Stock Based Compensation - Additional Information (Detail) - $ / shares	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	0	0
Employee Stock Option Plan, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares of common stock available				2,500,000
Options outstanding	0
Weighted Average Exercise Price, Exercisable	$ 0	$ 0
Non Employee Director Stock Options Plan, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum aggregate number of shares of common stock available				250,000
Options outstanding	0	0	50,000
Weighted Average Exercise Price, Exercisable	$ 0.00	$ 3.13
Options granted	0	0