Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:
Net income	$ 47	$ 388	$ 698	$ 1,757
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)
Denominator for diluted earnings per share - weighted average shares and assumed conversions	27,130	27,130	27,130	27,130
Basic and diluted earnings per share	$ 0.00	$ 0.01	$ 0.03	$ 0.21