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Deferred Compensation and Retirement Plans (Tables) (Deferred Compensation Plans)
3 Months Ended
Jul. 31, 2014
Deferred Compensation Plans
 
Components Of Net Periodic Benefit Costs

The components of net periodic benefit costs are as follows:

 

     Three Months Ended
July 31,
 
     2014      2013  
     (in thousands)  

Amortization of actuarial loss

   $ 763       $ 780   

Interest cost

     747         676   
  

 

 

    

 

 

 

Net periodic benefit costs

   $ 1,510       $ 1,456