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Defined Benefit Pension Plans (Tables)
3 Months Ended
Jul. 31, 2014
Compensation And Retirement Disclosure [Abstract]  
Pension Expenses

Pension expense consisted of the following (in thousands):

 

     Three months ended
July 31, 2014
    Three months ended
July 31, 2013
 

Service cost

   $ -0-      $ -0-   

Interest cost

     222        212   

Expected return on plan assets

     (325     (317

Recognition of net loss

     234        283   
  

 

 

   

 

 

 

Net periodic pension expense

   $ 131      $ 178