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Stock-Based Compensation (Tables)
 9 Months Ended
Jan. 31, 2020
Stock-Based Compensation [Abstract]  
Restricted Stock Awards Granted to Employees The following table summarizes restricted stock awards we granted to employees (shares in thousands):


 
Nine Months Ended
January 31,
  
   
2020
    
2019
  
Restricted Stock:
            
Awards granted
    
738
      
406
  
Weighted average fair value of grant
  
$
44.85
    
$
63.09