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Employee Pension Plans (Tables)
3 Months Ended
Aug. 31, 2011
Employee Pension Plans  
Components Of Net Periodic Pension Cost For Defined Benefit Plans
     Three Months Ended
August 31,
 
(in thousands)    2011     2010  

Defined benefit plans:

    

Service cost

   $ 69      $ 234   

Interest cost

     381        354   

Expected return on plan assets

     (408     (333

Net amortization and deferral

     43        64   
  

 

 

   

 

 

 

Net pension cost of defined benefit plans

   $ 85      $ 319