Note 17 - Stockholders' Equity (Tables)

12 Months Ended

Mar. 31, 2024

Notes Tables

Share-Based Payment Arrangement, Activity [Table Text Block]

	Year Ended March 31,
	2024		2023
Number of options granted		25,000		43,000
Weighted-average exercise price per share	$	1.75	$	1.10
Weighted-average grant date fair value per share	$	1.75	$	1.10

	Year Ended March 31,
	2024		2023
Number of units granted		2,075,756		1,172,380
Weighted-average grant date fair value per share	$	1.71	$	1.73

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended March 31,
	2024			2023
Expected volatility		88.57	%		78.20% - 83.10%
Dividend yield		-	%		-	%
Risk-free rate		4.12	%		3.11% - 3.14%
Expected term (in years)		5.18			5.36 - 6.94

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

				Weighted-Average
				Exercise Price per
	Number of Shares			Share
Outstanding as of April 1, 2022		3,565,191		$	3.78
Granted		43,000			1.10
Forfeited or expired		(1,191,524	)		3.71
Outstanding as of March 31, 2023		2,416,667			3.75
Granted		25,000			1.75
Exercised		(10,000	)		0.81
Forfeited or expired		(165,000	)		3.88
Outstanding as of March 31, 2024		2,266,667		$	3.73
Exercisable as of March 31, 2024		2,224,167		$	3.74

			Weighted-Average
			Exercise Price per
	Number of Shares		Share
Outstanding as of April 1, 2022		25,000	$	4.00
Granted		-		-
Exercised		-		-
Forfeited or expired		-		-
Outstanding as of March 31, 2023		25,000		4.00
Granted		-		-
Exercised		-		-
Forfeited or expired		-		-
Outstanding as of March 31, 2024		25,000	$	4.00
Exercisable as of March 31, 2024		25,000	$	4.00

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Number of Shares
Outstanding as of April 1, 2022		3,064,285
Granted		1,172,380
Vested		(2,136,679	)
Cancelled		(429,011	)
Outstanding as of March 31, 2023		1,670,975
Granted		2,075,756
Vested		(1,850,576	)
Cancelled		(50,000	)
Outstanding as of March 31, 2024		1,846,155