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Note 5 - Prepaid Expenses and Other Current Assets (Tables) | 12 Months Ended
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Dec. 31, 2022
Notes Tables |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
|  | December 31, |  |  | December 31, |
(in thousands) |  | 2022 |  |  | 2021 |
Prepaid inventory |  | $ | 211 |  |  | $ | 368 |
Prepaid insurance |  |  | 146 |  |  |  | 138 |
Prepaid dues and subscriptions |  |  | 43 |  |  |  | 18 |
Prepaid marketing costs |  |  | 24 |  |  |  | 15 |
Prepaid patents |  |  | 12 |  |  |  | 9 |
Tenant Allowance |  |  | 11 |  |  |  | - |
Prepaid consultants |  |  | - |  |  |  | 68 |
Prepaid sales rebates |  |  | - |  |  |  | 19 |
Prepaid rent |  |  | - |  |  |  | 14 |
Other |  |  | 113 |  |  |  | 129 |
Total prepaid expenses and other current assets |  | $ | 560 |  |  | $ | 778 |

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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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