TREASURY STOCK - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended				6 Months Ended	144 Months Ended	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jul. 26, 2006	Sep. 17, 2001	Sep. 30, 2013 Open market stock repurchase program	Sep. 30, 2013 Open market stock repurchase program	Sep. 30, 2013 Restricted stock units
Equity, Class of Treasury Stock [Line Items]
Stock authorized to repurchase under stock repurchase program			4,000,000	1,000,000
Additional stock authorized to repurchase under stock repurchase program			3,000,000
Shares repurchased during the period, shares					475,407	3,231,700	185,953
Shares repurchased during the period, value	$ 16,349	$ 14,141			$ 11,700		$ 4,600