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Stock-Based Compensation (Tables)
6 Months Ended
Oct. 31, 2018
Stock-Based Compensation [Abstract]  
Restricted Stock Data for Awards Granted
The following table summarizes restricted stock awards we granted:

  
Six Months Ended
October 31,
 
  
2018
  
2017
 
Restricted Stock:
      
Awards granted
  
397
   
405
 
Weighted average fair value of grant
 
$
63.33
  
$
51.44