Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Numerator:
Net income	$ 121	$ 651
Denominator:
Denominator for basic earnings per share - weighted average shares	27,130	27,130
Effect of dilutive securities on denominator:
Options (computed using the treasury stock method)	0	0
Denominator for diluted earnings per share - weighted average shares and assumed conversions	27,130	27,130
Basic and diluted earnings per share	$ 0.00	$ 0.02