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Document and Entity Information - USD ($)
 12 Months Ended
Mar. 31, 2024
May 25, 2024
Sep. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Mar. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Trading Symbol ONVO    
Entity Registrant Name ORGANOVO HOLDINGS, INC.    
Entity Central Index Key 0001497253    
Current Fiscal Year End Date --03-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding   14,371,826  
Entity Public Float     $ 10,340,301
Entity File Number 001-35996    
Entity Tax Identification Number 27-1488943    
Entity Address, Address Line One 11555 Sorrento Valley Rd    
Entity Address, Address Line Two Suite 100    
Entity Address, City or Town San Diego    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92121    
City Area Code 858    
Local Phone Number 224-1000    
Document Annual Report true    
Document Transition Report false    
Entity Interactive Data Current Yes    
Document Financial Statement Error Correction [Flag] false    
Entity Incorporation, State or Country Code DE    
Security Exchange Name NASDAQ    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Auditor Name Rosenberg Rich Baker Berman, P.A.    
Auditor Firm ID 89    
Auditor Location Somerset, NJ    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

Certain information required for Part III of this report is incorporated herein by reference to the definitive proxy statement for the 2024 annual meeting of the registrant’s stockholders, expected to be filed within 120 days of the end of the registrant’s fiscal year.