Note 6 - Intangible assets and Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, beginning of the year	$ 8,138	$ 12,964
Impairment of goodwill	0	(4,826)
Goodwill, end of the year	$ 8,138	$ 8,138