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Defined Benefit Pension Plans (Tables)
9 Months Ended
Jan. 31, 2016
Compensation and Retirement Disclosure [Abstract]  
Pension Expenses

Pension expense consisted of the following (in thousands):

 

     Three months ended
January 31, 2016
     Three months ended
January 31, 2015
 

Service cost

   $ -0-       $ -0-   

Interest cost

     224         223   

Expected return on plan assets

     (334      (331

Recognition of net loss

     329         233   
  

 

 

    

 

 

 

Net periodic pension expense

   $ 219       $ 125   
  

 

 

    

 

 

 
     Nine months ended
January 31, 2016
     Nine months ended
January 31, 2015
 

Service cost

   $ -0-       $ -0-   

Interest cost

     684         670   

Expected return on plan assets

     (1,022      (993

Recognition of net loss

     917         700   
  

 

 

    

 

 

 

Net periodic pension expense

   $ 579       $ 377