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Note 18 - Subsequent Events (Details Textual) - Avenova Assets [Member] - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] - USD ($) $ in Thousands | Jul. 21, 2025 | Jan. 17, 2025 | Nov. 05, 2024
--- | --- | --- | ---
Disposal Group, Including Discontinued Operation, Consideration |  | $ 11,500 | $ 11,500
Subsequent Event [Member] |  |  |
Disposal Group, Including Discontinued Operation, Consideration | $ 134 |  |

X
- Definition Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=nby_AvenovaAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |