Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Numerator:
Net income	$ 651	$ 1,369
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)
Denominator for diluted earnings per share - weighted average shares and assumed conversions	27,130	27,130
Basic and diluted earnings per share	$ 0.02	$ 0.05