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Stockholders' Equity - Summary of Warrant Activity (Detail) | 6 Months Ended
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Sep. 30, 2024 $ / shares shares
Common Warrants [Member] |
Class of Warrant or Right [Line Items] |
Number of Warrants, Outstanding, Beginning Balance | shares | 0
Number of Warrants, Issued | shares | 6,562,500
Number of Warrants, Exercised | shares | 0
Number of Warrants, Outstanding, Ending Balance | shares | 6,562,500
Exercise Price, Outstanding, Beginning Balance | $ / shares | $ 0
Exercise Price, Issued | $ / shares | 0.8
Exercise Price, Exercised | $ / shares | 0.8
Exercise Price, Outstanding, Ending Balance | $ / shares | $ 0.8
Pre-Funded Warrants [Member] |
Class of Warrant or Right [Line Items] |
Number of Warrants, Outstanding, Beginning Balance | shares | 0
Number of Warrants, Issued | shares | 5,000,000
Number of Warrants, Exercised | shares | (2,370,000)
Number of Warrants, Outstanding, Ending Balance | shares | 2,630,000
Exercise Price, Outstanding, Beginning Balance | $ / shares | $ 0
Exercise Price, Issued | $ / shares | 0.001
Exercise Price, Exercised | $ / shares | 0.001
Exercise Price, Outstanding, Ending Balance | $ / shares | $ 0.001

X
- Definition Class of warrant or right, exercise price of warrants or rights, exercised. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Class of warrant or right, exercise price of warrants or rights, issued. + References No definition available. + Details
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X
- Definition Class of warrant or rights exercised. + References No definition available. + Details
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Namespace Prefix: | onvo_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of warrant or rights isued. + References No definition available. + Details
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Namespace Prefix: | onvo_
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Balance Type: | na
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X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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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
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X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |