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STOCKHOLDERS' EQUITY (Details) (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended 144 Months Ended
Sep. 30, 2013
Sep. 30, 2013
STOCKHOLDERS' EQUITY [Abstract]    
Authorized number of shares under stock repurchase program (in shares) 500,000 500,000
Common stock repurchased during the period (in shares) 62,986 4,700,000
Average cost of share repurchased (in dollars per share) $ 53.92 $ 14.47
Common stock repurchased during the period $ 3.4 $ 68.7