Document And Entity Information
Expected dividend yield
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Note To Financial Statement Details Textual
U.S Federal statutory tax rate
Significant Accounting Policies
Risk-free interest rate
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Note 2 - Summary of Significant Accounting Policies and Basis of Presentation
Note 3 - Net Loss Per Share
Note 4 - Warrants
Note 5 - Stockholders' Equity, Equity Incentive Plans, And Stock-Based Compensation
Note 7 - Fair Value Measurements
Note 8 - Income Taxes
Note 2 - Summary of Significant Accounting Policies and Basis of Presentation - Components of Cash and Cash Equivalents (Details)
Income Tax Disclosure [Text Block]
Note 3 - Net Loss Per Share - Schedule of Earnings Per Share (Details)
Note 3 - Net Loss Per Share - Antidilutive Securities (Details)
Note 3 - Net Loss Per Share - Antidilutive Securities (Details) (Parentheticals)
Expected volatility
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Note 4 - Warrants - Warrants Outstanding (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 4 - Warrants - Summary of Valuation Assumption (Details)
Expected term (in years) (Year)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Note 5 - Stockholders' Equity, Equity Incentive Plans, And Stock-Based Compensation - Summary of Common Stock Reserved for Future Issuance (Details)
Note 5 - Stockholders' Equity, Equity Incentive Plans, And Stock-Based Compensation - Valuation Assumptions (Details)
Note 5 - Stockholders' Equity, Equity Incentive Plans, And Stock-Based Compensation - Stock Option Activity (Details)
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Note 5 - Stockholders' Equity, Equity Incentive Plans, And Stock-Based Compensation - Stock-based Compensation Expense (Details)
Note 7 - Fair Value Measurements - Fair Value on Recurring Basis (Details)
Note 7 - Fair Value Measurements - Fair Value on Recurring Basis Unobservable Input Reconciliation (Details)
Note 7 - Fair Value Measurements - Fair Value on Recurring Basis Unobservable Input Reconciliation (Details) (Parentheticals)
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Note 7 - Fair Value Measurements - Key Inputs (Details)
Note 8 - Income Taxes - Domestic and International Pre-tax Income (Loss) (Details)
Note 8 - Income Taxes - Income Tax Expense Attributable to Operations (Details)
Note 8 - Income Taxes - Provision for Income Taxes (Details)
Note 8 - Income Taxes - Deferred Tax Assets (Details)
Note 8 - Income Taxes - Schedule of Unrecognized Tax Benefits (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Options vested and exercisable, weighted average exercise price (in dollars per share)
Options vested and exercisable, weighted average remaining contractual term (Year)
Options vested and exercisable, aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Options vested and exercisable, number of options outstanding (in shares)
Balance, weighted average remaining contractual term (Year)
Balance, aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Balance, weighted average exercise price (in dollars per share)
Balance, weighted average exercise price (in dollars per share)
Expired/Cancelled, Weighted Average Exercise Price (in dollars per share)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Granted, weighted average exercise price (in dollars per share)
Accrued compensation
Proceeds from issuance of common stock in ATM offering, net of transaction costs
The net cash inflow from the additional capital contribution to the entity.
Accounts payable
Stock options outstanding (in shares)
Balance, number of options outstanding (in shares)
Balance, number of options outstanding (in shares)
Expired/Cancelled (in shares)
Expired/Cancelled, Number of Options Outstanding (in shares)
Other accrued liabilities
us-gaap_OtherAccruedLiabilitiesCurrent
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Grantee Status [Domain]
Weighted average shares outstanding
Grantee Status [Axis]
Liabilities
us-gaap_Assets
Total Assets
Supplemental disclosures of cash flow information:
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Share-Based Payment Arrangement [Text Block]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Award Type [Domain]
Effective Income Tax Rate Reconciliation [Table]
Net loss
Net loss
Net Income (Loss) Attributable to Parent, Total
Award Type [Axis]
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Option [Member]
Warrant [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Antidilutive Security, Excluded EPS Calculation [Table]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Commitments and Contingencies Disclosure [Text Block]
rvph_ClassOfWarrantOrRightIssuedDuringPeriod
SPAC Public Warrants (in shares)
The number of warrants or rights issued during period.
California Franchise Tax Board [Member]
Non-current prepaid clinical trial costs
Represents noncurrent prepaid clinical trial costs.
Clinical Trial Costs [Policy Text Block]
Disclosure of accounting policy for clinical trial costs.
Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]
Prefunded Warrants [Member]
Represents prefunded warrants.
Net loss per share:
Earnings Per Share [Text Block]
The December 2024 Underwritten Offering [Member]
Represents the December 2024 underwritten offering.
The December 2024 Series A Common Warrants [Member]
Represents the December 2024 Series A Common Warrants.
Provision for income taxes
Provision for income taxes
The December 2024 Series B Common Warrants [Member]
Represents the December 2024 Series B common warrants.
Warrant liabilities
rvph_WarrantsAndRightsOutstandingFairValue
Warrants and Rights Outstanding, Fair Value
The fair value of warrants and rights outstanding.
Short-Term Debt, Type [Axis]
Short-Term Debt, Type [Domain]
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
Gain (Loss) on Derivative Instruments, Net, Pretax
Gain on remeasurement of warrant liabilities
us-gaap_OperatingExpenses
Total operating expenses
us-gaap_DebtInstrumentTerm
Debt Instrument, Term
General and administrative
us-gaap_Cash
Cash
Cash and cash equivalents
Cash and cash equivalents
us-gaap_InterestExpenseNonoperating
Interest expense
Cash on deposit
Stock-based compensation expense
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
Change in fair value of warrant liabilities
Money market funds (cash equivalents)
rvph_EquityIssuedOfferingPricePerShare
Equity Issued Offering, Price Per Share
The price per share of the equity issued offering.
Amendment Flag
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Common Stock Warrants [Member]
Represents common stock warrants.
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common Stock, Shares, Outstanding (in shares)
Common Stock, Shares, Outstanding
Preferred Stock, Shares Outstanding (in shares)
Preferred Stock, Shares Outstanding
Current Fiscal Year End Date
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Underwriter Warrants [Member]
Represents underwriter warrants.
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
Document Fiscal Period Focus
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
dei_DocumentPeriodEndDate
Document Period End Date
dei_EntityFileNumber
Entity File Number
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
dei_DocumentType
Document Type
Entity Small Business
dei_EntityShellCompany
Entity Shell Company
Document Information [Line Items]
Document Information [Table]
us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Balance, beginning of period
Balance, end of period
dei_EntityPublicFloat
Entity Public Float
Entity Filer Category
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
dei_EntityVoluntaryFilers
Entity Voluntary Filers
dei_EntityWellKnownSeasonedIssuer
Entity Well-known Seasoned Issuer
Award Timing Disclosures [Line Items]
rvph_PolicyTable
Award Timing MNPI Disclosure [Text Block]
Issuance of common stock warrants in June 2025 and September 2025 public offerings, net of transaction costs
Stock-based compensation expense
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Entity Tax Identification Number
Entity Central Index Key
Insider Trading Policies and Procedures [Line Items]
dei_EntityRegistrantName
Entity Registrant Name
Insider Trading Policies and Procedures Adopted [Flag]
Insider Trading Policies and Procedures Adopted [Flag]
Entity [Domain]
Legal Entity [Axis]
Entity Address, Address Line One
Supplier Concentration Risk [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
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
Entity Address, State or Province
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Concentration Risk Type [Axis]
Material Terms of Trading Arrangement [Text Block]
Concentration Risk Type [Domain]
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Trading Arrangements, by Individual [Table]
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
rvph_WorkingCapital
Working Capital
The amount of working capital.
Local Phone Number
us-gaap_TableTextBlock
Notes Tables
May 2025 ATM Sales Agreement [Member]
Represents information pertaining to May 2025 ATM sales agreement.
rvph_ClassOfWarrantOrRightExercisedDuringPeriod
SPAC Public Warrants (in shares)
The number of warrants or rights exercised during period.
Granted, number of options outstanding (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)
June 2025 Series D Common Warrants [Member]
Represents information pertaining to the June 2025 Series D common warrants.
Measurement Input
June 2025 Series C Common Warrants [Member]
Represents information pertaining to the June 2025 Series C common warrants.
us-gaap_WarrantsAndRightsOutstandingTerm
Warrants and Rights Outstanding, Term
Settlement of bonuses in form of stock options
Shares Granted, Value, Share-Based Payment Arrangement, before Forfeiture
Issuance of common stock (in shares)
Stock Issued During Period, Shares, New Issues
Vesting of restricted common stock issued to consultant for services
Vesting of restricted common stock issued to consultant for services (in shares)
us-gaap_LiabilitiesAndStockholdersEquity
Total Liabilities and Stockholders’ Equity
rvph_IncomeTaxExpenseBenefitIncludingImmaterialDifferences
Provision for Income Taxes
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations including immaterial differences.
us-gaap_CashUninsuredAmount
Cash, Uninsured Amount
Common stock issued in connection with warrant exercises
Value of stock issued as a result of the exercise of warrants.
Issuance of common stock
Accumulated deficit
Retained Earnings (Accumulated Deficit), Total
Research and development
Common stock issued in connection with warrant exercises (in shares)
Number of shares issued for warrants exercised during the current period.
Money Market Funds [Member]
Federal Income Tax Note [Table]
Capitalized Section 174
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
June 2025 Warrants [Member]
Represents information pertaining to the June 2025 Warrants.
Measurement Input, Share Price [Member]
June 2025 Public Offering [Member]
Represents information pertaining to the June 2025 Public Offering.
rvph_ClassOfWarrantOrRightExpiredDuringPeriod
SPAC Public Warrants (in shares)
The number of warrants or rights expired during period.
Cash and Cash Equivalents [Axis]
Modification of existing warrants, net of transaction costs
Amount of increase in additional paid in capital (APIC) resulting from modification of existing warrants.
Cash and Cash Equivalents [Domain]
Measurement Input, Price Volatility [Member]
Changes in operating assets and liabilities:
June 2025 Placement Agency Agreement [Member]
Represents information pertaining to the June 2025 Placement Agency Agreement.
Measurement Input, Risk Free Interest Rate [Member]
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Proceeds from issuance of common stock, common stock warrants, prefunded warrants and from modification of existing warrants, in offerings, net of transaction costs
Proceeds from Issuance or Sale of Equity, Net
The net cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.
Issuance of warrants
The fair value of warrants issued in noncash financing activities.
Subsequent Event [Member]
Measurement Input, Expected Dividend Rate [Member]
Schedule of Cash and Cash Equivalents [Table Text Block]
Warrant modification recorded in stockholders' equity
Noncash amount of warrant modification.
Measurement Input, Expected Term [Member]
Cash and Cash Equivalent [Table]
The May 2024 Registered Direct Offering [Member]
Represents The May 2024 Registered Direct Offering
Subsequent Event [Table]
Subsequent Event Type [Axis]
rvph_PaymentOfEquityPlacementCostsAgentFeesAndOtherExpenses
Payment of Equity Placement Costs, Agent Fees and Other Expenses
Cash outflow for equity placement costs, agent fees and other expenses.
Measurement Input, Exercise Price [Member]
Subsequent Event Type [Domain]
The May 2024 Warrants [Member]
Represents The May 2024 Warrants.
Subsequent Events [Text Block]
Warrants [Text Block]
The entire disclosure for warrants.
rvph_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value
The fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).
us-gaap_DeferredIncomeTaxExpenseBenefit
Deferred Total
Measurement Input Type [Axis]
rvph_SecuritiesPurchaseRequiredForModificationOfWarrants
Securities Purchase Required for Modification of Warrants
Amount of securities purchase required for modification of warrants.
Measurement Input Type [Domain]
rvph_PaymentRequiredToLowerExercisePriceOfWarrants
Payment Required to Lower Exercise Price of Warrants
Amount of payment required to lower exercise price of warrants.
Fair Value Measurement, Policy [Policy Text Block]
Common Stock, Capital Shares Reserved for Future Issuance [Table Text Block]
Tabular disclosure of common stock reserved for future issuance.
Existing Warrants [Member]
Represents existing warrants.
Segment Reporting, Policy [Policy Text Block]
Share-Based Payment Arrangement, Employee [Member]
Change in fair value of warrant liabilities
Fair Value Adjustment of Warrants
us-gaap_ShareBasedCompensation
Stock-based compensation expense
Lessee, Leases [Policy Text Block]
Operating expenses
Income Tax, Policy [Policy Text Block]
us-gaap_AssetsFairValueDisclosure
Total assets measured and recorded at fair value
us-gaap_LesseeOperatingLeaseTermOfContract
Lessee, Operating Lease, Term of Contract
Other permanent differences
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 other permanent adjustments.
us-gaap_LesseeOperatingLeaseRenewalTerm
Lessee, Operating Lease, Renewal Term
Research and Development Expense, Policy [Policy Text Block]
us-gaap_StockholdersEquityNoteStockSplit
Stockholders' Equity Note, Stock Split
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
us-gaap_LiabilitiesFairValueDisclosure
Total liabilities measured and recorded at fair value
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share
us-gaap_AssetsCurrent
Total current assets
Money market funds (cash equivalents)
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Share-Based Payment Arrangement [Policy Text Block]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Transaction costs related to offerings included in accounts payable and accrued expenses
The transaction costs related to the offering.
rvph_SettlementOfBonusesWithStockOptions
Settlement of bonuses in form of stock options
The value of the settlement of bonuses with stock options.
Selling, General and Administrative Expenses, Policy [Policy Text Block]
Common stock, par value of $0.0001; 515,000,000 and 315,000,000 shares authorized; 5,842,497 and 2,328,960 shares issued and outstanding as of December 31, 2025 and 2024, respectively
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Measurement Frequency [Axis]
Adjustments to reconcile net loss to net cash used in operating activities
Measurement Frequency [Domain]
Fair Value, Recurring [Member]
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Common Stock, Shares, Issued (in shares)
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
June 2021 Common Stock Warrants, Post Amendment [Member]
Represents the June 2021 comment stock warrants after the amendment.
November 2023 Common Stock Warrants, Post Amendment [Member]
Represents the November 2023 common stock warrants after the amendment.
Total common stock reserved for future issuance (in shares)
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Statistical Measurement [Domain]
Noncash Investing and Financing Activities:
Maximum [Member]
Minimum [Member]
us-gaap_DeferredTaxAssetsNet
Net deferred tax assets
Statistical Measurement [Axis]
rvph_StockIssuanceMaximumOfferingPrice
Stock Issuance, Maximum Offering Price
The maximum offering price for stock issuance.
Preferred Stock, par value of $0.0001; 10,000,000 shares authorized; 0 shares issued and outstanding as of December 31, 2025 and 2024
Debt, Policy [Policy Text Block]
Preferred Stock, Shares Issued (in shares)
Cash paid for interest
Cash paid for taxes
Others
us-gaap_DeferredTaxAssetsGross
Deferred Tax Assets, Gross
Preferred Stock, Shares Authorized (in shares)
Preferred Stock, Shares Authorized
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Fair Value, Inputs, Level 3 [Member]
Fair Value Hierarchy and NAV [Domain]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value Hierarchy and NAV [Axis]
Cash flows from operating activities
Schedule of Segment Reporting Information, by Segment [Table]
us-gaap_WarrantsAndRightsOutstanding
Warrants and Rights Outstanding
Statement [Line Items]
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Additional paid-in capital
Stock-based compensation
us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Other expense, net
us-gaap_NonoperatingIncomeExpense
Total other income, net
Segment Reporting Disclosure [Text Block]
Fair Value, by Balance Sheet Grouping [Table]
NOL carryforwards
Fair Value Disclosures [Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents, beginning of period
Cash and cash equivalents, end of period
Assets
Interest income
us-gaap_Liabilities
Total Liabilities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
Commitments and Contingencies
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
Net decrease in cash and cash equivalents
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Loss from operations
Other income (expense)
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
Prepaid expenses and other current assets
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Stockholders’ Equity
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
September 2025 Public Offering [Member]
Represents the September 2025 public offering.
us-gaap_PaymentsOfStockIssuanceCosts
Payments of Stock Issuance Costs
Concentration Risk, Credit Risk, Policy [Policy Text Block]
September 2025 Series F Common Warrants [Member]
Represents the series F common stock warrants for September 2025.
September 2025 Series E Common Warrants [Member]
Represents the series E common stock warrants for September 2025.
us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Proceeds from Issuance or Sale of Equity
Proceeds from exercise of common stock warrants
Retained Earnings [Member]
us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from Issuance of Common Stock
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign
Additional Paid-in Capital [Member]
Common Stock [Member]
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Equity Components [Axis]
Accrued clinical expenses
rvph_AccruedClinicalExpenses
The amount of accrued clinical expenses.
Equity Component [Domain]
Going Concern [Policy Text Block]
Disclosure of accounting policy for going concern.
Accrued expenses and other current liabilities
The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid and other current liabilities.
us-gaap_CurrentIncomeTaxExpenseBenefit
Current 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]
us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
International
June and September 2025 Public Offerings [Member]
Represents information pertaining to the June and September 2025 public offerings.
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
SPAC Public Warrants (in shares)
SPAC Public Warrants (in shares)
Class of Warrant or Right [Table]
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Loss before provision for income taxes
Reverse Stock Split [Member]
Represents information pertaining to reverse stock splits.
Shares underlying outstanding warrants (in shares)
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
United States
rvph_LesseeOperatingLeaseMonthlyLeasePayment
Lessee, Operating Lease, Monthly Lease Payment
Monthly lease payment for lessee's operating lease.
Corporate Office Lease [Member]
Information related to the corporate office lease.
dei_IcfrAuditorAttestationFlag
ICFR Auditor Attestation Flag
State and Local Jurisdiction [Member]
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]
The August 2024 Underwriter Warrants [Member]
Represents the August 2024 underwriter warrants.
The August 2024 Pre Funded Warrants [Member]
Represents the August 2024 Pre Funded Warrants.
The August 2024 Underwritten Offering [Member]
Represents the August 2024 Underwritten Offering.
The August 2024 Warrants [Member]
Represents the August 2024 Warrants.
Document Annual Report
Existing Warrants, June 2021 [Member]
Represents existing warrants of June 2021.
us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit
Deferred income taxes
The amount of deferred income taxes
Existing Warrants, November 2023 [Member]
Represents existing warrants of November 2023.
Cash and Cash Equivalents, Policy [Policy Text Block]
Entity Incorporation, State or Country Code
General and Administrative Expense [Member]
us-gaap_UnrecognizedTaxBenefits
Balance
Balance
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Document Transition Report
dei_DocumentFinStmtErrorCorrectionFlag
Document Financial Statement Error Correction [Flag]
Basis of Accounting, Policy [Policy Text Block]
Short-term debt
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
Prior Year Increase/ (Decrease)
Security Exchange Name
Current Year Increase/ (Decrease)
Title of 12(b) Security
Research and Development Expense [Member]
rvph_ClassOfWarrantsOrRightOfferingPrice
Class of Warrants or Right, Offering Price
Per share or per unit amount of warrant offering price.
Statement of Income Location, Balance [Axis]
Statement of Income Location, Balance [Domain]
Nonmonetary Transaction Type [Domain]
March 2026 Common Stock Warrants [Member]
Represents the March 2026 Common Stock Warrants.
Series G Warrants [Member]
Represents the series G warrants.
Series H Warrants [Member]
Represents the series H warrants.
August 2024 Prefunded Warrants and August 2024 Warrants [Member]
Represents August 2024 prefunded warrants and August 2924 warrants.
March 2026 Pre-Funded Warrants [Member]
Represents the March 2026 Pre-Funded Warrants.
Nonmonetary Transaction Type [Axis]
The March 2026 Public Offering [Member]
Represents the March 2026 Public Offering.
dei_AuditorName
Auditor Name
rvph_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.
dei_AuditorFirmId
Auditor Firm ID
rvph_ClassOfWarrantOrRightPublicOfferingPricePerShare
Class of Warrant or Right, Public Offering Price Per Share (in dollars per share)
The public offering price per share for the warrants.
dei_AuditorLocation
Auditor Location
us-gaap_RepaymentsOfShortTermDebt
Repayment of short-term debt
Private Warrants [Member]
Information related to private warrants.
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
Research Tax Credit Carryforward [Member]
Antidilutive securities (in shares)
Equity Incentive Plan 2020 [Member]
Information related to the 2020 Equity Incentive Plan.
Proceeds from issuance of short-term debt
Proceeds from Short-Term Debt
Tax Credit Carryforward [Axis]
Tax Credit Carryforward, Name [Domain]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
rvph_SharebasedCompensationArrangementBySharebasedPaymentAwardMaximumPercentOfIncrease
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Percent of Increase
Represents the maximum percentage of increase, based on total number of common stock outstanding, in shares to be issued under share-based payment arrangement.
Statement [Table]
rvph_IncreaseDecreaseInPrepaidClinicalStudyCosts
Prepaid clinical trial costs (current and non-current)
Amount of increase (decrease) in prepaid clinical study costs
Statement of Financial Position [Abstract]
Prepaid clinical trial costs
Represents current portion prepaid clinical trial costs.
June and September 2025 Warrants [Member]
Represents information pertaining to the June and September 2025 warrants.
Basic and diluted (in shares)
Weighted-average common shares outstanding – basic and diluted (in shares)
Other, percent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate Reconciliation, Percent
Basic and diluted (in dollars per share)
Changes in valuation allowances, percent
Statement of Cash Flows [Abstract]
The Market Offering Agreement "ATM Agreement" [Member]
Information on an At The Market Offering Agreement (the “ATM Agreement”).
Statement of Stockholders' Equity [Abstract]
Lease Contractual Term [Domain]
Lease Contractual Term [Axis]
Income Statement [Abstract]
Corporate Office Lease 2 [Member]
Represents second corporate office lease.
State true up
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 state up.
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Nontaxable or nondeductible items, percent
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
State and local income taxes, net of federal income tax effect, percent
Other Commitments [Table]
Foreign tax effects - India, percent
Financing for Liability Insurance Policy Premiums [Member]
Represents financing for liability insurance policy premiums.
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Other
Other
Cash flows from financing activities
U.S Federal statutory tax rate, percent
Changes in valuation allowances
Warrant liabilities
rvph_NumberOfVendors
Number of Vendors
Represents the number of vendors during the period.
Research and Development Costs [Member]
Relating to research and development costs.
Pre Public Private Company Warrants [Member]
Relating to Pre Public Private Company Warrants.
June 2021 Common Stock Warrants [Member]
Relating to June 2021 Common Stock Warrants.
September 2022 Common Stock Warrants [Member]
Relating to September 2022 Common Stock Warrants.
September 2022 Private Pre Funded Warrants [Member]
Relating to September 2022 private pre Funded Warrants.
Vendor Two [Member]
Relating to vendor two.
Vendor One [Member]
Relating to vendor one.
us-gaap_StockholdersEquity
Total stockholders' equity
Balance
Balance
SPAC Public Warrants [Member]
Relating to SPAC Public Warrants.
August Amended November 2023 Common Stock Warrants [Member]
Relating to August Amended November 2023 Common Stock Warrants.
May Amended November 2023 Common Stock Warrants [Member]
Relating to May Amended November 2023 Common Stock Warrants.
August 2024 Common Stock Warrants [Member]
Relating to August 2024 Common Stock Warrants.
May 2024 Common Stock Warrants [Member]
Relating to May 2024 Common Stock Warrants.
Nontaxable or nondeductible items
November 2023 Pre Funded Warrants [Member]
Relating to November 2023 Pre Funded Warrants.
Class of Stock [Axis]
Supplier [Axis]
November 2023 Common Stock Warrants [Member]
Relating to November 2023 Common Stock Warrants.
Class of Stock [Domain]
Supplier [Domain]
Amended June 2021 Common Stock Warrants [Member]
Relating to Amended June 2021 Common Stock Warrants.
Stock-based compensation
Accruals and reserves
Amount before allocation of valuation allowances of deferred tax asset (liabilities) attributable to deductible temporary differences from reserves and accruals.
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Warrant expense
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 warrant expense.
State and local income taxes, net of federal income tax effect
Foreign tax effects - India