| Document and Entity Information | Sep. 14, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001497253 |
| Document Type | 8-K |
| Document Period End Date | Sep. 14, 2021 |
| Entity Registrant Name | ORGANOVO HOLDINGS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-35996 |
| Entity Tax Identification Number | 27-1488943 |
| Entity Address, Address Line One | 440 Stevens Avenue |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Solana Beach |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92075 |
| City Area Code | (858) |
| Local Phone Number | 224-1000 |
| Written Communications | false |
| Soliciting Material | true |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.001 Par Value |
| Trading Symbol | ONVO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
