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Note 16 - Dermadoctor Divestiture (Details Textual) - Discontinued Operations, Disposed of by Sale [Member] - DERMAdoctor [Member] - USD ($) $ in Thousands |  | 6 Months Ended
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Mar. 25, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disposal Group, Including Discontinued Operation, Percentage Sold | 100.00% |  |
Proceeds from Divestiture of Businesses | $ 1,100 | $ 0 | $ 1,070

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- Definition Percentage of business sold for the disposal of assets and liabilities, including discontinued operation. + References No definition available. + Details
Name: | nby_DisposalGroupIncludingDiscontinuedOperationPercentageSold
Namespace Prefix: | nby_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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