Note 14 - Debt (Details Textual) $ in Thousands	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	May 06, 2021
Debt, Current	$ 9	$ 25
Equipment Financing Agreements Assumed In Business Acquisition [Member]
Debt, Current	$ 100	$ 100
Neeltran Inc. [Member]
Business Combination, Number of Equipment Financing Agreement Assumed			4