Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Numerator:
Net (loss)	$ (890)	$ (54)
Denominator:
Denominator for basic and diluted earnings per share — weighted average shares	27,061	27,130
Net (loss) per share:
Basic and diluted (loss) per share	$ (0.03)	$ 0.00