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v3.23.1

Note 15 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 02, 2023 | Jan. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Jul. 02, 2021
Proceeds from Issuance of Common Stock |  |  | $ 21,636 | $ 32,459 |
New Loan [Member] |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 7.00%
Subsequent Event [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 10,500,000 |  |  |
Shares Issued, Price Per Share (in dollars per share) |  | $ 3.84 |  |  |
Proceeds from Issuance of Common Stock, Gross |  | $ 40,320 |  |  |
Proceeds from Issuance of Common Stock |  | 38,500 |  |  |
Subsequent Event [Member] | New Loan [Member] |  |  |  |  |
Repayments of Debt | $ 15,000 | $ 15,000 |  |  |
Subsequent Event [Member] | First Amended Credit Agreement [Member] |  |  |  |  |
Long-Term Debt, Gross | $ 15,000 |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 4.80 |  |  |  |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger | 115.00% |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.00% |  |  |  |
Interest Expense, Long-Term Debt, Total | $ 20,000 |  |  |  |

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