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Note 10 - Convertible Note - Contractual Maturity (Details) $ in Thousands | Mar. 31, 2024 USD ($)
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Original Issue Discount Senior Secured Convertible Debentures [Member] |
Label | $ 1,314

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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3 + Details
Name: | us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DebtInstrumentAxis=nby_OriginalIssueDiscountSeniorSecuredConvertibleDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |