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Note 11 - Warrant Dividend Distribution (Details Textual) - USD ($) |  |  | 1 Months Ended | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 03, 2024 | Dec. 22, 2023 | May 02, 2024 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024 | Mar. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2024 | Sep. 30, 2024 | May 07, 2024 | Jan. 02, 2024
Warrants and Rights Outstanding |  |  |  |  |  |  |  |  |  |  |  | $ 113,363,000
Proceeds from Warrant Exercises |  |  |  | $ 0 |  |  | $ 22,160,000 |  |  |  |  |
Warrants to Purchase Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Class Of Warrant Or Right Issued During Period (in shares) | 16,900,000 | 4 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 10 |  | 5,700,000 |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 33 |  |  | $ 22 |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | 1.5 |  |  |  |  | 1.5 | 1.5 | 1.5 |  |  |  |
Redemption Percentage of Warrants |  |  |  |  |  |  |  |  |  |  | 0.10% |
Warrant Redemption Price (in dollars per share) |  |  |  |  |  |  |  |  |  |  | $ 0.01 |
Warrants and Rights Outstanding |  |  |  | $ 0 | $ 0 | $ 65,368,000 | $ 65,368,000 | $ 65,368,000 | $ 0 | $ 0 |  |
Class of Warrant or Right, Exercised During Period (in shares) |  |  |  |  | 3,152,000 | 674,000 |  | 674,000 |  |  |  |
Proceeds from Warrant Exercises |  |  |  |  |  | $ 22,300,000 |  |  |  |  |  |
Stock Issued During Period, Shares, Warrant Exercises (in shares) |  |  | 4.7 |  |  | 1 |  |  |  |  |  |
Gross Proceeds From Issuance of Warrants |  |  |  | 126,300,000 |  |  |  |  |  |  |  |
Proceeds from Issuance of Warrants |  |  |  | 123,600,000 |  |  |  |  |  |  |  |
Proceeds From Warrants Exercised That Obligated to Pay Commission |  |  |  |  |  | $ 20,000,000 |  |  |  |  |  |
Commission Percentage of Gross Proceeds |  |  |  |  |  | 2.50% |  |  |  |  |  |
Payments of Warrant Exercise Costs |  |  |  | $ 2,700,000 |  |  |  |  |  |  |  |
Payments of Stock Issuance Costs | $ 537,000 |  |  |  |  |  |  |  |  |  |  |

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