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Note 17 - Redeemable Class A Preferred Stock (Details Textual) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended | 18 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2023 USD ($) $ / shares shares | Jun. 30, 2023 $ / shares shares | Jun. 30, 2023 USD ($) $ / shares shares | Dec. 31, 2022 shares
Preferred Stock, Shares Outstanding (in shares) | 0 | 0 | 0 | 149,733
Preferred Stock, Convertible, Conversion Ratio | 6.25 | 6.25 | 6.25 |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | $ 4.00 | $ 4.00 | $ 4.00 |
Preferred Stock Converted into Common Stock [Member] |  |  |  |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | $ 4.00 | $ 4.00 | $ 4.00 |
Conversion of Stock, Shares Converted (in shares) | 30,000 | 149,733 | 149,733 |
Conversion of Stock, Shares Issued (in shares) | 187,500 | 935,831 | 935,831 |
Conversion of Stock, Amount Issued | $ | $ 0.7 |  | $ 3.7 |

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