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Note 7 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2025
Operating Lease, Impairment Loss	$ 84	$ 643
Office Space for Corporate Headquarters in Emeryville, California [Member]
Operating Lease, Impairment Loss	$ 84	$ 643

X

- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479365/842-20-25-6

+ Details

Name:	us-gaap_OperatingLeaseImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nby_OfficeSpaceForCorporateHeadquartersInEmeryvilleCaliforniaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: