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Note 7 - Current Debt (Details Textual) - Interim Funding AgreementIFA [Member] - USD ($) $ in Millions | 1 Months Ended |
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Aug. 31, 2022 | Dec. 31, 2022
Debt Instrument, Face Amount | $ 13.5 |
Short-Term Debt, Total |  | $ 10.8
Secured Overnight Financing Rate (SOFR) [Member] |  |
Debt Instrument, Basis Spread on Variable Rate | 1.75% |

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