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SHARE-BASED COMPENSATION (Tables)
6 Months Ended
Sep. 30, 2015
SHARE-BASED COMPENSATION [Abstract]  
Summary of Nonvested Restricted Shares
A summary of the restricted shares is as follows:

  
Number of Shares
  
Weighted
Average Grant-
date Fair Value
 
     
Nonvested April 1, 2015
  
176,514
  
$
52.75
 
Granted
  
125,125
  
$
81.76
 
Vested
  
(94,625
)
 
$
48.75
 
Forfeited
  
(2,321
)
 
$
64.06
 
Nonvested September 30, 2015
  
204,693
  
$
72.21