Note 9 - Net Income (Loss) Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Numerator:
Net (loss)	$ (4,300)	$ (4,731)
Weighted average shares outstanding
Basic (in shares)	21,042,652	21,042,652
Net (loss) per share:
Basic (loss) per share (in dollars per share)	$ (0.2)	$ (0.22)