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Note 14 - Related Party Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 13, 2019 | Nov. 30, 2018 | Dec. 31, 2022 | Dec. 31, 2021 | May 31, 2021 | May 14, 2021 | Oct. 31, 2013
Warrants and Rights Outstanding, Term (Year) |  |  | 5 years |  |  |  |
Placement Agent Warrants [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  | $ 4.00 |  | $ 2.85 |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  | 179,536 |  |  | 179,536 |
Warrants and Rights Outstanding, Term (Year) |  |  |  |  |  | 5 years |
Taglich Brothers Inc. [Member] |  |  |  |  |  |  |
Related Party, Ownership Percentage Of Stock |  |  | 3.60% |  |  |  |
Related Party Transaction, Monthly Fees for Services, First Three Months |  | $ 8 |  |  |  |  |
Related Party Transaction, Monthly Fees for Services, After Three Months |  | 5 |  |  |  |  |
Related Party Transaction, Success Fee, Revenue Target Under 5 Million |  | 200 |  |  |  |  |
Related Party Transaction, Success Fee, Revenue Target Over 200 Million |  | $ 1,000 |  |  |  |  |
Taglich Brothers Inc. [Member] | Placement Agent Warrants [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  |  |  |  | 10,926
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  |  |  | $ 761.61
Taglich Brothers Inc. [Member] | Warrants Associated with the February and May 2021 Offerings [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  |  | 82,945 |  |
Taglich Brothers Inc. [Member] | Warrants Associated with the February and May 2021 Offerings [Member] | Weighted Average [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  |  |  | $ 3.21 |  |
Warrants and Rights Outstanding, Term (Year) |  |  |  |  | 5 years |  |
Michael Taglich [Member] |  |  |  |  |  |  |
Stock Issued During Period, Units, New Issues (in shares) | 350 |  |  |  |  |  |
Proceeds from Issuance or Sale of Equity, Total | $ 350 |  |  |  |  |  |
Michael Taglich [Member] | Placement Agent Warrants [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  | $ 1,000 |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  | 1,080 |  |  |  |

X
- Definition The percentage of stock a related party owns. + References No definition available. + Details
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- Definition Amount of monthly fees paid to related party after the first three months + References No definition available. + Details
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- Definition Amount of monthly fees paid to related party during the first three months + References No definition available. + Details
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- Definition The amount of success fee to be paid to the related party for the acquisition target over $20 million. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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