Computation of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Numerator:
Net (loss) income	$ (1,381)	$ 1,693	$ 376	$ 7,480
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 (loss) earnings per share	$ (0.05)	$ 0.06	$ 0.01	$ 0.28