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Commitments and Contingencies - Schedule of Capital and Other Commitment (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($)
Commitments And Contingencies Disclosure [Abstract] |
Property, plant and equipment | $ 116,527

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Capital expenditures contracted for but not recognized. + References No definition available. + Details
Name: | viot_CapitalExpendituresContractedForButNotRecognized
Namespace Prefix: | viot_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration