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, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net (loss)	$ (529)	$ (1,171)	$ (1,974)	$ (3,103)
Denominator:
Denominator for basic and diluted earnings per share — weighted average shares	21,637	24,299	22,221	25,857
Net (loss) per share:
Basic and diluted (loss) per share	$ (0.02)	$ (0.05)	$ (0.09)	$ (0.12)