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Note 18 - Related Party Transactions (Tables) | 9 Months Ended
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Sep. 30, 2022
Notes Tables |
Schedule of Related Party Transactions [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Related party revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NeutroPhase |  | $ | — |  |  | $ | — |  |  | $ | 657 |  |  | $ | 175 |
Total related party revenue |  | $ | — |  |  | $ | — |  |  | $ | 657 |  |  | $ | 175 |
Cost of goods sold: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
NeutroPhase |  | $ | — |  |  | $ | — |  |  | $ | 648 |  |  | $ | 131 |
Total related party expenses |  | $ | — |  |  | $ | — |  |  | $ | 648 |  |  | $ | 131 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration