Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net (loss)	$ (988)	$ (529)	$ (2,851)	$ (1,974)
Denominator:
Denominator for basic and diluted earnings per share — weighted average shares	21,043	21,637	21,043	22,221
Net (loss) per share:
Basic and diluted (loss) per share	$ (0.05)	$ (0.02)	$ (0.14)	$ (0.09)