Note 17 - Stockholders' Equity - Summary of Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member]	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Expected volatility	88.57%
Expected volatility, minimum		78.20%
Expected volatility, maximum		83.10%
Dividend yield	0.00%	0.00%
Risk-free rate	4.12%
Risk-free rate, minimum		3.11%
Risk-free rate, maximum		3.14%
Expected term (in years) (Year)	5 years 2 months 4 days
Minimum [Member]
Expected term (in years) (Year)		5 years 4 months 9 days
Maximum [Member]
Expected term (in years) (Year)		6 years 11 months 8 days