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Note 19 - Related Party Transactions (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Related Party Transactions [Table Text Block] |
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Related party revenue: |  |  |  |  |  |  |  |  |  |  |  |
NeutroPhase |  | $ | 368 |  |  | $ | 524 |  |  | $ | 209 |
Licensing |  |  | — |  |  |  | — |  |  |  | 41 |
Total related party revenue |  | $ | 368 |  |  | $ | 524 |  |  | $ | 250 |
Cost of goods sold |  |  |  |  |  |  |  |  |  |  |  |
NeutroPhase |  | $ | 325 |  |  | $ | 384 |  |  | $ | 176 |
Licensing |  |  | — |  |  |  | — |  |  |  | — |
Total related party expenses |  | $ | 325 |  |  | $ | 384 |  |  | $ | 176 |
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Commissions to China Kington related to: |  |  |  |  |  |  |  |  |  |  |  |
OP Private Placement |  | $ | — |  |  | $ | — |  |  | $ | — |
June 2019 Private Placement |  |  | — |  |  |  | — |  |  |  | 144 |
August 2019 Private Placement |  |  | — |  |  |  | — |  |  |  | 162 |
Exercise of June 2019 Warrants |  |  | — |  |  |  | 41 |  |  |  | — |
Exercise of 2019 Foreign Warrants |  |  | — |  |  |  | 160 |  |  |  | — |
Promissory Note to Pioneer Pharma (Hong Kong) Company Ltd. |  |  | — |  |  |  | — |  |  |  | 20 |
Total commissions to China Kington |  |  | — |  |  |  | 201 |  |  |  | 326 |
Board Director Bob Wu consulting fee |  |  | — |  |  |  | 50 |  |  |  | 83 |
Total related party expenses |  | $ | — |  |  | $ | 251 |  |  | $ | 409 |

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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
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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