XML 70 R39.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Common Stock - Equity Offering (Details) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 102 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 08, 2024 USD ($) $ / shares shares | Jan. 04, 2024 USD ($) tranche $ / shares | Jun. 30, 2024 USD ($) shares | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) shares | Jun. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) shares | Mar. 04, 2024 USD ($) shares | Mar. 03, 2024 shares | Dec. 31, 2023 shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement |  |  |  |  |  |  | $ 430,900 |  |  |
Reclassification of future tranche right liability upon settlement |  |  |  |  |  |  |  | $ 4,800 |  |
Common stock, shares authorized (in shares) | shares | 130,000,000 |  | 500,000,000 |  | 500,000,000 |  | 500,000,000 | 500,000,000 |  | 130,000,000
Change in fair value of the tranche rights |  |  | $ 0 | $ 0 | $ 4,796 | $ 0 |  |  |  |
Equity |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Change in fair value of the tranche rights |  |  |  |  | 4,000 |  |  |  |  |
Other Nonoperating Income (Expense) |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Change in fair value of the tranche rights |  |  |  |  | $ 1,700 |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | shares |  |  |  |  |  |  |  | 130,000,000 |  |
Maximum |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | shares |  |  |  |  |  |  |  | 500,000,000 |  |
Common Stock | Common Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Reclassification of future tranche right liability upon settlement | $ 23,600 |  |  |  |  |  |  |  |  |
Common stock, shares authorized (in shares) | shares |  |  |  |  |  |  |  | 500,000,000 | 130,000,000 |
Private Placement | Common Stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Private placement, number of tranche | tranche |  | 3 |  |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) | $ / shares |  | $ 0.0001 |  |  |  |  |  |  |  |
Private Placement | Common Stock | Tranche 1 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement | $ 80,000 |  |  |  |  |  |  |  |  |
Private Placement | Common Stock | Tranche 2 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement |  | $ 80,000 |  |  |  |  |  |  |  |
Private Placement | Common Stock | Tranche 3 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement |  | $ 80,000 |  |  |  |  |  |  |  |
Private Placement | Pre-Funded Warrants |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) | $ / shares |  | $ 0.0001 |  |  |  |  |  |  |  |
Private Placement | Accredited Investors |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of private placement |  | $ 240,000 |  |  |  |  |  |  |  |
Private Placement | Accredited Investors | Common Stock | Tranche 1 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) | $ / shares | $ 1.43 |  |  |  |  |  |  |  |  |
Consideration received on transaction | $ 80,000 |  |  |  |  |  |  |  |  |
Number of shares registered for resale | shares | 55,944,850 |  |  |  |  |  |  |  |  |
Private Placement | Accredited Investors | Common Stock | Tranche 2 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share (in USD per share) | $ / shares |  | $ 1.716 |  |  |  |  |  |  |  |
Consideration received on transaction |  | $ 80,000 |  |  |  |  |  |  |  |
Sale of stock, consideration received, percentage |  | 120.00% |  |  |  |  |  |  |  |
Number of tranche subjected to condition | tranche |  | 3 |  |  |  |  |  |  |  |
Threshold trading days for weighted average price calculation |  | 10 days |  |  |  |  |  |  |  |
Weighted average price (in USD per share) | $ / shares |  | $ 8.00 |  |  |  |  |  |  |  |
Threshold trading days for aggregate trading volume calculation |  | 10 days |  |  |  |  |  |  |  |
Aggregate trading volume of last 10 days |  | $ 100,000 |  |  |  |  |  |  |  |
Private Placement | Accredited Investors | Common Stock | Tranche 3 |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Consideration received on transaction |  | $ 80,000 |  |  |  |  |  |  |  |
Third tranche close period after second tranche (in years) |  | 3 years |  |  |  |  |  |  |  |
Common Stock and Pre-funded Warrants | Common Stock and Pre-funded Warrants |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Tranche rights as a liability, remainder amount | $ 80,000 |  |  |  |  |  |  |  |  |
Tranche rights as a liability, received amount | $ 56,400 |  |  |  |  |  |  |  |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 272 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483014/272-10-45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 272 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482987/272-10-50-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-14 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-18 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(2)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-03(i)(2)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479886/946-10-S99-3 + Details
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 + Details
Name: | us-gaap_CommonStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-14 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash received on stock transaction after deduction of issuance costs. + References No definition available. + Details
Name: | us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Common Stock, Number Of Shares Registered For Resale + References No definition available. + Details
Name: | vtl_CommonStockNumberOfSharesRegisteredForResale
Namespace Prefix: | vtl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair Value, Change in Fair Value of Tranche Rights, Transaction Costs + References No definition available. + Details
Name: | vtl_FairValueChangeInFairValueOfTrancheRightsTransactionCosts
Namespace Prefix: | vtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair Value, Reclassification of Future Tranche Right Liability Upon Settlement + References No definition available. + Details
Name: | vtl_FairValueReclassificationOfFutureTrancheRightLiabilityUponSettlement
Namespace Prefix: | vtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Sale of Stock, Aggregate Trading Volume of Last 10 Days + References No definition available. + Details
Name: | vtl_SaleOfStockAggregateTradingVolumeOfLast10Days
Namespace Prefix: | vtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sale of Stock, Consideration Received, Percentage + References No definition available. + Details
Name: | vtl_SaleOfStockConsiderationReceivedPercentage
Namespace Prefix: | vtl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale of Stock, Equity Offerings, Period + References No definition available. + Details
Name: | vtl_SaleOfStockEquityOfferingsPeriod
Namespace Prefix: | vtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sale of Stock, Number of Tranche Conditions + References No definition available. + Details
Name: | vtl_SaleOfStockNumberOfTrancheConditions
Namespace Prefix: | vtl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale of Stock, Private Placement, Number of Tranche + References No definition available. + Details
Name: | vtl_SaleOfStockPrivatePlacementNumberOfTranche
Namespace Prefix: | vtl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Threshold Trading Days for Aggregate Trading Volume Calculation + References No definition available. + Details
Name: | vtl_ThresholdTradingDaysForAggregateTradingVolumeCalculation
Namespace Prefix: | vtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold Trading Days for Weighted Average Price Calculation + References No definition available. + Details
Name: | vtl_ThresholdTradingDaysForWeightedAveragePriceCalculation
Namespace Prefix: | vtl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tranche Rights as a Liability, Received Amount + References No definition available. + Details
Name: | vtl_TrancheRightsAsALiabilityReceivedAmount
Namespace Prefix: | vtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Tranche Rights as a Liability, Remainder Amount + References No definition available. + Details
Name: | vtl_TrancheRightsAsALiabilityRemainderAmount
Namespace Prefix: | vtl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Weighted Average Price of Last 10 Days + References No definition available. + Details
Name: | vtl_WeightedAveragePriceOfLast10Days
Namespace Prefix: | vtl_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_EquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=vtl_PreFundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=vtl_AccreditedInvestorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=vtl_CommonStockAndPreFundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=vtl_CommonStockAndPreFundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |