Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net income for basic and diluted earnings per share	$ 1,893	$ 1,317
Denominator:
Denominator for basic earnings per share - weighted average shares	27,130	27,130
Effect of dilutive securities on denominator:
Options	0	0
Denominator for diluted earnings per share - weighted average shares and assumed conversions	27,130	27,130
Net income per share:
Basic and diluted income per share	$ 0.07	$ 0.05