STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended		150 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Nov. 14, 2013	Aug. 13, 2012
STOCKHOLDERS' EQUITY [Abstract]
Authorized number of shares under stock repurchase program (in shares)				750,000	500,000
Common stock repurchased during the period (in shares)	198,401	19,423	4,900,000
Average cost of share repurchased (in dollars per share)	$ 53.84	$ 29.46	$ 15.56
Common stock repurchased during the period	$ 10,700	$ 572	$ 76,000
Shares repurchased to satisfy tax withholding obligation (in shares)		37,928