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v3.23.2

Related Parties - Additional Information (Detail) - Viscient [Member] - USD ($) | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Related Party Transaction [Line Items] |  |
Consulting expenses | $ 0 | $ 47,000
Histology services to related parties | $ 59,000 | $ 48,000

X
- Definition Consulting expenses. + References No definition available. + Details
Name: | onvo_ConsultingExpenses
Namespace Prefix: | onvo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Histology services to related parties. + References No definition available. + Details
Name: | onvo_HistologyServicesToRelatedParties
Namespace Prefix: | onvo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=onvo_ViscientBiosciencesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |