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Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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Date of maturity or expiration of arrangements with a related party (for example, but not limited to, leasing and debt arrangements between related parties), in YYYY-MM-DD format.

No definition available.

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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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

No definition available.

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The period of related party transaction represents agreement termination notice.

No definition available.

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The period of related party transaction represents expiration month year.

No definition available.

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The period of related party transaction represents renewed year.

No definition available.

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Name:	srt_CounterpartyNameAxis=viot_XiaomiMember
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Name:	us-gaap_RelatedPartyTransactionAxis=viot_BusinessCorporationAgreementMember
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Data Type:	na
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Period Type:

Name:	us-gaap_RelatedPartyTransactionAxis=viot_YoupinCommissionSalesAgreementMember
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Data Type:	na
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Name:	srt_CounterpartyNameAxis=viot_FoshanYunmiElectricAppliancesTechnologyCompanyLimitedMember
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Data Type:	na
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