XML 56 R44.htm IDEA: XBRL DOCUMENT
v3.24.3

Fair Value of Financial Instruments - Summarizes the Conclusions Reached Regarding Fair Value Measurements (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Significant Unobservable Inputs (Level 3) |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning Balance | $ 110 | $ 684 |
Net Change in fair value included in earnings | 16 | (406) |
Purchases / Issuance | 0 | 0 |
Sales / Repurchases | 0 | 0 |
Reclass | 0 | 0 |
Ending Balance | 126 | $ 278 |
Significant Unobservable Inputs (Level 3) | Related Party |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning Balance | 110 |  |
Net Change in fair value included in earnings | 173 |  |
Purchases / Issuance | 0 |  |
Sales / Repurchases | 0 |  |
Reclass | (201) |  |
Ending Balance | 82 |  |
Significant Unobservable Inputs (Level 3) | Nonrelated Party |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Net Change in fair value included in earnings | (157) |  |
Purchases / Issuance | 0 |  |
Sales / Repurchases | 0 |  |
Reclass | 201 |  |
Ending Balance | 44 |  |
Fair Value, Measurements, Recurring |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 126 |  | $ 110
Fair Value, Measurements, Recurring | Nonrelated Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 44 |  |
Fair Value, Measurements, Recurring | Warrant liability, related party | Related Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 82 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Nonrelated Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Warrant liability, related party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: |  |  | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Warrant liability, related party | Related Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Nonrelated Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Warrant liability, related party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: |  |  | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Warrant liability, related party | Related Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 0 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 126 |  | 110
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Nonrelated Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | 44 |  |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Warrant liability, related party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: |  |  | $ 110
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Warrant liability, related party | Related Party |  |  |
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items] |  |  |
Liabilities: | $ 82 |  |

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of purchases of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of sales of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Reclass + References No definition available. + Details
Name: | vtvt_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityReclass
Namespace Prefix: | vtvt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair value of assets and liabilities measured on recurring basis. + References No definition available. + Details
Name: | vtvt_FairValueOfAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems
Namespace Prefix: | vtvt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_NonrelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |