preferred stock
Award Timing MNPI Disclosure [Text Block]
Impairment of intangible assets
us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Tax credit receivable
Schedule of Long-Term Debt Instruments [Table]
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Entity Tax Identification Number
Entity Central Index Key
Insider Trading Policies and Procedures [Line Items]
Entity Registrant Name
Liability Class [Axis]
ecd_InsiderTrdPoliciesProcAdoptedFlag
Insider Trading Policies and Procedures Adopted [Flag]
Fair Value by Liability Class [Domain]
Entity [Domain]
Legal Entity [Axis]
Entity Address, Address Line One
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Repurchase of common stock
Entity Address, City or Town
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Entity Address, Postal Zip Code
us-gaap_TreasuryStockCommonValue
Treasury stock, at cost; 2,949,639 shares
Entity Address, State or Province
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Material Terms of Trading Arrangement [Text Block]
Entity Common Stock, Shares Outstanding
Trading Arrangements, by Individual [Table]
us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
Extinguishment of preferred stock
us-gaap_IncreaseDecreaseInOtherCurrentAssets
Other current assets
Deemed dividend on preferred stock
Trading Symbol
Nature of Operation, Product Information, Concentration of Risk [Table]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Conversion of preferred stock into common stock, net
Conversion of preferred stock into common stock, net (in shares)
Local Phone Number
us-gaap_TableTextBlock
Notes Tables
Stock-based compensation expense (in shares)
Granted, share (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeited, share (in shares)
Collaborative Arrangement and Arrangement Other than Collaborative [Domain]
Issuance of common stock, net of offering costs under open market sales agreement (ATM) (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Common stock issued for services
Common stock issued for services (in shares)
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Issuance of common stock, net of offering costs under open market sales agreement (ATM)
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Research and development
Accumulated other comprehensive loss
Measurement Input, Share Price [Member]
Debt Disclosure [Text Block]
us-gaap_InterestExpenseDebt
Interest Expense, Debt
Measurement Input, Price Volatility [Member]
Changes in operating assets and liabilities:
Measurement Input, Risk Free Interest Rate [Member]
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Research and Development Incentives and Receivable [Policy Text Block]
Disclosure of accounting policy for research and development incentives and receivable.
Subsequent Event [Member]
Measurement Input, Expected Term [Member]
Furniture and Office Equipment [Member]
Represents furniture and office equipment.
Warrants [Policy Text Block]
Disclosure of accounting policy related to warrants.
Deferred income taxes
Subsequent Event [Table]
Non-cash interest expense
Receivables from ATM sales
The sum of amounts currently receivable from equity sales, that is amounts expected to be collected within one year or the normal operating cycle, if longer.
Subsequent Event Type [Axis]
Measurement Input, Exercise Price [Member]
Subsequent Event Type [Domain]
us-gaap_ForeignCurrencyTransactionGainLossUnrealized
Unrealized foreign exchange gain
Salary deposit
Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards salary payments within one year or during the operating cycle, if shorter.
Subsequent Events [Text Block]
PIPE Prefunded Warrants [Member]
PIPE Prefunded Warrants
allr_EquityOfferingMaximumAmountOfFutureProceeds
Equity Offering, Maximum Amount of Future Proceeds
The maximum amount of future proceeds in the equity offering.
allr_ClassOfWarrantOrRightIssuedDuringPeriodOfferingPrice
Class of Warrant or Right, Issued During Period, Offering Price (in dollars per share)
The offering price of warrants issued during the period.
Change in deferred tax
Total
Measurement Input Type [Axis]
Measurement Input Type [Domain]
Valuation Technique, Discounted Cash Flow [Member]
Fair Value of Financial Instruments, Policy [Policy Text Block]
Valuation Approach and Technique [Axis]
A T M Facility [Member]
Represents ATM facility.
Granted, weighted average contractual term (Year)
Weighted average remaining contractual term for option awards granted, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Valuation Approach and Technique [Domain]
Capitalized R&E costs
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
Forfeited, weighted average contractual term (Year)
Weighted average remaining contractual term for option awards forfeited, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Segment Reporting, Policy [Policy Text Block]
Share-Based Payment Arrangement, Employee [Member]
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Stock-based compensation expense
us-gaap_ShareBasedCompensation
Earnings Per Share, Policy [Policy Text Block]
Operating expenses:
Issuance of common shares on conversion of 3i Exchange Warrants
Represents the stock issued from conversion of warrants.
Comprehensive Income, Policy [Policy Text Block]
Plus, accretion of debt discount, interest expense
Income Tax, Policy [Policy Text Block]
The 2024 3i Convertible Senior Promissory Notes [Member]
Relating to the 2024 3i Convertible Senior Promissory Notes.
Research and Development Expense, Policy [Policy Text Block]
us-gaap_IndefiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
Foreign translation adjustment
Series A Convertible Preferred Stock [Member]
Represents the series a convertible preferred stock options.
Conversion of Series A Redeemable Preferred Stock to common stock
Derivative Warrant [Member]
Represents the derivative warrants.
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]
Intangible Asset, Indefinite-Lived [Table]
us-gaap_ConversionOfStockSharesIssued1
Conversion of Stock, Shares Issued (in shares)
us-gaap_ConversionOfStockAmountIssued1
Conversion of Stock, Amount Issued
allr_DeemedDividend
Deemed Dividend
Represents the amount of deemed dividend during the period.
Intangible Assets Disclosure [Text Block]
us-gaap_ConversionOfStockSharesConverted1
Conversion of Stock, Shares Converted (in shares)
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
Stock Conversion Description [Axis]
Conversion of Stock, Name [Domain]
us-gaap_AssetsCurrent
Total current assets
Non-current assets:
Share-Based Payment Arrangement [Policy Text Block]
Equity [Text Block]
Deposits
allr_DividendsDeemedPreferredStock
Deemed dividends on Preferred Stock
The total cost for the dividends deemed during the period.
Treasury, shares (in shares)
Balance (in shares)
Balance (in shares)
Tax credit receivable
Intangible asset impairment
Impairment of Intangible Assets (Excluding Goodwill)
allr_GainLossOnExtinguishmentOfPreferredStock
Gain Loss On Extinguishment Of Preferred Stock
The gain (loss) on the extinguishment of preferred stock.
Selling, General and Administrative Expenses, Policy [Policy Text Block]
Common stock, $0.0001 par value (250,000,000 shares authorized); 19,030,619 and 7,302,797 shares issued and 16,080,980 and 7,302,797 outstanding at December 31, 2025, and December 31, 2024, respectively
Gain on extinguishment of Series A Preferred Stock
The gain (loss) on the extinguishment of convertible preferred stock.
Accrued SEC settlement
The amount of accrued audit and legal liabilities.
Reconciliation of net loss to net cash used in operating activities:
Exchange Warrants [Member]
Represents the exchange warrants.
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
Common stock, issued (in shares)
Development cost liability
The amount of accrued development costs.
Gain on extinguishment of Series A Preferred Stock
allr_StockIssuedForDebtExtinguishment
The cost related to the shares issued for the extinguishment of debt.
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Revenue from Contract with Customer [Policy Text Block]
allr_ClassOfWarrantOrRightIssued
Class of Warrant or Right, Issued (in shares)
The number of warrant or right issued.
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Statistical Measurement [Domain]
Eisai [Member]
Represents the Eisai company.
Maximum [Member]
allr_MilestonePaymentSales
Milestone Payment, Sales
Represents the sales milestone payment.
Minimum [Member]
allr_MilestonePayment
Milestone Payment
Represents the milestone payment.
ATM [Member]
Represents the ATM member.
Product and Service [Axis]
Other current assets
Total
Product and Service [Domain]
Statistical Measurement [Axis]
Eisai Royalties Four [Member]
Represents the fourth Eisai royalty payments.
Eisai Royalties Three [Member]
Represents the third Eisai royalty payments.
Litigation Case [Axis]
IPR and D Assets [Member]
Represents IPR&D assets.
allr_DebtInstrumentsAggregatePurchasePrice
Debt Instruments Aggregate Purchase Price
The aggregate purchase price of the note.
allr_CommonStockSharesAuthorizedIncreaseDecrease
Common Stock, Shares Authorized, Increase (Decrease) (in shares)
Number of increase or decrease in common stock shares authorized.
Litigation Case [Domain]
Debt, Policy [Policy Text Block]
Convertible Promissory Note [Text Block]
Disclosure with information pertaining to the convertible promissory notes.
Measurement Input, Weighted Average Cost of Capital [Member]
Measurement input using the weighted average cost of capital.
allr_RoyaltyAnnualPercentage
Royalty Annual Percentage
The percentage of sales the company must pay as a royalty.
allr_IntangibleAssetsImpairmentAssessmentMeasurementInput
Intangible Assets Impairment Assessment, Measurement Input
Value of input used to measure impairment for intangible assets.
us-gaap_PreferredStockSharesIssued
Preferred Stock, Shares Issued (in shares)
allr_LicensedProductSales
Licensed Product Sales
Represents the milestone licensed product sales.
Eisai Royalty Two [Member]
Represents the second Eisai royalty payments.
Cash paid for interest
Eisai Royalties One [Member]
Represents the first Eisai royalty payments.
Prepaid expenses
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Third Note [Member]
Represents the third debt note.
Geographical [Axis]
us-gaap_DeferredTaxAssetsGross
Total deferred tax
Geographical [Domain]
Issuance of convertible redeemable preferred stock, net of offering costs (in shares)
The number of convertible redeemable preferred stock issued during the period.
First Note [Member]
Represents the first debt note.
allr_EquityIssuanceMaximumAggregateSalesPrice
Equity Issuance, Maximum Aggregate Sales Price
Maximum amount of aggregate sales price under equity issuance.
allr_DebtInstrumentDiscountPercent
Debt Instrument, Discount Percent
represents the discount rate for the debt note.
Second Note [Member]
Represents the second debt note.
us-gaap_PreferredStockParOrStatedValuePerShare
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
Revenue
Issuance of convertible redeemable preferred stock, net of offering costs
The value of convertible redeemable preferred stock during the period.
Foreign exchange gains (losses)
allr_EquityOfferingAmountAvailable
Equity Offering, Amount Available
The amount of shares available to be issued in the equity offering.
3i Exchange Warrants [Member]
Represents the 3i exchange warrants.
Intangible assets
us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets
Common Share Purchase Warrants [Member]
represents the common shares used to purchase warrants.
License And Development Agreements [Text Block]
The disclosure of the licensing and development agreements.
Other accruals
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther
Cash received for interest
us-gaap_ProceedsFromInterestReceived
Estimated useful life (Year)
CASH FLOWS FROM OPERATING ACTIVITIES:
Redemption of convertible redeemable preferred stock (in shares)
The number of shares in the redemption of preferred stock options.
Redemption of convertible redeemable preferred stock
The value of the redeemed preferred stock options.
Statement [Line Items]
allr_DebtInstrumentUnamortizedDiscount1
Less debt discount, opening
Amount, after accumulated amortization, of debt discount.
Stock compensation
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Additional paid-in capital
Revenue:
AOCI Attributable to Parent [Member]
Property, Plant and Equipment, Policy [Policy Text Block]
us-gaap_NonoperatingIncomeExpense
Total other income
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset [Domain]
August 2024 Offering [Member]
Represents August 2024 Offering.
Net operating losses
Series A Convertible Redeemable Preferred Stock [Member]
Represents Series A Convertible Redeemable Preferred Stock.
Risks and Uncertainties [Policy Text Block]
Disclosure of accounting policy for information about unusual risk or uncertainty or both and their financial impact or potential financial impact.
Other income (expense)
Ascendiant Capital Markets, LLC [Member]
Represents Ascendiant Capital Markets, LLC.
Current assets:
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash, beginning of year
Cash, end of year
License [Member]
Interest income
Effect of exchange rate changes on cash
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
us-gaap_Liabilities
Total liabilities
Convertible Promissory Note Due to Novartis [Member]
Represents the convertible promissory note due to Novartis.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
Net increase (decrease) in cash
Commitments and contingencies (Note 14)
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Loss from operations
us-gaap_ContractWithCustomerLiabilityRevenueRecognized
Contract with Customer, Liability, Revenue Recognized
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Stock-based compensation expense
allr_SharebasedPaymentArrangementExpenseRecovery
Amount of expense (recovery) for award under share-based payment arrangement. Excludes amount capitalized.
Fair Value Measurements Of Preferred Stock Valuation Technique [Table Text Block]
The tabular disclosure of the fair value of the referred stock using the valuation technique.
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
us-gaap_DeferredTaxLiabilities
Net deferred tax liabilities
Counterparty Name [Axis]
Counterparty Name [Domain]
Derivatives, Policy [Policy Text Block]
Stockholders’ equity
us-gaap_ContractWithCustomerLiability
Contract with Customer, Liability
us-gaap_DerivativeLiabilities
Derivative Liability
us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Accounts Payable and Accrued Liabilities
us-gaap_PaymentsOfStockIssuanceCosts
Payments of Stock Issuance Costs
Concentration Risk, Credit Risk, Policy [Policy Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Property, plant and equipment
Completion of Capital Raise [Member]
Represents the payment paid after the completion of the capital raise.
Paid Within 10 Days of Fourth Amendment Execution [Member]
Represents the payment paid within 10 days of the execution of the fourth amendment.
Fifth Amendment Agreement [Member]
Represents the periodic payment for the fifth amendment agreement.
Payment on or Before March 1, 2024 [Member]
Represents the payment that must be paid on or before March 1, 2024.
Unvested Restricted Stock Units [Member]
In relation to unvested restricted stock units.
Already Paid [Member]
Represents the scenario tat has already been paid.
allr_LicenseAgreementPeriodicPayment
License Agreement, Periodic Payment
The periodic payments for the licensing agreement.
Preferred stock measurement input
The measurement input for the preferred stock.
allr_SharebasedCompensationArrangementBySharebasedPaymentAwardAnnualPercentageIncrease
Share-Based Compensation Arrangement by Share-Based Payment Award, Annual Percentage Increase
Represents the annual percentage increase of shares related to the share-based compensation.
us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock
Redemption of Convertible Redeemable Series A Preferred Stock
Payment Due by September 1, 2024 [Member]
Represents the periodic payment that must be paid no later than September 1, 2024.
Cashless exercise of 3i Exchange Warrants (in shares)
The number of shares issued as a cashless exercise of warrants.
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity
us-gaap_PaymentsForRepurchaseOfCommonStock
Common stock repurchase
Conversion of Series A Preferred Stock To Common Stock [Member]
Represents the conversion of series A preferred stock into common stock.
Scenario [Domain]
Stock-based compensation expense
The additional paid in capital related to the share based arrangement, increase for the cost recognition or recovery.
Cashless exercise of 3i Exchange Warrants
The value of the stock issued during the period for the cashless exercise of 3i exchange warrants.
SEC Investigation [Member]
Represents SEC Investigation.
Retained Earnings [Member]
us-gaap_TreasuryStockAcquiredAverageCostPerShare
Shares Acquired, Average Cost Per Share (in dollars per share)
Proceeds from ATM sales of common stock, net of issuance costs
Proceeds from Issuance of Common Stock
Development costs and Out-License Agreement with Smerud [Member]
Represents Development costs and Out-License Agreement with Smerud.
Scenario [Axis]
Proceeds from issuance of Convertible Redeemable Series A Preferred Stock
Treasury Stock, Common [Member]
allr_CommissionFeePercentage
Commission Fee, Percentage
Represents the commission fee percentage.
Current Foreign
Deferred Foreign
Additional Paid-in Capital [Member]
Common Stock [Member]
Current Federal
Preferred Stock [Member]
Deferred Federal
Equity Components [Axis]
Equity Component [Domain]
us-gaap_ProceedsFromIssuanceOfRedeemablePreferredStock
Proceeds from Issuance of Redeemable Preferred Stock
Stock, Class of Stock [Table]
us-gaap_CurrentIncomeTaxExpenseBenefit
Total
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Class of Warrant or Right [Axis]
Class of Warrant or Right [Domain]
Income (Loss) from Continuing Operations before Income Taxes, Foreign
Change in fair value of warrant derivative liabilities
Change in fair value adjustment of warrant derivative liabilities
Amount of expense (income) related to adjustment to fair value of warrant and derivative liabilities.
Class of Warrant or Right [Table]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before income tax expense (benefit)
us-gaap_ConvertibleNotesPayable
Convertible promissory note, opening balance
Convertible promissory note, ending balance
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)
United States
Tax and Customs Administration, Netherlands [Member]
ICFR Auditor Attestation Flag
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Income Tax Jurisdiction [Axis]
Income Tax Jurisdiction [Domain]
Domestic Tax Jurisdiction [Member]
Foreign Tax Jurisdiction [Member]
Equipment [Member]
Document Annual Report
Cash and Cash Equivalents, Policy [Policy Text Block]
Entity Incorporation, State or Country Code
Convertible promissory note, net of discount
General and Administrative Expense [Member]
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
us-gaap_OpenTaxYear
Open Tax Year
Document Transition Report
Document Financial Statement Error Correction [Flag]
Entity Interactive Data Current
Security Exchange Name
Title of 12(b) Security
Research and Development Expense [Member]
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Domain]
Collaborative Arrangement and Arrangement Other than Collaborative [Axis]
Auditor Name
Auditor Firm ID
Auditor Location
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
us-gaap_RepaymentsOfNotesPayable
Repayment of 3i debt
us-gaap_SharePrice
Share Price (in dollars per share)
Antidilutive Securities (in shares)
Proceeds from 3i promissory notes
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
Statement [Table]
Statement of Financial Position [Abstract]
Weighted average common shares outstanding, basic and diluted (in shares)
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Other adjustments, percent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective tax rate, percent
Net loss per common share, basic and diluted (in dollars per share)
us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance
Change in Denmark valuation allowance, percent
Statement of Cash Flows [Abstract]
Statement of Stockholders' Equity [Abstract]
Income Statement [Abstract]
us-gaap_ProceedsFromIssuanceOfDebt
Proceeds from Issuance of Debt
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
Other Commitments [Table]
Other adjustments
CASH FLOWS FROM FINANCING ACTIVITIES:
Tax computed on the loss before tax at a tax rate of 21.0% for the year ended December 31, 2025, percent
Change in Accounting Estimate [Table]
Adjustment of tax concerning previous years
Change in valuation allowance
Change in valuation allowance
Series A Preferred Stock [Member]
Offsetting Assets [Table]
us-gaap_StockholdersEquity
Total stockholders’ equity
Balance
Balance
Class of Stock [Axis]
Class of Stock [Domain]
Schedule of Derivative Liabilities at Fair Value [Table Text Block]
Derivative Financial Instruments, Liabilities [Member]
allr_PolicyTable
Foreign rate differential