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v3.25.2

Note 2 - Warrant Liability and Fair Value of Financial Instruments (Details Textual) $ / shares in Units, $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 07, 2023 USD ($) $ / shares | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Jan. 29, 2024 USD ($) shares | Dec. 31, 2023 $ / shares
Gain (Loss) on Derivative Instruments, Net, Pretax |  |  | $ (0) | $ (4,556) |  |
Fair Value Adjustment of Warrants |  |  | (0) | $ 3,444 |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  | $ 0.02
The Warrant [Member] | Termination Agreement [Member] |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares | $ 0.02 |  |  |  |  |
Class of Warrant or Right, Value of Securities Called by Warrants or Rights | $ 8,000 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares |  |  |  |  | 80,000 |
Warrants and Rights Outstanding |  |  |  |  | $ 8,000 |
Measurement Input, Probability Rate [Member] | Valuation, Probability-weighted Expected Return Method (PWERM) [Member] | Qualified Offering Occurring, One [Member] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 0.70 | [1] |  |  |  | 0.70
Measurement Input, Probability Rate [Member] | Valuation, Probability-weighted Expected Return Method (PWERM) [Member] | Qualified Offering Occurring, Two [Member] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 0.10 | [1] |  |  |  | 0.10
Measurement Input, Probability Rate [Member] | Valuation, Probability-weighted Expected Return Method (PWERM) [Member] | No Qualified Offering Occurring [Member] |  |  |  |  |  |
Warrants and Rights Outstanding, Measurement Input | 0.20 | [1] |  |  |  | 0.20
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Assets, Fair Value Disclosure |  |  | $ 0 |  |  |
[1] | Scenario probability as of issuance was based on timing expectations of management that a qualified offering occurring as of December 31, 2023 was estimated at 70%, respectively; a qualified offering occurring as of June 30, 2024 was estimated at 10%; and no qualified offering occurring was estimated at 20%;

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