Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (4,307)	$ (2,437)
Denominator:
Denominator for basic and diluted loss per share — weighted average shares	21,043	21,931
Net loss per share:
Basic and diluted loss per share	$ (0.20)	$ (0.11)