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Stock-Based Compensation (Tables)
 3 Months Ended
Jul. 31, 2019
Stock-Based Compensation [Abstract]  
Restricted Stock Data for Awards Granted The following table summarizes restricted stock awards we granted (shares in thousands):


Three Months Ended
July 31,
  
 
2019
  
2018
  
Restricted Stock:
            
Awards granted
    
500
      
230
  
Weighted average fair value of grant
  
$
45.31
    
$
66.55