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Note 11 - Common Stock Warrants - Outstanding Warrants (Details) - $ / shares shares in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Outstanding warrants (in shares) | 7,382,447 | 2,305,519
Outstanding warrants, weighted-average exercise price (in dollars per share) | $ 1.82 | $ 7.7
Warrants granted (in shares) | 1,000,000 | 0
Warrants granted, weighted average exercise price (in dollars per share) | $ 0.14 | $ 0
Warrants exercised (in shares) | (0) | 0
Warrants exercised, weighted-average exercise price (in dollars per share) | $ 0 | $ 0
Warrants expired (in shares) | 0 | 0
Warrants expired, weighted average exercise price (in dollars per share) | $ 0 | $ 0
Warrants exercised (in shares) | 0 | 0
Outstanding warrants (in shares) | 8,382,447 | 2,305,519
Outstanding warrants, weighted-average exercise price (in dollars per share) | $ 1.6 | $ 7.7

X
- Definition The number of warrants or rights exercised during period. + References No definition available. + Details
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Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price per share of warrants or rights exercised during period. + References No definition available. + Details
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Namespace Prefix: | nby_
Data Type: | dtr-types:perShareItemType
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X
- Definition The number of warrants or rights forfeited during period. + References No definition available. + Details
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Namespace Prefix: | nby_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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X
- Definition Weighted average exercise price per share of warrants or rights forfeited during period. + References No definition available. + Details
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Namespace Prefix: | nby_
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- Definition The number of warrants or rights issued during period. + References No definition available. + Details
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X
- Definition Weighted average exercise price per share of warrants or rights issued during period. + References No definition available. + Details
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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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Balance Type: | na
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X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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