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Related Parties - Additional Information (Detail) - Viscient [Member] - USD ($)	3 Months Ended	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2022
Related Party Transaction [Line Items]
Consulting expenses	$ 0	$ 0
Histology services to related parties	$ 17,000	$ 44,000

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: