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Commitments and Contingencies - Additional Information (Detail) |  | 3 Months Ended
--- | --- | ---
Nov. 15, 2021 USD ($) ft² | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($)
Commitments And Contingencies [Line Items] |  |  |
Lease Commencement Date |  | Mar. 01, 2022 |
Lease expiration date |  | Jul. 31, 2027 |
Monthly base rent payments |  | $ 86,000 | $ 86,000
Operating lease option to extend term | 5 years |  |
Office Lease [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Operating lease option to extend term |  | 5 years |
California [Member] | Office Lease [Member] |  |  |
Commitments And Contingencies [Line Items] |  |  |
Area of lease premises | ft² | 7,940 |  |
Monthly base rent payments | $ 28,187 |  |
Percentage of rent increase under lease | 3.00% |  |

X
- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_LeaseExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net rentable area for properties owned. + References No definition available. + Details
Name: | us-gaap_NetRentableArea
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Commitments and contingencies. + References No definition available. + Details
Name: | vktx_CommitmentsAndContingenciesLineItems
Namespace Prefix: | vktx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Lease commencement date. + References No definition available. + Details
Name: | vktx_LeaseCommencementDate
Namespace Prefix: | vktx_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating lease option to extend term. + References No definition available. + Details
Name: | vktx_OperatingLeaseOptionToExtendTerm
Namespace Prefix: | vktx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating lease rentals annual increase percentage. + References No definition available. + Details
Name: | vktx_OperatingLeaseRentalsAnnualIncreasePercentage
Namespace Prefix: | vktx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=vktx_OfficeLeaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |