Computation of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (3,626)	$ (3,976)
Denominator:
Denominator for basic and diluted loss per share — weighted average shares	21,043	21,043
Net loss per share:
Basic and diluted loss per share	$ (0.17)	$ (0.19)