STOCK PLANS Transactions under 1999 Stock Option Plan and 2007 Equity Incentive Plan (Detail) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Stock Options, Number of Shares
Beginning outstanding balance (in shares)	154,000	240,892	325,519
Granted (in shares)	0	0	0
Exercised (Options)/Issued (RSU’s) (in shares)	(117,650)	(86,892)	(84,502)
Canceled (in shares)	(5,000)	0	(125)
Ending outstanding balance (in shares)	31,350	154,000	240,892
Stock Options, Weighted Average Exercise Price
Beginning outstanding balance (in dollars per share)	$ 6.63	$ 6.63	$ 6.35
Granted (in dollars per share)	$ 0.00	$ 0.00	$ 0.00
Exercised (Options)/Issued (RSU’s) (in dollars per share)	$ 6.91	$ 6.62	$ 5.58
Canceled (in dollars per share)	$ 3.76	$ 0.00	$ 5.26
Ending outstanding balance (in dollars per share)	$ 5.87	$ 6.63	$ 6.63
Restricted Stock Units, Number of Awards
Beginning outstanding balance (in shares)	1,870,826	1,755,325	1,418,859
Granted (in shares)	602,359	764,893	1,071,131
Exercised (Options)/Issued (RSU’s) (in shares)	(635,254)	(549,932)	(659,350)
Canceled (in shares)	(99,632)	(99,460)	(75,315)
Ending outstanding balance (in shares)	1,738,299	1,870,826	1,755,325
Restricted Stock Units, Weighted Average Fair Value
Beginning outstanding balance (in dollars per share)	$ 17.85	$ 13.33	$ 12.35
Granted (in dollars per share)	$ 25.75	$ 24.19	$ 13.36
Exercised (Options)/Issued (RSU’s) (in dollars per share)	$ 25.35	$ 12.52	$ 11.26
Canceled (in dollars per share)	$ 17.61	$ 16.10	$ 13.60
Ending outstanding balance (in dollars per share)	$ 20.95	$ 17.85	$ 13.33