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Note 7 - Long-term Debt (Details Textual) - USD ($) |  |  |  |  |  |  | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 06, 2024 | Feb. 02, 2023 | Jan. 30, 2023 | Jul. 02, 2021 | Jul. 01, 2021 | Jun. 29, 2021 | Sep. 30, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Nov. 05, 2024 | Aug. 14, 2023
Debt Instrument, Unamortized Discount |  |  |  |  |  |  |  | $ 3,802,000 | $ 554,000 |  |
Unrealized Gain (Loss) on Derivatives |  |  |  |  |  |  |  | (0) | $ (220,000) |  |
Adjustment to Additional Paid-in Capital, Extinguishment of Debt | $ 1,900,000 |  |  |  |  |  |  | 1,928,000 |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued |  |  |  |  |  |  |  | $ 887,000 |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  | 8.875% | 8.875% |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 8.875% | 8.875% | 8.875% |  | 8.875% | 8.875% |  |
Conversion Option on Debt [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Liability |  | $ 2,400,000 |  |  |  |  |  |  |  |  |
Unrealized Gain (Loss) on Derivatives |  |  |  |  |  |  | $ 220,000 |  |  |  |
Conversion Option on Debt [Member] | Reclassified to Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |  |  |  |
Derivative Liability |  |  |  |  |  |  |  |  |  |  | $ 2,570,000
Warrants Issued to Lenders [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) |  |  |  | 500,000 |  |  |  |  |  |  |
Warrants and Rights Outstanding |  |  |  | $ 1,900,000 |  |  |  |  |  |  |
Heerema Warrant [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | 1,000,000 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 5 |  |  |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued | $ 900,000 |  |  |  |  |  |  |  |  |  |
New Loan [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 50,000,000 |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.00% |  | 7.00% |  |  |  |  |  |  |
Repayments of Debt |  | $ 15,000,000 | $ 15,000,000 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Maximum Amount |  | $ 15,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) |  | $ 4.8 |  |  |  |  |  |  |  |  |
Debt Instrument, Principal Amount with Interest Paid in Cash |  | $ 20,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Principal Amount with Interest Paid in Kind |  | 15,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  | 2,000,000 |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Beneficial Conversion Feature |  | $ 980,000 |  |  |  |  |  |  |  |  |
New Loan [Member] | Repayment After Thirty-months of the Closing Date [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Repayment Fee Percentage |  |  |  | 6.00% |  |  |  |  |  |  |
New Loan [Member] | Issuance After One Year of the Closing Date [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Prepay Amount, Percentage of the Cash Proceeds Received |  |  |  | 75.00% |  |  |  |  |  |  |
Their Amended Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | 20,000,000 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount | $ 479,845 |  |  |  |  |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 2.89 |  |  |  |  |  |  |  |  |  |
Shares Issued For Debt Agreement, Shares (in shares) | 166,036 |  |  |  |  |  |  |  |  |  |
Secured Non Convertible Terms Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 21,200,000 |  |  |  |  |  |  |  | $ 20,000,000 |  |
Convertible Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 16,000,000 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.00% |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 5.3 |  |  |  |  |  |  |  |  | $ 5.14 |

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