DEBT (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
DEBT [Abstract]
Credit facility, maximum borrowing capacity	$ 300
Credit facility, expiration date	Mar. 21, 2017
Credit facility, permitted increase in maximum borrowing capacity	200
Amount outstanding under the amended credit facility	0	18.0
Stock repurchase limit	50
Interest rate spread (in hundredths)	1.00%
Interest and fees related to the credit facility	1.0	1.7	1.9
Cash paid for interest amounts	$ 1.1	$ 1.8	$ 3.1