Note 2 - Summary of Significant Accounting Policies - Summary of Level 3 Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended	18 Months Ended
Sep. 30, 2025	Sep. 30, 2025
Change in fair value	$ 1,100
Dissenting Shares [Member]
Balance of Dissenting Shareholders' Liability as of April 1, 2024		$ 0
Initial value upon re-domestication		4,526
Change in fair value		1,103
Cash settlement of dissenting shareholders' liability		(5,629)
Balance of Dissenting Shareholders' Liability as of September 30, 2025	$ 0	$ 0

Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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