Subsequent Events - Additional Information (Detail)	Apr. 17, 2020 CalendarDay
Subsequent Events [Abstract]
Compliance periods for bid price and market value of publicly held shares	66

Compliance periods for bid price and market value of publicly held shares.

No definition available.

Name:	onvo_CompliancePeriodsForBidPriceAndMarketValueOfPubliclyHeldShares
Namespace Prefix:	onvo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration