Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net (loss) income	$ (710)	$ 47	$ (589)	$ 698
Denominator:
Denominator for basic earnings per share - weighted average shares	27,130	27,130	27,130	27,130
Effect of dilutive securities on denominator:
Options (computed using the treasury stock method)	0	0	0	0
Denominator for diluted earnings per share - weighted average shares and assumed conversions	27,130	27,130	27,130	27,130
Basic and diluted (loss) earnings per share	$ (0.03)	$ 0.00	$ (0.02)	$ 0.03