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SHARE-BASED COMPENSATION (Tables)
6 Months Ended
Sep. 30, 2016
SHARE-BASED COMPENSATION [Abstract]  
Summary of Restricted Shares
A summary of the restricted shares is as follows:

  
Number of
Shares
  
Weighted
Average Grant-
date Fair Value
 
       
Nonvested April 1, 2016
  
203,828
  
$
72.33
 
Granted
  
72,764
  
$
86.22
 
Vested
  
(89,906
)
 
$
66.01
 
Nonvested September 30, 2016
  
186,686
  
$
80.79