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Long-Term Deposits | 12 Months Ended
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Dec. 31, 2021
Long Term Deposits [Abstract] |
Long-Term Deposits |
9. | LONG-TERM DEPOSITS
Long-term deposits balance as of December 31, 2020 and 2021 is primarily denominated in RMB.

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- Definition Long-term deposits. + References No definition available. + Details
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Namespace Prefix: | viot_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Long-term deposits. + References No definition available. + Details
Name: | viot_LongTermDepositsDisclosureTextBlock
Namespace Prefix: | viot_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration